A composite adsorbent of superparamagnetic nanoparticles with sludge biomass derived activated carbon for the removal of chromium (VI)

被引：11
|
作者：
Ramya, Vijayan [1 ]
Murugan, Devaraj [2 ]
Lajapathirai, Chokkalingam [1 ]
Meenatchisundaram, Sivarajan [3 ]
Arumugam, Sivasamy [1 ]
机构：
[1] CSIR Cent Leather Res Inst, Catalysis Sci Lab, Chennai 600020, India
[2] CSIR Cent Leather Res Inst, Chem & Biol Pilot Plants, Chennai 600020, India
[3] CSIR Cent Leather Res Inst, Cell Ind Safety & Risk Anal, Chennai 600020, India
来源：
JOURNAL OF CLEANER PRODUCTION | 2022年 / 366卷
关键词：
Magnetized nanoparticle; Activated carbon; Adsorption; Sludge biomass; Chromium (VI); Kinetics; AQUEOUS-SOLUTIONS; CHEMICAL ACTIVATION; MAGNETIC CHITOSAN; ADSORPTION; SORPTION; MODELS; WATER; OXIDE; KINETICS; COMPLEX;
D O I：
10.1016/j.jclepro.2022.132853
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Superparamagnetic nanoparticles/sludge biomass derived activated carbon composite was prepared and characterized using FT-IR, XRD, FE-SEM, HR-TEM, and Vibrating Sample Magnetometer (VSM). The surface area, porosity and pore volume were evaluated using BET method. The composite adsorbent had a specific surface area of 119.56 m(2)/g and saturation magnetization value of 2.35 emu/g. The iron oxide nanoparticles were in the size range of 15-30 nm. The composite adsorbent was utilized for the removal of Cr (VI) from aqueous solution. Langmuir, Freundlich and Temkin model isotherms were employed to study the adsorption phenomena. Monolayer adsorption capacity of the adsorbent for Cr (VI) was 80.21 mg/g at pH 2.0. Thermodynamics of the adsorption process was studied and the prepared composite adsorbent showed better stability and recyclability for multiple use.
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页数：10
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