Optimization of Cr(VI) adsorption by modified sesame hull from aqueous solutions using response surface methodology

被引：5
作者：
Ghasemi, Seyed Mehdi [1 ]
Ghaderpoori, Mansour [2 ]
Moradi, Bigard [3 ]
Taghavi, Mahmoud [4 ]
Karimyan, Kamaladdin [5 ]
Mehdipour, Fayyaz [6 ]
机构：
[1] Babol Univ Med Sci, Deputy Hlth, Babol Sar, Iran
[2] Lorestan Univ Med Sci, Sch Hlth & Nutr, Dept Environm Hlth Engn, Khorramabad, Iran
[3] Kermanshah Univ Med Sci, Dept Hlth Publ, Kermanshah, Iran
[4] Gonabad Univ Med Sci, Social Dev & Hlth Promot Res Ctr, Sch Publ Hlth, Dept Environm Hlth Engn, Gonabad, Iran
[5] Kurdistan Univ Med Sci, Environm Hlth Res Ctr, Sanandaj, Iran
[6] Shahid Beheshti Univ Med Sci, Sch Publ Hlth & Safety, Dept Environm Hlth Engn, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2022年 / 102卷 / 13期
关键词：
Adsorption; Box-Behnken design; chromium; modified sesame hull; isotherms; HEAVY-METAL IONS; AGRICULTURAL WASTE; ACTIVATED CARBON; HEXAVALENT CHROMIUM; REMOVAL; EQUILIBRIUM; SORPTION; ADSORBENT; KINETICS; WATER;
D O I：
10.1080/03067319.2020.1763972
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The presence of chromium in the environment can be the cause of many toxic effects. The aim of this study was chromium adsorption by modified sesame hull at batch conditions. The effect of different variables such as pH, contact time, chromium concentration, and adsorbent dosage on the chromium adsorption was studied using the Box-Behnken Design. The high R-2 (0.9763) indicated a high correlation between the experimental and predicted values. The optimum pH, contact time, initial chromium concentration and adsorbent dosage were found to be 3, 120 min, 23.23 mg/l and 4.94 g/l, respectively. At optimum conditions, the removal efficiency of chromium obtained 100%. The results indicated that BBD model could efficiently predict the optimum conditions for the chromium adsorption. The modified sesame hull can be used as an efficient adsorbent for chromium removal from aqueous solutions.
引用
收藏
页码：3094 / 3108
页数：15
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