Institute of New Energy Chemistry and Environmental Science, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, PR China.
Sci Rep. 2017 Mar 15;7:44683. doi: 10.1038/srep44683.
To match the relentless pursuit of three research hot points - efficient solar utilization, green and sustainable remediation of wastewater and advanced oxidation processes, solar-mediated thermo-electrochemical oxidation of surfactant was proposed and developed for green remediation of surfactant wastewater. The solar thermal electrochemical process (STEP), fully driven with solar energy to electric energy and heat and without an input of other energy, sustainably serves as efficient thermo-electrochemical oxidation of surfactant, exemplified by SDBS, in wastewater with the synergistic production of hydrogen. The electrooxidation-resistant surfactant is thermo-electrochemically oxidized to CO while hydrogen gas is generated by lowing effective oxidation potential and suppressing the oxidation activation energy originated from the combination of thermochemical and electrochemical effect. A clear conclusion on the mechanism of SDBS degradation can be proposed and discussed based on the theoretical analysis of electrochemical potential by quantum chemical method and experimental analysis of the CV, TG, GC, FT-IR, UV-vis, Fluorescence spectra and TOC. The degradation data provide a pilot for the treatment of SDBS wastewater that appears to occur via desulfonation followed by aromatic-ring opening. The solar thermal utilization that can initiate the desulfonation and activation of SDBS becomes one key step in the degradation process.
为了匹配高效太阳能利用、废水的绿色可持续修复和先进氧化过程这三个研究热点，提出并开发了太阳能介导的表面活性剂热电化学氧化，用于绿色修复表面活性剂废水。太阳能热电化学工艺（STEP）完全由太阳能驱动电能和热能，无需其他能源输入，可持续作为表面活性剂（以 SDBS 为例）在废水中的高效热电化学氧化，同时协同产生氢气。通过降低有效氧化电位和抑制源于热化学和电化学效应结合的氧化活化能，将电氧化抗性表面活性剂热电化学氧化为 CO，同时生成氢气。可以通过量子化学方法对电化学势进行理论分析，并通过 CV、TG、GC、FT-IR、UV-vis、荧光光谱和 TOC 的实验分析，提出并讨论 SDBS 降解的机理。降解数据为处理 SDBS 废水提供了一个试点，该废水似乎是通过脱硫和芳环开环的方式进行处理。引发 SDBS 脱硫和活化的太阳能热利用成为降解过程的关键步骤之一。
