title: Insight into the adsorption of PPCPs by porous adsorbents: Effect of the properties of adsorbents and adsorbates.
abstract: Adsorption is an efficient method for removal of pharmaceuticals and personal care products (PPCPs). Magnetic resins are efficient adsorbents for water treatment and exhibit potential for PPCP removal. In this study, the magnetic hypercrosslinked resin Q100 was used for adsorption of PPCPs. The adsorption behavior of this resin was compared with those of two activated carbons, namely, Norit and F400D. Norit exhibited the fastest adsorption kinetics, followed by Q100. Norit featured a honeycomb shape and long-range ordered pore channels, which facilitated the diffusion of PPCPs. Moreover, the large average pore size of Q100 reduced diffusion resistance. The adsorbed amounts of 11 PPCPs on the three adsorbents increased with increasing adsorbate hydrophobicity. For Q100, a significant linear correlation was observed between the adsorption performance for PPCPs and hydrophobicity (logD value) of adsorbates (R(2) = 0.8951); as such, PPCPs with high logD values (>1.69) could be efficiently removed. Compared with those of Norit and F400D, the adsorption performance of Q100 was less affected by humic acid because of the dominant hydrophobic interaction. Furthermore, Q100 showed improved regeneration performance, which renders it promising for PPCP removal in practical applications.
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; Jiangsu Province Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, PR China.
authors.forename: Zengyin
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
authors.forename: Jiawen
authors.initials: J
authors.lastname: Xie
authors.affiliation: Jiangsu Province Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, PR China.
authors.forename: Mancheng
authors.initials: M
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China. Electronic address: zhouqing@nju.edu.cn.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D003358:Cosmetics / Q000737:chemistry*; D006812:Humic Substances; D057927:Hydrophobic and Hydrophilic Interactions; D007700:Kinetics; D060328:Magnetic Phenomena; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D003358:Cosmetics; D006812:Humic Substances; D058185:Magnetite Nanoparticles; D004364:Pharmaceutical Preparations; D011108:Polymers; D014874:Water Pollutants, Chemical; D002606:Charcoal
keywords: Activated carbon; Hydrophobicity; Kinetics; Magnetic resin; Recyclability