改性木质素磺酸盐处理含镉废水的研究_李爱阳
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2020-01-02 22:20:37
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改性木质素磺酸盐处理含镉废水的研究[摘要]用自制的改性木质素磺酸盐处理电镀含镉废水,实验表明:在室温条件下,单体用量为1.5mol/L,反应48h时,可得到相对分子质量较大、絮凝效果较好的改性木质素磺酸盐。当pH控制在7,改性木质素磺酸盐用量80mg/L,絮凝60min,室温条件下,可使含镉废水中Cd2+的去除率达到99%以上。[关键词]电镀废水;镉离子;木质素磺酸盐[中图分类号]X703.1[文献标识码]B[文章编号]1005-829X(2009)11-0028-04李爱阳1,李大森2,李安伍1(1.湖南工学院化工系,湖南衡阳421002;2.长沙远大住宅工业有限公司,湖南长沙410008)Abstract:Thecadmium-containingwastewaterinelectroplatinghasbeentreatedbyflocculationwithakindofhome-madeflocculant.Theresultsshowthatthemodifiedlignosulfonatehavingbiggermolecularandbetterfloc-culationeffectcanbeobtained,whenthemonomerdosageis1.5mol/Landreactiontimeis48h,atroomtem-perature.Usingthemodifiedlignosulfonatefortreatingcadmium-containingwastewater,whenitspHis7,dosageofmodifiedlignosulfonate80mg/L,flocculationtime60minandatroomtemperature,theremovalratesofCd2+fromcadmium-containingwastewaterreachesmorethan99%.Keywords:electroplatingwastewater;cadmiumions;lignosulfonateStudyonthetreatmentofcadmium-containingwastewaterwithmodifiedlignosulfonateLiAiyang1,LiDasen2,LiAnwu1(1.ChemicalEn
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