Current status, opportunities and challenges in anaerobic digestion in Indian context: An overview

Bandgar, P.S.; Jain, Sudhir; Panwar, N. L.

doi:10.1016/j.biteb.2021.100830

Cited by 14 publications

(3 citation statements)

References 79 publications

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“…The AD system has a very delicate microbial ecosystem 105 that depends on the temperature (T), pH level, retention time, C/N ratio, organic loading rate, and other operational parameters. AD of DCM in the thermophilic range increases the CH 4 yield by 22% 51 .…”

Section: Considerations For Implementing Pretreatment Of Dcmmentioning

confidence: 99%

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Nadan

Baroutian

2023

J of Chemical Tech & Biotech

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The continuing increase in dairy cattle farming poses a significant threat to the environment due to the release of greenhouse gases (GHG) from uncontrolled manure generation. Waste valorisation of dairy cow manure (DCM) through anaerobic digestion (AD) provides an avenue for simultaneously managing DCM and mitigating climate change through renewable energy. This review provides an overview of DCM production and the potential use of the AD processes for waste management and renewable energy generation in Fiji. Fiji dairy farms are geographically unevenly distributed and have considerably small herd sizes. With pretreatment techniques, biogas production from DCM at these farms has the potential to be optimised, economically feasible, and viable. Biogas production from DCM can be enhanced by approximately 125% with pretreatment techniques. Hence, this study reviews various pretreatment methods, their economic and environmental benefits, and AD's general challenges and limitations. This research reveals a need for further investigation into the optimisation of biogas and bio-methane potential of DCM, specifically with the economic viability and the environmental considerations of implementing these techniques at Fijian dairy farms.

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Section: Considerations For Implementing Pretreatment Of Dcmmentioning

confidence: 99%

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Nadan

Baroutian

2023

J of Chemical Tech & Biotech

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“…The World Biogas Association endorses establishing full-scale AD plants, which could achieve a local circular economy and reduce the greenhouse gases (predominantly methane) that AD is known for (World Biogas Association, 2021). Co-digesting FVW and DFL could benefit developing countries like India to achieve substantial renewable energy power production (Bandgar et al, 2021). The co-digestion of DFL and FVW could remarkably enhance the dissemination of the biogas technology more efficiently, tackling the challenges.…”

Section: The Future Prospects Practical Implications and Recommendationsmentioning

confidence: 99%

Anaerobic co-digestion of dry fallen leaves, fruit/vegetable wastes and cow dung without an active inoculum – A biomethane potential study

D’Silva

Isha

Verma

et al. 2022

Bioresource Technology Reports

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“…In 2014, Germany fulfilled 4.7% of its electricity and 1% of its heat demand from biogas (Lin et al, 2017). India has announced that 5,000 biogas-generating plants will be installed by 2023-24, producing 15 million tons (MT) of biogas annually (Bandgar et al, 2021). Saudi Arabia aims to achieve approximately 50% of total electricity production from renewable energy by 2030 (Saudi green initiatives, 2023).…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Biogas enhancement in the anaerobic digestion of thermo-chemically pretreated sludge by stimulating direct interspecies electron transfer by biochar and graphene

Almegbl,

Munshi,

Khursheed

2024

Front. Chem. Eng.

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It is necessary to pretreat waste-activated sludge (WAS) to disintegrate the sludge matrix and amend its anaerobic digestion (AD) with carbon-based materials (CMs) to accelerate direct interspecies electron transfer (DIET) in order to realize the maximum biogas potential of abundant and habitat-threatening organic WAS. The AD of WAS pretreated thermo-chemically at 0.5% NaOH (g/g dry sludge) and 125 °C microwave irradiation was amended by biochar doses of 0–40 g/L and graphene doses of 50–1,000 mg/L in the batch operation mode. Hybrid pretreatment of WAS deteriorated dewaterability but solubilized 38% of total chemical oxygen demand (COD). AD amended with 20 g/L biochar and 100 mg/L graphene had the optimum accumulative methane yield of 183.6 and 153.8 mL/gVS, respectively, which correspond to 42.8% and 24.8% increases compared to an unamended control assay with maximum methane content of 70.3% and 71.9%, respectively. The digestate of biochar- and graphene-amended assays resulted in higher TS% and alkalinity, reduced sCOD, VFA, and turbidity, and increased particle size distribution compared to control. Biochar-amended digestate had improved dewaterability, while digestate of graphene-amended assays resulted in worse dewaterability than control. The t-test showed a significant difference between the biochar and graphene amended batch assays, while principal component analysis (PCA) indicated that biogas yield was closely correlated with pH. CM-amended batch assays demonstrated superb fitting with modified Gompertz, logistic, and first-order models with a coefficient of determination above 0.97. Microbial community abundance and diversity were affected by CMs amendment, resulting in increased acetoclastic methanogen growth and transformed methanogenic metabolic pathways. An extended pilot-scale study and techno-economic and life cycle assessments are required to investigate environmental impacts and feasibility.

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Current status, opportunities and challenges in anaerobic digestion in Indian context: An overview

Cited by 14 publications

References 79 publications

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Anaerobic co-digestion of dry fallen leaves, fruit/vegetable wastes and cow dung without an active inoculum – A biomethane potential study

Biogas enhancement in the anaerobic digestion of thermo-chemically pretreated sludge by stimulating direct interspecies electron transfer by biochar and graphene

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