Open AccessH2O2: From Sustainable Synthesis to Fenton Assisted Environmental Application of Wastewater Treatment
Author(s) -
Peiyuan Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/4/042064
Subject(s) - environmentally friendly , hydrogen peroxide , catalysis , photocatalysis , degradation (telecommunications) , sewage treatment , electrosynthesis , wastewater , chemistry , autoxidation , advanced oxidation process , process engineering , homogeneous , heterogeneous catalysis , biochemical engineering , water treatment , environmental science , computer science , organic chemistry , environmental engineering , electrochemistry , engineering , electrode , mathematics , ecology , telecommunications , combinatorics , biology
Hydrogen peroxide (H 2 O 2 ) has great application prospects in the wastewater treatment environmental field due to its clean degradation product of merely H 2 O. While the green synthesis and highly efficient purification are also challengeable but significant. Thus, we intended to overview the H 2 O 2 preparation methods, which are environmentally friendly, producing efficiently and economically. Here, we first discussed the most widely used H 2 O 2 producing method of anthraquinone autoxidation synthesis method and put forward the main drawback. Six ideal substitute methods were next put forward which are oxidation of alcohols, photocatalysis, synthesis from CO/O 2 /H 2 O mixtures, direct synthesis method, fuel cell method, and direct electrosynthesis method. We then analyzed the traditional homogeneous Fenton process and summarized the promising substitute application of H 2 O 2 in water treatment through heterogeneous Fenton processes from three main points. They are advanced heterogeneous iron oxychloride, heterogeneous electro Fenton catalytic assistance, and heterogeneous photo-Fenton catalytic assistance. Finally, a new sequential process of H 2 O 2 applied in the environment as a form of water treatment was envisaged and named as One-stop Sequential H 2 O 2 Process combining each way from the source and terminal. Additionally, in all the methods mentioned, we restated mechanisms and redrawn them more concisely and clearly to make them easier to understand.