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The conditions affecting oil removal rate and floc rising time of DTC were studied using simulated oily wastewater. Furthermore, the effects of the molecular structure of DTC on oil removal efficiency, floc morphology, floc rising time, and floc adhesion were investigated. When the conditions were optimal, the oil removal efficiency of DTC synthesized from polyethylene polyamine was 95.14%, which was higher than other DTCs. Meanwhile, the ferrous ion was the most suitable chelating metal ion for DTC than other transition metal ions. The increase of amino groups in the initiators improves the oil removal efficiency of DTC, while the linear structural DTC exhibits a low oil removal efficiency due to a lack of network structural flocs. The introduction of polyether structure helps reduce the volume of the flocs and make them compact, but it also increases the adhesion of the floc on the metal surface. The introduction of bisphenol A phenol amino resin structure induces the generation of the flocs in oil wastewater and improves the oil removal efficiency.<\/jats:p>","DOI":"10.2166\/wst.2022.221","type":"journal-article","created":{"date-parts":[[2022,7,21]],"date-time":"2022-07-21T09:56:43Z","timestamp":1658397403000},"page":"467-481","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":4,"title":["Relationship between the molecular structure of different dithiocarbamates and their oil removal performance"],"prefix":"10.2166","volume":"86","author":[{"given":"Ziyang","family":"Hao","sequence":"first","affiliation":[{"name":"College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. 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