High-efficiency hydrogen sulfide removal using copper (II) nitrate-impregnated ZSM-5 derived from sugarcane bagasse ash

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-28 DOI:10.1016/j.colsurfa.2025.136749

Napassorn Chanka , Pooripong Somchuea , Metta Chareonpanich , Chularat Wattanakit , Kajornsak Faungnawakij , Günther Rupprechter , Anusorn Seubsai

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引用次数: 0

Abstract

Sugarcane bagasse ash (SCBA) was utilized as an alternative silica source to synthesize a ZSM-5 support (SC-ZSM-5), which was subsequently impregnated with copper (II) nitrate (CuN) to create an alternative adsorbent for hydrogen sulfide (H₂S) removal. We investigated the effects of varying CuN loading levels, inlet gas components (CO₂ and moisture), and H₂S adsorption temperatures on the adsorption capacity. Our findings revealed that copper (II) nitrate and copper (II) hydroxy nitrate were the primary phases present in the CuN/SC-ZSM-5 samples. After H₂S removal, the CuN/SC-ZSM-5 sample was primarily composed of the presence of copper (I) disulfide, copper (II) sulfide, and copper (II) sulfate phases, with NO_x released as a by-product. Higher adsorption temperatures enhanced the H₂S breakthrough capacity and NO_x emissions, which can negatively impact air quality. Additionally, presence of CO₂ and moisture levels influenced H₂S removal performance. Upon regeneration at 600 ºC, the material decomposed into copper oxides, which remained active for further H₂S removal, demonstrating dual functionality in both adsorption and regeneration. This research not only transforms sugar industry waste into a valuable material but also enhances adsorption capacity, cost-effectiveness, eco-friendliness, and reusability for industrial gas purification, contributing to cleaner air and greener technologies.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.