|
| 时间和温度对活性炭与板栗壳吸附铜锌铅镉的影响 |
| Effects of Time and Temperature on Adsorption of Cu2+、Zn2+、Pb2+、Cd2+by Activated Carbon and Chestnut Shell |
| Received:May 16, 2013 |
| DOI： |
| 中文关键词: 活性炭;板栗壳;铜;锌;铅;镉;时间;温度;吸附 |
| 英文关键词: activated carbon;chestnut shell;Cu2+;Zn2+;Pb2+;Cd2+;time;temperature;adsorption |
| 基金项目: |
| Author Name | Affiliation | | DUAN Mengchen | College of Urban and Environment,Northwestern University,Xi'an,710127, China | | XUE Keshe | College of Urban and Environment,Northwestern University,Xi'an,710127, China | | ZOU Zhuobiao | College of Urban and Environment,Northwestern University,Xi'an,710127, China |
|
| Hits: 2046 |
| Download times: 2286 |
| 中文摘要: |
| 随着工业化和城市化进程的加快,废水排放引起的水环境重金属污染问题越来越突出,去除污水中的重金属成为水环境保护的重要内容之一。本文选取活性炭与板栗壳作为吸附剂,研究在不同的时间及温度下,这2种吸附剂对废水中的Cu2+、Zn2+、Pb2+、Cd2+的吸附性能影响。研究发现,活性炭作为吸附剂时,Cu2+吸附量最大是在0.5 h时,Zn2+是在3 h时,Pb2+和Cd2+则是1 h时;用板栗壳吸附时,Cu2+和Pb2+吸附量最大在1 h,Zn2+是在1 h时,Cd2+则是0.5 h时。吸附剂为活性炭或板栗壳,温度对Zn2+的吸附率影响都不大;吸附Cu2+时,活性炭受温度的影响大于板栗壳,其吸附率随温度的升高而减小;Pb2+和Cd2+的吸附受温度影响明显,均是40℃时吸附率较高,但板栗壳＞活性炭,且Cd2+＞Pb2+。 |
| 英文摘要: |
| With the acceleration of the process of industrialization and urbanization, heavy metal pollution caused by wastewater discharge has became an increasingly prominent problem, and has proved to be one of the important content of water environment protection. This paper selected activated carbon and chestnut shell as adsorbent, researched their effects on Cu2+, Zn2+, Pb2+, Cd2+in wastewater at different times and temperatures. Results showed that adsorption quantity maximum of Cu2+happened at 0.5 h, Zn2+happened at 3 h, Pb2+and Cd2+happened at 1 h when activated carbon as adsorbent. Cu2+and Pb2+adsorption maximum happened at 1 h, Zn2+happened at 1 h, Cd2+happened at 0.5 h when chestnut shell as adsorbent. Regarding the influence of temperature, adsorbent for activated carbon or chestnut shell, the temperature had lit-tle effect on the rate of adsorption of Zn2+;when activated carbon as adsorbent, with temperature rise and the adsorption of Cu2+rate reduced and its effect was greater than chestnut shell. When temperature was 40℃,the adsorption rate of Pb2+and Cd2+were higher. The adsorption of chestnut shell was greater than activated carbon and Cd2+>Pb2+. |
| HTML
View Full Text
View/Add Comment Download reader |
| Close |
|
|
|
