De-construction of major Indian cereal crop residues through chemical pretreatment for improved biogas production: An overview

Kumar, Subodh; Paritosh, Kunwar; Pareek, Nidhi; Chawade, Aakash; Vivekanand, Vivekanand

doi:10.1016/j.rser.2018.03.049

Cited by 100 publications

(33 citation statements)

References 95 publications

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“…High acid concentrations could cause corrosion problems and as a result high maintenance costs [84] and further, generate inhibitor compounds at high rate and therefore increase the purification costs. Many studies confirmed that the dilute acid treatment is the most promising technology for lignocellulose pretreatment [85]. According to Syaichurrozi et al [86], pretreatment of Salvinia molesta pretreatment by 2%, 4%, and…”

Section: Acidmentioning

confidence: 99%

Insight into Pretreatment Methods of Lignocellulosic Biomass to Increase Biogas Yield: Current State, Challenges, and Opportunities

et al. 2019

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Lignocellulosic biomass is recalcitrant due to its heterogeneous structure, which is one of the major limitations for its use as a feedstock for methane production. Although different pretreatment methods are being used, intermediaries formed are known to show adverse effect on microorganisms involved in methane formation. This review, apart from highlighting the efficiency and limitations of the different pretreatment methods from engineering, chemical, and biochemical point of views, will discuss the strategies to increase the carbon recovery in the form of methane by way of amending pretreatments to lower inhibitory effects on microbial groups and by optimizing process conditions.

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Section: Acidmentioning

confidence: 99%

Insight into Pretreatment Methods of Lignocellulosic Biomass to Increase Biogas Yield: Current State, Challenges, and Opportunities

et al. 2019

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“…Lignocellulosic residues and stubble are promising alternatives to provide fuel and energy security by utilizing them as a source of biomethane production 1,2 . These resources have mainly 9–80% cellulose followed by 10–50% hemicellulose and lignin accounts for 5–35% of the lignocellulosic residues.…”

Section: Introductionmentioning

confidence: 99%

“…These resources have mainly 9–80% cellulose followed by 10–50% hemicellulose and lignin accounts for 5–35% of the lignocellulosic residues. Cellulose and hemicellulose are digestible components while lignin shows recalcitrant nature in the anaerobic digestion process 1 . Biogas generated by digesting lignocellulosic residues anaerobically may be utilized directly in combined heat and power (CHP) units, cooking or may be purified for transportation purposes.…”

Section: Introductionmentioning

confidence: 99%

Prioritization of solid concentration and temperature for solid state anaerobic digestion of pearl millet straw employing multi-criteria assessment tool

Paritosh

Pareek

Chawade

et al. 2019

Sci Rep

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India produces huge quantities of agricultural residues and stubbles and mainly disposed by burning on site causing air pollution. The organic matter present in the residues and stubble may be utilized by anaerobic digestion as a source of renewable energy subsequently reducing emission of greenhouse gases caused by burning. In the present study, solid state anaerobic digestion (SSAD) of pearl millet straw was investigated at mesophilic and thermophilic temperature with four different total solid (TS) content (15, 20, 25 and 30%). Results showed that 20 and 25% TS generated maximum methane (124.1 ± 7 and 162.4 ± 9L/kg VS) at mesophilic and thermophilic temperature respectively. However, increasing TS content beyond 25% did not show significant increment on methane yield. Analytical analysis showed correlation between the reduction of volatile solids and methane yield as well as VFA (volatile fatty acid) accumulation at high TS content. Also, VlseKriterijuska Optimizacija Komoromisno Resenje (VIKOR) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods as MultiCriteria Decision Making modelling (MCDM) applied to select best possible alternative for SSAD of pearl millet. MCDM analysis showed that VIKOR method endorsed the experimental results.

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“…These lignocellulosic biomass and residues may be utilised as sustainable source of biofuels for bioeconomic development using various biotechnological processes. Also, the agricultural biomass may contribute to energy security of India [3]. Lignocellulosic biomass comprises of cellulose and hemicellulose as polymeric sugars and lignin to protect plant from oxidative stress, pathogens etc.…”

Section: Introductionmentioning

confidence: 99%

“…While complex nature of lignocellulosic biomass limits hydrolysis and growth of cellulolytic microbes, excess hydrolysis may trigger enhanced acidogenesis and volatile fatty acids (VFAs) accumulation which may hamper the methanogens and thus the subsequent methane yield. To enhance the hydrolysis of lignocellulosic biomass various treatment approaches have been explored [3,5].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Hydrolysis and Syntropy Simultaneously in Solid State Anaerobic Digestion: A GRA – Taguchi Based Study and Techno-Economic Assessment for Austainable Bioeconomy

Paritosh

Mathur

Pareek

et al. 2020

Preprint

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Abstract Background: Solid-state anaerobic digestion of agricultural stubble is attractive technology for energy and bioeconomy as well as it may lead to transitioning towards greenhouse gas neutrality; yet hydrolysis and syntropy affects the process and makes it economically nonviable. In this regard, present study investigates the effect of alkali and biochar addition for simultaneous increment of hydrolysis and syntropy for higher methane yield from pearl millet straw. Further, taguchi based design of experiment was coupled with grey relation analysis for multiple output evaluation and detailed techno-economic assessment was performed. Results: Study showed that 0.5 g/100g pearl millet straw of alkali and 10 g/L of biochar was the optimised dosing along with 20% total solid concentration and 4 as feedstock/inoculum ratio. Statistically, contribution of biochar and alkali was 48 and 21% respectively on the multiple output. The confirmation test revealed that hydrolysis rate constant, k for reactor having optimised conditions was 0.0521 d-1 while for control, it was 0.0595 d-1. Cumulative methane yield was also increased by 1.8-fold for optimised condition. Techno-economic assessment showed that capital cost and electrical efficiency of combined heat and power unit have dominant effect on the investment. Solid state anaerobic digestion of pearl millet straw with alkali and biochar showed US$ 25652 of net present value and showed to have payback time of 8.2 years with 11% of internal rate of return.Conclusion: The simultaneous increment of hydrolysis rate and syntrophic activity in optimized condition helped to achieve higher methane yield. Techno-economic assessment showed that shorter payback time and higher internal rate of return, making large scale project profitable and viable which may endorse sustainable bioeconomy with lower greenhouse gases.

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De-construction of major Indian cereal crop residues through chemical pretreatment for improved biogas production: An overview

Cited by 100 publications

References 95 publications

Insight into Pretreatment Methods of Lignocellulosic Biomass to Increase Biogas Yield: Current State, Challenges, and Opportunities

Insight into Pretreatment Methods of Lignocellulosic Biomass to Increase Biogas Yield: Current State, Challenges, and Opportunities

Prioritization of solid concentration and temperature for solid state anaerobic digestion of pearl millet straw employing multi-criteria assessment tool

Enhancing Hydrolysis and Syntropy Simultaneously in Solid State Anaerobic Digestion: A GRA – Taguchi Based Study and Techno-Economic Assessment for Austainable Bioeconomy

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