Structural investigation of raw clinoptilolite over the Pb2+ adsorption process from phosphoric acid

Physico-chemical methods are the most informative studies for natural zeolites. In the present study, zeolite derivative material called as clinoptilolite was employed for the purpose of adsorption. The lead ions (Pb2+) were investigated for removability from phosphoric acid (H3PO4) medium by clinop...

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Bibliographic Details
Published in:Journal of molecular structure 2019-05, Vol.1184, p.49-58
Main Authors: Kussainova, M. Zh, Chernyakovа, R.M., Jussipbekov, U.Z., Paşa, S.
Format: Article
Language:English
Subjects:
Adsorption
Clinoptilolite
Contaminated phosphoric acid
Pb2+ ions
Structural investigation
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Summary:Physico-chemical methods are the most informative studies for natural zeolites. In the present study, zeolite derivative material called as clinoptilolite was employed for the purpose of adsorption. The lead ions (Pb2+) were investigated for removability from phosphoric acid (H3PO4) medium by clinoptilolite. Many works including heavy metal adsorptions of zeolite material from aqueous medium have previously conducted by many researchers but the acid medium experiments haven't been studied yet. Accordingly, this put forth the novelty of work. The clinoptilolite was employed for purification of phosphoric acid from lead ions. The structure durability and reusability of clinoptilolite after acid treatment was also evaluated. The spectral data which were collected by FT-IR, TGA/DTA, SEM, BET, XRD, and ATM make it possible to obtain exact information about changing on clinoptilolite structure. Thus, the clinoptilolite species such as natural, acid-treated, and isolated after sorption were structurally investigated. And the Pb2+ cation sorption capability of clinoptilolite was discussed. It has demonstrated that clinoptilolite is a versatile material also for the purification of acid from heavy metal ions. [Display omitted] •Pb2+ removability was firstly investigated from phosphoric acid by clinoptilolite.•90% of adsorption results were recorded during the purification of phosphoric acid.•The effect of sorbent amount and H3PO4 concentrations (as %) was also explored.•Structure durability, stability and reusability of sorbent material were evaluated.•Structural analysis of clinoptilolite was analyzed by FTIR, SEM, TGA/DTA, XRD, ATM.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2019.02.012