Valorization of wastewater: A paradigm shift towards circular bioeconomy and sustainability.

Autor: Kundu D; Waste Re-processing Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440 020, India., Dutta D; Waste Re-processing Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440 020, India., Samanta P; Department of Environmental Science, Sukanta Mahavidyalaya, University of North Bengal, West Bengal 735210, India., Dey S; Department of Environmental Science, The University of Burdwan, Burdwan, West Bengal 713 104, India., Sherpa KC; Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India., Kumar S; Waste Re-processing Division, CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur 440 020, India. Electronic address: s_kumar@neeri.res.in., Dubey BK; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Nov 20; Vol. 848, pp. 157709. Date of Electronic Publication: 2022 Jul 29.
DOI: 10.1016/j.scitotenv.2022.157709
Abstrakt: Limitation in the availability of natural resources like water is the main drive for focussing on resource recovery from wastewater. Rapid urbanization with increased consumption of natural resources has severely affected its management and security. The application of biotechnological processes offers a feasible approach to concentrating and transforming wastewater for resource recovery and a step towards a circular economy. Wastewater generally contains high organic materials, nutrients, metals and chemicals, which have economic value. Hence, its management can be a valuable resource through the implementation of a paradigm transformation for value-added product recovery. This review focuses on the circular economy of "close loop" process by wastewater reuse and energy recovery identifying the emerging technologies for recovering resources across the wastewater treatment phase. Conventional wastewater treatment technologies have been discussed along with the advanced treatment technologies such as algal treatment, anammox technology, microbial fuel cells (MFC). Apart from recovering energy in the form of biogas and biohydrogen, second and third-generation biofuels as well as biohythane and electricity generation have been deliberated. Other options for resource recovery are single-cell protein (SCP), biopolymers as well as recovery of metals and nutrients. The paper also highlights the applications of treated wastewater in agriculture, aquaponics, fisheries and algal cultivation. The concept of Partitions-release-recover (PRR) has been discussed for a better understanding of the filtration treatment coupled with anaerobic digestion. The review provides a critical evaluation on the importance of adopting a circular economy and their role in achieving sustainable development goals (SDGs). Thus, it is imperative that such initiatives towards resource recovery from wastewater through integration of concepts can aid in providing wastewater treatment system with resource efficiency.
Competing Interests: Declaration of competing interest Authors declare that they have no known competing financial interests or personal relationships that could have influenced the work presented in this manuscript.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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