Synthesis of clay-cellulose biocomposite for the removal of toxic metal ions from aqueous medium

被引：65

作者：

Abu-Danso, Emmanuel ^{[1
]}

Peraniemi, Sirpa ^{[2
]}

Leiviska, Tlina ^{[3
]}

Kim, TaeYoung ^{[4
]}

Tripathi, Kumud Malika ^{[4
]}

Bhatnagar, Amit ^{[1
]}

机构：

[1] Univ Eastern Finland, Dept Environm & Biol Sci, FI-70211 Kuopio, Finland

[2] Univ Eastern Finland, Sch Pharm, FI-70211 Kuopio, Finland

[3] Univ Oulu, Chem Proc Engn, POB 4300, FI-90014 Oulu, Finland

[4] Gachon Univ, Dept Bionanotechnol, 1342 Seongnamdaero, Seongnam 13120, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2020年 / 381卷

关键词：

Halloysite clay; Cellulose; Biocomposite; Lead; Cadmium; Adsorption; HEAVY-METALS; ADSORPTION; LEAD(II);

D O I：

10.1016/j.jhazmat.2019.120871

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Clay-cellulose biocomposite (CCB) was synthesized in the present study. Spin and pressure-induced heating was applied to aggregate exfoliated clay tubules and cellulose using polyethylene glycol as an intermediate. The synthesized CCB was modified in the presence of NaOH at high temperature to obtain negative surface charge on the adsorbent. Physico-chemical properties of CCB were evaluated using different characterization techniques including Fourier transform infrared (FT-IR) and X-ray photoelectron (XPS) spectroscopy. The efficiency of the synthesized biocomposite for Pb(II) and Cd(II) removal from water was studied via laboratory scale experiments. The adsorption kinetics of Pb(II) and Cd(II) onto CCB was well described by the pseudo-second-order kinetic model. The maximum Langmuir adsorption capacity of CCB was found to be 389.78 and 115.96 mg g(-1) for Pb (II) and Cd(II), respectively. Fixed-bed column studies were conducted for the adsorption system to compare the adsorption performance of CCB in continuous mode.

引用

页数：11

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