首页|Factorial design,physical studies and rapid arsenic adsorption using newly prepared polymer modified perlite adsorbent
Factorial design,physical studies and rapid arsenic adsorption using newly prepared polymer modified perlite adsorbent
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
In this work,expanded perlite(EP)was modified with a polymer of trimesoyl chloride and phenylenediamine,and evaluated as a novel competent adsorbent for aquatic arsenic(As(III))removal.The chemical structure and morphology of the developed polymer-modified EP(PM-EP)adsorbent were investigated by Fourier transform infrared spectroscopy,as well as scanning electron microscope/energy equipped with dispersive X-ray spectroscope.The conditions of batch removal such as the solution pH,contact time,sorbent dosage,and initial As(III)concentration were analyzed by factorial design.Based on the non-linear and linear Langmuir model that well correlates equilibrium data,the removal capacity of the produced PM-EP adsorbent was estimated as 447.9 mg g~(-1)and 454.5 mg g~(-1),respectively at optimized conditions(pH: 6; contact time: 60 min; adsorbent dosage: 10 g L~(-1)and temperature: 24 ℃).The As(III)adsorption mechanism onto PM-EP adsorbent was well described by the non-linear pseudo-second-order kinetic model.The prepared PM-EP adsorbent was subjected to a ten cycling-adsorption/desorption test and the results demonstrated that it had appreciated reuse performance until seven cycles.The removal efficiency of PM-EP was determined in the case of wastewater samples.The overall evaluation suggested that the synthesized PM-EP adsorbent could be a powerful alternative adsorbent for decontamination of As(III)ions from wastewaters and drinking waters.
NSTL
