Ankush karemore | Indian Institute of Technology Kharagpur (original) (raw)
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Papers by Ankush karemore
Recent patents on biotechnology, Jan 30, 2016
In recent times, when energy crisis compounded by global warming and climate change is receiving ... more In recent times, when energy crisis compounded by global warming and climate change is receiving worldwide attention, the emergence of algae, as a better feedstock for third-generation biofuels than energy crops or plants, holds lots of promises. Compared to conventional biofuels feedstocks, algae offer several advantages and can alone produce the significant amount of biofuels sustainably in a shorter period to fulfill the rising demand. Towards commercialisation, there have been numerous efforts put into for the development of algae-derived biofuel. This article reviews and summarizes the recent inventions and the current trends that are reported and captured in relevant patents pertaining to the novel methods of algae biomass cultivation and processing for biofuels and value-added products while highlighting the recent advancement in techniques and technologies for microalgal biofuel production. Various steps involved in the production of algal biofuels have been considered in th...
Recent patents on biotechnology, Jan 30, 2016
In recent times, when energy crisis compounded by global warming and climate change is receiving ... more In recent times, when energy crisis compounded by global warming and climate change is receiving worldwide attention, the emergence of algae, as a better feedstock for third-generation biofuels than energy crops or plants, holds lots of promises. Compared to conventional biofuels feedstocks, algae offer several advantages and can alone produce the significant amount of biofuels sustainably in a shorter period to fulfill the rising demand. Towards commercialisation, there have been numerous efforts put into for the development of algae-derived biofuel. This article reviews and summarizes the recent inventions and the current trends that are reported and captured in relevant patents pertaining to the novel methods of algae biomass cultivation and processing for biofuels and value-added products while highlighting the recent advancement in techniques and technologies for microalgal biofuel production. Various steps involved in the production of algal biofuels have been considered in th...
Applied Energy, 2011
The enzymatic production of biodiesel by transesterification of cottonseed oil was studied using ... more The enzymatic production of biodiesel by transesterification of cottonseed oil was studied using low cost crude pancreatic lipase as catalyst in a batch system. The effects of the critical process parameters including water percentage, methanol:oil ratio, enzyme concentration, buffer pH and reaction temperature were determined. Maximum conversion of 75-80% was achieved after 4 h at 37°C, pH 7.0 and with 1:15 M ratio of oil to methanol, 0.5% (wt of oil) enzyme and water concentration of 5% (wt of oil). Various organic solvents were tested among which a partially polar solvent (t-butanol) was found to be suitable for the reaction. The major fuel characteristics like specific gravity, kinematic viscosity, flash point and calorific value of the 20:80 blends (B20) of the fatty acid methyl esters with petroleum diesel conformed very closely to those of American Society for Testing Materials (ASTM) standards.
Algal biomass can serve as rich source of bioproducts including lipids for diverse commercial app... more Algal biomass can serve as rich source of bioproducts including lipids for diverse commercial applications. Both biomass production and lipid accumulation are limited by several factors, of which nutrients play a vital role. In the present investigation, the nutritional requirement for the growth by a (an autotrophic) Chlorococcum infusionum was determined using a Plackett-Burman based statistical screening experiment. Five out of the fifteen factors of a reported production medium were found to be significantly affecting the biomass growth. The components NaNO 3 , K 2 HPO 4 , FeSO 4 .7H 2 O and KOH had direct proportional correlation with biomass production, while MgSO 4 showed inverse proportional relationship in the selected experimental range. Nitrogen was the most influential factor with an effect contribution of 45.77% and a very low p-value of b 0.001. The most favorable nitrogen source was potassium nitrate which could replace both sodium nitrate and potassium hydroxide. More than two fold increase in biomass concentration was achieved by screening and standardizing the media components of Bold Basal Medium. Lipid accumulation under normal condition was 12-15% dry cell weight (dcw). Under nitrogen starvation condition, it was 30-35% dcw. However, a semi-starvation condition at 1.75 mM of sodium nitrate induced lipid production as high as 40 ± 2% dcw. FAME analysis in GC showed the presence of more saturated fatty acids. Results obtained in this work can further be applied to optimize production of algal biomass and lipid for applications like biofuel, fish or animal feed, fertilizer, etc. Also information obtained could be exploited for wastewater treatment processes.
Recent patents on biotechnology, Jan 30, 2016
In recent times, when energy crisis compounded by global warming and climate change is receiving ... more In recent times, when energy crisis compounded by global warming and climate change is receiving worldwide attention, the emergence of algae, as a better feedstock for third-generation biofuels than energy crops or plants, holds lots of promises. Compared to conventional biofuels feedstocks, algae offer several advantages and can alone produce the significant amount of biofuels sustainably in a shorter period to fulfill the rising demand. Towards commercialisation, there have been numerous efforts put into for the development of algae-derived biofuel. This article reviews and summarizes the recent inventions and the current trends that are reported and captured in relevant patents pertaining to the novel methods of algae biomass cultivation and processing for biofuels and value-added products while highlighting the recent advancement in techniques and technologies for microalgal biofuel production. Various steps involved in the production of algal biofuels have been considered in th...
Recent patents on biotechnology, Jan 30, 2016
In recent times, when energy crisis compounded by global warming and climate change is receiving ... more In recent times, when energy crisis compounded by global warming and climate change is receiving worldwide attention, the emergence of algae, as a better feedstock for third-generation biofuels than energy crops or plants, holds lots of promises. Compared to conventional biofuels feedstocks, algae offer several advantages and can alone produce the significant amount of biofuels sustainably in a shorter period to fulfill the rising demand. Towards commercialisation, there have been numerous efforts put into for the development of algae-derived biofuel. This article reviews and summarizes the recent inventions and the current trends that are reported and captured in relevant patents pertaining to the novel methods of algae biomass cultivation and processing for biofuels and value-added products while highlighting the recent advancement in techniques and technologies for microalgal biofuel production. Various steps involved in the production of algal biofuels have been considered in th...
Applied Energy, 2011
The enzymatic production of biodiesel by transesterification of cottonseed oil was studied using ... more The enzymatic production of biodiesel by transesterification of cottonseed oil was studied using low cost crude pancreatic lipase as catalyst in a batch system. The effects of the critical process parameters including water percentage, methanol:oil ratio, enzyme concentration, buffer pH and reaction temperature were determined. Maximum conversion of 75-80% was achieved after 4 h at 37°C, pH 7.0 and with 1:15 M ratio of oil to methanol, 0.5% (wt of oil) enzyme and water concentration of 5% (wt of oil). Various organic solvents were tested among which a partially polar solvent (t-butanol) was found to be suitable for the reaction. The major fuel characteristics like specific gravity, kinematic viscosity, flash point and calorific value of the 20:80 blends (B20) of the fatty acid methyl esters with petroleum diesel conformed very closely to those of American Society for Testing Materials (ASTM) standards.
Algal biomass can serve as rich source of bioproducts including lipids for diverse commercial app... more Algal biomass can serve as rich source of bioproducts including lipids for diverse commercial applications. Both biomass production and lipid accumulation are limited by several factors, of which nutrients play a vital role. In the present investigation, the nutritional requirement for the growth by a (an autotrophic) Chlorococcum infusionum was determined using a Plackett-Burman based statistical screening experiment. Five out of the fifteen factors of a reported production medium were found to be significantly affecting the biomass growth. The components NaNO 3 , K 2 HPO 4 , FeSO 4 .7H 2 O and KOH had direct proportional correlation with biomass production, while MgSO 4 showed inverse proportional relationship in the selected experimental range. Nitrogen was the most influential factor with an effect contribution of 45.77% and a very low p-value of b 0.001. The most favorable nitrogen source was potassium nitrate which could replace both sodium nitrate and potassium hydroxide. More than two fold increase in biomass concentration was achieved by screening and standardizing the media components of Bold Basal Medium. Lipid accumulation under normal condition was 12-15% dry cell weight (dcw). Under nitrogen starvation condition, it was 30-35% dcw. However, a semi-starvation condition at 1.75 mM of sodium nitrate induced lipid production as high as 40 ± 2% dcw. FAME analysis in GC showed the presence of more saturated fatty acids. Results obtained in this work can further be applied to optimize production of algal biomass and lipid for applications like biofuel, fish or animal feed, fertilizer, etc. Also information obtained could be exploited for wastewater treatment processes.