Possibility of Removing Pb and Cd from Polluted Water by Modified Fly Ash | Zendy

Xi Chen | Zendy; G. Zhang | Zendy; Jingtian Li | Zendy; Puhui Ji | Zendy

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Possibility of Removing Pb and Cd from Polluted Water by Modified Fly Ash

Author(s) -

Xi Chen,

G. Zhang,

Jingtian Li,

Puhui Ji

Publication year - 2021

Publication title -

adsorption science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.682

H-Index - 36

eISSN - 2048-4038

pISSN - 0263-6174

DOI - 10.1155/2021/1336638

Subject(s) - adsorption , chemistry , fly ash , fourier transform infrared spectroscopy , sodium hydroxide , nuclear chemistry , hydroxide , microstructure , roasting , inorganic chemistry , chemical engineering , organic chemistry , engineering , crystallography

In this study, fly ash (FA) was modified by sodium hydroxide to prepare a new adsorption material (IP) and treat Pb2+- and Cd2+-polluted wastewater. The effect of preparation parameters (mass ratio of FA/NaOH and modification temperature) on IP adsorption performance was investigated. The results indicated that the IP4 showed the highest adsorption capacity prepared at the FA/NaOH mass ratio of 1 : 2 and the roasting temperature of 250°C. The IP4 was characterized by SEM, EDX, XRD, and FTIR analyses. The results showed that the surface morphology and microstructure of FA were significantly changed. Furthermore, in order to study the adsorption performance of Pb2+ and Cd2+ on IP4, the different initial concentrations of Pb2+ and Cd2+, pH, and contact time were analyzed, and the results indicated that IP4 has excellent adsorption capacity for heavy metals. In addition, kinetic model results demonstrated that the adsorption behavior of Pb2+ and Cd2+ on IP4 was better described by a pseudo-second-order model.

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