###
DOI:
有色金属工程:2024,(5)
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
热活化过硫酸盐降解典型选矿药剂苯甲羟肟酸的研究
王健行, 张青青, 曾亦婷, 谢心怡, 王赵鹏, 王春英
(江西省矿冶环境污染控制重点实验室江西理工大学)
Study on degradation of typical mineral processing agent benzohydroxamic acid by heat-activated persulfate
Wang Jianxing, Zhang Qingqing, Zeng Yiting, Xie Xinyi, Wang Zhaopeng, Wang Chunying
(Laboratory of Environmental Pollution Control in Mining and Metallurgy of Jiangxi Province (Jiangxi University of Science and Technology))
摘要
图/表
参考文献
相似文献
本文已被:浏览 275次   下载 130
投稿时间:2023-11-25    修订日期:2024-01-19
中文摘要: 采用热活化过硫酸钾(PS)降解典型选矿药剂苯甲羟肟酸(BHA),考察不同温度、PS浓度、BHA浓度、pH及阴阳离子等条件对BHA降解效果的影响,分析降解产物及体系活性物种以明确体系降解机理,并通过绿豆芽发芽试验验证降解体系毒性变化。实验结果表明:PS浓度越高,温度越高降解效果越好,在70°C及1.5 mmol/L PS的条件下,反应120 min后,20 mg/L BHA的降解率达91.34%;强酸性和强碱性条件均能促进BHA的降解;HCO3-SiO32-Cu2+促进了BHA的去除;降解过程以SO4.-氧化为主.热活化PS降解BHA的主要中间产物为苯甲酸和羟胺,且Cu2+的存在促进了羟胺到气态氮的转化。绿豆发芽试验证明经降解后的反应体系毒性较原始溶液明显下降。
Abstract:A typical mineral processing agent benzohydroxamic acid (BHA) was degraded by thermal activated potassium persulfate (PS). The effects of temperature, PS concentration, BHA concentration, pH and anions on the degradation effect of BHA were investigated. The reaction mechanism of the degradation system was investigated by the quenching experiments of ethanol and tert-Butyl Alcohol. The degradation mechanism was determined by analyzing the degradation products and the active species of the system, and the toxicity of the degradation system was verified by the germination experiment of mung bean. The results showed that the higher the concentration of PS and the higher the temperature, the better the degradation effect. Under the condition of 70 °C and 1.5 mmol/L of PS, the removal rate of 20 mg/L BHA reached 91.34% in 120min. The degradation of BHA was promoted by both strong acidic and alkaline conditions. HCO3-, SiO32-, and Cu2+ were beneficial to the removal of BHA. SO4.- played an important role in the degradation of BHA during the thermally-activated PS system. The main products of BHA were benzoic acid and hydroxylamine, and the adding of Cu2+ promoted the transformation of hydroxylamine to gaseous nitrogen. The mung bean germination test showed that the toxicity of the beneficiation wastewater after treatment was significantly lower than that of the original solution.
文章编号:YSJSGC20230680     中图分类号:X703    文献标志码:
基金项目:国家重点研发计划(2019YFC1805100);江西理工大学清江青年英才支持计划项目(JXUSTJYX2016003);江西省自然科学基金面上项目(20232BAB203040)
引用文本:
王健行,张青青,曾亦婷,谢心怡,王赵鹏,王春英.热活化过硫酸盐降解典型选矿药剂苯甲羟肟酸的研究[J].有色金属工程,2024,(5):.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299224

杂志信息

期刊简介

相关下载

联系我们

电话:86-10-63299224/63299153

传真:010-63299754

Email:ysjsgc@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地十八区23号楼

关注微信公众号