A highly efficient nanoscale tapioca starch prepared by high-speed jet for Cu2+ removal in simulated industrial effluent
文献类型： 外文期刊
作者： Lian, Fengli 1 ; Huang, Xiaobing 1 ; Lin, Yanyun 1 ; Xia, Wen 1 ; Fu, Tiaokun 1 ; Wang, Fei 1 ; He, Dongning 3 ; Zhou, We 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Minist Agr & Rural Affairs, Key Lab Trop Crop Prod Proc, Zhanjiang 524001, Guangdong, Peoples R China
2.South China Univ Technol, Sch Food Sci & Engn, Overseas Expertise Intro Ctr Discipline Innovat F, Guangzhou, Peoples R China
3.Lingnan Normal Univ, Sch Chem & Chem Engn, Zhanjiang, Peoples R China
4.Hainan Key Lab Storage & Proc Fruits & Vegetables, Zhanjiang, Peoples R China
关键词： nanoscale tapioca starch; adsorption; heavy metals; adsorption mechanism
期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）
ISSN： 0022-5142
年卷期：
页码：
收录情况： SCI
摘要： BACKGROUND Nanoscale tapioca starch (NTS) was successfully developed by high-speed jet in our previous study. In this study, the adsorption capacity of Cu2+ onto NTS was further discussed. The optimal adsorption conditions (pH, contact time, contact temperature, initial Cu2+ concentration, and adsorbent concentration), adsorption kinetics, isotherms, and thermodynamic were also evaluated. RESULTS The results showed that NTS exhibited excellent performance in adsorption of Cu2+, with adsorption capacities of 122.31 mg g(-1) for Cu2+ (pH 7, 0.04 g L-1, 0.2 g L-1, 313.15 K and 10 min). The pseudo-second-order and Langmuir isotherms models could be used to explain the adsorption kinetics and adsorption equilibrium, respectively. The thermodynamic results showed that the adsorption process was spontaneous and endothermic with an increase in entropy. Cu2+ was adsorbed onto NTS, which was confirmed by energy dispersive spectrometry analysis. CONCLUSION These findings indicated that NTS might be an effective, environment-friendly and renewable bio-resource adsorbent for removing heavy metals in industrial effluent. (c) 2021 Society of Chemical Industry
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