摘要
采用模拟含Cu2+废水,以阴离子表面活性剂SDS和SDBS胶团强化超滤分离Cu2+(Cu2+固定为0.6 mmol/L),通过对渗透通量、渗透浓度、去除率、富集率的比较,从而得出SDS、SDBS分离效果的优劣.结果表明,添加SDS的渗透通量始终高于SDBS[其中SDS平均渗透通量为29.92 L.(m2.h)-1,而SDBS只有16.55 L.(m2.h)-1],渗透浓度始终低于SDBS,当渗透液Cu2+浓度接近为0时,SDBS、SDS所需浓度分别为2 mmol/L和6 mmol/L.SDS的Cu2+去除率和平均富集率高于SDBS(SDS平均去除率为85.06%,平均富集率为4.18;SDBS对应值分别为69.05%,4.05).此外,SDS自身的平均富集率也高于SDBS(SDS为3.89,SDBS为3.13).由此可见,SDS比SDBS更适合去除Cu2+.
Micellar-enhanced ultrafiltration was used to remove Cu^2＋（Cu^2＋ was fixed at 0.6 mmol/L） from simulant aqueous solutions with SDS and SDBS as anionic surfactants respectively.Compare SDS and SDBS separation through permeate flux,permeate concentration,rejection and enrichment ratio.Experimental results show that the average permeate flux with SDS is always higher than that with SDBS [the average flux with SDS is 29.92 L·（m^2·h）^-1,while that with SDBS is only 16.55 L·（m^2·h）^-1 ],the permeate concentration of SDS is always lower than that with SDBS.When the permeate concentration of Cu^2＋ close to zero,2 mmol/L and 6 mmol/L of SDBS and SDS are respectively required.Cu^2＋ rejection and enrichment ratio with SDS are always higher than those with SDBS（the average Cu^2＋ rejection and enrichment ratio with SDS are respectively 85.06% and 4.18,while those with SDBS are 69.05% and 4.05 respectively）.Besides,the average enrichment ratio of SDS is also higher than that of SDBS（SDS is up to 3.89,while SDBS is 3.13）.Therefore,SDS is more suitable than the SDBS for removal of Cu^2＋.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2010年第12期2950-2955,共6页
Environmental Science
基金
长江学者和创新团队发展计划项目(IRT0719)
国家自然科学基金项目(50608028)
教育部新世纪优秀人才支持计划项目(NECT-08)
国家水体污染控制与治理科技重大专项(2009ZX07212-001-02)
