Santosh Yadav - Academia.edu (original) (raw)
Papers by Santosh Yadav
Bioresource …, 2008
The aims of the study were to evaluate the effect of organic wastes (biosludge and dairy sludge) ... more The aims of the study were to evaluate the effect of organic wastes (biosludge and dairy sludge) and biofertilizer (Azotobacter chroococcum) on the planting conditions of Jatropha curcas in metal contaminated soils. Results showed that the plants survival rate in heavy ...
International Journal of …, 2010
Page 1. Int. J. Environment and Pollution, Vol. 43, Nos. 1/2/3, 2010 251 Copyright © 2010 Indersc... more Page 1. Int. J. Environment and Pollution, Vol. 43, Nos. 1/2/3, 2010 251 Copyright © 2010 Inderscience Enterprises Ltd. Biotechnological approach for ecosystem restoration of mine spoil dump in India Asha A. Juwarkar, Santosh Kumar Yadav and Prashant R. Thawale* ...
Journal of hazardous …, 2010
Chromium (Cr) tolerant and accumulation capability of Jatropha curcas L. was tested in Cr spiked ... more Chromium (Cr) tolerant and accumulation capability of Jatropha curcas L. was tested in Cr spiked soil amended with biosludge and biofertilizer. Plants were cultivated in soils containing 0, 25, 50, 100 and 250 mg kg −1 of Cr for one year with and without amendment. Plant tissue analysis showed that combined application of biosludge and biofertilizer could significantly reduce Cr uptake and boost the plant biomass, whereas biofertilizer alone did not affect the uptake and plant growth. Antioxidative responses of catalase (CAT), ascorbate peroxidase (APX) and glutathione S-transferase (GST) were increased with increasing Cr concentration in plant. Hyperactivity of the CAT and GST indicated that antioxidant enzymes played an important role in protecting the plant from Cr toxicity. However, APX took a little part in detoxification of H 2 O 2 due to its sensitivity to Cr. Therefore, reduced APX activity was recorded. Reduced glutathione (GSH) activity was recorded in plant grown on/above 100 mg kg −1 of Cr in soil. The study concludes that J. curcas could grow under chromium stress. Furthermore, the results encouraged that J. curcas is a suitable candidate for the restoration of Cr contaminated soils with the concomitant application of biosludge and biofertilizer.
Bioresource …, 2009
The present study was planned to remediate the metalloid and metal contaminated soil by using non... more The present study was planned to remediate the metalloid and metal contaminated soil by using non-edible and economic plant species Jatropha curcas L. The experiment was conducted on pots to improve the survival rate, metal tolerance and growth response of the plant on soil; having different concentrations of arsenic, chromium and zinc. The soil was amended with dairy sludge and bacterial inoculum (Azotobacter chroococcum) as biofertilizer. The results of the study showed that the bioaccumulation potential was increased with increase in metalloid and metal concentration in soil system. Application of dairy sludge significantly reduces the DTPA-extractable As, Cr and Zn concentration in soil. The application of organic amendment stabilizes the As, Cr and Zn and reduced their uptake in plant tissues.
Environmental …, 2009
An important goal of ecological rehabilitation is to accelerate natural successional processes to... more An important goal of ecological rehabilitation is to accelerate natural successional processes to increase biological productivity, soil fertility and biotic control over biogeochemical fluxes within the recovering ecosystems. A new approach called Microbe Assisted Green Technology (MAGT) is an integrated biotechnological approach developed at National Environmental Engineering Research Institute (NEERI) through exhaustive laboratory as well as field studies and serve as a model for land reclamation and development of lush green vegetation on mine overburdens. One year old seedlings of native tree species were planted on 6.3 ha area of manganese mine overburden at Gumgaon under Manganese Ore India Ltd., Maharashtra, India. Continuous efforts resulted in nutrient rich soil with high N, P, K and organic carbon; well developed biodiversity, including bacteria, fungi, higher plants (more than 350 species) and different classes of animals. Planted trees accumulated 698 t ha( - 1) above ground biomass and 143 t ha( - 1) below ground mass. This was achieved in 18 years by MAGT, which otherwise takes hundreds of years.
… monitoring and assessment, 2008
The pot experiments were conducted to evaluate the effect of different concentrations of arsenic,... more The pot experiments were conducted to evaluate the effect of different concentrations of arsenic, chromium and zinc contaminated soils, amended with biosludge and biofertilizer on the growth of Jatropha curcas which is a biodiesel crop. The results further showed that biosludge alone and in combination with biofertilizer significantly improved the survival rates and enhanced the growth of the plant. With the amendments, the plant was able to grow and survive upto 500, 250 and 4,000mg kg −1 of As, Cr and Zn contaminated soils, respectively. The results also showed that zinc enhanced the growth of J. curcas more as compared to other metals contaminated soils. The heavy metal accumulation in plant increased with increasing concentrations of heavy metals in soil, where as a significant reduction in the metal uptake in plant was observed, when amended with biosludge and biofertilizer and biosludge alone. It seems that the organic matter present in the biosludge acted as metal chelator thereby reducing the toxicity of metals to the plant. Findings suggest that plantation of J. curcas may be promoted in metal contaminated soils, degraded soils or wasteland suitably after amending with organic waste.
Jatropha, Challenges for a New Energy Crop, 2012
Wastelands are the degraded and unutilized lands due to different constraints. The metal contamin... more Wastelands are the degraded and unutilized lands due to different constraints. The metal contaminated lands are ecologically unstable and are unsuitable for cultivation due to decline in their physico-chemical properties, biological quality and productivity. Phytoremediation is an emerging green technology which is based on potential of plants/trees to remove pollutants from contaminated soils/ecosystem. J. curcas has potential for phytoremediation of soil contaminated with heavy metals, salts and hydrocarbons, etc. Phytoremediation of metal contaminated soil with non-edible plants like J. curcas is suitable for its integration in different agroforestry systems. Besides having phytoremediation capabilities, J.curcas produces seeds for bio-diesel and its domestication can provide means of ecofriendly, socioeconomic management involving income generation, climate change mitigation, soft farming and sustainable development of reclaimed sites.
Bioresource …, 2008
The aims of the study were to evaluate the effect of organic wastes (biosludge and dairy sludge) ... more The aims of the study were to evaluate the effect of organic wastes (biosludge and dairy sludge) and biofertilizer (Azotobacter chroococcum) on the planting conditions of Jatropha curcas in metal contaminated soils. Results showed that the plants survival rate in heavy ...
International Journal of …, 2010
Page 1. Int. J. Environment and Pollution, Vol. 43, Nos. 1/2/3, 2010 251 Copyright © 2010 Indersc... more Page 1. Int. J. Environment and Pollution, Vol. 43, Nos. 1/2/3, 2010 251 Copyright © 2010 Inderscience Enterprises Ltd. Biotechnological approach for ecosystem restoration of mine spoil dump in India Asha A. Juwarkar, Santosh Kumar Yadav and Prashant R. Thawale* ...
Journal of hazardous …, 2010
Chromium (Cr) tolerant and accumulation capability of Jatropha curcas L. was tested in Cr spiked ... more Chromium (Cr) tolerant and accumulation capability of Jatropha curcas L. was tested in Cr spiked soil amended with biosludge and biofertilizer. Plants were cultivated in soils containing 0, 25, 50, 100 and 250 mg kg −1 of Cr for one year with and without amendment. Plant tissue analysis showed that combined application of biosludge and biofertilizer could significantly reduce Cr uptake and boost the plant biomass, whereas biofertilizer alone did not affect the uptake and plant growth. Antioxidative responses of catalase (CAT), ascorbate peroxidase (APX) and glutathione S-transferase (GST) were increased with increasing Cr concentration in plant. Hyperactivity of the CAT and GST indicated that antioxidant enzymes played an important role in protecting the plant from Cr toxicity. However, APX took a little part in detoxification of H 2 O 2 due to its sensitivity to Cr. Therefore, reduced APX activity was recorded. Reduced glutathione (GSH) activity was recorded in plant grown on/above 100 mg kg −1 of Cr in soil. The study concludes that J. curcas could grow under chromium stress. Furthermore, the results encouraged that J. curcas is a suitable candidate for the restoration of Cr contaminated soils with the concomitant application of biosludge and biofertilizer.
Bioresource …, 2009
The present study was planned to remediate the metalloid and metal contaminated soil by using non... more The present study was planned to remediate the metalloid and metal contaminated soil by using non-edible and economic plant species Jatropha curcas L. The experiment was conducted on pots to improve the survival rate, metal tolerance and growth response of the plant on soil; having different concentrations of arsenic, chromium and zinc. The soil was amended with dairy sludge and bacterial inoculum (Azotobacter chroococcum) as biofertilizer. The results of the study showed that the bioaccumulation potential was increased with increase in metalloid and metal concentration in soil system. Application of dairy sludge significantly reduces the DTPA-extractable As, Cr and Zn concentration in soil. The application of organic amendment stabilizes the As, Cr and Zn and reduced their uptake in plant tissues.
Environmental …, 2009
An important goal of ecological rehabilitation is to accelerate natural successional processes to... more An important goal of ecological rehabilitation is to accelerate natural successional processes to increase biological productivity, soil fertility and biotic control over biogeochemical fluxes within the recovering ecosystems. A new approach called Microbe Assisted Green Technology (MAGT) is an integrated biotechnological approach developed at National Environmental Engineering Research Institute (NEERI) through exhaustive laboratory as well as field studies and serve as a model for land reclamation and development of lush green vegetation on mine overburdens. One year old seedlings of native tree species were planted on 6.3 ha area of manganese mine overburden at Gumgaon under Manganese Ore India Ltd., Maharashtra, India. Continuous efforts resulted in nutrient rich soil with high N, P, K and organic carbon; well developed biodiversity, including bacteria, fungi, higher plants (more than 350 species) and different classes of animals. Planted trees accumulated 698 t ha( - 1) above ground biomass and 143 t ha( - 1) below ground mass. This was achieved in 18 years by MAGT, which otherwise takes hundreds of years.
… monitoring and assessment, 2008
The pot experiments were conducted to evaluate the effect of different concentrations of arsenic,... more The pot experiments were conducted to evaluate the effect of different concentrations of arsenic, chromium and zinc contaminated soils, amended with biosludge and biofertilizer on the growth of Jatropha curcas which is a biodiesel crop. The results further showed that biosludge alone and in combination with biofertilizer significantly improved the survival rates and enhanced the growth of the plant. With the amendments, the plant was able to grow and survive upto 500, 250 and 4,000mg kg −1 of As, Cr and Zn contaminated soils, respectively. The results also showed that zinc enhanced the growth of J. curcas more as compared to other metals contaminated soils. The heavy metal accumulation in plant increased with increasing concentrations of heavy metals in soil, where as a significant reduction in the metal uptake in plant was observed, when amended with biosludge and biofertilizer and biosludge alone. It seems that the organic matter present in the biosludge acted as metal chelator thereby reducing the toxicity of metals to the plant. Findings suggest that plantation of J. curcas may be promoted in metal contaminated soils, degraded soils or wasteland suitably after amending with organic waste.
Jatropha, Challenges for a New Energy Crop, 2012
Wastelands are the degraded and unutilized lands due to different constraints. The metal contamin... more Wastelands are the degraded and unutilized lands due to different constraints. The metal contaminated lands are ecologically unstable and are unsuitable for cultivation due to decline in their physico-chemical properties, biological quality and productivity. Phytoremediation is an emerging green technology which is based on potential of plants/trees to remove pollutants from contaminated soils/ecosystem. J. curcas has potential for phytoremediation of soil contaminated with heavy metals, salts and hydrocarbons, etc. Phytoremediation of metal contaminated soil with non-edible plants like J. curcas is suitable for its integration in different agroforestry systems. Besides having phytoremediation capabilities, J.curcas produces seeds for bio-diesel and its domestication can provide means of ecofriendly, socioeconomic management involving income generation, climate change mitigation, soft farming and sustainable development of reclaimed sites.