Spatial Succession for Degradation of Solid Multicomponent Food Waste and Purification of Toxic Leachate with the Obtaining of Biohydrogen and Biomethane

Abstract

A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the modern recycling technologies can cope with such immense volumes of waste. Microbiological and biotechnological approaches are extremely promising for solving this environmental problem. Moreover, organic waste can serve as the substrate to obtain alternative energy, such as biohydrogen (H2) and biomethane (CH4). This work aimed to design and test new technology for the degradation of food waste, coupled with biohydrogen and biomethane production, as well as liquid organic leachate purification. The effective treatment of waste was achieved due to the application of the specific granular microbial preparation. Microbiological and physicochemical methods were used to measure the fermentation parameters. As a result, a four-module direct flow installation efficiently couples spatial succession of anaerobic and aerobic bacteria with other micro- and macroorganisms to simultaneously recycle organic waste, remediate the resulting leachate, and generate biogas.

A Noxious Weed Ambrosia artemisiifolia L. (Ragweed) as Sustainable Feedstock for Methane Production and Metals Immobilization

“…In the agroindustry, they are used to suppress the growth of phytopathogenic bacteria and fungi and preserve crops [40,41]. Moreover, they are employed in environmental protection biotechnologies to degrade toxic organic [42] and inorganic waste [43]. The use of microorganisms for the biological purification of soil and wastewater from toxic metals is one of the most in-demand fields [44].…”

Універсальна Біотехнологія Знешкодження Токсичних Органічних Відходів І Металів З Отриманням Цінних Продуктів

“…Зброджування твердих відходів у біореакторі приводить до утворення токсичного фільтрату з високим вмістом органічних кислот і спиртів. З використанням явища просторової сукцесії ми досягли цілковитого очищення фільтрату у проточному аеротенку [5].…”