Papers by Brajendra K Tewary
The growth performance of selected tree species on five coal mine overburden dumps in India has b... more The growth performance of selected tree species on five coal mine overburden dumps in India has been studied for two years. Results indicate that the survival rate of tree species has been from 49 to 65% after two years of overburden dump revegetation. The values for plant height, diameter increment and biomass accumulation have ranged between 116 and 301 cm, 21 and 50 mm and 0.1 and 4.23 kg/plant respectively across all sites. Among the selected tree species Dalbergia sisoo (Sisum) and Leucena leucocephala (Subabool) were observed to be the fastest growing tree species at the Mandaman, Chora and Mudidih sites. But, Azadirachta indica (Neem) and Prospopis juliflora (Prosopis) have exhibited maximum growth at the Ghugus and South Balanda sites. Therefore, results of these pilot studies will help in the selection of plant species for the bioreclamation of large scale overburden dumps with similar conditions.
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1996
Environmental Geology, 2000
A study has been conducted at the Bicholim iron-ore mine, North Goa, India to investigate the hyd... more A study has been conducted at the Bicholim iron-ore mine, North Goa, India to investigate the hydrogeological continuity between the mine's open pit and surrounding villages. Water resource accounting by demarcating different watersheds has also been carried out to analyse the major causes of groundwater scarcity in the region during dry periods. A resistivity survey and a ground penetrating radar survey were completed around the periphery of open pits, the surrounding village areas and Mayem Lake. The results of the two independent surveys and other related data confirm that there is no observable hydrogeological continuity between the pits, nearby villages and Mayem Lake. Hence, there may not be any significant effect on surrounding water resources due to mining or mine dewatering. Water resource accounting has revealed that only 15±20% of 3500 mm precipitation per annum becomes part of the groundwater resource. The remainder of the annual precipitation is lost as heavy runoff, evapotranspiration and subsurface capillary moisture. Closely spaced wells in the region have also aggravated the groundwater scarcity problem due to draw down effects. Therefore, an effective water resource conservation plan is required for the region to overcome the problem.
Surface mine development and underground mine working below piezometric level invariably change t... more Surface mine development and underground mine working below piezometric level invariably change the hydraulic gradient, thus affecting ground and surface water flow and water quality. The presence of water in mining sites creates a range of operational and stability problems and requires a drainage plan to avoid slope stability problem, oxidation of metallic sulfides and corrosion of mining machinery and
Environmental Earth Sciences, 2013
ABSTRACT The study was taken up to establish the distributions of metals as well as to assess the... more ABSTRACT The study was taken up to establish the distributions of metals as well as to assess the extent of anthropogenic inputs into the Subarnarekha River. Bed sediments were collected; analyzed for metals; and assessed with the index of geo-accumulation (I geo), enrichment factor (EF) value, concentration factor (CF) and pollution load index (PLI). Metals in the sediment were variable in the river and there are major pollution problems at certain locations. The average concentrations of Fe, Cu, Cr, Pb, Mn, Ni, Zn, Co and Ba in mg/kg was found to be 30,802 ± 11,563, 69 ± 57, 111 ± 74, 75 ± 61, 842 ± 335, 42 ± 22, 100 ± 39, 15 ± 4 and 698 ± 435, respectively. The I geo, EF, CF and PLI indices showed that the contamination of Pb and Cu was more serious than that of Ni, Zn, Co and Ba, whereas the presence of Fe, Mn and Cr might be primarily from natural sources. The contamination of the sediments with metals at few locations is attributed to mining, industries and other anthropogenic causes. Principal component analysis was employed to better comprehend the controlling factors of sediment quality. The statistical analysis of inter-metallic relationship revealed the high degree of correlation among the metals indicated their identical behaviour during transport. PCA outcome of three factors together explained 83.8 % of the variance with >1 initial eigenvalue indicated both innate and anthropogenic activities are contributing factors as source of metal profusion in Subarnarekha River basin.The overall study reveals moderately serious pollution in the river basin principally in some locations under the anthropogenic influences.
The growth performance of selected tree species on five coal mine overburden dumps in India has b... more The growth performance of selected tree species on five coal mine overburden dumps in India has been studied for two years. Results indicate that the survival rate of tree species has been from 49 to 65% after two years of overburden dump revegetation. The values for plant height, diameter increment and biomass accumulation have ranged between 116 and 301 cm, 21 and 50 mm and 0.1 and 4.23 kg/plant respectively across all sites. Among the selected tree species Dalbergia sisoo (Sisum) and Leucena leucocephala (Subabool) were observed to be the fastest growing tree species at the Mandaman, Chora and Mudidih sites. But, Azadirachta indica (Neem) and Prospopis juliflora (Prosopis) have exhibited maximum growth at the Ghugus and South Balanda sites. Therefore, results of these pilot studies will help in the selection of plant species for the bioreclamation of large scale overburden dumps with similar conditions.
Environmental Earth Sciences, 2012
An attempt has been made to carry out qualitative assessment of mine water discharges from the se... more An attempt has been made to carry out qualitative assessment of mine water discharges from the selected coal mining areas of Jharia, Raniganj and West Bokaro coalfields of Damodar Basin. 184 mine water samples were analyzed for pH, electrical conductivity (EC), major cations (Ca, Mg, Na, K), major anions (HCO3, SO4, Cl, NO3), and heavy metals (Fe, Mn, Cu, Zn,
Journal of environmental biology / Academy of Environmental Biology, India, 2013
Fly ash from Chandrapura Thermal Power Station, Bokaro, Jharkhand (India) was used for amending s... more Fly ash from Chandrapura Thermal Power Station, Bokaro, Jharkhand (India) was used for amending soil at levels 0, 60, 120, 180 and 240 tons ha(-1) in which, brinjal (Solanum melongena) was grown and elemental residues of amended soil and plant parts were enumerated. Fly ash amendments caused significant improvement in soil quality, water holding capacity (52.64-65.76), pH (6.45-7.05), composition of photosynthetic pigment (chlorophyll a, chlorophyll b, total chlorophyll and carotenoid) and few growth parameters (fresh weight, root length, shoot length) of brinjal with the increase in fly ash amendments. Fruit (edible part) of plants grown in fly ash amended soils had metal residues (mg kg(-1)) like Cr (0.80-1.16), Co (0.34-1.46), Ni (0.85-1.00), Zn (24.41-32.33), Cu (10.61-15.49), and Mo (0.49-1.46) within the permissible limits. Results indicate that soil amended with fly ash at 180 tons ha(-1), not only improved the physical properties of the soil but also contributed to the bette...
Atmospheric Environment. Part A. General Topics, 1990
Environmental Earth Sciences, 2011
... The drinking water quality assessment indicates that number of mine water samples have high T... more ... The drinking water quality assessment indicates that number of mine water samples have high TDS ... Keywords Jharia coalfield Á Mine water chemistry Á Water quality Á Trace metals Á SAR ... is not usable and may contain unacceptable levels of heavy metals, toxic anions, organic ...
Social Indicators Research, 2012
Maslow’s hierarchy-of-needs theory has been used to predict development of Quality of Life (QOL) ... more Maslow’s hierarchy-of-needs theory has been used to predict development of Quality of Life (QOL) in countries over time. In this paper an attempt has been taken to derive a methodological validation of quality of life questionnaire which have been prepared for the study area. The objective of the study is to standardize a questionnaire tool to assess the QoL of
Mine Water and the Environment, 2011
In the Jharia Coalfields, Dhanbad, India, huge quantities of water are pumped out of underground ... more In the Jharia Coalfields, Dhanbad, India, huge quantities of water are pumped out of underground mines to make mining possible. The water contains high concentrations of total hardness, which makes it unsuitable for domestic use. Waste fly ash generated nearby from burning the coal in thermal power plants can be converted into a zeolitic mineral, and used to treat the
Mine Water and the Environment, 2013
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Papers by Brajendra K Tewary