鸡蛋壳生物炭的制备及其对Cu(Ⅱ)和苯胺的吸附性能

李微; 张冀; 朱心雨; 潘文浩; 祝雷

doi:10.13205/j.hjgc.202305014

鸡蛋壳生物炭的制备及其对Cu(Ⅱ)和苯胺的吸附性能

doi: 10.13205/j.hjgc.202305014

李微^1, ,,
张冀¹,
朱心雨²,
潘文浩¹,
祝雷³

1. 沈阳建筑大学市政与环境工程学院, 沈阳 110168;
2. 中国建筑一局(集团)有限公司华北公司, 天津 300450;
3. 沈阳环境科学研究院, 沈阳 110016

基金项目:

辽宁省教育厅科研项目(lnqn202010)

沈阳市科技计划项目(22-322-3-10)

辽宁省应用基础研究计划项目(2023030002-JH2/1013)

辽宁省科技厅自然科学基金(2019ZD0671)

详细信息

作者简介:
李微(1982-),女,博士,副教授。liweilengjinyue@163.com

通讯作者:
李微(1982-),女,博士,副教授。liweilengjinyue@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2022-11-27

PREPARATION OF EGG SHELL BIOCHAR AND ITS ADSORPTION PERFORMANCE FOR Cu(Ⅱ) AND ANILINE

LI Wei^{1
, ,},
ZHANG Ji¹,
ZHU Xinyu²,
PAN Wenhao¹,
ZHU Lei³

1. School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. China Construction First Bureau Group North China Construction Co., Ltd, Tianjin 300450, China;
3. Shenyang Academy of Environmental Sciences, Shenyang 110016, China

摘要

摘要: 生物炭吸附剂因其巨大的比表面积和经济环保特性,在水污染治理领域具有广阔的应用前景。利用餐余垃圾鸡蛋壳为原材料制备生物炭吸附剂,采用扫描电镜(SEM)、X射线衍射(XRD)、磁滞回线(VSM)分析鸡蛋壳生物炭理化性能,采用单因素实验分析生物炭对Cu(Ⅱ)和苯胺混合污染物最佳吸附性能,利用磁铁回收负磁吸附剂后进行吸附解吸实验,研究其循环利用的稳定性。结果表明:在热解温度850 ℃,固液比1∶2,1% KMnO₄改性12 h条件下,成功制备出鸡蛋壳生物炭,改性后的生物炭具有良好的吸附空间结构和磁性,比表面积有显著提升。pH=6.0, 25 ℃,Cu(Ⅱ)和苯胺初始浓度为20,10 mg/L,吸附剂15 g/L,吸附时间24 h为生物炭最佳吸附条件,此时Cu(Ⅱ)和苯胺最大吸附容量为1.33,0.64 mg/g。鸡蛋壳生物炭具有良好的循环再生性能,经4次循环再生后,Cu(Ⅱ)和苯胺去除率分别达到82.47%和70.08%。鸡蛋壳生物炭被证明是一种具有潜力的吸附材料。
- 鸡蛋壳生物炭 /
- 吸附 /
- Cu(Ⅱ) /
- 苯胺 /
- 循环再生
Abstract: Biochar for adsorption has been used in water pollution control, it has enormous specific surface area and is economical and environment-friendly. In this paper, eggshell biochar was prepared and its physicochemical and structural characteristics were detected by scanning electron microscopy (SEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), and influencing factors and adsorption performance on Cu(Ⅱ) and aniline mixed pollutants was investigated by single-factor experiment. Meanwhile, the cycle regeneration stability of eggshell biochar was analyzed by magnet recovery, adsorption and desorption experiments. The experimental results showed that the eggshell biochar was successfully prepared at the pyrolysis temperature of 850 ℃, modified with 1% KMnO₄ for 12 h and the solid-liquid ratio of 1∶2. The modified biochar had good adsorption space structure and magnetic properties, and the specific surface area was significantly improved. pH of 6.0, 25 ℃, initial concentration of Cu(Ⅱ) and aniline of 20 mg/L and 10 mg/L, 15 g/L of eggshell biochar, and 24 h adsorption time were the best adsorption conditions for biochar. The maximum adsorption capacity of Cu(Ⅱ) and aniline was 1.33 mg/g and 0.64 mg/g and eggshell biochar had good recycling performance, after four cycles of regeneration, the removal rates of Cu(Ⅱ) and aniline were still kept at 82.47% and 70.08%, respectively. Eggshell biochar is a potential adsorption material.
- eggshell biochar /
- adsorption /
- Cu(Ⅱ) /
- aniline /
- regeneration

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