Exothermic Reaction in the Cleaning of Wastewater by a Fe 2 O 3 /Coconut Shell Activated Carbon/H 2 O 2 Heterogeneous Fenton-like System

Ke Zhang and Yuntao Yan ()
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Ke Zhang: Engineering Training Center, Shandong University, No. 27, South Shanda Road, Jinan 250100, China
Yuntao Yan: Engineering Training Center, Shandong University, No. 27, South Shanda Road, Jinan 250100, China

Sustainability, 2024, vol. 16, issue 4, 1-14

Abstract: Energy utilization in wastewater degradation has important implications for sustainability; however, efficient multiphase Fenton-like catalysts are still needed. In this study, a heterogeneous Fe 2 O 3 /coconut shell activated carbon (CSAC) Fenton-like catalyst was prepared and evaluated with respect to degradation performance and exothermic reaction for the treatment of organic wastewater. Fe 2 O 3 @CSAC retained the porous morphology of CSAS, and Fe 2 O 3 was uniformly loaded on the surface of CSAS. In the reaction system, the degradation rate of wastewater was higher and a large amount of heat was released; therefore, it could be applied to the energy recovery from wastewater source heat pump technology. The degradation rate of 300 mL of o -phenylenediamine solution with a concentration of 0.04 mol·L −1 was 89.0% under 0.25 mol·L −1 H 2 O 2 , 532 g·L −1 Fe 2 O 3 @CSAC, pH 7.1, and an initial reaction temperature of 30 °C, elevated to 7.9 °C. These findings clearly demonstrate the degradation performance and exothermic laws of the Fe 2 O 3 @CSAC/H 2 O 2 multiphase Fenton-like system.

Keywords: Fe 2 O 3 @CSAC; heterogeneous Fenton-like; energy recovery; wastewater degradation; catalyst (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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