Comparative life cycle assessment of sequential chemical and electrochemical processes for the treatment of industrial textile wastewater

Journal of Solid State Electrochemistry, Journal Year: 2024, Volume and Issue: unknown

Published: July 4, 2024

Abstract Fenton-based processes, chemical and electrochemical, have attracted the interest of industrial academic researchers for wastewater treatment. However, deficiency rigorous comparison between different methods, including assessment their impact on environment, has hindered large-scale application. This study reports first time sustainability raw textile treatment through two sequential Coagulation-Flocculation-Fenton-Neutralization (CF-F-N) Coagulation-Flocculation-Electro-Fenton-Neutralization (CF-EF-N), based Life Cycle Assessment (LCA) approach. The CF-F-N CF-EF-N were optimized at laboratory scale compared LCA, using IPCC-2013 ReCiPe-2016 midpoint endpoint methods. highest CO 2 emissions relied primary by CF. due to high amount hazardous sludge generated technology necessary its disposal (i.e., 16.89 kg -Eq/FU underground deposit in security cells or 47.52 incineration) as well consumption reagents required (alum, 7.72 -Eq/FU; slaked lime, 5.56 -Eq/FU). Regarding EF-N presented lower carbon footprint (CFP) than F-N (14.74 vs. 20.74 Electricity (87.02% total CFP) (88.63% denoted main environmental hotspot during F-N, respectively. EF-N, had an inferior incidence 14 18 categories analyzed method level. is result low auxiliary chemicals. electricity was also found EF-N. level showed that resulted load all categories. economic performance (11.91 USD/m 3 13.66 CF-F-N) LCA demonstrated competitiveness electrochemical process one. can be considered more environmentally sustainable technology.

Language: Английский

A potential closed-loop reutilization of iron sludge for wastewater treatment through the solid state reaction with spent coffee grounds

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107200 - 107200

Published: April 1, 2025

Language: Английский

Environmental and Economic Evaluation of the Sequential Combination of Coagulation–Flocculation with Different Electro-Fenton-Based Configurations for the Treatment of Raw Textile Wastewater

Water, Journal Year: 2024, Volume and Issue: 16(15), P. 2154 - 2154

Published: July 30, 2024

This study reports, for the first time, on assessment of a multistage sequential system composed coagulation–flocculation with different electro-Fenton-based configurations, followed by neutralization (N), treatment raw textile wastewater heavily contaminated acid black 194 dye and other pollutants. Electrochemical peroxidation (ECP-N), electro-Fenton (EF-N) peroxi-coagulation (PC-N) were tested at laboratory scale compared in terms their efficiency removal organic matter color, current energetic parameter, operating cost environmental sustainability using life cycle analysis conducted large-scale virtual reactors. The three systems complied standards (color > 87%, COD < 400 mg/L, among others) requiring electrolysis times: ECP-N (52 min) PC-N (120 EF-N (160 min); energy consumptions: (2.27 kWh/m3) (4.28 (33.2 kWh/m3); operational costs: (2.63 USD/m3) (6.65 (6.98 USD/m3); others. Electricity (for EF-N) reagents PC-N) found as main hotspots. presented lowest carbon footprint 10.3 kg CO2-Eq/FU (<PC-N (26.3 CO2-Eq/FU) (38.0 CO2-Eq/FU), had lower incidence all impact categories analyzed (ReCiPe-2016 midpoint level) can be considered technically, economically environmentally sustainable applications.

Language: Английский