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Title: A study on using modified Corchorus capsularis powder to remove macrolide group from water
Authors: Le, Van Trong
Nguyen, Thi Thanh Hang
Do, Quang Huy
Nguyen, Manh Khai
Tran, Van Son
Keywords: Corchorus capsularis powder
Issue Date: 2019
Series/Report no.: Vietnam Journal of Chemistry;No 57 .- Page.234-239
Abstract: This study grafted monomer acryiamide onto cellulose (from Corchorus capsularis powder) using trigger system including sodium hydrosulfite (SB) and ammonium peroxodisulfate (APS) to remove the macrolide group (Spiramycin - SPI, Erythromycin - ERY, Tylosin - TYL) from water. Corchorus capsuanris powder was pre-treated by sodium hydroxide 15 % (COC), then modified by a mixture of sodium bisulfite (SB) 0.15 mol/L and ammonium peroxydisulfate (APS) 0.2 mol/L. The material was grafted with monoacrylamide (AM) at ratio AM/COC = 1/1 in 2.5 hours at 60°C. The adsorbent was characterized by FTIR and SEM. After modification with AM, the adsorbent (BTA) was used to adsorb SPI, ERY, and TYL from water. Effects of pH, temperature and adsorbent dose to adsorption performance were studied. Concentration of macrolides were determined by LC/MS-MS. Maximum adsorption capacities of SPI, ERY, TYL following Langmuir isotherm model were 50.00, 33.33, 25.00 mg/g, respectively. The adsorption constant Kp of SPI, ERY, and TYL following the Freundlich isotherm model were 5383.53, 1082.79 and 1004.76, respectively. The n constant ranged from 1 to 10. The Optimal adsorption condition of SPI, ERY, and TYL to BTA material were fixed at 30°C, pH 7.
ISSN: 2525-2321
Appears in Collections:Vietnam Journal of Chemistry

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