文档介绍：
吸附剂载银后对萘的吸附行为研究#
段林,王方*
(南开大学环境科学与工程学院,教育部环境污染过程与基准重点实验室,天津市城市生态
5
10
环境修复与污染防治重点实验室,天津,300071)
摘要:应用批量平衡法研究了附着银离子后的常规水处理吸附剂对萘的吸附行为。结果表明:
沸石、二氧化硅附着银离子后对萘的吸附影响甚微,活性炭附着银离子后对萘的吸附降低,
而 Amberlyst 15 阳离子交换树脂附着银离子后对萘的吸附增强。吸附剂附着银离子后对萘的
吸附容量表现出了的不同影响趋势,这可能与吸附剂的表面性质和结构存在一定的内在联
系,其中附着的银离子不仅能改变吸附剂的表面疏水性和内部孔隙结构,而且还能与萘产生
阳离子-π键络合作用和路易斯酸碱对作用进而影响到萘的吸附。实验结果可以为弄清银离
子对多环芳烃在水处理工艺中的去除效果及对多环芳烃环境行为的影响提供基础理论依据。
关键词:环境科学、吸附、银离子、萘
中图分类号:X52
15
Adsorption of naphthalene by Ag ions-exchanged sorbents
DUAN Lin, WANG Fang
(College of Environmental Sciences and Engineering, Nankai University /Ministry of Education
Key Laboratory of Pollution Processes and Environmental Criteria /Tianjin Key Laboratory of
20
25
30
35
40
Environmental Remediation and Pollution Control, Tianjin 300071, China)
Abstract: In this paper, adsorption behaviors of naphthalene to conventional water treatment
sorbents before and after exchanged with silver ions were evaluated using batch experiments.
Results showed that, after exchanged with silver ions, zeolite and silica had little effect on the
sorption of naphthalene, and the sorption capacity of naphthalene to activated carbon was reduced,
whereas the sorption capacity of naphthalene to cation exchange resin Amberlyst 15was enhanced.
Different sorption trends observed with Ag ions exchanged sorbents might correlated with the
structure and surfac