title: Synthesis of porous starch xerogels modified with mercaptosuccinic acid to remove hazardous gardenia yellow.
abstract: Mercaptosuccinic acid (MSA) molecules were inserted into potato starch, leading to the breaking of intrinsic H-bonds within macromolecular chains of starch and the formation of intermolecular H-bonds between MSA and starch, which could be verified by Fourier transform infrared spectroscopy (FT-TR). MSA modified porous starch xerogels (PSX/MSA) were obtained after freeze-drying the MSA modified starch, and they were characterized by field emission scanning electron microscopy (FESEM), exhibiting the intriguing porous structure due to the separation of starch chains by MSA molecules. The PSX/MSA were then used as the adsorbents to remove gardenia yellow (GY), a natural colorant with genotoxicity. Due to the porous structure of PSX and the introduced carboxyl groups from MSA, the adsorption capacity of the PSX/MSA was much higher than that of the starch xerogels alone (SX). The adsorption behaviors of GY by the PSX/MSA fitted both the Freundlich isotherm model and the pseudo-second-order kinetic model, and the efficient adsorption of GY suggested that the PSX/MSA might be potential adsorbents for the removal of dyes from contaminated aquatic systems.
authors.affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Bao
authors.affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
authors.forename: Xinyi
authors.initials: X
authors.lastname: Zhu
authors.affiliation: School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Dai
authors.affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Tao
authors.affiliation: School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
authors.forename: Wenjie
authors.initials: W
authors.lastname: Liu
authors.affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. Electronic address: yzkongyong@126.com.
authors.forename: Yong
authors.initials: Y
authors.lastname: Kong
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000737:chemistry* / Q000633:toxicity; D032062:Gardenia / Q000737:chemistry* / Q000633:toxicity; D006860:Hydrogen Bonding / Q000187:drug effects; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010936:Plant Extracts / Q000737:chemistry* / Q000633:toxicity; D016062:Porosity; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry* / Q000494:pharmacology; D013870:Thiomalates / Q000737:chemistry* / Q000494:pharmacology; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity
chemical_list: D004396:Coloring Agents; D010936:Plant Extracts; D013870:Thiomalates; D014874:Water Pollutants, Chemical; D013213:Starch; C046062:2-thiomalic acid; C057653:gardenia yellow
keywords: Gardenia yellow adsorption; Mercaptosuccinic acid; Porous starch xerogels