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[1]林美珊,陈 玉*,陈 婷.稻壳灰对水体中Cu2+的吸附性能[J].武汉工程大学学报,2020,42(01):38-44.[doi:10.19843/j.cnki.CN42-1779/TQ.201905008]
 LIN Meishan,CHEN Yu*,CHEN Ting.Adsorptive Performance and Mechanism of Cu2+ on Rice Husk Ash[J].Journal of Wuhan Institute of Technology,2020,42(01):38-44.[doi:10.19843/j.cnki.CN42-1779/TQ.201905008]
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稻壳灰对水体中Cu2+的吸附性能(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
42
期数:
2020年01期
页码:
38-44
栏目:
化学与化学工程
出版日期:
2021-01-25

文章信息/Info

Title:
Adsorptive Performance and Mechanism of Cu2+ on Rice Husk Ash
文章编号:
1674 - 2869(2020)01 - 0038 - 07
作者:
林美珊陈 玉*陈 婷
福建师范大学福清分校海洋与生化工程学院;近海流域环境测控治理福建省高校重点实验室,福建 福清 350300
Author(s):
LIN MeishanCHEN Yu* CHEN Ting
School of Ocean and Biochemistry Engineering; Fujian Colleges Key Laboratory of Measurement and Control System for Coastal Environment,Fuqing Branch of Fujian Normal University, Fuqing 350300,China
关键词:
稻壳灰吸附Cu2+动力学等温吸附
Keywords:
rice husk ash adsorption Cu2+ kinetics isothermal adsorption
分类号:
X523
DOI:
10.19843/j.cnki.CN42-1779/TQ.201905008
文献标志码:
A
摘要:
为了解决处理含铜重金属废水时成本高和效率低等问题,选用廉价且吸附性能较好的吸附剂成为研究中的热点问题。文章以稻壳为原料制备稻壳灰吸附剂,通过单因素实验研究Cu2+质量浓度、pH值、吸附剂投加量、时间、温度等对吸附效果的影响;通过正交实验得出吸附Cu2+的最佳条件;通过扫描电镜及红外光谱测定,对吸附前后的稻壳灰进行表征分析。实验结果表明:溶液pH对吸附效果影响极大,当4≤pH≤6时,吸附率较高,pH过低或过高均不利于吸附;在前0.5 h内吸附速度很快,1 h后吸附基本完成。稻壳灰吸附Cu2+的最佳条件为:稻壳灰投加量20.0 g/L、35 ℃、Cu2+质量浓度30 mg/L、吸附时间1 h、溶液初始pH为6。准二级动力学模型和Langmuir等温吸附模型可较好地描述稻壳灰对Cu2+的吸附过程。
Abstract:
To deal with high cost and low efficiency in the treatment of copper-containing heavy metal wastewater, an adsorbent with low cost and good adsorption capability becomes a hot issue. The rice husk ash adsorbent was prepared from rice husk as raw material. The effects of Cu2+ mass concentration, pH value, adsorbent dosage, time and temperature on the adsorption were studied by single factor experiment. The rice husk ash before and after adsorption was characterized by scanning electron microscopy and infrared spectroscopy. The experimental results show that the pH of solution has a great influence on the adsorption effect. The adsorption rate is high at pH of 4-6. Too low or too high pH is not favorable to the adsorption. The adsorption speed was very fast in the first half hour, and the adsorption was almost finished after one hour. The optimum conditions for the adsorption of Cu2+ by rice husk ash were obtained at 20.0 g/L of rice ash dosage, 35 ℃, 30 mg/L of Cu2+ mass concentration, 1 h of adsorption time, pH 6 of initial solution. Quasi-second-order dynamic model and Langmuir isotherm adsorption model can better describe the adsorption process of Cu2+ by rice husk ash.

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备注/Memo

备注/Memo:
收稿日期:2019-03-18 基金项目:福建省中青年教师教育科研项目(JAT170672);近海流域环境测控治理福建省高校重点实验室开放基金(S1-KF1605)作者简介:林美珊,硕士,实验师。E-mail:[email protected]*通讯作者:陈 玉,硕士,副教授。E-mail:[email protected]引文格式:林美珊,陈玉,陈婷. 稻壳灰对水体中Cu2+的吸附性能[J]. 武汉工程大学学报,2020,42(1):38-44.
更新日期/Last Update: 2020-06-09