Optimization and evaluation of reduced graphene oxide hydrogel composite as a demulsifier for heavy crude oil-in-water emulsion

作     者：Kin Kit Fong Inn Shi Tan Henry Chee Yew Foo Man Kee Lam Adrian Chiong Yuh Tiong Steven Lim Kin Kit Fong;Inn Shi Tan;Henry Chee Yew Foo;Man Kee Lam;Adrian Chiong Yuh Tiong;Steven Lim

作者机构：Department of Petroleum EngineeringFaculty of Engineering and ScienceCurtin UniversityCDT 25098009 MiriSarawakMalaysia Department of Chemical EngineeringFaculty of Engineering and ScienceCurtin UniversityMiri 98009Malaysia Chemical Engineering DepartmentUniversiti Teknologi PETRONASSeri Iskandar 32610Malaysia HICoE-Centre for Biofuel and Biochemical ResearchInstitute of Self-Sustainable BuildingUniversiti Teknologi PETRONASSeri Iskandar 32610Malaysia Department of Chemical EngineeringLee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanKajang 43000Malaysia Centre for Photonics and Advanced Materials ResearchUniversiti Tunku Abdul RahmanKajang 43000Malaysia 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第5期

页      面：297-305页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：The authors would like to acknowledge for the financial supports given by Fundamental Research Grant Scheme (FRGS/1/2019/TK02/CURTIN/03/2) from Ministry of Higher Education (MOHE) Malaysia 

主　　题：Graphene oxide κ-Carrageenan Adsorbents Demulsification Composites Waste water 

摘      要：The rising production of produced water from oilfields had been proven to bring detrimental environmental *** this study,an efficient,recyclable,and environmental-friendly reduced graphene oxide immobilizedκ-Carrageenan hydrogel composite(κCaGO)was fabricated as an alternative sorbent for crude oil-in-water ***(PEI)was employed to form a stable hydrogel *** conditions for the immobilization of graphene oxide(GO)on PEI-modifiedκ-Carrageenan(κC)beads were optimized *** immobilization yield of 77%was attained at 2%PEI,2 h immobilization activation time,and pH ***,the synthesizedκCaGO is capable of demulsification with an average demulsification efficiency of 70%.It was found that the demulsification efficiency increases with salinity andκCaGO dosage,and it deteriorates under alkaline *** phenomena can be attributed to the interfacial interactions betweenκCaGO and the ***,theκCaGO can be recycled to use for up to six cycles without significant leaching and *** such,the synthesizedκCaGO could be further developed as a potential sorbent substitute for the separation of crude oil from produced water.