Air limbah laboratorium seharusnya tidak dibuang langsung ke lingkungan tanpa pengolahan lebih la... more Air limbah laboratorium seharusnya tidak dibuang langsung ke lingkungan tanpa pengolahan lebih lanjut. Hal ini dapat menimbulkan pencemaran terhadap lingkungan yang dampaknya juga dirasakan oleh makhluk hidup di sekitarnya. Bahan yang terkandung dalam air limbah laboratorium tergolong limbah bahan berbahaya dan beracun (B3) yang mengandung bahan organik dan anorganik seperti Cd, Pb, Cu, Hg, Cr, Zn, Fe, dan logam berat lainnya. Penelitian ini bertujuan untuk mereduksi logam berat dalam air limbah laboratorium dengan metode adsorpsi menggunakan adsorben. Oleh karena itu, penelitian ini difokuskan pada penurunan kadar logam berat Pb, Cu, dan Cd pada air limbah laboratorium dengan karbong aktif dan zeolit sintetik sebagai adsorben. Persentase penyisihan logam Pb terbesar dengan menggunakan karbon aktif sebesar 97,93% dicapai pada pH 7, sedangkan dengan menggunakan zeolit sintetik sebesar 98,47% yang dicapai pada pH 6. Persentase terbesar penyisihan logam Cu menggunakan karbon aktif menc...
Free fatty acid esterification (FFA) in palm oil mill waste (POME) was carried out using a sulfon... more Free fatty acid esterification (FFA) in palm oil mill waste (POME) was carried out using a sulfonated carbon-zeolite composite catalyst. The catalyst is synthesized with carbon precursor obtained from molasses, which is adsorbed on the surface of the zeolite and then carbonized and sulfonated with concentrated H2SO4 to form a sulfonated carbon-zeolite catalyst composite, which will be used for the esterification catalyst and the optimization process for the esterification reaction is carried out using the response surface methodology (RSM) and experimental central composite design (CCD). Importantly, the observed independent variables were temperature, catalyst weight, and reaction time to produce fatty acid methyl ester (FAME) products. The catalyst was successfully synthesized, which was shown from the SEM characterization strengthened by the presence of a sulfate group in the FTIR results and the calculation results of high acidity properties. Optimization of FFA esterification w...
In the work described here the technical and economic feasibilities of four advanced oxidation pr... more In the work described here the technical and economic feasibilities of four advanced oxidation processes (AOPs) have been studied: photocatalysis (UV/TiO2), photolysis (UV), ozonolysis (O3) and photolysis-ozonation (UV/O3). In this study, the comparison was made by assessing the four technologies with winery wastewater. All four technologies were able to treat the wastewater but very different results were obtained in term of COD removal. Within the discharge limits that all of the technologies can reach, the economic analysis shows that the operating cost of O3 and UV/O3 are lower than either UV or UV/TiO2. Photocatalysis and photolysis processes are considerably more expensive than the others due to the high nominal power of the lamp used in these experiments. Cost would be drastically reduced if solar light were used. Ozone process (O3) appears to be the most potential option for the winery wastewater treatment.
This research studied the effect of the carbon black filler on PP/NR the composite. Thermoplastic... more This research studied the effect of the carbon black filler on PP/NR the composite. Thermoplastic elastomers produced are based on Polypropylene and natural rubber for industrial use. This research was conducted in order to develop ETP products that have been produced become prime material and can be accepted by the automotive and medical equipment industry. The method used in this study was Polypropylene grafting process with Maleic Anhydride (PP-g-MA). The grafting process was carried out at the temperature of 160°C and a time of 10 minutes. The variations in the composition of PP/NR/CB are (30:70:0) % by weight, (30:69:1) % by weight, (30:68:2) % by weight and (30:67:3) % by weight. The characteristictest which was conducted included the physical and mechanical properties. The obtained results showed that the composite mechanical test in the form of tensile test increased as the level of filler increased, and the mechanical test in the form of elongation at break kept decreasing ...
Saat ini industri tekstil di Indonesia semakin berkembang, termasuk di provinsi Sumatera Selatan ... more Saat ini industri tekstil di Indonesia semakin berkembang, termasuk di provinsi Sumatera Selatan yang kaya dengan berbagai jenis kain tradisional. Procion Red adalah salah satu pewarna sintetik yang paling sering digunakan pada home industry kain tradisional khas Palembang. Namun, air limbah yang dihasilkan dari industri ini mengandung zat pewarna sintetik yang berbahaya bagi lingkungan. Untuk itu, perlu dilakukan pengolahan yang efektif untuk menanggulanginya. Salah satu cara untuk mengolah air limbah tersebut adalah melalui proses yang dikenal dengan Advanced Oxidation Processes (AOPs), diantaranya dengan metode UV-Fenton-Katalitik. Penelitian ini bertujuan untuk mendapatkan kondisi optimum proses pengolahan air limbah Procion Red dengan metode UV-Fenton-Katalitik, maka dilakukan penelitian mengenai pengaruh konsentrasi Procion Red dan konsentrasi katalis. Katalis yang digunakan adalah TiO2. Pada penelitian ini digunakan konsentrasi air limbah Procion Red 150 -300 ppm, konsentrasi...
The surface area of a photocatalyst is an important factor that effect decomposition process of c... more The surface area of a photocatalyst is an important factor that effect decomposition process of colored wastewater. Increasing the catalyst particle surface area will increase the UV light absorbed thus enhance the photacatalysis process. Bulk TiO2 will have the higher surface area if it is made in the nano size. As a photocatalyst, nanoparticle of TiO2 is more efficient than bulk of TiO2. The nanoparticle of TiO2 can be made in various ways, for example by simple heating method. In this study, the synthesis of nanoparticle TiO2 was investigated by optimize the amount of polyethilene glycol (PEG 200) used and the annealing temperature. The amount of PEG 200 was varied between 6-18 ml. Moreover, the annealing temperature was varied in the range of 600-700oC. After synthesizing, the nanoparticles of TiO2 then characterize by using scanning electron microscope (SEM) to observe the morphology, and by using the X-ray difraction (XRD) to find the crystal structure and the particle size. B...
Crude Palm Oil (CPO) is a vegetable oil that contains free fatty acids. Free fatty acids (FFA) nu... more Crude Palm Oil (CPO) is a vegetable oil that contains free fatty acids. Free fatty acids (FFA) number below 5% affect the price of this commodity. This study aims to reduce the FFA in CPO from the Fatpit station using the ion exchange method by means of the anion resin Amberlite IRA 900 and Lewatit Monoplus M500. The decrease in acid number occurs due to the exchange of OHions in anion resins and OHions in the FFA constituent bonds present in CPO. The reduction process using n-hexane solvent with a ratio of 1:1, 1:2, 2:3 and 3:2. The results indicate that the resin anion via monoplus M500 is more consistent in reducing the acid level lowered by the Amberlite IRA anion resin. 900 equal to 87% with 3 repetitions. The n-hexane solvent has an effect on the process of reducing the acid number, where the optimal ratio is using a ratio of 3:2. Regeneration of anion resin does not have a positive effect on the process of decreasing the acid number. The ion exchange capacity of the resin via...
International journal of engineering. Transactions A: basics, 2018
Based on various characteristics of zeolite, its utilization in the manufacture of fertilizers wi... more Based on various characteristics of zeolite, its utilization in the manufacture of fertilizers with slow-release properties is possible. The objectives of this study are to characterize and utilized nitrogen, phosphorus and potassium (NPK) slow release fertilizer by using natural zeolite in Indonesia. In this research, zeolite was utilized as a mixture of Slow Release Fertilizer (SRF). Effect of zeolite addition to single/multi-nutrients NPK fertilizer, compacting process, and applied medium on the average rate of fertilizer solubility was investigated. Fertilizer compaction results of NPK, NPK + zeolite, and (N-P-K) + zeolite were characterized by SEM EDS to examine the surface morphology and chemical composition of the fertilizer samples. Nutrients content in soil, domestic water, and demineralized water medium were analyzed by AAS. Base on the experimental results, it was found that addition of zeolite in the single (N-P-K) or multi-nutrients (NPK) fertilizer reduced the average ...
International Journal of Scientific & Technology Research, 2018
Textile industry consumes the most amounts of dye lots in the production process which have a non... more Textile industry consumes the most amounts of dye lots in the production process which have a non-biodegradable in nature. It is necessary to do the dye wastewater treatment before discharging to the environment. Photodegradation is a process of decomposition of organic compounds with the aid of photon energy, in which oxidation and reduction reactions occur on the surface of the semiconductor. One of the good semiconductors used is ZnO. Furthermore, adding a matrix or dopants is expected to assist ZnO photocatalysts so that dye degradation is more optimal. Zeolite is a good solid support for dispersing ZnO semiconductors because zeolite has large surface area and uniformity of pore size. Procion Red was used as a model of synthetic dye wastewater. The objectives of the study are to synthesize ZnO-zeolite composites by impregnation method and to study the effects of irradiation time (30-120 minutes), type of composites used, and light conditions (dark room, UV light, and sunlight) o...
South Sumatra as one of the national rice producer is estimated to generate production of rice in... more South Sumatra as one of the national rice producer is estimated to generate production of rice in the form of waste rice hull in average of more than 6000 tons annually. Generally, this waste utilization is not maximized, sometimes even become into a waste that can cause environmental pollution. So far the use of waste only as fuel for cooking and as a material for washing utensils. On the other hand, the activated carbon demand as adsorbent continues to increase, especially in the field of pharmaceutical industry, textile industry, food industry, and waste handling. To further empower the solid waste and rice hull to reduce the negative effects of the waste, then one alternative is to process it into the activated carbon. Expected results of this research will provide solution in the utilization of rice hull waste and provide an alternative for the provision of activated carbon. Activated carbon from rice hull prepared by carbonization of rice hull in a furnace at temperatures 400-...
Kebanyakan indutri tekstil menggunakan pewarna sintetis yang dapat menimbulkan pencemaran lingkun... more Kebanyakan indutri tekstil menggunakan pewarna sintetis yang dapat menimbulkan pencemaran lingkungan karena air limbah pewarna yang dihasilkannya. Salah satu proses pengolahan pewarna sintetis yang dihasilkan dari air limbah industri tekstil adalah dengan Advanced Oxidation Processes (AOPs), di antaranya dengan menggunakan metode reagen Fenton. Agar pengolahannya dapat optimum, maka perlu diketahui pengaruh dari temperatur dan waktu terhadap pengolahan pewarna sintetis yang menggunakan metode tersebut. Pada penelitian ini, digunakan pewarna sintetis procion merah dan procion biru dengan konsentrasi 150 – 250 mg/L, kecepatan pengadukan 200 rpm, reagen Fenton dengan konsentrasi H 2 O 2 80 mM dan FeSO 4 .7H 2 O 4 mM, pH 3, waktu pengadukan 0 – 60 menit, dan temperatur 25 – 55 °C. Hasil yang didapatkan untuk mencapai degradasi warna 100% adalah pada temperatur 55 o C dan waktu pengadukan 60 menit. Kondisi tersebut selanjutnya diaplikasikan pada limbah cair pewarna kain jumputan, didapat...
Ammonia removal from wastewater using anaerobic process called anammox which in effect will resul... more Ammonia removal from wastewater using anaerobic process called anammox which in effect will result in the removal of nitrogen is paramount. Anammox is a biological method of nitrogen removal which is considered to be efficient, cheap and environmentally friendly. This study is aimed to evaluate the feasibility of hybrid anammox reactor for removal of synthetic wastewater containing high ammonia concentration. The anammox hybrid reactor with an effective volume of 6.0 L was operated with two parts, combining fixed bed in the upper part and fluidized bed in the bottom part. The upper part was constructed with a porous polyester pile fabric material to effectively attach the suspended sludge. A maximum nitrogen removal rate (NRR) of 15.3 kg-N m-3 d-1 was reached on the operation day 97 with a TN removal efficiency of 77%. From the viewpoint of the biomass concentration, the fluidized bed was considerably responsible for 82% of the total nitrogen removal.
Most of the textile industries today used the synthetic dyes which recalcitrant in nature and con... more Most of the textile industries today used the synthetic dyes which recalcitrant in nature and contain the dangerous poisonous material property. However, the application of the synthetic color can be harmful to the environment because the colored wastewater produced from their processes is difficult to degrade. The application of Advanced Oxidation Processes (AOPs) for dye wastewater treatment is the focus of this study. Photocatalysis as one of the AOPs was applied for the decolorization of the organic content of synthetic dye wastewater. The reactive dye, C.I. Reactive Red 2 (RR2) was used as the model organic pollutants. In this research, the bulk and nanoparticle of titanium dioxide (TiO2) catalyst were immobilized on a plastic surface. The solar-induced photocatalytic decolorization process was performed in a 220 mL of cylinder glass reactor. The catalyst concentration was varied from 0 to 0.4 g/mL. The RR2 concentration was varied between 25-100 mg/L. Degradation of organic co...
Indonesia merupakan produsen dan eksportir minyak kelapa sawit terbesar. Meningkatnya permintaan ... more Indonesia merupakan produsen dan eksportir minyak kelapa sawit terbesar. Meningkatnya permintaan terhadap minyak kelapa sawit akan meningkatkan kapasitas produksi yang berdampak terhadap peningkatan jumlah limbah industri kelapa sawit. Limbah pada industri kelapa sawit terdiri dari limbah padat, cair dan gas. Limbah cair kelapa sawit populer dikenal sebagai Palm Oil Mill Effluent (POME). Limbah POME mengandung senyawa organik sehingga nilai COD, BOD dan TSS tinggi. Proses Fenton merupakan metode AOPs yang paling menonjol karena mampu menghasilkan radikal hidroksil lebih cepat. Bentonit digunakan sebagai adsorben dalam mengolah limbah POME ini. Penelitian ini bertujuan untuk mengolah limbah POME dengan metode Fenton dan kombinasi adsorpsi-Fenton. Pengaruh perbandingan rasio molar FeSO 4 .7H 2 O:H 2 O 2 pada reagen Fenton sebesar 1:60, 1:80 dan 1:100 serta waktu pengadukan selama 15, 30, 45 dan 60 menit juga dipelajari. Didapatkan hasil penurunan paling tinggi yaitu sebesar 79% pada m...
Untuk lebih memberdayakan limbah padat sekam padi dan mengurangi efek negatif dari sampah, maka s... more Untuk lebih memberdayakan limbah padat sekam padi dan mengurangi efek negatif dari sampah, maka salah satu alternatifnya adalah dengan mengolahnya menjadi karbon aktif. Diharapkan pembuatan karbon aktif dari sekam padi akan memberikan solusi dalam pemanfaatan limbah sekam padi dan memberikan alternatif bagi penyediaan karbon aktif. Karbon aktif dari sekam padi dibuat dengan cara melakukan karbonisasi sekam padi di dalam furnace dengan suhu 600oC selam 3 jam. Kemudian karbon yang terbentuk diaktifkan dengan cara direndam dalam larutan aktivator NaOH dengan konsentrasi 0,1 M. Selanjutnya dilakukan pengujian terhadap volatil matter, kadar air, kadar abu, daya serap terhadap iodine, dan fixed carbon. Dihasilkan karbon aktif yang memiliki daya serap terhadap iodine sebesar 1861 mg/g, kadar air 0,99 %, kadar abu 18,52 %, volatile matter 15,29 %, dan fixed karbon 66,19 %, yang telah memenuhi syarat mutu karbon aktif menurut Standar Industri Indonesia (SII No. 0258-88). Daya serap terhadap ...
Air limbah laboratorium seharusnya tidak dibuang langsung ke lingkungan tanpa pengolahan lebih la... more Air limbah laboratorium seharusnya tidak dibuang langsung ke lingkungan tanpa pengolahan lebih lanjut. Hal ini dapat menimbulkan pencemaran terhadap lingkungan yang dampaknya juga dirasakan oleh makhluk hidup di sekitarnya. Bahan yang terkandung dalam air limbah laboratorium tergolong limbah bahan berbahaya dan beracun (B3) yang mengandung bahan organik dan anorganik seperti Cd, Pb, Cu, Hg, Cr, Zn, Fe, dan logam berat lainnya. Penelitian ini bertujuan untuk mereduksi logam berat dalam air limbah laboratorium dengan metode adsorpsi menggunakan adsorben. Oleh karena itu, penelitian ini difokuskan pada penurunan kadar logam berat Pb, Cu, dan Cd pada air limbah laboratorium dengan karbong aktif dan zeolit sintetik sebagai adsorben. Persentase penyisihan logam Pb terbesar dengan menggunakan karbon aktif sebesar 97,93% dicapai pada pH 7, sedangkan dengan menggunakan zeolit sintetik sebesar 98,47% yang dicapai pada pH 6. Persentase terbesar penyisihan logam Cu menggunakan karbon aktif menc...
Free fatty acid esterification (FFA) in palm oil mill waste (POME) was carried out using a sulfon... more Free fatty acid esterification (FFA) in palm oil mill waste (POME) was carried out using a sulfonated carbon-zeolite composite catalyst. The catalyst is synthesized with carbon precursor obtained from molasses, which is adsorbed on the surface of the zeolite and then carbonized and sulfonated with concentrated H2SO4 to form a sulfonated carbon-zeolite catalyst composite, which will be used for the esterification catalyst and the optimization process for the esterification reaction is carried out using the response surface methodology (RSM) and experimental central composite design (CCD). Importantly, the observed independent variables were temperature, catalyst weight, and reaction time to produce fatty acid methyl ester (FAME) products. The catalyst was successfully synthesized, which was shown from the SEM characterization strengthened by the presence of a sulfate group in the FTIR results and the calculation results of high acidity properties. Optimization of FFA esterification w...
In the work described here the technical and economic feasibilities of four advanced oxidation pr... more In the work described here the technical and economic feasibilities of four advanced oxidation processes (AOPs) have been studied: photocatalysis (UV/TiO2), photolysis (UV), ozonolysis (O3) and photolysis-ozonation (UV/O3). In this study, the comparison was made by assessing the four technologies with winery wastewater. All four technologies were able to treat the wastewater but very different results were obtained in term of COD removal. Within the discharge limits that all of the technologies can reach, the economic analysis shows that the operating cost of O3 and UV/O3 are lower than either UV or UV/TiO2. Photocatalysis and photolysis processes are considerably more expensive than the others due to the high nominal power of the lamp used in these experiments. Cost would be drastically reduced if solar light were used. Ozone process (O3) appears to be the most potential option for the winery wastewater treatment.
This research studied the effect of the carbon black filler on PP/NR the composite. Thermoplastic... more This research studied the effect of the carbon black filler on PP/NR the composite. Thermoplastic elastomers produced are based on Polypropylene and natural rubber for industrial use. This research was conducted in order to develop ETP products that have been produced become prime material and can be accepted by the automotive and medical equipment industry. The method used in this study was Polypropylene grafting process with Maleic Anhydride (PP-g-MA). The grafting process was carried out at the temperature of 160°C and a time of 10 minutes. The variations in the composition of PP/NR/CB are (30:70:0) % by weight, (30:69:1) % by weight, (30:68:2) % by weight and (30:67:3) % by weight. The characteristictest which was conducted included the physical and mechanical properties. The obtained results showed that the composite mechanical test in the form of tensile test increased as the level of filler increased, and the mechanical test in the form of elongation at break kept decreasing ...
Saat ini industri tekstil di Indonesia semakin berkembang, termasuk di provinsi Sumatera Selatan ... more Saat ini industri tekstil di Indonesia semakin berkembang, termasuk di provinsi Sumatera Selatan yang kaya dengan berbagai jenis kain tradisional. Procion Red adalah salah satu pewarna sintetik yang paling sering digunakan pada home industry kain tradisional khas Palembang. Namun, air limbah yang dihasilkan dari industri ini mengandung zat pewarna sintetik yang berbahaya bagi lingkungan. Untuk itu, perlu dilakukan pengolahan yang efektif untuk menanggulanginya. Salah satu cara untuk mengolah air limbah tersebut adalah melalui proses yang dikenal dengan Advanced Oxidation Processes (AOPs), diantaranya dengan metode UV-Fenton-Katalitik. Penelitian ini bertujuan untuk mendapatkan kondisi optimum proses pengolahan air limbah Procion Red dengan metode UV-Fenton-Katalitik, maka dilakukan penelitian mengenai pengaruh konsentrasi Procion Red dan konsentrasi katalis. Katalis yang digunakan adalah TiO2. Pada penelitian ini digunakan konsentrasi air limbah Procion Red 150 -300 ppm, konsentrasi...
The surface area of a photocatalyst is an important factor that effect decomposition process of c... more The surface area of a photocatalyst is an important factor that effect decomposition process of colored wastewater. Increasing the catalyst particle surface area will increase the UV light absorbed thus enhance the photacatalysis process. Bulk TiO2 will have the higher surface area if it is made in the nano size. As a photocatalyst, nanoparticle of TiO2 is more efficient than bulk of TiO2. The nanoparticle of TiO2 can be made in various ways, for example by simple heating method. In this study, the synthesis of nanoparticle TiO2 was investigated by optimize the amount of polyethilene glycol (PEG 200) used and the annealing temperature. The amount of PEG 200 was varied between 6-18 ml. Moreover, the annealing temperature was varied in the range of 600-700oC. After synthesizing, the nanoparticles of TiO2 then characterize by using scanning electron microscope (SEM) to observe the morphology, and by using the X-ray difraction (XRD) to find the crystal structure and the particle size. B...
Crude Palm Oil (CPO) is a vegetable oil that contains free fatty acids. Free fatty acids (FFA) nu... more Crude Palm Oil (CPO) is a vegetable oil that contains free fatty acids. Free fatty acids (FFA) number below 5% affect the price of this commodity. This study aims to reduce the FFA in CPO from the Fatpit station using the ion exchange method by means of the anion resin Amberlite IRA 900 and Lewatit Monoplus M500. The decrease in acid number occurs due to the exchange of OHions in anion resins and OHions in the FFA constituent bonds present in CPO. The reduction process using n-hexane solvent with a ratio of 1:1, 1:2, 2:3 and 3:2. The results indicate that the resin anion via monoplus M500 is more consistent in reducing the acid level lowered by the Amberlite IRA anion resin. 900 equal to 87% with 3 repetitions. The n-hexane solvent has an effect on the process of reducing the acid number, where the optimal ratio is using a ratio of 3:2. Regeneration of anion resin does not have a positive effect on the process of decreasing the acid number. The ion exchange capacity of the resin via...
International journal of engineering. Transactions A: basics, 2018
Based on various characteristics of zeolite, its utilization in the manufacture of fertilizers wi... more Based on various characteristics of zeolite, its utilization in the manufacture of fertilizers with slow-release properties is possible. The objectives of this study are to characterize and utilized nitrogen, phosphorus and potassium (NPK) slow release fertilizer by using natural zeolite in Indonesia. In this research, zeolite was utilized as a mixture of Slow Release Fertilizer (SRF). Effect of zeolite addition to single/multi-nutrients NPK fertilizer, compacting process, and applied medium on the average rate of fertilizer solubility was investigated. Fertilizer compaction results of NPK, NPK + zeolite, and (N-P-K) + zeolite were characterized by SEM EDS to examine the surface morphology and chemical composition of the fertilizer samples. Nutrients content in soil, domestic water, and demineralized water medium were analyzed by AAS. Base on the experimental results, it was found that addition of zeolite in the single (N-P-K) or multi-nutrients (NPK) fertilizer reduced the average ...
International Journal of Scientific & Technology Research, 2018
Textile industry consumes the most amounts of dye lots in the production process which have a non... more Textile industry consumes the most amounts of dye lots in the production process which have a non-biodegradable in nature. It is necessary to do the dye wastewater treatment before discharging to the environment. Photodegradation is a process of decomposition of organic compounds with the aid of photon energy, in which oxidation and reduction reactions occur on the surface of the semiconductor. One of the good semiconductors used is ZnO. Furthermore, adding a matrix or dopants is expected to assist ZnO photocatalysts so that dye degradation is more optimal. Zeolite is a good solid support for dispersing ZnO semiconductors because zeolite has large surface area and uniformity of pore size. Procion Red was used as a model of synthetic dye wastewater. The objectives of the study are to synthesize ZnO-zeolite composites by impregnation method and to study the effects of irradiation time (30-120 minutes), type of composites used, and light conditions (dark room, UV light, and sunlight) o...
South Sumatra as one of the national rice producer is estimated to generate production of rice in... more South Sumatra as one of the national rice producer is estimated to generate production of rice in the form of waste rice hull in average of more than 6000 tons annually. Generally, this waste utilization is not maximized, sometimes even become into a waste that can cause environmental pollution. So far the use of waste only as fuel for cooking and as a material for washing utensils. On the other hand, the activated carbon demand as adsorbent continues to increase, especially in the field of pharmaceutical industry, textile industry, food industry, and waste handling. To further empower the solid waste and rice hull to reduce the negative effects of the waste, then one alternative is to process it into the activated carbon. Expected results of this research will provide solution in the utilization of rice hull waste and provide an alternative for the provision of activated carbon. Activated carbon from rice hull prepared by carbonization of rice hull in a furnace at temperatures 400-...
Kebanyakan indutri tekstil menggunakan pewarna sintetis yang dapat menimbulkan pencemaran lingkun... more Kebanyakan indutri tekstil menggunakan pewarna sintetis yang dapat menimbulkan pencemaran lingkungan karena air limbah pewarna yang dihasilkannya. Salah satu proses pengolahan pewarna sintetis yang dihasilkan dari air limbah industri tekstil adalah dengan Advanced Oxidation Processes (AOPs), di antaranya dengan menggunakan metode reagen Fenton. Agar pengolahannya dapat optimum, maka perlu diketahui pengaruh dari temperatur dan waktu terhadap pengolahan pewarna sintetis yang menggunakan metode tersebut. Pada penelitian ini, digunakan pewarna sintetis procion merah dan procion biru dengan konsentrasi 150 – 250 mg/L, kecepatan pengadukan 200 rpm, reagen Fenton dengan konsentrasi H 2 O 2 80 mM dan FeSO 4 .7H 2 O 4 mM, pH 3, waktu pengadukan 0 – 60 menit, dan temperatur 25 – 55 °C. Hasil yang didapatkan untuk mencapai degradasi warna 100% adalah pada temperatur 55 o C dan waktu pengadukan 60 menit. Kondisi tersebut selanjutnya diaplikasikan pada limbah cair pewarna kain jumputan, didapat...
Ammonia removal from wastewater using anaerobic process called anammox which in effect will resul... more Ammonia removal from wastewater using anaerobic process called anammox which in effect will result in the removal of nitrogen is paramount. Anammox is a biological method of nitrogen removal which is considered to be efficient, cheap and environmentally friendly. This study is aimed to evaluate the feasibility of hybrid anammox reactor for removal of synthetic wastewater containing high ammonia concentration. The anammox hybrid reactor with an effective volume of 6.0 L was operated with two parts, combining fixed bed in the upper part and fluidized bed in the bottom part. The upper part was constructed with a porous polyester pile fabric material to effectively attach the suspended sludge. A maximum nitrogen removal rate (NRR) of 15.3 kg-N m-3 d-1 was reached on the operation day 97 with a TN removal efficiency of 77%. From the viewpoint of the biomass concentration, the fluidized bed was considerably responsible for 82% of the total nitrogen removal.
Most of the textile industries today used the synthetic dyes which recalcitrant in nature and con... more Most of the textile industries today used the synthetic dyes which recalcitrant in nature and contain the dangerous poisonous material property. However, the application of the synthetic color can be harmful to the environment because the colored wastewater produced from their processes is difficult to degrade. The application of Advanced Oxidation Processes (AOPs) for dye wastewater treatment is the focus of this study. Photocatalysis as one of the AOPs was applied for the decolorization of the organic content of synthetic dye wastewater. The reactive dye, C.I. Reactive Red 2 (RR2) was used as the model organic pollutants. In this research, the bulk and nanoparticle of titanium dioxide (TiO2) catalyst were immobilized on a plastic surface. The solar-induced photocatalytic decolorization process was performed in a 220 mL of cylinder glass reactor. The catalyst concentration was varied from 0 to 0.4 g/mL. The RR2 concentration was varied between 25-100 mg/L. Degradation of organic co...
Indonesia merupakan produsen dan eksportir minyak kelapa sawit terbesar. Meningkatnya permintaan ... more Indonesia merupakan produsen dan eksportir minyak kelapa sawit terbesar. Meningkatnya permintaan terhadap minyak kelapa sawit akan meningkatkan kapasitas produksi yang berdampak terhadap peningkatan jumlah limbah industri kelapa sawit. Limbah pada industri kelapa sawit terdiri dari limbah padat, cair dan gas. Limbah cair kelapa sawit populer dikenal sebagai Palm Oil Mill Effluent (POME). Limbah POME mengandung senyawa organik sehingga nilai COD, BOD dan TSS tinggi. Proses Fenton merupakan metode AOPs yang paling menonjol karena mampu menghasilkan radikal hidroksil lebih cepat. Bentonit digunakan sebagai adsorben dalam mengolah limbah POME ini. Penelitian ini bertujuan untuk mengolah limbah POME dengan metode Fenton dan kombinasi adsorpsi-Fenton. Pengaruh perbandingan rasio molar FeSO 4 .7H 2 O:H 2 O 2 pada reagen Fenton sebesar 1:60, 1:80 dan 1:100 serta waktu pengadukan selama 15, 30, 45 dan 60 menit juga dipelajari. Didapatkan hasil penurunan paling tinggi yaitu sebesar 79% pada m...
Untuk lebih memberdayakan limbah padat sekam padi dan mengurangi efek negatif dari sampah, maka s... more Untuk lebih memberdayakan limbah padat sekam padi dan mengurangi efek negatif dari sampah, maka salah satu alternatifnya adalah dengan mengolahnya menjadi karbon aktif. Diharapkan pembuatan karbon aktif dari sekam padi akan memberikan solusi dalam pemanfaatan limbah sekam padi dan memberikan alternatif bagi penyediaan karbon aktif. Karbon aktif dari sekam padi dibuat dengan cara melakukan karbonisasi sekam padi di dalam furnace dengan suhu 600oC selam 3 jam. Kemudian karbon yang terbentuk diaktifkan dengan cara direndam dalam larutan aktivator NaOH dengan konsentrasi 0,1 M. Selanjutnya dilakukan pengujian terhadap volatil matter, kadar air, kadar abu, daya serap terhadap iodine, dan fixed carbon. Dihasilkan karbon aktif yang memiliki daya serap terhadap iodine sebesar 1861 mg/g, kadar air 0,99 %, kadar abu 18,52 %, volatile matter 15,29 %, dan fixed karbon 66,19 %, yang telah memenuhi syarat mutu karbon aktif menurut Standar Industri Indonesia (SII No. 0258-88). Daya serap terhadap ...
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