arti devi | Central University of Jammu, Jammu, J&K, India (original) (raw)

Papers by arti devi

Environmental Sustainability

Demand for alternative and renewable sources of energy is gaining worldwide attention due to fast... more Demand for alternative and renewable sources of energy is gaining worldwide attention due to fast depletion of fossil fuels and growing population. At present the global needs of energy are largely fulfilled by fossil fuels resulting into their depletion. However, the burning of fossil fuels contributes towards environmental issues like global warming and pollution. Biofuels like bioethanol and biodiesel are gaining popularity worldwide due to being renewable, eco-friendly and environmentally safe. Lignocellulosic biomass is available in plenty and can be transformed into bioethanol by steps including pretreatment, hydrolysis and fermentation. Various physical, chemical and biological pretreatments are used for making biomass accessible for enzymatic hydrolysis, however, these approaches are having some limitations which can be overcomes by alternative, cost-effective and environmental friendly technologies like nanotechnology. In enzymatic hydrolysis process, magnetic nanoparticles can be used for immobilization of enzymes, which makes the process more effective. The microorganisms can also be immobilized in various matrix including magnetic nanoparticles, which can enhance ethanol production. Moreover, magnetic nanomaterials can be recycled by using magnetic field and can be reused again. Nanocatalyst can also be employed in transesterification process for biodiesel production and for ameliorating the yields. Nanotechnology can play a key role in biofuel production by reducing processing cost and enhancing productivity. The present review discusses the role of nanotechnology and nanomaterials in pretreatment, enzymatic hydrolysis and fermentation steps during bioethanol production, and in transesterification for enhancing efficiency of the biodiesel production process.

BioEnergy Research

Lignocellulosic biomass generated from different sectors (agriculture, forestry, industrial) act ... more Lignocellulosic biomass generated from different sectors (agriculture, forestry, industrial) act as biorefinery precursor for production of second-generation (2G) bioethanol and other biochemicals. The integration of various conversion techniques on a single platform under biorefinery approach for production of biofuel and industrially important chemicals from LCB is gaining interest worldwide. The waste generated on utilization of bio-resources is almost negligible or zero in a biorefinery along with reduced greenhouse gas emissions, which supports the circular bioeconomy concept. The economic viability of a lignocellulosic biorefinery depends upon the efficient utilization of three major components of LCB-cellulose, hemicellulose and lignin. The heterogeneous structure and recalcitrant nature of LCB is main obstacle in its valorization into bioethanol and other value-added products. The success of bioconversion process depends upon methods used during pre-treatment, hydrolysis and fermentation processes. The cost involved in each step of the bioconversion process affects the viability of cellulosic ethanol. The lignocellulose biorefinery has ample scope, but much-focused research is required to fully utilize major parts of lignocellulosic biomass with zero wastage. The present review entails lignocellulosic biomass valorization for ethanol production, along with different steps involved in its production. Various value-added products produced from LCB components were also discussed. Recent technological advances and significant challenges in bioethanol production are also highlighted in addition to future perspectives.

Environmental Sustainability, 2021

The present study aimed at cellulase production from two fungal strains of Aspergillus niger and ... more The present study aimed at cellulase production from two fungal strains of Aspergillus niger and Aspergillus heteromorphus under solid-state fermentation (SSF) and submerged fermentation (SmF) conditions. The agricultural residue (rice straw) was tested for its suitability as solid support as well as a carbon source for microbial growth. The potential of fungi to produce enzyme rely on the species of the fungus, growth substrate (lignocellulosic biomass) and culturing method. In the present work, rice straw was used as a substrate for fungal growth under SSF and SmF conditions. Maximum cellulase activities as 6.4 IU/g FPase and 125 IU/g CMCase under SSF condition, and 3.8 IU/g FPase and 94 IU/g CMCase under SmF were achieved on the 5th day of incubation from A. heteromorphus . Similarly, FPase and CMCase activity for A. niger under SSF were 5.8 IU/g and 113 IU/g, respectively, while FPase activity 3.5 IU/g and CMCase activity 88 IU/g was observed under SmF condition. A. heteromorphu...

Biomass Conversion and Biorefinery, 2021

Bioresource Technology Reports

Abstract The enzyme cellulase is a consortium of three enzymes — exo-glucanase, endo-glucanase an... more Abstract The enzyme cellulase is a consortium of three enzymes — exo-glucanase, endo-glucanase and β-glucosidase, which can be produced by various microorganisms naturally and is ecologically important as it recycle cellulose in biosphere. Cellulase is a potential candidate in numerous industries as textile, detergent, pulp and paper, bioactive compounds, food, animal feed, biofuel, etc. Due to its immense applications in different fields, cellulase is intensively researched by both academics and industries. The driving force behind the research on cellulase is its commercial potential and enormous applications in various industries. The objective of this article is to discuss fungal cellulase complex, production, and industrial application. Consideration is also given to recent production processes as submerged and solid state fermentation including different types of reactors used for cellulase production. The strategies for cost reduction and hyper cellulase production like mixed culture and genetic manipulation are also discussed along with global players of cellulase producers/suppliers.

Journal of Environmental Chemical Engineering

Environmental Sustainability

Demand for alternative and renewable sources of energy is gaining worldwide attention due to fast... more Demand for alternative and renewable sources of energy is gaining worldwide attention due to fast depletion of fossil fuels and growing population. At present the global needs of energy are largely fulfilled by fossil fuels resulting into their depletion. However, the burning of fossil fuels contributes towards environmental issues like global warming and pollution. Biofuels like bioethanol and biodiesel are gaining popularity worldwide due to being renewable, eco-friendly and environmentally safe. Lignocellulosic biomass is available in plenty and can be transformed into bioethanol by steps including pretreatment, hydrolysis and fermentation. Various physical, chemical and biological pretreatments are used for making biomass accessible for enzymatic hydrolysis, however, these approaches are having some limitations which can be overcomes by alternative, cost-effective and environmental friendly technologies like nanotechnology. In enzymatic hydrolysis process, magnetic nanoparticles can be used for immobilization of enzymes, which makes the process more effective. The microorganisms can also be immobilized in various matrix including magnetic nanoparticles, which can enhance ethanol production. Moreover, magnetic nanomaterials can be recycled by using magnetic field and can be reused again. Nanocatalyst can also be employed in transesterification process for biodiesel production and for ameliorating the yields. Nanotechnology can play a key role in biofuel production by reducing processing cost and enhancing productivity. The present review discusses the role of nanotechnology and nanomaterials in pretreatment, enzymatic hydrolysis and fermentation steps during bioethanol production, and in transesterification for enhancing efficiency of the biodiesel production process.

BioEnergy Research

Lignocellulosic biomass generated from different sectors (agriculture, forestry, industrial) act ... more Lignocellulosic biomass generated from different sectors (agriculture, forestry, industrial) act as biorefinery precursor for production of second-generation (2G) bioethanol and other biochemicals. The integration of various conversion techniques on a single platform under biorefinery approach for production of biofuel and industrially important chemicals from LCB is gaining interest worldwide. The waste generated on utilization of bio-resources is almost negligible or zero in a biorefinery along with reduced greenhouse gas emissions, which supports the circular bioeconomy concept. The economic viability of a lignocellulosic biorefinery depends upon the efficient utilization of three major components of LCB-cellulose, hemicellulose and lignin. The heterogeneous structure and recalcitrant nature of LCB is main obstacle in its valorization into bioethanol and other value-added products. The success of bioconversion process depends upon methods used during pre-treatment, hydrolysis and fermentation processes. The cost involved in each step of the bioconversion process affects the viability of cellulosic ethanol. The lignocellulose biorefinery has ample scope, but much-focused research is required to fully utilize major parts of lignocellulosic biomass with zero wastage. The present review entails lignocellulosic biomass valorization for ethanol production, along with different steps involved in its production. Various value-added products produced from LCB components were also discussed. Recent technological advances and significant challenges in bioethanol production are also highlighted in addition to future perspectives.

Environmental Sustainability, 2021

The present study aimed at cellulase production from two fungal strains of Aspergillus niger and ... more The present study aimed at cellulase production from two fungal strains of Aspergillus niger and Aspergillus heteromorphus under solid-state fermentation (SSF) and submerged fermentation (SmF) conditions. The agricultural residue (rice straw) was tested for its suitability as solid support as well as a carbon source for microbial growth. The potential of fungi to produce enzyme rely on the species of the fungus, growth substrate (lignocellulosic biomass) and culturing method. In the present work, rice straw was used as a substrate for fungal growth under SSF and SmF conditions. Maximum cellulase activities as 6.4 IU/g FPase and 125 IU/g CMCase under SSF condition, and 3.8 IU/g FPase and 94 IU/g CMCase under SmF were achieved on the 5th day of incubation from A. heteromorphus . Similarly, FPase and CMCase activity for A. niger under SSF were 5.8 IU/g and 113 IU/g, respectively, while FPase activity 3.5 IU/g and CMCase activity 88 IU/g was observed under SmF condition. A. heteromorphu...

Biomass Conversion and Biorefinery, 2021

Bioresource Technology Reports

Abstract The enzyme cellulase is a consortium of three enzymes — exo-glucanase, endo-glucanase an... more Abstract The enzyme cellulase is a consortium of three enzymes — exo-glucanase, endo-glucanase and β-glucosidase, which can be produced by various microorganisms naturally and is ecologically important as it recycle cellulose in biosphere. Cellulase is a potential candidate in numerous industries as textile, detergent, pulp and paper, bioactive compounds, food, animal feed, biofuel, etc. Due to its immense applications in different fields, cellulase is intensively researched by both academics and industries. The driving force behind the research on cellulase is its commercial potential and enormous applications in various industries. The objective of this article is to discuss fungal cellulase complex, production, and industrial application. Consideration is also given to recent production processes as submerged and solid state fermentation including different types of reactors used for cellulase production. The strategies for cost reduction and hyper cellulase production like mixed culture and genetic manipulation are also discussed along with global players of cellulase producers/suppliers.

Journal of Environmental Chemical Engineering