废白土炭对印染废水中甲基橙的吸附研究
Study on adsorption of methyl orange in printing and dyeing wastewater by spent bleaching earth carbon
卢俊杰 1张仁果 1潘烁伊 1王阳阳 1史亚慧 1万东锦 1张明畅2
作者信息
- 1. 河南工业大学 环境工程学院,河南 郑州 450001
- 2. 新乡学院,河南 新乡 453003
- 折叠
摘要
本研究以油脂精炼行业副产物废白土(SBE)为原料,通过缺氧高温热解法制备废白土炭(SBE@C),用以吸附去除印染废水中的染料甲基橙.研究结果显示,1、2、3 g/L的 SBE@C对甲基橙的吸附容量在 180 min 时分别为 12.53、7.14、5.12 mg/g,其吸附动力学更符合伪二级动力学模型,吸附等温线更符合Freundlich模型.进一步研究SBE@C对于复合染料(甲基橙-曙红Y-茜素红)的吸附性能,考察了溶液离子强度及共存阴离子对SBE@C吸附能力的影响,结果表明,共存Cl-对SBE@C吸附能力的抑制作用随离子强度的增加而增加,CO2-3、Cl-、PO3-4 和SO2-4 4 种共存离子对SBE@C吸附染料均存在抑制作用.
Abstract
In this study,spent bleaching earth carbon(SBE@C)was prepared by anoxic high-temperature pyrolysis of spent bleaching earth(SBE),which is a by-product of oil refining industry.SBE@C could remove methyl orange from printing and dyeing wastewater.The results showed that the adsorption capacity of methyl orange on 1,2 and 3 g/L SBE@C were 12.53,7.14 and 5.12 mg/g at 180 min,respectively.The adsorption kinetics of methyl orange on SBE@C was more in accordance with pseudo-second order kinetic model,and the adsorption isotherm fitted the Freundlich model better.Furthermore,the adsorption performance of SBE@C for complex dyes(methyl orange-eosin Y-alizarin red)was also investigated.The effect of ionic strength and coexisting anions on the adsorption of SBE@C were studied.The results indicated that the inhibitory effect of coexisting Cl-on the adsorption of SBE@C increased with the increase of ionic strength.CO2-3,Cl-,PO3-4 and SO2-4 all showed inhibitory effect on the adsorption of SBE@C.
关键词
废白土炭/印染废水/吸附/甲基橙Key words
Spent bleaching earth carbon/printing and dyeing wastewater/adsorption/methyl orange引用本文复制引用
基金项目
郑州市科技协同创新专项重点项目(21ZZXTCX05)
河南工业大学自科创新基金支持计划(2021ZKCJ09)
出版年
2024
NETL
NSTL
万方数据