摘要
为了评价高砷锑烟尘对环境的影响,模拟酸雨、淡水、盐碱地等自然环境,采用去离子水、硫酸-硝酸混合溶液、醋酸缓冲溶液、Na OH溶液(pH=10、pH=11、pH=13) 6种浸出剂测定了As、Sb的浸出毒性。结果表明,浸出温度20℃时,在去离子水、硫酸-硝酸、醋酸和Na OH体系中As最低浓度分别为1.66、1.62、0.82和1.59 g/L,最高浓度分别为2.13、2.11、1.13和2.77 g/L; Sb最低浓度分别为2.65、2.36、0.41和0.53 g/L,最高浓度分别为2.96、2.68、0.72和2.98 g/L。随着浸出温度升高,浸出液中As、Sb浓度更大。
Leaching toxicity of As and Sb was respectively measured using 6 leaching agents, including deionized water, sulturie acid-nitric acid solution, acetic acid solution, NaOH solution （pH = 10, pH = 11, pH = 13）, by simulating natural environmental condition, including acid rain, fresh water and saline alkali land, so as to evaluate impact of high arsenic antimony bearing dust on environment. Results showed that alter leaching at 20 ℃, in deionized water system, sulturie-nitrie acid system, acetic acid system and sodium hydroxide system, the lowest concentration of As was 1.66, 1.62, 0.82 and 1.59 g/L, respectively, while the highest eoneentra6on was 2.13, 2.11, 1.13 and 2.77 g/L, respectively. While the lowest concentration of Sb was 2.65, 2.36, 0.41 and 0.53 g/L, respectively, and the highest concentration was 2.96, 2.68, 0.72 and 2.98 g/L, respectively. It is shown that both the concentrations of As and Sb in the lixivium are increased with the rising of temperature.
作者
周亚明
刘智勇
刘志宏
ZHOU Ya-ming;LIU Zhi-yong;LIU Zhi-hong(School of Metallurgy and Environment,Central South University,Changsha 410083,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2018年第5期107-110,共4页
Mining and Metallurgical Engineering
基金
湖南省自然科学基金株洲联合基金(2016JJ5032)
中南大学研究生自主探索创新项目(2016zzts278)
关键词
高砷锑烟尘
浸出毒性
砷
锑
浸出剂
arsenic antimony bearing dust
leaching toxicity
arsenic
antimony
leaching agent
