Adsorptive removal of organophosphate flame retardants from water by non-ionic resins
Adsorptive removal of organophosphate flame retardants from water by non-ionic resins
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非离子树脂吸附去除水中有机磷酸酯阻燃剂
DOI：
10.1016/j.cej.2018.08.002
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发表时间：
2018-12
影响因子：
15.1
通讯作者：
Yu Gang
中科院分区：
文献类型：
--
作者：
Wang Wei;Deng Shubo;Li Danyang;Ren Lu;Wang Bin;Huang Jun;Wang Yujue;Yu Gang
近年来，有机磷阻燃剂在水生环境中的出现引起了全球的关注。通过研究吸附动力学和等温线、溶液pH、离子强度和腐植酸（HA）的影响、吸附机理和回用等因素，首次探讨了XAD4和XAD7hP树脂对水中5种典型OPFRs的吸附可行性。相对亲水的XAD7hP树脂比疏水树脂XAD4更快达到吸附平衡，颗粒内扩散控制吸附限制了吸附速率。根据Langmuir拟合，XAD4对5种OPFRs的最大吸附量为0.786 ~ 2.25 mmol/g，高于XAD7hP的0.74 ~ 1.65 mmol/g，且越疏水的OPFRs在树脂上的吸附量越高。溶液pH对OPFRs在XAD4上的吸附影响不大，但对OPFRs在XAD7hP上的吸附有影响，可能是由于氢桥接和静电斥力的作用。共存的HA不仅从水中吸附OPFRs，而且与OPFRs竞争XAD4上的吸附位点。进一步研究表明，实际城市污水中共存物质对XAD4对OPFRs的去除有显著影响，而XAD7hP对OPFRs的去除影响不大。此外，废树脂被乙醇成功地再生，并且在几乎没有吸附能力损失的情况下至少重复使用三次。该研究表明，合适的树脂在水或废水处理中具有良好的应用前景。
Occurrence of organophosphorus flame retardants (OPFRs) in aquatic environments has caused global concern recently. For the first time, the feasibility of using resins (XAD4 and XAD7hP) to remove five typical OPFRs from water was investigated by studying the adsorption kinetics and isotherms, the effects of solution pH, ionic strength and humic acid (HA), as well as the adsorption mechanism and reuse. The relatively hydrophilic resin XAD7hP reached adsorption equilibrium faster than the hydrophobic resin XAD4, and the intraparticle diffusioncontrolled adsorption limited the adsorption rate. The XAD4 showed the maximum adsorption capacity of 0.786-2.25 mmol/g for the five OPFRs according to the Langmuir fitting, higher than 0.74-1.65 mmol/g by XAD7hP, and the more hydrophobic OPFRs exhibited the higher adsorption capacity on the resins. Solution pH had little impact on the adsorption of OPFRs on XAD4 but displayed effect on the adsorption of OPFRs on XAD7hP due to the possible hydrogen-bridging and the electrostatic repulsion. The co-existing HA not only adsorbed OPFRs from water but also competed with OPFRs for adsorption sites on XAD4. Further study showed that the co-existing matters in the actual municipal wastewater had a significant influence on the removal of OPFRs by XAD4, while little influence on the OPFRs removal by XAD7hP was found. Additionally, the spent resins were successfully regenerated by ethanol and reused at least three times with little loss of adsorption capacity. This work indicates that the appropriate resins have a promising application in the water or wastewater treatment for OPFRs removal.
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影响因子：
11.4
作者：
Xilong Wang;L. Shu;Yanqi Wang;Bingbing Xu;Yingchen Bai;S. Tao;B. Xing
通讯作者：
Xilong Wang;L. Shu;Yanqi Wang;Bingbing Xu;Yingchen Bai;S. Tao;B. Xing
影响因子：
4.1
作者：
Long Pang;Jing-fu Liu;Yongguang Yin;Mohai Shen
通讯作者：
Long Pang;Jing-fu Liu;Yongguang Yin;Mohai Shen
影响因子：
9.8
作者：
Clukey, Katharine E.;Lepczyk, Christopher A.;Lynch, Jennifer M.
通讯作者：
Lynch, Jennifer M.
影响因子：
15.1
作者：
Danna Shan;S. Deng;Conghui He;Jin Li;Hubian Wang;Chengxu Jiang;Gang Yu;M. Wiesner
通讯作者：
Danna Shan;S. Deng;Conghui He;Jin Li;Hubian Wang;Chengxu Jiang;Gang Yu;M. Wiesner
DOI：
10.1039/b921910b
发表时间：
2010-04
期刊：
Journal of environmental monitoring : JEM
影响因子：
--
作者：
Anneli Sundkvist;U. Olofsson;P. Haglund
通讯作者：
Anneli Sundkvist;U. Olofsson;P. Haglund