Preparation of biochar from celery seed residue and its adsorption performance for phenol

doi:10.11894/iwt.2019-0670

Industrial Water Treatment ›› 2020, Vol. 40 ›› Issue (6): 36-39. doi: 10.11894/iwt.2019-0670

• Research and Experiment • Previous Articles Next Articles

Preparation of biochar from celery seed residue and its adsorption performance for phenol

Kai Xu^1,²(),Ke Tang^1,^2,*(),Chun Chang¹,Liying Meng¹

1. College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China
2. Key Laboratory for Synthesis and Application of the Functional Compounds, Jinzhou 121013, China

Received:2020-04-21 Online:2020-06-20 Published:2020-06-20
Contact: Ke Tang E-mail:bdxukai@163.com;tangke1984@126.com

芹菜籽源药渣生物炭制备及对苯酚的吸附性能

徐恺^1,²(),唐克^1,^2,*(),常春¹,蒙丽颖¹

1. 渤海大学化学化工学院, 辽宁锦州 121013
2. 辽宁省功能化合物的合成及应用重点实验室, 辽宁锦州 121013

通讯作者: 唐克 E-mail:bdxukai@163.com;tangke1984@126.com
作者简介:徐恺(1994—), 硕士。电话:13897857305, E-mail:bdxukai@163.com
基金资助:
国家自然科学基金青年项目(21606023);辽宁省自然科学基金项目(20180550030);锦州市科技计划项目(16A2G26)

Abstract

Abstract:

Biochar was prepared by H₃PO₄ two-step activation and pyrolysis using celery seed residue extracted by steam distillation as precursor. Its adsorption performance for phenol in water was studied. The results of SEM and FTIR showed that a large number of oxygen-containing functional groups were found on its surface. The results of the adsorption test showed that 71.4% of phenol(50 mg/L) was removed after using 3 g/L of biochar. The phenol adsorption process on biochar conformed to the Freundlich isotherm equation and pseudo-second-order kinetic model. The maximum adsorption capacity was 50.56 mg/g.

Key words: celery seed residue, biochar, adsorption, phenol

摘要：

以经过水蒸气蒸馏法提取后的芹菜籽残渣为前驱体，采用H₃PO₄两步活化和热解法制备生物炭，并研究了其对水中苯酚的吸附性能。SEM、FTIR的表征结果表明，制备的生物炭表面含有大量含氧官能团。吸附试验结果表明，对初始质量浓度为50 mg/L的苯酚溶液，当吸附剂投加量为3 g/L时，苯酚去除率可以达到71.4%。生物炭上的苯酚吸附过程符合Freundlich等温方程和伪二级动力学模型，最大吸附容量可达50.56 mg/g。

关键词: 芹菜籽药渣, 生物炭, 吸附, 苯酚

CLC Number:

X703

Kai Xu,Ke Tang,Chun Chang,Liying Meng. Preparation of biochar from celery seed residue and its adsorption performance for phenol[J]. Industrial Water Treatment, 2020, 40(6): 36-39.

徐恺,唐克,常春,蒙丽颖. 芹菜籽源药渣生物炭制备及对苯酚的吸附性能[J]. 工业水处理, 2020, 40(6): 36-39.

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URL: https://www.iwt.cn/EN/10.11894/iwt.2019-0670

https://www.iwt.cn/EN/Y2020/V40/I6/36

Figures/Tables 9

References 11

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苯酚初始质量浓度/（mg·L^-1）	Q_e，exp/（mg·g^-1）	伪一级动力学模型			伪二级动力学模型
苯酚初始质量浓度/（mg·L^-1）	Q_e，exp/（mg·g^-1）	k₁/min^-1	Q_e，cal/（mg·g^-1）	R²	k₂/（g·mg^-1·min^-1）	Q_e，cal/（mg·g^-1）	R²
30	21.492	0.044 3	20.093	0.982 3	0.002 137	21.631	0.999 3
50	27.361	0.037	25.364	0.978 6	0.001 313	27.594	0.999 1
70	39.134	0.032	35.387	0.986 1	0.000 64	39.526	0.998 7

苯酚初始质量浓度/（mg·L^-1）	Q_e，exp/（mg·g^-1）	伪一级动力学模型			伪二级动力学模型
苯酚初始质量浓度/（mg·L^-1）	Q_e，exp/（mg·g^-1）	k₁/min^-1	Q_e，cal/（mg·g^-1）	R²	k₂/（g·mg^-1·min^-1）	Q_e，cal/（mg·g^-1）	R²
30	21.492	0.044 3	20.093	0.982 3	0.002 137	21.631	0.999 3
50	27.361	0.037	25.364	0.978 6	0.001 313	27.594	0.999 1
70	39.134	0.032	35.387	0.986 1	0.000 64	39.526	0.998 7

苯酚初始质量浓度/（mg·L^-1）	C	k_ip /（mg·g^-1·min^-0.5）	R²
30	18.754	0.105 4	0.879 77
50	23.329	0.147 92	0.923 41
70	30.493	0.339 77	0.824 73

苯酚初始质量浓度/（mg·L^-1）	C	k_ip /（mg·g^-1·min^-0.5）	R²
30	18.754	0.105 4	0.879 77
50	23.329	0.147 92	0.923 41
70	30.493	0.339 77	0.824 73

温度/K	Freundlich等温方程			Langmuir等温方程
温度/K	K_F	1/n	R²	Q_m/（mg·g^-1）	K_L/（L·mg^-1）	R²	R_L
298	3.214	0.526	0.994	35.43	0.043 4	0.982 1	0.247
308	3.573	0.561	0.998	43.48	0.045 2	0.970 5	0.240
318	3.899	0.591	0.995	50.56	0.057 3	0.986 7	0.199

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