Authors: Mr Sanghyun Jeong, Dr Tien Vinh Nguyen, Dr Saravanamuthu Vigneswaran*
Presenter: Mr Sanghyun Jeong, Student, University of Technology, Sydney
Presentation: Pre and Post-Treatment Systems Part III, Wednesday, September 7, 11:00 – 11:30 am, M+1+2+3
This study investigated the effect of powder activated carbon (PAC) dosed in a submerged membrane reactor in removing organic matter from seawater. The maximum adsorption capacity of PAC for organic compounds in seawater was up to 23.1 mg DOC/g of PAC. The PAC adsorption equilibrium results with seawater fitted well with Freundlich and Sips isotherms. More than 86% of organic matter was removed after a contact period of 8 hours with the 1.5g/L PAC. Ho model described well the adsorption kinetics of organic matter on PAC. The addition of PAC into submerged microfiltration reactor not only improved critical flux from 20 L/m2.h to 40 L/m2.h but also helped reduce the transmembrane pressure (TMP) of the system. The analyses of fractionation of organic matter showed that PAC was able to remove most of hydrophobic compounds (more than 96%) and a significant amount of hydrophilic compounds (78%).
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