The treatment of high-heavy metal ion-containing waste drilling fluid by β-cyclodextrin/bentonite

doi:10.11894/iwt.2019-0274

Industrial Water Treatment ›› 2020, Vol. 40 ›› Issue (3): 27-30. doi: 10.11894/iwt.2019-0274

• Research and Experiment • Previous Articles Next Articles

The treatment of high-heavy metal ion-containing waste drilling fluid by β-cyclodextrin/bentonite

Wenxin Dong¹(),Xiaolin Pu^1,*(),Yufeng Zhai¹,Qixin Yin²

1. Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China
2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China

Received:2019-12-18 Online:2020-03-20 Published:2020-03-20
Contact: Xiaolin Pu E-mail:511126a22pc.cdb@sina.cn;puxiaolin@vip.sina.com
Supported by:
“十三五”国家重大专项(2011ZX05020-004);国家重点基础研究发展计划(2013CB228003);国家自然科学基金青年科学基金项目(51804263);西南石油大学研究生科研创新基金(2019cxyb024)

β-环糊精/膨润土处理高含量重金属废弃钻井液

董汶鑫¹(),蒲晓林^1,*(),翟玉芬¹,尹启新²

1. 西南石油大学石油与天然气工程学院, 四川成都 610500
2. 西南石油大学化学化工学院, 四川成都 610500

通讯作者: 蒲晓林 E-mail:511126a22pc.cdb@sina.cn;puxiaolin@vip.sina.com
作者简介:董汶鑫(1994-),博士。电话:18010604207, E-mail:511126a22pc.cdb@sina.cn
基金资助:
“十三五”国家重大专项(2011ZX05020-004);国家重点基础研究发展计划(2013CB228003);国家自然科学基金青年科学基金项目(51804263);西南石油大学研究生科研创新基金(2019cxyb024)

Abstract

Abstract:

The highly effective heavy metal adsorbent was prepared with β-cyclodextrin and bentonite to treat the heavy metal-containing waste drilling fluid. The adsorption behavior of β-cyclodextrin/bentonite for Cd(Ⅱ) and Cr(Ⅲ) is highly fitted to D-R equation, and the adsorption kinetics is in accordance with the quasi-second-order kinetic model. The adsorption process is controlled by chemical and ion exchange adsorption. When the dosage of β-cyclodextrin/bentonite is 9 g/L at room temperature(25℃), the heavy metal content of waste drilling fluid can meet the limit of Environmental Quality Standard for Surface Water(GB 3838-2002) and the adsorption equilibrium time is 9 min.

Key words: waste drilling fluid, β-cyclodextrin, bentonite, adsorption, heavy metal

摘要：

针对重金属含量严重超标的废弃钻井液，提出以β-环糊精与膨润土联合制备高效重金属吸附剂。β-环糊精/膨润土对Cd（Ⅱ）与Cr（Ⅲ）的吸附行为高度符合D-R方程，符合准二级动力学模型，吸附过程受化学及离子交换吸附控制。室温（25℃）下β-环糊精/膨润土投加质量浓度为9 g/L，处理结果可达《地表水环境质量标准》（GB 3838— 2002）Ⅱ类水体标准，吸附平衡时间为9 min。

关键词: 废弃钻井液, β-环糊精, 膨润土, 吸附, 重金属

CLC Number:

X741

Wenxin Dong,Xiaolin Pu,Yufeng Zhai,Qixin Yin. The treatment of high-heavy metal ion-containing waste drilling fluid by β-cyclodextrin/bentonite[J]. Industrial Water Treatment, 2020, 40(3): 27-30.

董汶鑫,蒲晓林,翟玉芬,尹启新. β-环糊精/膨润土处理高含量重金属废弃钻井液[J]. 工业水处理, 2020, 40(3): 27-30.

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Figures/Tables 8

References 12

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离子	Langmuir			Freundlich			D-R
离子	q_m(mg·g^-1)	B/(L·mg^-1)	R²	n/(g·L^-1)	K_F/(L·mg^-1)	R²	q_m/(mg·g^-1)	E/(kJ·mol^-1)	R²
Cd²⁺		-		0.602	0.002 7	0.971	3.84	42.51	0.998
Cr³⁺		-		0.579	0.002 7	0.974	4.90	43.37	0.995

离子	Langmuir			Freundlich			D-R
离子	q_m(mg·g^-1)	B/(L·mg^-1)	R²	n/(g·L^-1)	K_F/(L·mg^-1)	R²	q_m/(mg·g^-1)	E/(kJ·mol^-1)	R²
Cd²⁺		-		0.602	0.002 7	0.971	3.84	42.51	0.998
Cr³⁺		-		0.579	0.002 7	0.974	4.90	43.37	0.995

离子	动力学方程	q_exp/ （mg·g^-1）	q_cal/ （mg·g^-1）	k²	R²
Cr³⁺	y=0.387 6x+0.000 6	2.62	2.58	235.61	0.993 1
Cd²⁺	y=0.512 8x+0.001 2	1.97	1.95	214.53	0.984 4

离子	动力学方程	q_exp/ （mg·g^-1）	q_cal/ （mg·g^-1）	k²	R²
Cr³⁺	y=0.387 6x+0.000 6	2.62	2.58	235.61	0.993 1
Cd²⁺	y=0.512 8x+0.001 2	1.97	1.95	214.53	0.984 4

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