Sulfamic acid functionalized slag for effective removal of organic dye and toxic metal from the aqueous samples

作     者：Dauda Mohammed Muhammad HAl-Malack Basheer Chanbasha Dauda Mohammed;Muhammad H.Al-Malack;Basheer Chanbasha

作者机构：Department of Civil and Environmental EngineeringKing Fahd University of Petroleum&MineralsDhahran 31261Saudi Arabia Department of ChemistryKing Fahd University of Petroleum&MineralsDhahran 31262Saudi Arabia 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第5期

页      面：306-318页

核心收录：

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] 

基　　金：King Fahd University of Petroleum & Minerals (Dhahran, Saudi Arabia) for the technical and financial support provided the Deanship of Scientific Research for the financial support through the project No: DF181034 

主　　题：Functional groups Optimization Zwitterion Adsorption Waste treatment Industrial waste 

摘      要：Surface functionalization of blast furnace slag with sulfamic acid(a zwitterion)was performed for the removal of Cr^(3+)and methylene blue dye(MB)from water *** slag functionalization process was optimized using Response Surface Methodology *** analysis of the parameters that include the sulfamic acid amount(A),reaction time(B),and temperature(C)revealed that(A)increase had a negative effect on the adsorption of both pollutants by the zwitterion slag,whereas(B)and(C)increase presented a positive *** the optimum condition of 2 g sulfamic acid amount,50 min reaction time and 37℃ temperature,the prepared slag showed a removal efficiency of more than 90% for both Cr^(3+)and *** characterization by SEM/EDS,FTIR,XPS and surface area analyser,showed an improvement in surface properties and the incorporation of zwitterionic NH^(2+)and S=O groups of sulfamic *** isotherm and kinetic studies conducted with the zwitterion slag showed the adsorption process was suited to Freundlich isotherm model and pseudo-second-order kinetic *** thermodynamic study conducted revealed the spontaneity of the process based on the calculated negativeΔG(Gibb’s free energy)*** prepared zwitterion slag offered easy regeneration with dilute HCl solution and showed a considerable removal(Cr^(3+):65% and MB:80%)for both pollutants even after 3 cycles of usage.