Preparation of biochar from pyrolysis of soybean straw at different pyrolysis temperature for cadmium removal from wastewater and pyrolysis gas investigation

被引：3
|
作者：
Lv, Chao [1 ]
Liu, Peng [2 ]
Cheng, Song [3 ]
机构：
[1] Shanxi Datong Univ, Sch Coal Engn, Datong 037009, Shanxi, Peoples R China
[2] Panzhihua Univ, Sch Vanadium & Titanium, Panzhihua 617000, Peoples R China
[3] Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo 454003, Peoples R China
来源：
ARABIAN JOURNAL OF CHEMISTRY | 2024年 / 17卷 / 09期
关键词：
Soybean straw; Pyrolysis; Cd2+; Adsorption; Energy storage; ACTIVATED CARBON; ADSORPTION; LEAD; MECHANISMS; SORPTION;
D O I：
10.1016/j.arabjc.2024.105946
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The Cd2+ adsorption performance of biochar derived from soybean straw pyrolysis at 400-600 degrees C is investigated. Langmuir model can accurately describe the Cd2+ adsorption data with adsorption amount of 47.30 mg/g with pH=5. Cd2+ adsorption kinetic process could be analyzed using Pseudo-second-order. Biochar has large Cd2+ wastewater treatment volume, based on column adsorption experiment. The it-electrons play an important role in Cd2+ adsorption, based on adsorption mechanism analysis. Biochar has good stability after three cycles. Biochar also has good application potential used in lithium ion battery anode with specific capacity of 132 mA g(-1). Besides, pyrolysis gas is recycled in the preparation process of biochar with heating value of the 12.10 MJ/Nm(3). These results indicate that soybean straw waste is converted into sustainable adsorbent for Cd2+ wastewater treatment.
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页数：7
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