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1、AdvancesinEnvironmentalProtection环境保护前沿,2016,6(6),117-129PublishedOnlineDecember2016inHans.http://www.hanspub.org/journal/aephttp://dx.doi.org/10.12677/aep.2016.66016RemovalofCadmiumIonsfromtheCitricAcidSolutionUsingGarlicWasteLipuYin,KaiHuang*SchoolofMetallurgicalandEcologicalEngineerin
2、g,UniversityofScienceandTechnologyBeijing,BeijingthrdthReceived:Nov.15,2016;accepted:Dec.3,2016;published:Dec.6,2016Copyright©2016byauthorsandHansPublishersInc.ThisworkislicensedundertheCreativeCommonsAttributionInternationalLicense(CCBY).http://creativecommons.org/licenses/by/4.0/OpenAc
3、cessAbstractCitricacid,asanecofriendlyreagent,canbeusedtowashthesoilpollutedbyheavymetalionsef-fectively,anditisalsoconcernedinthefieldofsoilremediation.Buthowtoremoveheavymetalionseffectivelyintheleacheateandmakethecitricacidsolutionberecycledandreusedforsoilwashing,israthercriticalinth
4、esoilwashingprocess.Thepresentstudyproposedamethodofbiosorption,whichisusedtoremoveCd2+inthesoilwashedwastewater.Itusessaponifiedgarlicpeel(GP)gelastheadsorbenttoremoveCd2+intheartificialcitricsolution.TheparameterswereevaluatedsystematicallyincludingpH,reactiontime,adsorbentdosage,citri
5、cconcentration,coexistingions,temperatureandshakingspeed,etc.Resultsshowthatadsorptionreachesequili-briumwithin60minutes,andwhenpHis4,adsorptionefficiencyishighest.Withtheincreaseofadsorpbentdosage,adsorptionefficiencywasimprovedsignificantly,andtheparametersinclud-ingcoexistingionstempe
6、ratureandshakingspeedhavenosignificanteffect.Inaddition,afterseveraloperationsofadsorptionanddesorption,garlicpeelgelstillcanremoveCd2+effectively.KeywordsSoilWashing,CitricAcid,Biosorption,GarlicPeelGel,RecyclingofWashingEffluent大蒜废弃物吸附柠檬酸淋洗液中镉离子的研究*尹立普，黄凯北京科技大学冶金与生态工程学院，北京*通讯作者。文章引用:尹立
7、普,黄凯.大蒜废弃物吸附柠檬酸淋洗液中镉离子的研究[J].环境保护前沿,2016,6(6):117-129.http://dx.doi.org/10.12677/aep.2016.66016尹立普，黄凯收稿日期：2016年11月15日；录用日期：2016年12月3日；发布日期：2016年12月6日摘要柠檬酸试剂对复合重金属污染土壤具有良好的洗脱效果，兼之对环境友好等优点而在土壤修复领域备受关注。如何高效经济地脱除淋洗液中的重金属离子，实现柠檬酸淋洗液的循环使用，是土壤淋洗技术实用化过程中非常关键的问题。本文提出生物吸附的方法，来实现对柠檬
