铁碳微电解填料制备及其降解黄药研究

微电解是一种有效、廉价、绿色的工业废水预处理技术。本研究以铁、碳、粘结剂、造孔剂为原料优化设计制备出了微电解填料，并考察了其用于降解去除异丁基黄药的效果，重点研究了反应时间、填料用量和模拟废水初始pH值对微电解降解异丁基黄药的影响，并用GC-MS测定异丁基黄药降解后产物。结果表明，填料最佳制备条件为:m（Fe）/m（C）=1 GA6FA 1、粘结剂含量为20%、造孔剂含量为3%、煅烧温度为900 ℃、煅烧时间为2.5 h。微电解降解异丁基黄药最佳条件为:模拟废水初始pH=7、反应时间为90 min、填料用量为500 g/L，在此条件下溶液中异丁基黄药、COD、和TOC最终降解率分别为89.91%、79.91%、和35.87%。微电解降解异丁基黄药的最终产物是CO₂、H₂O和SO₄2-。微电解可以用于净化降解选矿废水残留药剂。 

Preparation of Iron-carbon Micro-electrolytic Filler and Its Application for Degradation of Xanthate

Micro-electrolysis is an effective, inexpensive, green industrial wastewater pretreatment technology. In this study, micro-electrolytic fillers were prepared by using iron, carbon, binder and pore-forming agent as raw materials, and the effects of degrading and removing isobutyl xanthate were investigated. The reaction time, filler amount, and the effect of initial pH of simulated wastewater were mainly studied on the micro-electrolysis degradation of isobutyl xanthate, the product after degradation of isobutyl xanthate were determined by GC-MS. The results show that the optimum preparation conditions of the filler are: m(Fe)/m(C)=1 GA6FA 1, binder content 20%, pore former content 3%, calcination temperature 900 ℃ and calcination time 2.5 h. The optimum conditions for micro-electrolysis degradation of isobutyl xanthate are: simulated wastewater initial pH = 7, reaction time is 90 min, and the amount of filler is 500 g/L. Under these conditions, the final degradation rates of isobutyl xanthate, COD, and TOC were 89.91%, 79.91%, and 35.87%, respectively. The final products of micro-electrolytic decomposition of isobutyl xanthate are CO₂, H₂O and SO₄2-. Micro-electrolysis can be used to purify and remove residual xanthate in beneficiation wastewater.