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- W4309779404 endingPage "126698" @default.
- W4309779404 startingPage "126698" @default.
- W4309779404 abstract "• A novel bioprocess was designed combining SWP and AD. • SWP increased the methane yield in AD of jabuticaba by-product. • The bioprocess can generate electricity (543 kWh t −1 ) and heat (2,243 MJ t −1 ). • The sustainable bioprocess can avoid a total of 177.54 kg CO 2-eq t −1 . • The digestate generated can be used as a biofertilizer up to 0.3 g/L. The management of agri-food by-products has received worldwide attention due to concerns about the environmental impacts caused by incorrect deposition. This study presented a sustainable bioprocess combining subcritical water pretreatment (SWP) followed by semi-continuous anaerobic digestion (AD) for the valorization of jabuticaba ( Myrciaria cauliflora ) agro-industrial by-product in bioenergy and agricultural fertilizer. The SWP was conducted at 180 °C, 15 MPa, water flow rate of 10 mL min −1 , solvent to feed of 22.5 g g −1 , and a kinetic time of 45 min. The AD process was operated in semi-continuous mode under mesophilic and methanogenic conditions. The results demonstrated that the hydrolysate presented glucose (5.78 g L −1 ), fructose (3.63 g L −1 ), arabinose (1.82 g L −1 ), and cellobiose (1.28 g L −1 ) as major compounds. The use of pretreated jabuticaca by-product increased the methane yield (239.04 L CH 4 kg −1 TVS) in the designed bioprocess combining SWP and AD when compared to the AD without pretreatment (42.31 L CH 4 kg −1 TVS). The methane produced in the bioprocess with SWP followed by AD can generate 543 kWh t −1 of electricity and 2,243.17 MJ t −1 of heat, avoiding a total of 177.54 kg CO 2-eq t −1 . The digestate generated after AD can be used as a biofertilizer up to a concentration of 0.3 g L −1 , without toxic effects on the germination of Lactuca sativa . Finally, the sustainable bioprocess designed could be an alternative to the management of jabuticaba by-product within a circular economy framework, producing bioenergy and agricultural fertilizer that can reduce greenhouse gas emissions and environmental pollution in the food industry." @default.
- W4309779404 created "2022-11-29" @default.
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- W4309779404 date "2023-02-01" @default.
- W4309779404 modified "2023-10-12" @default.
- W4309779404 title "Sustainable bioprocess combining subcritical water pretreatment followed by anaerobic digestion for the valorization of jabuticaba (Myrciaria cauliflora) agro-industrial by-product in bioenergy and biofertilizer" @default.
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- W4309779404 doi "https://doi.org/10.1016/j.fuel.2022.126698" @default.
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