Present scenario and future scope of food waste to biofuel production

Dhiman, Sunny; Mukherjee, Gunjan

doi:10.1111/jfpe.13594

Cited by 36 publications

(7 citation statements)

References 163 publications

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“…to improve the conversion process and extract more value-added products. FW is high in carbohydrates, proteins, nutrients, oils, water, and natural acids; , thus, it poses the potential of fermentative products. , Various value-added products along with bioenergy have also been developed from FW, and the yield is dependent on the components of FW. Table shows the compositions of different FW, which seem to vary depending on the FW sources.…”

Section: Food Waste Valorizationmentioning

confidence: 99%

A Review on the Challenges and Choices for Food Waste Valorization: Environmental and Economic Impacts

et al. 2023

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Valorization of food waste (FW) is instrumental for reducing the environmental and economic burden of FW and transitioning to a circular economy. The FW valorization process has widely been studied to produce various end-use products and summarize them; however, their economic, environmental, and social aspects are limited. This study synthesizes some of the valorization methods used for FW management and produces value-added products for various applications, and also discusses the technological advances and their environmental, economic, and social aspects. Globally, 1.3 billion tonnes of edible food is lost or wasted each year, during which about 3.3 billion tonnes of greenhouse gas is emitted. The environmental (−347 to 2969 kg CO2 equiv/tonne FW) and economic (−100 to $138/tonne FW) impacts of FW depend on the multiple parameters of food chains and waste management systems. Although enormous efforts are underway to reduce FW as well as valorize unavoidable FW to reduce environmental and economic loss, it seems the transdisciplinary approach/initiative would be essential to minimize FW as well as abate the environmental impacts of FW. A joint effort from stakeholders is the key to reducing FW and the efficient and effective valorization of FW to improve its sustainability. However, any initiative in reducing food waste should consider a broader sustainability check to avoid risks to investment and the environment.

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Section: Food Waste Valorizationmentioning

confidence: 99%

A Review on the Challenges and Choices for Food Waste Valorization: Environmental and Economic Impacts

et al. 2023

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“…Forest residues include dead wood and the remnants from wood processing (sawdust, bark and black liquor) [47,122]. Municipal and industry wastes include wastes from the food industry [123,124], including animal rendering [125], municipal solid wastes [126] and sewage sludge [127]. On average, the per capita rate of waste generation is 1.22 t yr −1 for agricultural residues and 0.27 t yr −1 for municipal solid wastes [128], which over a world population in 2018 of 7.59 × 10 9 [129], amounts to approximately 9.54 × 10 9 t yr −1 agricultural waste and 2.05 × 10 9 t yr −1 municipal solid waste (comparable to 2.01 × 10 9 t yr −1 quoted for municipal solid waste by Kaza et al [130]).…”

Section: Use Of Organic Wastes For Energymentioning

confidence: 99%

The role of soils in provision of energy

Smith

Farmer

Smith

et al. 2021

Phil. Trans. R. Soc. B

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Soils have both direct and indirect impacts on available energy, but energy provision, in itself, has direct and indirect impacts on soils. Burning peats provides only approximately 0.02% of global energy supply yet emits approximately 0.7–0.8% of carbon losses from land-use change and forestry (LUCF). Bioenergy crops provide approximately 0.3% of energy supply and occupy approximately 0.2–0.6% of harvested area. Increased bioenergy demand is likely to encourage switching from forests and pastures to rotational energy cropping, resulting in soil carbon loss. However, with protective policies, incorporation of residues from energy provision could sequester approximately 0.4% of LUCF carbon losses. All organic wastes available in 2018 could provide approximately 10% of global energy supply, but at a cost to soils of approximately 5% of LUCF carbon losses; not using manures avoids soil degradation but reduces energy provision to approximately 9%. Wind farms, hydroelectric solar and geothermal schemes provide approximately 3.66% of energy supply and occupy less than approximately 0.3% of harvested area, but if sited on peatlands could result in carbon losses that exceed reductions in fossil fuel emissions. To ensure renewable energy provision does not damage our soils, comprehensive policies and management guidelines are needed that (i) avoid peats, (ii) avoid converting permanent land uses (such as perennial grassland or forestry) to energy cropping, and (iii) return residues remaining from energy conversion processes to the soil. This article is part of the theme issue ‘The role of soils in delivering Nature's Contributions to People’.

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“…The stench and leachate produced by untreated FW can pollute the air, soil and water, leading to the proliferation of harmful microorganisms that endanger human health. However, FW is also a kind of renewable energy, which can be used to produce biogas, ethanol, biodiesel and other energy‐based substances 2,3 . The energy utilization of FW and other organic solid wastes will help reduce dependence on fossil fuels, reduce carbon dioxide emissions from non‐renewable energy sources, and help achieve carbon peak and carbon neutrality.…”

Section: Introductionmentioning

confidence: 99%

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

Chen

Song

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDFood waste (FW) is easily acidified to produce acid inhibition, which limits the treatment efficiency of anaerobic digestion (AD). To improve the AD efficiency of FW, two‐stage anaerobic digestion (TSAD) technique was used to test the effect of food‐to‐microorganism (F/M) ratio on hydrogen production and the effect of Tween 80 addition on methane production. Changes in volatile fatty acids during FW TSAD were analyzed. Furthermore, the energy recovery of different TSAD conditions was compared.RESULTSUnder the condition of F/M = 10, hydrogen production of FW was the highest (102.79 mL g−1 volatile solids (VS)). In the methanogenesis stage of FW, the methane production of different conditions was 351.97–407.11 mL g−1 VS. Kinetic analysis showed that the hydrogen production could be increased by appropriately increasing the F/M ratios, and the time required to reach 90% methane production (t90) in the methanogenesis stage could be shortened by adding Tween 80. Analysis of energy recovery showed that the energy yield of TSAD was 13.01–15.68 kJ g−1 VS, and the average daily energy recovery of hydrogen production stage F/M = 10, methane production stage with 0.1% Tween 80 (A‐10 and M‐10 T) were the highest at t90, which was 9.23 and 4.60 kJ d−1.CONCLUSIONF/M ratio affects hydrogen production, and a suitable F/M ratio can improve the hydrogen production of the TSAD of FW. The addition of Tween 80 can shorten the t90 of the methanogenesis stage. Analysis of energy recovery calculation showed that A‐10 + M‐10 T was more economically rational for TSAD. © 2023 Society of Chemical Industry.

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Present scenario and future scope of food waste to biofuel production

Cited by 36 publications

References 163 publications

A Review on the Challenges and Choices for Food Waste Valorization: Environmental and Economic Impacts

A Review on the Challenges and Choices for Food Waste Valorization: Environmental and Economic Impacts

The role of soils in provision of energy

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

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