Selective separation of cations of different valence during electrodialysis of electrolytic manganese wastewater
HE Fei-yang, XIANG Wen-yu, CHEN Shu-qi, HU Xiao-yu, HAN Le
Key Laboratory of Eco-environment of Three Gorges Reservoir Area, Ministry of Education, College of Environment and Ecology, Chongqing University, 400045, China
Abstract：Towards cleaner production and resource utilization in electrolytic manganese industry, this work investigated the influence of monovalent selective cation exchange membrane (CSO) on separation of Mn2+, NH4+ and Mg2+ via electrodialysis (ED). PNH4+Mn2+ was found far less than 1, in line with the fact that CSO membrane realized the facile separation of NH4+ and Mn2+, maintained a much higher migration amount of NH4+ than its counterpart during the desalination period. Due to the difference of ion diffusivity in the boundary layer, the perm-selectivity of Mn2+ over NH4+decreased with the increase of current density and total ion concentration, with the former factor more significant. In the Mn2+, NH4+ and Mg2+ tertiary system, the order of sequence for the migration rate was NH4+> Mn2+> Mg2+, in consistence with the level of their corresponding ion hydration energy. Furthermore, the voltage variation which exhibted an S-shaped could be used to evaluate the migration extent of monovalent during ED process.
何飞阳, 向文毓, 陈舒琦, 胡晓宇, 韩乐. 电渗析选择性分离电解锰废水中的阳离子[J]. 中国环境科学, 2022, 42(3): 1202-1208.
HE Fei-yang, XIANG Wen-yu, CHEN Shu-qi, HU Xiao-yu, HAN Le. Selective separation of cations of different valence during electrodialysis of electrolytic manganese wastewater. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(3): 1202-1208.
Shu J, Wu H, Chen M, et al.Fractional removal of manganese and ammonia nitrogen from electrolytic metal manganese residue leachate using carbonate and struvite precipitation[J].Water Research, 2019, 153:229-238.
[2]
高小娟.电解锰生产废水全过程控制技术研究[D].北京:中国环境科学研究院, 2012.Gao X.Study on the whole process control of EMM wastewater technology[D].Beijing:Chineses Research Academy of Environment Sciences.
[3]
何家欢.电解锰生产的环境污染及我国相关环境政策的研究[J].环境与发展, 2020,32(5):65-66.He J.Research on environmental pollution of electrolytic manganese production and related environmental policies in China[J].Environment and Development, 2020,32(5):65-66.
[4]
何强,王韧超,柴宏祥,等.化学沉淀/混凝沉淀工艺序批式处理电解锰废水[J].中国给水排水, 2007,23(10):62-64.He Q, Wang R, Chai H, et al.Study on chemical precipitation/coagulation sedimentation process for sequencing batch treatment of electrolytic manganese wastewater[J].China Water& Wastewater, 2007,23(10):63-64.
[5]
Shu J, Wu Y, Deng Y, et al.Enhanced removal of Mn2+ and NH4+-N in electrolytic manganese metal residue using washing and electrolytic oxidation[J].Separation and Purification Technology, 2021,270:118798.
[6]
Wang N, Fang Z, Peng S, et al.Recovery of soluble manganese from electrolyte manganese residue using a combination of ammonia and CO2[J].Hydrometallurgy, 2016,164:288-294.
[7]
汪启年,王璠,于宏兵.电解锰高浓度氨氮废水回用实验研究[J].环境工程, 2013,31(1):5-8.Wang Q, Wang F, Yu H.Experimental study on treatment and reuse of high concentration ammonia nitrogen wastewater from electrolytic manganese[J].Environmental Engineering, 2013,31(1):5-8.
[8]
Alzahrani S, Mohammad A W.Challenges and trends in membrane technology implementation for produced water treatment:A review[J].Journal of Water Process Engineering, 2014,4:107-133.
[9]
Shah S R, Wright N C, Nepsky P A, et al.Cost-optimal design of a batch electrodialysis system for domestic desalination of brackish groundwater[J].Desalination, 2018,443:198-211.
[10]
Yvana D, Ahdab, Danyal Rehman, et al.Brackish water desalination for greenhouses:Improving groundwater quality for irrigation using monovalent selective electrodialysis reversal[J].Journal of Membrane Science, 2020,610:118072.
[11]
Saracco G.Transport properties of monovalent-ion-permselective membranes[J].Chemical Engineer Science, 1997,52(17):3019-3031.
[12]
Xu X, He Q, Ma G, et al.Selective separation of mono-and di-valent cations in electrodialysis during brackish water desalination:Bench and pilot-scale studies[J].Desalination, 2018,428:146-160.
[13]
Dong T, Yao J, Wang Y, et al.On the permselectivity of di-and mono-valent cations:Influence of applied current density and ionic species concentration[J].Desalination, 2020,488:114521.
[14]
Cohen B, Lazarovitch N, Gilron J.Upgrading groundwater for irrigation using monovalent selective electrodialysis[J].Desalination, 2018,431:126-139.
[15]
Kim Y, Walker W S, Lawler D F.Competitive separation of di-vs.mono-valent cations in electrodialysis:Effects of the boundary layer properties[J].Water Research, 2012,46(7):2042-2056.
[16]
Han L, Galier S, Roux-de Balmann H.Ion hydration number and electro-osmosis during electrodialysis of mixed salt solution[J].Desalination, 2015,373:38-46.
[17]
Luo T, Abdu S, Wessling M.Selectivity of ion exchange membranes:A review[J].Journal of Membrane Science, 2018,555:429-454.
[18]
Luo T, Roghmans F, Wessling M.Ion mobility and partition determine the counter-ion selectivity of ion exchange membranes[J].Journal of Membrane Science, 2020,597:117645.
[19]
Saracco G.Transport properties of monovalent-ion-permselective membranes[J].Chemical Engineer Science, 1997,52(17):3019-3031.
[20]
Kingsbury R S, Coronell O.Modeling and validation of concentration dependence of ion exchange membrane permselectivity:Significance of convection and Manning's counter-ion condensation theory[J].Journal of Membrane Science, 2021,620:118411.
[21]
Epsztein R, Shaulsky E, Qin M, et al Activation behavior for ion permeation in ion-exchange membranes:Role of ion dehydration in selective transport[J].Journal of Membrane Science, 2019,580:316-326.
[22]
Marcus Y.Thermodynamics of solvation of ions.Part 5.-Gibbs free energy of hydration at 298.15K[J].J.Chem.Soc.Faraday Trans., 1991,87(18):2995-2999.
