Department Of Environmental Science And Technology

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    Vermicomposting of Green Organic Wastes Using Eisenia Fetida Under Field Conditions: a Case Study of a Green Campus
    (Springer Science and Business Media B.V., 2023-01-02T00:00:00) Rupani, Parveen Fatemeh; Embrandiri, Asha; Garg, Vinod Kumar; Abbaspour, Madjid; Dewil, Raf; Appels, Lise
    Green leafy vegetables are part of the Mediterranean and Middle East diets, which generate tonnes of green leafy waste. Massive production of such wastes is a challenge for policymakers, scientists, and urban local bodies to use them in a sustainable manner to convert them into valuable products. Higher education institutions such as universities are among the sectors that produce considerable quantities of organic waste daily, generated from restaurants and cafeterias. Hence, this study explores the waste treatment of university campuses using a biotechnological approach, i.e., vermicomposting technology, for sustainable management. In this study, vermicomposting was carried out using three types of green wastes [Persian-Leek (Allium ampeloprasum var. persicum), Parsley (Petroselinum crispum), and Dill (Anthemum graveolens)] obtained from restaurants and cafeterias operating on a university campus. The experiment was conducted by preparing different treatments using green vegetable wastes in different ratios with paper waste and animal manure and vermicomposted using the epigeic earthworm Eisenia fetida. The results showed that the earthworms could not survive in 100% vegetable waste due to the feed's high moisture and nutrient content. Additionally, a mixture containing 50%, 25%, and 25% vegetable waste, cow dung, and paper waste is compatible with an efficient vermicomposting process. Parsley supported earthworm survival for 45�days. Moreover, the microbial assay showed that the vermicompost contained less than 3�CFU�g?1 Salmonella sp. This confirms that the obtained vermicompost is safe for agricultural use. Therefore, vermicomposting fresh vegetable waste is a viable process to achieve the aim of a green campus. Graphical Abstract: [Figure not available: see fulltext.]. � 2023, The Author(s), under exclusive licence to Springer Nature B.V.
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    Vermicomposting technology for organic waste management
    (Elsevier, 2022-09-16T00:00:00) Sharma, Kavita; Garg, V.K.
    Present chapter reports vermicomposting technology for the treatment of non-toxic biodegradable wastes. These wastes generated from domestic, commercial, agricultural and industrial activities. Several methods are used for the waste management but still huge quantities of organic wastes remain unattended which is a cause of concern. Therefore, scientific and sustainable interventions are needed for the management of organic wastes. Vermicomposting is one such technique which is economically viable and has manifold advantages over other non-scientific waste disposal techniques. Vermicomposting has been well addressed in recent years and several researchers have investigated the effectiveness of vermitechnology to treat organic wastes. Although organic wastes are heterogeneous in nature but its biodegradable nature offers an immense opportunity for vermicomposting. Combined action of earthworm and microbes mineralize organic waste and transformed it into manure that has potential to solve several soil fertility and pollution related issues. Vermicomposting can also potentially be used as a bioremediation technique. Use of vermicomposting for waste treatment and bioremediation on one hand ensure agricultural and environmental sustainability and on the other hand manure is provided. Earthworms, a product of vermicomposting, can be used as feed in aquaculture and poultry industry. � 2023 Elsevier Inc. All rights reserved.