Waste to wealth: valorization of food waste for the production of fuels and chemicals

Edgard Gnansounou, Binod Parameswaran
Elsevier, 2020
Chapitre de livre

Food waste is becoming a major global concern especially in developing and underdeveloped countries. Vegetable and food waste biomass is continuously generated in huge amounts. Its major impact on the environment is the generation of greenhouse gases. Food wastes are generated at different stages like production, handling, storage, processing, as well as consumption. First-generation technologies used for food waste disposal include landfill, incineration, and composting. But these strategies are not satisfactory for food wastes since they produce toxic methane gas and bad odor and have slow reaction kinetics. This can be addressed to a certain extent by adopting alternative strategies of food waste valorization by converting wastes to value-added products like fuels and chemicals. Food waste valorization will provide a green process with least environmental impact. This chapter discusses the latest trends in food waste valorization for the production of fuels and chemicals.

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Edgard Gnansounou, Binod Parameswaran
Elsevier, 2020
Chapitre de livre

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https://infoscience.epfl.ch/record/276283?ln=fr

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Conversion of food and kitchen waste to value-added products

Edgard Gnansounou

Food and kitchen waste - omnipresent in every corner of the world serve as an excellent source of value added products owing to high organic content. Regardless of existence of various traditional methods of land filling or biogas production used to harness food waste energy, effective conversion of food to valuable resources is often challenged by its heterogenous nature and high moisture content. The current paper tries to lay down the prospects and consequences associated with food waste management. The various social, economical and environmental concerns associated with food waste management especially in terms of green house gas emission and extended rate of leachate generation also has been discussed. The difficulties in proper collection, storage and bioconversion of food waste to valuable by-products are pointed as a big hurdle in proper waste management. Finally, the wide array of value added products developed from food waste after pretreatment are also enlisted to emphasis the prospects of food waste management.

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD2019

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Trends in mitigation of industrial waste: Global health hazards, environmental implications and waste derived economy for environmental sustainability

Edgard Gnansounou

Majority of industries, in order to meet the technological development and consumer demands generate waste. The untreated waste spreads out toxic and harmful substances in the environment which serves as a breeding ground for pathogenic microorganisms thus causing severe health hazards. The three industrial sectors namely food, agriculture, and oil industry are among the primary organic waste producers that affect urban health and economic growth. Conventional treatment generates a significant amount of greenhouse gases which further contributes to global warming. Thus, the use of microbes for utilization of this waste, liberating CO2 offers an indispensable tool. The simultaneous production of value-added products such as bioplastics, biofuels, and biosurfactants increases the economics of the process and contributes to environmental sustainability. This review comprehensively summarized the composition of organic waste generated from the food, agriculture, and oil industry. The linkages between global health hazards of industrial waste and environmental implications have been uncovered. Stare-of-the-art information on their subsequent utilization as a substrate to produce value-added products through bio-routes has been elaborated. The research gaps, economical perspective(s), and future research directions have been identified and discussed to strengthen environmental sustainability.

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Déchet

Un déchet est un objet en fin de vie ou une substance ayant subi une altération physique ou chimique, qui ne présente alors plus d'utilité ou est destiné à l'élimination. Le mot vient de l'ancien fran

Gaz à effet de serre

Les gaz à effet de serre (GES) sont des composants gazeux qui absorbent le rayonnement infrarouge émis par la surface terrestre et contribuent ainsi à l'effet de serre. L'augmentation de leur concen

Environmental issues

Environmental issues are disruptions in the usual function of ecosystems. Further, these issues can be caused by humans (human impact on the environment) or they can be natural. These issues are con