Lemna minor
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Recent papers in Lemna minor
"In this study medicinal uses of Algae and Mosses are investigated in manuscripts of İbn-i Baytar (Ibn al Baithar), İbn-i Sina (Avicenna), Huneyn bin İshak (Joannitus), Dioscorides and Plinius. Ulva lactuca and Fucus sp. have been... more
"In this study medicinal uses of Algae and Mosses are investigated in manuscripts of İbn-i Baytar (Ibn al Baithar), İbn-i Sina (Avicenna), Huneyn bin İshak (Joannitus), Dioscorides and Plinius. Ulva lactuca and Fucus sp. have been identified according to the descriptions given in these manuscripts. It is designated that the Arabic term “Tuhlub” occupies both the meanings of any algal species and Lemna minor
of Spermatophyta."
of Spermatophyta."
- by gülşah çobanoğlu and +1
- •
- Avicenna, Ulva lactuca, Fucus, İbn-i Sina
Malaysia is one of the major palm oil producer in the world. Therefore, it is important to develop environmental friendly and economic method for treating palm oil mill effluent (POME) in Malaysia. Nowadays, macrophytes and microalgae... more
Malaysia is one of the major palm oil producer in the world. Therefore, it is important to develop environmental friendly and economic method for treating palm oil mill effluent (POME) in Malaysia. Nowadays, macrophytes and microalgae have received lot of attention due to its ability of removing pollutants. The main aim of this study is to investigate the potential of Lemna minor and Chlamydomonas for the bioremediation of palm oil mill effluent in order to achieve higher water quality standard and further to produce organic fertilizer. In this study, three different experiments were conducted starting with Lemna minor, followed by Chlamydomonas and finally in combination of Lemna minor and Chlamydomonas. The parameters tested are COD, nitrate, ammoniacal nitrogen, phosphate, MLSS, MLVSS, and nutritional content as organic fertilizer. The result showed that a maximum of 25.41% COD reduction rate was obtained. Whereas the maximum removal rate for nitrate, ammoniacal nitrogen and phosphate was found to be 75%, 93.70% and 70.47%. Meanwhile, the MLSS and MLVSS showed 18mg/L and 22mg/L. The average difference of nitrate, ammoniacal nitrogen and phosphate contents present in the organic fertilizer made from Lemna minor was found to be ±95 mg/L, ±39.5mg/L and ±62.5mg/L when compared to other commercial fertilizers used in this study. The findings of this study shows that the use of macrophyte (Lemna minor) and microalgae (Chlamydomonas) resulted in a higher ability to remove the nutrients present in POME, which can contribute in improving the environment from pollution.
Background: Recently, there has been a great concern about the consumption of dyes because of their toxicity, mutagenicity, carcinogenicity, and persistence in the aquatic environment. Therefore, the aim of this study was to determine the... more
Background: Recently, there has been a great concern about the consumption of dyes because of their toxicity, mutagenicity, carcinogenicity, and persistence in the aquatic environment. Therefore, the aim of this study was to determine the feasibility of using Lemna minor for Acid Blue 292 (AB292) dye removal from aqueous solution and to determine the optimal conditions.
Methods: This experimental study was conducted in the batch systems to investigate the effects of parameters such as contact time, initial concentration of dye, pH and Lemna minor biomass dose. Isotherms and kinetic studies of dye adsorption were performed using equilibrium data.
Results: According to the results, a maximum removal efficiency of 98.5% was obtained at pH of 3 and the contact time of 90 min; initial dye concentration 10 mg/L and adsorbent dose 3g/L. The adsorption data was best fitted to the Langmuir isotherm and pseudo-second order kinetic model.
Conclusion: The results showed that Lemna minor could be used as a cost-effective adsorbent for removing AB292 dye from textile wastewater efficiently.
Methods: This experimental study was conducted in the batch systems to investigate the effects of parameters such as contact time, initial concentration of dye, pH and Lemna minor biomass dose. Isotherms and kinetic studies of dye adsorption were performed using equilibrium data.
Results: According to the results, a maximum removal efficiency of 98.5% was obtained at pH of 3 and the contact time of 90 min; initial dye concentration 10 mg/L and adsorbent dose 3g/L. The adsorption data was best fitted to the Langmuir isotherm and pseudo-second order kinetic model.
Conclusion: The results showed that Lemna minor could be used as a cost-effective adsorbent for removing AB292 dye from textile wastewater efficiently.
The purpose of the research was to determine the influence of industrial wastewater treatment using the Lemna Minor aquatic plant. Certain varieties of macrophyte plants can absorb or retain various contaminants. Thanks to this, it has... more
The purpose of the research was to determine the influence of industrial wastewater treatment using the Lemna Minor aquatic plant. Certain varieties of macrophyte plants can absorb or retain various contaminants. Thanks to this, it has been determined that the variety known as Lemna Minor presents this type of property. Three treatment trials were carried out varying the amounts of Lemna Minor (100, 200, and 300g). They are keeping constant the retention time of 10 days that were analyzed at 3, 6, and 10 days after the treatment and with a constant volume of the residual effluent. The results indicate that in terms of the parameters that determine organic contamination, BOD was reduced by (61 %); COD was reduced by (68 %) and the concentration of total suspended solids by (61 %).
Comparación de las características poblacionales de Lemna minuta (ARACEAE: LEMNOIDEAE) en tres medios de cultivo Comparison of the populational characteristics of Lemna minuta (ARACEAE: LEMNOIDEAE) in three culture media RESUMEN Las... more
Comparación de las características poblacionales de Lemna minuta (ARACEAE: LEMNOIDEAE) en tres medios de cultivo Comparison of the populational characteristics of Lemna minuta (ARACEAE: LEMNOIDEAE) in three culture media RESUMEN Las investigaciones en macrófitas acuáticas neotropicales son escasas, principalmente en Colombia comparadas con países como Brasil, aunque se consideran comunidades apropiadas en diversas aplicaciones por su gran capacidad reproductiva y alta sensibi-lidad a condiciones cambiantes del ambiente. Se propuso aclimatar y cultivar un clon de Lemna minuta, lenteja de agua flotante de amplia distribución en Colombia y América. Sus frondas hijas se mantuvieron dos meses en el medio de cultivo APHA y poste-riormente se comparó su propagación en tres medios de cultivo: Hoagland's E+, APHA y AAP20x. Se analizaron variables de crecimiento poblacional como tasa de crecimiento, mortalidad, tiempo de duplicación y tiempo de vida. Adicionalmente, se eva-luó la eficiencia del método de limpieza de frondas propuesto por Acreman para obtener cultivos axénicos. Los resultados indica-ron que el medio Hoagland's E+ (sin compuestos orgánicos) es el más adecuado para el crecimiento de las frondas en condicio-nes de laboratorio, debido a su mayor tasa de producción de frondas (0,16 frondas·d-1) y tiempo de vida (13,8 días), con menor mortalidad (0,11 frondas·d-1) y tiempo de duplicación (4,61 días). Conocer los parámetros de crecimiento poblacional y las condi-ciones de cultivo de L. minuta permiten proponerla como una macrófita relevante y candidata para diversos bioensayos de cali-dad de agua. Palabras clave: medios de cultivo, tasa de crecimiento, propagación, lentejas de agua, Lemna minuta.
RESUMEN En la presente revisión bibliográfica se analiza el estado actual del control artificial de la madurez sexual en peces de cultivo utilizando terapias hormonales, analizando en forma crítica las ventajas y desventajas de las... more
RESUMEN En la presente revisión bibliográfica se analiza el estado actual del control artificial de la madurez sexual en peces de cultivo utilizando terapias hormonales, analizando en forma crítica las ventajas y desventajas de las diferentes estrategias tecnológicas existentes para un cultivador. Se discute desde los primeros intentos exitosos realizados por Houssay (1930) en Argentina, hasta las últimas y cada vez más exitosas técnicas de liberación lenta y el uso cada vez mayor de inhibidores de la dopamina. Además, se discute el uso de metodologías no traumáticas que a la fecha no han resultado del todo exitosas. Palabras clave: reproducción, peces, GnRH, sincronización, desove. INTRODUCCION El perfil de desarrollo que cada día adquiere la acuicultura industrial en Chile y en el mundo, con un alto desarrollo tecnológico y un amplio conocimiento de las especies que se cultivan, exige como requisito un adecuado control de los procesos reproductivos de los peces (Zohar y Mylonas 2001). Ya a inicios de la década de los 80, Harvey y Hoar (1980) planteaban que una actividad acuícola comercial no se podía sostener en la captura de larvas o juveniles desde el medio natural. Una vez controlada la reproducción de una especie acuática en sistemas de cultivo, se pueden producir los descendientes que permitirán iniciar ciclos nuevos y permanentes de producción. Asociado a ello, se podrán aplicar programas de selección de razas de mejor crecimiento, modificar su época de reproducción (Davy y Chouinard 1980, Billard y Breton 1985, Bromage 1995) o aplicar programas de manipulación genética que permitan mejorar la sobrevivencia, la calidad de su carne (Thorgaard 1995), reducir los problemas de la maduración sexual, generar poblaciones monosexo y, últimamente, producir organismos genéticamente modificados (Donaldson y col 1996, Donaldson 1997, Solar 2002). Desgraciadamente, muchas especies mantenidas en sistemas de cultivo artificial sufren disfunciones reproductivas importantes. Más comúnmente, las hembras inician el desarrollo gonadal en forma normal, pero no alcanzan la maduración final del oocito, la ovulación y/o la puesta (Zohar 1988, Peter y col 1993). Los machos, por su parte, aunque mucho más resistentes a las condiciones ambientales del cultivo y al estrés producido por éste, producen un menor volumen de semen, o bien éste es de mala calidad (Billard 1986, 1989). Manipulaciones de algunos factores ambientales como el fotoperiodo, temperatura, salinidad, volumen del tanque, vegetación del sustrato, etc., pueden a menudo mejorar la calidad de las puestas (Donaldson y Hunter 1983,
The purpose of the research was to determine the influence of industrial wastewater treatment using the Lemna Minor aquatic plant. Certain varieties of macrophyte plants can absorb or retain various contaminants. Thanks to this, it has... more
The purpose of the research was to determine the influence of industrial wastewater treatment using the Lemna Minor aquatic plant. Certain varieties of macrophyte plants can absorb or retain various contaminants. Thanks to this, it has been determined that the variety known as Lemna Minor presents this type of property. Three treatment trials were carried out varying the amounts of Lemna Minor (100, 200, and 300g). They are keeping constant the retention time of 10 days that were analyzed at 3, 6, and 10 days after the treatment and with a constant volume of the residual effluent. The results indicate that in terms of the parameters that determine organic contamination, BOD was reduced by (61 %); COD was reduced by (68 %) and the concentration of total suspended solids by (61 %).
In the scope of a monitoring program to assess the environmental impact of automobile traffic over one main bridge in Lisbon, both water and duckweed (Lemna minor L.) were sampled from the road drainage tanks and analyzed for chemical... more
In the scope of a monitoring program to assess the environmental impact of automobile traffic over one main bridge in Lisbon, both water and duckweed (Lemna minor L.) were sampled from the road drainage tanks and analyzed for chemical elements. Plants uptake Cr, Mn, Cu, and Zn metals from rain water draining the bridge road. Nuclear microprobe elemental maps of cryosections of L. minor tissues showed that incorporated elements were internalized in fronds of the plant. This approach at micrometer level allows a better knowledge of the elemental tissue partitioning in this biomonitor organism.
- by Bárbara Anes and +2
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- Bioaccumulation, Lemna minor
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