Food Waste Utilization for Reducing Carbon Footprints towards Sustainable and Cleaner Environment: A Review

Bhatia, Latika; Jha, Harit; Sarkar, Tanushree; Sarangi, Prakash Kumar

doi:10.3390/ijerph20032318

Cited by 60 publications

(32 citation statements)

References 121 publications

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“…A range of processing processes are used to increase the nutritional content, digestibility, feeding efficiency, removal of toxins, pathogen sanitation, removal of non-edible components, feasibility for long-term storage, transportability, and marketability of FW [ 66 ]. FWs converting to a value-added product, such as animal feed, can enhance food efficiency by lowering the cost of animal feed, resulting in higher profitability for farmers and decreased environmental consequences caused by FW disposal [ 67 ].…”

Section: Methods Of Converting Fws Into Animal Feedmentioning

confidence: 99%

Valorization of Food Waste as Animal Feed: A Step towards Sustainable Food Waste Management and Circular Bioeconomy

Nath

Ojha

Debnath

et al. 2023

Animals

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The growing population and healthy food demands have led to a rise in food waste generation, causing severe environmental and economic impacts. However, food waste (FW) can be converted into sustainable animal feed, reducing waste disposal and providing an alternative protein source for animals. The utilization of FW as animal feed presents a solution that not only tackles challenges pertaining to FW management and food security but also lessens the demand for the development of traditional feed, which is an endeavour that is both resource and environmentally intensive in nature. Moreover, this approach can also contribute to the circular economy by creating a closed-loop system that reduces the use of natural resources and minimizes environmental pollution. Therefore, this review discusses the characteristics and types of FW, as well as advanced treatment methods that can be used to recycle FW into high-quality animal feed and its limitations, as well as the benefits and drawbacks of using FW as animal feed. Finally, the review concludes that utilization of FW as animal feed can provide a sustainable solution for FW management, food security, preserving resources, reducing environmental impacts, and contributing to the circular bioeconomy.

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Section: Methods Of Converting Fws Into Animal Feedmentioning

confidence: 99%

Valorization of Food Waste as Animal Feed: A Step towards Sustainable Food Waste Management and Circular Bioeconomy

Nath

Ojha

Debnath

et al. 2023

Animals

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“…The sustainability conditions of the current sponge-like materials are based on several items, such as (1) waste reduction and utilization: using waste LLDPE as a precursor material significantly reduces plastic waste in the environment 39 . By converting waste into functional adsorbents, our approach addresses the issue of plastic pollution while creating valuable products.…”

Section: Introductionmentioning

confidence: 99%

Thermal conversion of irradiated LLDPE waste into sustainable sponge-like compounds: a novel approach for efficient trace-level oil–water removal

Ghobashy,

Gayed

2024

Sci Rep

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The newest method for recycling waste linear low-density polyethylene (LLDPE) is the thermo-catalytic degradation technique known as catalytic pyrolysis. Typically, it is limited by 500–800 °C high temperatures. Catalytic pyrolysis releases toxins and forms harmful carbonized char. The current study is based on exposing wasted LLDPE to different gamma irradiation doses and then pyrolysis in castor oil (150–300 °C). The output product of Ir-(rLLDPE) is turned into another compound with a new structural architecture (sponge-like). SEM analysis confirms conversion, showing sponge-like spicules and layers. Ir-(rLLDPE) is sponge-like with a soft, malleable, absorbent texture. The DSC demonstrates altered thermal properties, with a melting point at 121 °C splitting into two peaks (endothermic at 117 °C and exothermic at 160 °C). The exothermic peaks signify the curing process of the sponge-like material. Ir-(rLLDPE) is assessed as an adsorbent for aqueous oils and solvents. The study examines irradiation doses, pyrolysis temperature, and time on adsorbent capacity. The oil removal obeys the Langmuir isotherm with monolayer adsorption, with a maximum adsorption capacity of 24.75 g/g of waste oil and 43 g/g of 1,1,2,2-tetrachloroethane. Squashing maintains adsorption after 20 reuses. Data shows sponges effectively clean marine oil spills and solvents.

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“…Second, as an economically feasible feedstock, food waste is gradually becoming an important part of a cleaner and renewable fuel market [ 7 ]. Food waste can be generated during the processes of food distribution, cooking, processing, sale, and storage [ 8 ]. In general, there are four stages of the anaerobic digestion of food waste—hydrolysis, fermentation, acetogenesis, and methanogenesis—with acetate being generated during acetogenesis.…”

Section: Introductionmentioning

confidence: 99%

Application of Acetate as a Substrate for the Production of Value-Added Chemicals in Escherichia coli

Gu,

Li,

Huang

et al. 2024

Microorganisms

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At present, the production of the majority of valuable chemicals is dependent on the microbial fermentation of carbohydrate substrates. However, direct competition is a potential problem for microbial feedstocks that are also used within the food/feed industries. The use of alternative carbon sources, such as acetate, has therefore become a research focus. As a common organic acid, acetate can be generated from lignocellulosic biomass and C1 gases, as well as being a major byproduct in microbial fermentation, especially in the presence of an excess carbon source. As a model microorganism, Escherichia coli has been widely applied in the production of valuable chemicals using different carbon sources. Recently, several valuable chemicals (e.g., succinic acid, itaconic acid, isobutanol, and mevalonic acid) have been investigated for synthesis in E. coli using acetate as the sole carbon source. In this review, we summarize the acetate metabolic pathway in E. coli and recent research into the microbial production of chemical compounds in E. coli using acetate as the carbon source. Although microbial synthetic pathways for different compounds have been developed in E. coli, the production titer and yield are insufficient for commercial applications. Finally, we discuss the development prospects and challenges of using acetate for microbial fermentation.

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Food Waste Utilization for Reducing Carbon Footprints towards Sustainable and Cleaner Environment: A Review

Cited by 60 publications

References 121 publications

Valorization of Food Waste as Animal Feed: A Step towards Sustainable Food Waste Management and Circular Bioeconomy

Valorization of Food Waste as Animal Feed: A Step towards Sustainable Food Waste Management and Circular Bioeconomy

Thermal conversion of irradiated LLDPE waste into sustainable sponge-like compounds: a novel approach for efficient trace-level oil–water removal

Application of Acetate as a Substrate for the Production of Value-Added Chemicals in Escherichia coli

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