首页|MPTS改性高岭土吸附剂的制备及其吸附性能研究

MPTS改性高岭土吸附剂的制备及其吸附性能研究

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为了处理含电镀络合铜废水,以3-巯丙基三甲氧基硅烷(MPTS)为改性剂,对高岭土进行改性,制备了改性高岭土吸附剂,并研究了其对柠檬酸络合铜(E330-Cu)的吸附效果.适宜的高岭土改性条件为:MPTS相对高岭土用量为0.04 mL/g、改性温度50℃、改性时间6h.改性高岭土吸附剂对E330-Cu适宜的吸附条件为:E330-Cu初始浓度5 mg/L、吸附剂相对用量15 g/L、pH值4.5、吸附时间35 min、吸附温度35 ℃,此时吸附率达到92.50％.吸附过程满足Langmuir等温吸附模型和准二级动力学模型.吸附剂至少可使用3次,处理后废水可达到国家一级排放标准.研究结果可为含电镀络合铜废水的处理提供有力支撑.
Preparation of MPTS-Modified Kaolin Adsorbent and Its Adsorption Properties
In order to process copper complex wastewater from electroplating industry,a kind of kaolin was modified by using a modifier of 3-mercaptopropyl trimethoxysilane(MPTS)to be as an adsorbent,and its adsorption of E330-Cu was then studied.It is found that kaolin shall be properly modified at 50 ℃ for 6 hours with the modifier MPTS at an amount of 0.04 mL/g,which is then adopted as an adsorbent for E330-Cu.After 35 min-adsorption at 35 ℃,with E330-Cu at an initial concentration of 5 mg/L,adsorbent at an amount of 15 g/L,and pH value of 4.5,the final adsorption rate can reach 92.50％.It is shown that the adsorption process follows Langmuir isothermal adsorption model and quasi-second-order kinetic model.This kind of adsorbent can be repeatedly used for at least 3 times,and the wastewater after processing can meet the national class Ⅰ discharge standard.This research can provide reference for the treatment of copper-containing complex wastewater from electroplating industry.

wastewater treatmentadsorbent3-mercaptopropyl trimethoxysilane(MPTS)kaolin modificationelectroplating wastewateradsorption

谢雪珍、胡杨玲、叶有明、曾军

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广西科技师范学院,广西来宾 546199

废水处理 吸附剂 3-巯丙基三甲氧基硅烷 改性高岭土 电镀废水 吸附

广西无机材料绿色制备与应用重点实验室项目来宾市金属材料加工与清洁生产重点实验室项目广西科技师范学院青年科研创新团队项目

桂科AD20297139来科能193301GXKS2020QNTD04

2024

10.3969/j.issn.0253-6099.2024.01.023

矿冶工程
长沙矿冶研究院有限责任公司 中国金属学会

矿冶工程

CSTPCD北大核心
影响因子：1.137
ISSN：0253-6099
年,卷(期)：2024.44(1)
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