Comparative Study of the Efficacy of Metal Removal from Contaminated Aqueous Solutions by Solid Bidentate Ligands&Liquid Plant Materials

作     者：Lovell Agwaramgbo Talajai Sardin Christopher Alisa 

作者机构：Chemistry DepartmentDillard UniversityNew OrleansLA 70122USA Biology DepartmentDillard UniversityNew OrleansLA 70122USA Chemistry DepartmentFederal University of Technology OwerriPMB 1526OwerriNigeria 

出 版 物：《Journal of Environmental Science and Engineering(A)》 (环境科学与工程（A）)

年 卷 期：2024年第13卷第2期

页      面：45-49页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：Organic acids OA remediation chelation ligands heavy metal contamination 

摘      要：Heavy metal contaminated water sources pose serious health risks for humans,animals,and *** to and ingestion of heavy metals have been associated to liver,kidney,and brain ***:The aim of this research is to comparatively examine the metal removal efficacy of three solid bidentate chemicals and four plant *** Design&Methods:Standard solutions of zinc(II)and lead(II)ions with concentrations of 1,000 ppm were respectively treated with OA(Oxalic Acid),dibasic bidentate ligands(sodium hydrogen phosphate and sodium carbonate).Then,the solutions were placed on a shaker for 15 h,centrifuged,and the supernatant was analyzed using ICP-AES(Inductively Coupled Plasma-Atomic Emission Spectrometry).Results:All the solid bidentate adsorbents were very effective in removing zinc and lead(90%).However,more lead than zinc was removed across all adsorbents except for lemon where equal percent of zinc and lead(49%)were *** and Na2HPO4 removed about equal amount of lead(99%).The plant materials(SP(Spinach),bell pepper and GBP(Green Bell Pepper)),respectively and preferentially removed more lead(98.9%,98.3%,81.5%)than zinc(91.7%,46%,46%).Conclusion:Although plant materials have gained attraction for the remediation of heavy metal,however,some bidentate chemical ligands such as OA,sodium carbonate and sodium hydrogen phosphates are even more effective in removing these metals from contaminated ***,heavier metals are preferentially removed than lighter metals.