Environmental Science and Pollution Research Pub Date : 2021-09-21 , DOI: 10.1007/s11356-021-16556-w Kingsley Igenepo John 1, 2 , Aderemi Timothy Adeleye 3, 4 , Comfort Abidemi Adeyanju 5 , Samuel Ogunniyi 5 , Joshua O Ighalo 5, 6 , Adewale George Adeniyi 5
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It is important that a pollution remediation system be able to cater for a variety of pollutant species present in the water to be treated. The aim of this study was to utilise a series of commercial zeolites (H-MOR, H-β, and H-ZSM5) for the concomitant adsorption and photodegradation of Cu2+ and tetracycline (TC) molecules. The adsorbent cum photocatalyst was characterised by SEM and FTIR. FTIR confirmed the key functional groups (Si-O-Si and Al-O-Si) in the series of zeolites, and H-β zeolite was demonstrated to be the most effective adsorbent cum photocatalyst for both adsorption and photodegradation of Cu2+ and TC molecules. These results were further corroborated from the pseudo-first-order rate constant values. Among the investigated zeolites, H-ZSM5 displayed the least adsorption and photodegradation performance for Cu2+ and TC molecules. The photolysis reaction confirms the significant role of zeolites in the photodegradation test, as low performance was recorded in the absence of the zeolites.
Graphical abstract
中文翻译：
光对 H-MOR/H-β/H-ZSM5 沸石同时螯合 Cu(II) 和光降解四环素的影响
重要的是，污染修复系统能够适应待处理水中存在的各种污染物种类。本研究的目的是利用一系列商用沸石（H-MOR、H-β 和 H-ZSM5）对 Cu 2+ 和四环素 ( TC ) 分子进行伴随吸附和光降解。吸附剂兼光催化剂通过 SEM 和 FTIR 进行了表征。FTIR确定了系列沸石中的关键官能团（Si-O-Si和Al-O-Si），H-β沸石被证明是吸附和光降解Cu 2+最有效的吸附剂和光催化剂和 TC 分子。伪一级速率常数值进一步证实了这些结果。在所研究的沸石中，H-ZSM5 对 Cu 2+和 TC 分子的吸附和光降解性能最低。光解反应证实了沸石在光降解试验中的重要作用，因为在没有沸石的情况下性能很低。
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