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| A review on phthalates removal using adsorption in aqueous environments |
| Received:November 22, 2017 |
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| KeyWord:adsorption;phthalate esters;aqueous environment;research advances |
| Author Name | Affiliation | E-mail | | LI Tian-cui | State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
University of Chinese Academy of Sciences, Beijing 100049, China | | | WANG Fei-hua | State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China | | | LIANG Wei | State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China | wliang@ihb.ac.cn |
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| Abstract: |
| Phthalate esters(PAEs)are widely-used plasticizers added to plastic products, rubber materials, medical implements, and toys to improve plasticity. Over the last decades, the occurrence of PAEs in drinking water, surface water, and ground water is largely due to wastewater discharge, dry and wet deposition, and leachates from plastic waste. PAE-contaminated water has been linked to teratogenesis, mutagenicity and endocrine disruption in the reproduction system of fish and mammals, and has known carcinogenic effects. This work presents a review of current and future adsorptive materials used for phthalate removal from aquatic environments. Adsorbents include activated carbon and its derivatives, chitosan and modified chitosan, biochar, clay minerals, polymer resin, membrane, nanomaterials, molecular imprinted polymers(MIPs), as well as other emerging materials. Additionally, adsorbent efficiency, adsorption mechanisms, and costs have been summarized; generally, adsorption capacity increases with PAE hydrophobicity for most adsorbents. Langmuir and Freundlich's isotherm models are useful in describing adsorption data. Adsorption processes can be attributed to hydrophobic interaction, hydrogen bonding, electrostatic interaction, π-π stacking, and pore filling. Moreover, research advances suggest that modified chitosan, clay mineral and biochar of activated sludge and bacteria are promising adsorbents as they are low cost, environmentally friendly, and highly efficient. |
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