Modified alginate beads as biosensor and biosorbent for simultaneous detection and removal of cobalt ions from aqueous solution | Zendy

Zhuang Shuting | Zendy; Wang Jianlong | Zendy

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Modified alginate beads as biosensor and biosorbent for simultaneous detection and removal of cobalt ions from aqueous solution

Author(s) -

Zhuang Shuting,

Wang Jianlong

Publication year - 2018

Publication title -

environmental progress and sustainable energy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.495

H-Index - 66

eISSN - 1944-7450

pISSN - 1944-7442

DOI - 10.1002/ep.12666

Subject(s) - aqueous solution , cobalt , adsorption , biosensor , chemistry , freundlich equation , selectivity , nuclear chemistry , bead , covalent bond , polymer , inorganic chemistry , chromatography , materials science , organic chemistry , catalysis , biochemistry , composite material

A novel biomaterial was prepared to simultaneously detect and remove cobalt ions from aqueous solution by modifying alginate (AG) polymer with a high selectivity and sensitive indicator for Co 2+ , 4‐(5‐chloro‐2‐pyridylazo)‐1,3‐phenylenediamine (5‐Cl‐PADAB). The analysis of FT‐IR spectra proved that 5‐Cl‐PADAB was covalently connected to AG. The modified AG beads can effectively adsorb Co 2+ and indicate the presence of Co 2+ in aqueous solution. After adsorption of Co 2+ , the color of the modified AG beads changed from yellow to pink, resulting in a noticeable change, which can be observed by naked eyes. The adsorption of Co 2+ by the modified AG beads can be described by pseudo second‐order kinetic model and the Freundlich isotherm model. The AG bead modified with an indicator is a promising biosensor and biosorbent for simultaneous detection and removal of cobalt ions from aqueous solution. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 260–266, 2018

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