Trimethylamine Adsorption Mechanism on Activated Carbon and Removal in Water and Oyster Proteolytic Solution  

作　　者：CHEN Deke WAN Peng CAI Bingna YE Ziqing CHEN Hua CHEN Xin SUN Huili PAN Jianyu 

机构地区：[1]Key Laboratory of Tropical Marine Bio-Resource and Ecology/Guangdong Key Laboratory of Marine Meteria Medica,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China [3]Innovation Academy of South China Sea Ecology and Environmental Engineering(ISEE),Chinese Academy of Sciences,Guangzhou 510000,China [4]School of Environment and Chemical Engineering,Foshan University,Foshan 528000,China [5]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Ocean University of China》2021年第6期1578-1586,共9页中国海洋大学学报（英文版）

基　　金：the National Key R&D Program of China(No.2018YFC0311202);the Key-Area Research and Development Program of Guang-dong Province(No.2020B1111030004);the Science and Technology Program of Guangzhou,China(Nos.201804010364 and 201804010321);the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(No.GML2019ZD0406);the National Key R&D Program of China(No.2018YFC0311202);the Natural Science Foun-dation of Guangdong Province,China(Nos.2018A030313088,2018A030313626);the Academician Work-station Foundation for Young Scientists of Chinese Aca-demy of Sciences Guangzhou Branch(No.20180313).

摘　　要：In this study,seven coal-based activated carbons(ACs)were adopted to remove trimethylamine(TMA)in an aqueous solution as environmentally friendly and harmless adsorbents.The results showed that columnar AC(CAC)had a clear scale and honeycomb structures with few fragments and micropores,contributing to superior TMA removal capacity compared to granular AC(GAC)(71.67%for 6.0 mm CAC and 69.92%for 40–60 mesh GAC).In addition,the process of adsorption was accompanied by desorption,and the recommended absorbed time was 120–180 min.The short time to achieve equilibrium indicated that adsorption was kinetically controlled,and pseudo-second-order kinetics was more appropriate than pseudo-first-order kinetics in explaining the adsorption mechanism in both water and oyster enzymatic hydrolysate.The intraparticle diffusion model presented that the adsorption processes could be divided into three steps for GAC and two steps for CAC.The adsorption processes were consistent with the Freundlich model,indicating the existence of physisorption and chemisorption as multilayer adsorption.The results indicated that AC,especially CAC,has great potential for TMA elimination in aquatic product processing.

关 键 词：TRIMETHYLAMINE activated carbon adsorption mechanism OYSTER proteolytic solution 

分 类 号：X703[环境科学与工程—环境工程]