Papers by Meenakshi Suhag
of forestland into agricultural land without appropriate measures to conserve SOM leads to the de... more of forestland into agricultural land without appropriate measures to conserve SOM leads to the degradation of physical and rheological soil properties. Scientific Reports 10(1): 1-12.
CRC Press eBooks, Mar 30, 2023
International advanced research journal in science, engineering and technology, Dec 20, 2015
Biomass, as a renewable resource, has the potential to decrease our dependence on fossil fuels, p... more Biomass, as a renewable resource, has the potential to decrease our dependence on fossil fuels, provide energy security and mitigate environmental problems. Shifting dependence from petroleum-based to renewable biomass-based resources is generally viewed as key to the sustainable development and effective management of greenhouse gas emissions. There has been an increasing research interest in the assessment of bio-sourced materials recovered from residual biomass and their conversion techniques. Biomass which is generally considered as less important due to its light weight, bulkiness and less economic value can be a valuable feedstock in biorefineries. Many countries of the world are now on the way to effectively utilizing the so called neglected energy source for achieving greater and cleaner energy efficiency by adopting biorefinery approach. This review paper hereby critically examine the idea of biorefineries as a strategy for sustainability by using different available biomass feedstocks, techniques for their multipurpose conversion into useful chemicals, fuel and materials, and the associated challenges on the basis of relevant researches.
Carbohydrate Polymers, Mar 1, 2015
Lignocellulosic materials can be explored as one of the sustainable substrates for bioethanol pro... more Lignocellulosic materials can be explored as one of the sustainable substrates for bioethanol production through microbial intervention as they are abundant, cheap and renewable. But at the same time, their recalcitrant structure makes the conversion process more cumbersome owing to their chemical composition which adversely affects the efficiency of bioethanol production. Therefore, the technical approaches to overcome recalcitrance of biomass feedstock has been developed to remove the barriers with the help of pretreatment methods which make cellulose more accessible to the hydrolytic enzymes, secreted by the microorganisms, for its conversion to glucose. Pretreatment of lignocellulosic biomass in cost effective manner is a major challenge to bioethanol technology research and development. Hence, in this review, we have discussed various aspects of three commonly used pretreatment methods, viz., steam explosion, acid and alkaline, applied on various lignocellulosic biomasses to augment their digestibility alongwith the challenges associated with their processing.
SN applied sciences, Jul 29, 2020
The present work reveals the potential applicability of banana leaf waste as feedstock for bioeth... more The present work reveals the potential applicability of banana leaf waste as feedstock for bioethanol production as very less work has been reported on this feedstock. For achieving the same, the performance of crude cellulases of Aspergillus niger JD-11 is explored for saccharification of untreated and pretreated (alkaline, dilute acid and steam) banana leaf waste. Therefore, to determine the best saccharifying conditions, the effects of various parameters such as enzyme loading (5-15 FPU/g), temperature (40-50 °C), surfactant addition (0.05-0.15% Tween 80 and PEG 6000) and substrate concentrations (2-6%) were studied at 150 rpm and pH 5.0. The crude cellulases yielded maximum reducing sugars (524.83 mg/g) from the dilute acid pretreated banana leaf waste at 45 °C, 15 FPU/g enzyme loading and 2% substrate loading in the presence of 0.15% PEG 6000 (w/v) as surfactant. The fermentation of enzymatic hydrolysate was carried out using initial reducing sugars concentration of 40 g/L in the medium at pH 5.5, 150 rpm and 30 °C for 30 h with the help of Saccharomyces cerevisiae. Ethanol production was estimated at every 6 h and maximum ethanol yield of 0.38 g/g sugar and productivity of 1.28 g/L/h was obtained after 12 h of fermentation of banana leaf waste hydrolysate. Thus, the easily obtained banana leaf waste could be a promising feedstock for bioethanol production.
CRC Press eBooks, Jul 29, 2021
Journal of Biochemical Technology
Enzyme and Microbial Technology
Sustainable Butanol Biofuels
Journal of Agriculture Research and Technology, 2022
of forestland into agricultural land without appropriate measures to conserve SOM leads to the de... more of forestland into agricultural land without appropriate measures to conserve SOM leads to the degradation of physical and rheological soil properties. Scientific Reports 10(1): 1-12.
AQUA — Water Infrastructure, Ecosystems and Society
The present study was carried out to assess the water availability, hygiene practices, and sanita... more The present study was carried out to assess the water availability, hygiene practices, and sanitary conditions in the households of open defecation-free (ODF) villages after achieving ODF status. Monitoring was conducted from 360 households of 9 ODF villages from 3 blocks of the Kurukshetra district of north India, using a questionnaire. The results interpreted that 78.33% of the surveyed population were using water supplied from government borewells and 65.55% of respondents agreed that their water is safe for drinking as they did not have any water-related diseases. Many respondents (57.2%) replied that someone in their family had suffered from waterborne disease in the preceding year. About 42.8% of households were treating their drinking water at the house level through methods like boiling, chlorination, and reverse osmosis systems. 90.8% of respondents said that they have access to a functional latrine facility. However, 5% population responded that they still prefer fields fo...
inpressco.com
The use of bioethanol can reduce our dependence on fossil fuels, while at the same time decreasin... more The use of bioethanol can reduce our dependence on fossil fuels, while at the same time decreasing net emissions of carbon dioxide, the main greenhouse gas. However, large-scale production of bioethanol is being increasingly criticized for its use of food sources as ...
The use of chemical fertilizers (e.g. urea, calcium nitrate, ammonium sulphate, diammonium phosph... more The use of chemical fertilizers (e.g. urea, calcium nitrate, ammonium sulphate, diammonium phosphate etc.) have a great importance for the world’s food production as it works as a fast food for plants causing them to grow more rapidly and efficiently. While adverse effects are being noticed due to the excessive and imbalanced use of these synthetic inputs. Moreover, persistent use of conventional chemical fertilizers subverts the soil ecology, disrupt environment, degrade soil fertility and consequently shows harmful effects on human health and contaminates ground water. For these reasons, biofertilizers, the organic substances, which make use of microorganisms to increase the fertility of soil, has been identified as harmless input help in safeguarding the soil health and also the quality of crop products. Biofertilizers add nutrients through the natural processes of nitrogen fixation, solubilising phosphorus, and stimulating plant growth through the synthesis of growth promoting s...
Basic Concepts in Environmental Biotechnology
SN Applied Sciences
The present work reveals the potential applicability of banana leaf waste as feedstock for bioeth... more The present work reveals the potential applicability of banana leaf waste as feedstock for bioethanol production as very less work has been reported on this feedstock. For achieving the same, the performance of crude cellulases of Aspergillus niger JD-11 is explored for saccharification of untreated and pretreated (alkaline, dilute acid and steam) banana leaf waste. Therefore, to determine the best saccharifying conditions, the effects of various parameters such as enzyme loading (5-15 FPU/g), temperature (40-50 °C), surfactant addition (0.05-0.15% Tween 80 and PEG 6000) and substrate concentrations (2-6%) were studied at 150 rpm and pH 5.0. The crude cellulases yielded maximum reducing sugars (524.83 mg/g) from the dilute acid pretreated banana leaf waste at 45 °C, 15 FPU/g enzyme loading and 2% substrate loading in the presence of 0.15% PEG 6000 (w/v) as surfactant. The fermentation of enzymatic hydrolysate was carried out using initial reducing sugars concentration of 40 g/L in the medium at pH 5.5, 150 rpm and 30 °C for 30 h with the help of Saccharomyces cerevisiae. Ethanol production was estimated at every 6 h and maximum ethanol yield of 0.38 g/g sugar and productivity of 1.28 g/L/h was obtained after 12 h of fermentation of banana leaf waste hydrolysate. Thus, the easily obtained banana leaf waste could be a promising feedstock for bioethanol production.
IARJSET, 2015
Biomass, as a renewable resource, has the potential to decrease our dependence on fossil fuels, p... more Biomass, as a renewable resource, has the potential to decrease our dependence on fossil fuels, provide energy security and mitigate environmental problems. Shifting dependence from petroleum-based to renewable biomass-based resources is generally viewed as key to the sustainable development and effective management of greenhouse gas emissions. There has been an increasing research interest in the assessment of bio-sourced materials recovered from residual biomass and their conversion techniques. Biomass which is generally considered as less important due to its light weight, bulkiness and less economic value can be a valuable feedstock in biorefineries. Many countries of the world are now on the way to effectively utilizing the so called neglected energy source for achieving greater and cleaner energy efficiency by adopting biorefinery approach. This review paper hereby critically examine the idea of biorefineries as a strategy for sustainability by using different available biomass feedstocks, techniques for their multipurpose conversion into useful chemicals, fuel and materials, and the associated challenges on the basis of relevant researches.
During the last past decades considerably large efforts have been made to optimize the production... more During the last past decades considerably large efforts have been made to optimize the production of lignocellulose derived fuel ethanol production which is economically feasible. Lignocellulosic materials serve as abundant feedstock, to produce fuel ethanol from renewable resources at reasonable costs. Following the pretreatment, the enzymatic hydrolysis process can be run separately (SHF) or simultaneously (SSF) with fermentation. But, there are some technological barriers such as toxic inhibitors released from the pretreatment of lignocellulosic feedstock's, lower scarification rates by enzymes and simultaneous and rapid fermentation of hexoses and pentose sugars, which needs to be addressed for efficient conversion of lignocellulosic biomass to bioethanol. The review paper covers all these aspects, challenges and development in the field of fermentation.
Bioethanol production from lignocellulosic material (banana peduncle) as a substrate using microo... more Bioethanol production from lignocellulosic material (banana peduncle) as a substrate using microorganism Klyveromyces marxianus MTCC 1389 was carried out in this study. The substrate was prepared by mechanical grinding, followed by dilute acidic treatment using H SO with various concentrations such as 1, 2 and 3%, respectively. Temperature was maintained at 2 4 150°C for breaking the glycosidic linkage and converting into monomer. The chemical composition and concentration of various constituents in the raw material was characterized. Fermentation was carried out at various temperatures (25, 30, 35 and 40°C) and pH (4.0, 4.5, 5.0 and 5.5). Batch fermentation kinetics of bioethanol production was studied. The maximum biomass and ethanol yield was achieved at 40°C and pH 4.5 with specific growth-1-1-1 rate (μ) 0.021 hr , biomass yield (Y) 14.7 g l and bioethanol yield (Y) 21.89 g l. x/s p/s Lignocellulosic material obtained from waste banana peduncle can be utilized for bioethanol production. Acid hydrolysis, Banana peduncle, Bioethanol, Klyveromyces marxianus, Lignocellulose Production of bioethanol from lignocellulosic banana peduncle waste using Kluveromyces marxianus
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Papers by Meenakshi Suhag