Circular economy-based environmental management using biochar: Driving towards sustainability
Journal
Process Safety and Environmental Protection
Journal Volume
163
Pages
585-600
Date Issued
2022
Author(s)
Abstract
There is a growing interest in developing “circular economy” with the major goal of eliminating waste by appropriate planning. Biochar has recently gained popularity in the environmental sector as a versatile material for waste reduction and increasing the efficacy of the circular economy. It has demonstrated possibilities towards environmental impact, battling climate change, and creating an efficient circular economy model. Despite these positive prognoses, research on biochar's benefits is still widely ongoing. This is interrelated to the biochar's inherent properties that are deeply impacted by certain variables like feedstock types and treatment conditions. In this review, the conversion of waste into biochar and its application in different regions have been discussed while considering the CE. It discusses how waste materials are upcycled to make biochar and then used towards betterment of the environment. It highlights how biochar can be produced from different wastes and can be used in agriculture, wastewater treatment, anaerobic digestion and various other sectors thereby proving its multidimensional role towards protection of the environment and successfully building up a circular economy based environmental management model. This finally ends up closing the loop thereby demonstrating an actual circular economy. © 2022 The Institution of Chemical Engineers
Subjects
Al: Aluminium; Al2O3: Aluminum Oxide; As: Arsenic; Biochar; C: Carbon; Ca: Calcium; Ca: Calcium′; CaO: Calcium oxide; CCE: Calcium carbonate equivalent; Cd: Cadmium; CH4: Methane; Circular economy; Co(OH)2: Cobalt hydroxide; Co: Cobalt; CO2: Carbon dioxide; Cr: Chromium; Cu: Copper; Environmental management; Fe: Iron; H2S: Hydrogen sulfide; HMF: Hydroxymethylfurfural; HNO3: Nitric acid; K2CO3: Potassium carbonate; Pyrolysis; Wastewater treatment
Other Subjects
Alumina; Aluminum oxide; Anaerobic digestion; Arsenic; Calcite; Calcium carbonate; Carbon dioxide; Climate models; Environmental impact; Environmental management; Iron oxides; Lime; Sulfur compounds; Sustainable development; Wastewater treatment; Al2O3: aluminum oxide; Al: aluminum; As: arsenic; Biochar; Ca: calcium; Ca: calcium′; CaO: calcium oxide; CCE: calcium carbonate equivalent; CH 4; CH4: methane; Circular economy; Co(OH)2: cobalt hydroxide; CO2: carbon dioxide; Co: cobalt; Cr: chromium; Cu: copper; Fe: iron; H2S: hydrogen sulphide; HMF: hydroxymethylfurfural; HNO3: nitric acid; Hydroxymethylfurfural; K2CO3: potassium carbonate; Cobalt compounds
Type
review