扩散渗析法回收高砷污酸中的硫酸
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摘要
在实验室条件下,考察分析了静态扩散渗析中砷(Ⅲ)和硫酸的扩散渗析现象及通量、砷(Ⅲ)与硫酸之间的相互影响关系。结果表明,在3%～15%硫酸和1～3g/L砷(Ⅲ)的浓度范围内,砷(Ⅲ)显示为定量扩散的特征,硫酸浓度对实验结果影响较k·CAs·V/S砷(Ⅲ)泄漏;硫酸渗析系数随砷(Ⅲ)浓度增加而减少约5%～25%。综合实验数据,在24h静态扩散渗析基本稳定时,硫酸的平均回收率约50%,砷(Ⅲ)的平均泄漏率低于15%,可为实际工业提供指导借鉴。
This paper mainly investigates the diffusion dialysis and flux of arsenic(Ⅲ)and sulfuric acid in static diffusion dialysis and the interaction between arsenic(Ⅲ)and sulfuric acid,and provides guidance parameters for the actual industry.The results show that arsenic(Ⅲ)shows quantitative diffusion characteristics in the concentration range of 3%to 15%sulfuric acid and 1-3 g/L arsenic(Ⅲ).The concentration of sulfuric acid has little effect on the experimental results.The increase in arsenic(Ⅲ)flux is basically consistent with the increase of initial arsenic(Ⅲ)concentration,and the correlation formula is established.This parameter can be used to estimate arsenic(Ⅲ)leakage.The sulfuric acid dialysis leaching coefficient decreases with the increase of arsenic(Ⅲ)concentration about5%—23%.Based on the experimental data,the average recovery of sulfuric acid is about 50% and the average leakage rate of arsenic(Ⅲ)is basically stable less than 15% in 24 hours.The diffusion dialysis method for recovering sulfuric acid from high arsenic acid has a good guidance for practical industries.
This paper mainly investigates the diffusion dialysis and flux of arsenic(Ⅲ)and sulfuric acid in static diffusion dialysis and the interaction between arsenic(Ⅲ)and sulfuric acid,and provides guidance parameters for the actual industry.The results show that arsenic(Ⅲ)shows quantitative diffusion characteristics in the concentration range of 3%to 15%sulfuric acid and 1-3 g/L arsenic(Ⅲ).The concentration of sulfuric acid has little effect on the experimental results.The increase in arsenic(Ⅲ)flux is basically consistent with the increase of initial arsenic(Ⅲ)concentration,and the correlation formula is established.This parameter can be used to estimate arsenic(Ⅲ)leakage.The sulfuric acid dialysis leaching coefficient decreases with the increase of arsenic(Ⅲ)concentration about5%—23%.Based on the experimental data,the average recovery of sulfuric acid is about 50% and the average leakage rate of arsenic(Ⅲ)is basically stable less than 15% in 24 hours.The diffusion dialysis method for recovering sulfuric acid from high arsenic acid has a good guidance for practical industries.
引文
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[16]赵宜江,邢卫红,徐南平.扩散渗析法从钛白废酸中回收硫酸[J].高校化学工程学报,2002,16(2):217-220.ZHAO Yijiang,XING Weihong,XU Nanping.Recovery of sulfuric acid from titanium white waste acid by diffusion dialysis[J].Journal of Chemical Engineering of Chinese Universities,2002,16(2):217-220.
[2]尹一男,王海北,赵磊.污酸中砷的分布稳定化研究[J].有色金属工程,2017,7(5):54-59.YI Yinan,WANG Haibei,ZHAO Lei.Study on stabilization by step for arsenic in waste acid[J].Journal of Nonferrous Metals Engineering,2017,7(5):54-59.
[3]邵立南,杨晓松.有色金属冶炼污酸处理技术现状及发展趋势[J].有色金属工程,2013,3(5):59-60.SHAO Linan,YANG Xiaosong.Current situation and development trend of nonferrous metal smelting sewage treatment technology[J].Journal of Nonferrous Metals Engineering,2013,3(5):59-60.
[4]李庆超,应国民,詹中华,等.铜冶炼污酸除砷工艺比较研究[J].化学工程,2017,45(4):10-14.LI Qianchao,YING Guoming,ZHANG Zhonghua,et al.Comparation on treatment of arsenic wasteacid in copper metallurgy[J].Journal of Chemical Engineering(China).2017,45(4):10-14.
[5]侯晓川,肖连生,高丛堦,等.扩散渗析技术在湿法冶金工业上的应用现状及展望[J].有色金属工程,2011,1(3):9-13.HOU Xiaochuan,XIAO Liansheng,GAO Congjie,et al.Application and prospect of diffusion dialysis technology in hydrometallurgy industry[J].Journal of Nonferrous Metals Engineering,2011,1(3):9-13.
[6]王刚,徐敬生,孙平,等.扩散渗析法及其在工业废液处理中的应用[J].离子交换与吸附,2015,3(16):569-576.WANG Gang,XU Jingsheng,Sun Ping,et al.Principle of diffusion dialysis method and its application in treatment of wastewater of electroplating industry[J].Journal of Ion Exchange and Adsorption,2015,3(16):569-576.
[7]雷军鹏,郑军福,卫媛,等.扩散渗析法对镍电积阳极液酸盐分离应用研究[J].有色金属工程,2017,7(5):40-42.LEI Junpeng,ZHENG Junfu,WEI Yuan,et al.Experimental study on separation of acid and salt for nickel anodic electrolyte by diffusion dialysis equipment[J].Journal of Nonferrous Metals Engineering,2017,7(5):40-42.
[8]ZDENěK P,BENDOVáH.Continuous dialysis of sulphuric acid and magnesium sulphate[J].Separation and Purification Technology,2011,76(3):152-156.
[9]ISSAN N B,VLADANA N,ALEKSANDAR D,et al.Separation and determination of arsenic species in water by selective exchange and hybrid resins[J].Analytica Chimica Acta,2011,706(1):191-198.
[10]VELIZAROV S.Transport of arsenate through anionexchange membranes in Donnan dialysis[J].Journal of memberane science,2013,425:243-250.
[11]LOPES M P,CRESPO J G,VELIZAROV S,et al.Arsenate removal from sulphate-containing water streamsby an ion-exchange membrane process[J].Separation and Purification Technology,2016,166:125-134.
[12]GüELL R,FONTàS C,ANTICóE,et al.Transport and separation of arsenate and arsenite from aqueous media by supported liquid and anion-exchange membranes[J].Separation and Purification Technology,2011,80(3):428-434.
[13]张旭.扩散渗析的理论与应用研究[D].合肥:中国科学技术大学,2014:67-68.ZHANG Xu.Theoretical and applied research on diffusion dialysis[D].Hefei:University of Science and Technology of China,2014:67-68.
[14]周柏清.HCl和FeCl2在阴离子交换膜中扩散速度的测定[J].水处理技术,1998,24(1):30-34.ZHOU Baiqing.Determination of the diffusion velocity of HCl and FeCl2 in anion exchange membrane[J].Journal of Technology of Water Treatment,1998,24(1):30-34.
[15]黄子卿.电解质溶液理论导论[M].北京:科学出版社,1983.HUANG Ziqing.Introduction to the theory of electrolyte solution[M].Beijing:Science Press,1983.
[16]赵宜江,邢卫红,徐南平.扩散渗析法从钛白废酸中回收硫酸[J].高校化学工程学报,2002,16(2):217-220.ZHAO Yijiang,XING Weihong,XU Nanping.Recovery of sulfuric acid from titanium white waste acid by diffusion dialysis[J].Journal of Chemical Engineering of Chinese Universities,2002,16(2):217-220.