Removal of Pb~(2+) and Cd~(2+) from aqueous solution using chars from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell

Sunday E. Elaigwu; Vincent Rocher; Georgios Kyriakou

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Removal of Pb~(2+) and Cd~(2+) from aqueous solution using chars from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell

机译：非洲象鼻壳热解炭和微波辅助水热碳化法从水溶液中去除Pb〜（2+）和Cd〜（2+）

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Biochar and hydrochar prepared from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell respectively were used as adsorbents for the removal Pb~(2+) and Cd~(2+) from aqueous solution using batch adsorption technique. The materials proved to have good adsorption capacities and higher than some previously studied adsorbents. Maximum adsorption capacities for the hydrochar and biochar were 45.3 and 31.3 mg/g for Pb~(2+) and 38.3 and 29.9 mg/g for Cd~(2+), respectively. The adsorption process followed pseudo-second-order kinetics and the adsorption data fitted the Langmuir isotherm model. These materials could therefore be used as a low cost adsorbents in wastewater treatment.

机译：分别用非洲象鼻壳的热解和微波辅助水热碳化制备的生物碳和水碳作为吸附剂，采用分批吸附技术从水溶液中去除Pb〜（2+）和Cd〜（2+）。事实证明该材料具有良好的吸附能力，并且比某些先前研究的吸附剂更高。水炭和生物炭对Pb〜（2+）的最大吸附容量分别为45.3和31.3 mg / g，对Cd〜（2+）的最大吸附容量分别为38.3和29.9 mg / g。吸附过程遵循拟二级动力学，吸附数据符合Langmuir等温模型。因此，这些材料可用作废水处理中的低成本吸附剂。

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《Journal of industrial and engineering chemistry》 |2014年第5期|共7页
作者
Sunday E. Elaigwu; Vincent Rocher; Georgios Kyriakou;
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正文语种 eng
中图分类化学工业;
关键词
Biochar; Hydrochar; Microwave; Lead; Cadmium; Adsorption;

机译：生物碳;氢碳;微波;铅;镉;吸附;

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1. Removal of Pb~(2+) and Cd~(2+) from aqueous solution using chars from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell [J] . Sunday E. Elaigwu, Vincent Rocher, Georgios Kyriakou Journal of industrial and engineering chemistry . 2014,第5期

机译：非洲象鼻壳热解炭和微波辅助水热碳化法从水溶液中去除Pb〜（2+）和Cd〜（2+）
2. Preparation of Activated Carbon From Olive Stone Waste: Optimization Study on the Removal of Cu~(2+), Cd~(2+), Ni~(2+), Pb~(2+), Fe~(2+), and Zn~(2+) from Aqueous Solution Using Response Surface Methodology [J] . Tamer M. Alslaibi, Ismail Abustan, Mohd Azmier Ahmad, Journal of Dispersion Science and Technology . 2014,第7a9期

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Removal of Pb~(2+) and Cd~(2+) from aqueous solution using chars from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell

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