Effect of Manganese Coating on the Sorption Performance of Pyrolusite for Lead in Aqueous Conditions

Fransiscus, Yunus and Effendy, Carolyn V. and Wijaya, Herman S. (2020) Effect of Manganese Coating on the Sorption Performance of Pyrolusite for Lead in Aqueous Conditions. IOP Conference Series: Materials Science and Engineering, 742 (012005). pp. 1-6. ISSN 1757-899X

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Official URL / DOI: https://iopscience.iop.org/issue/1757-899X/742/1

Abstract

A process to modify the property of pyrolusite, a natural form of manganese dioxide, was done in order to get a better adsorption performance. Modification was executed by coating the mineral with manganese solution (KMnO4, 0.05 M). Characterization analysis with XRF described significant change on Mn and MnO components, which was higher on the coated material compared to the ore. Meanwhile, although has not perfectly homogenous, it was identified that the distribution of pore diameter reduced from 2.23 – 4.08 µm to 0.65 – 1.07 µm. Another important result from this study was that pHpzc of pyrolusite shifted from 4.2 to 1.9, giving a wider range on pH working solution for the adsorption performance. Manganese coated pyrolusite performed very well in 4 different pH conditions, providing overall removal efficiency above 90% for Lead. Furthermore, from a series of adsorption batch experiments it has been known that the adsorption mechanism of modified pyrolusite for Lead was better explained with Langmuir equation and the kinetics reaction was best modelled by pseudo-second order.

Item Type: Article
Subjects: Q Science > QD Chemistry
T Technology > TD Environmental technology. Sanitary engineering
T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Yunus Fransiscus 61118
Date Deposited: 09 May 2020 09:42
Last Modified: 09 Jun 2020 01:04
URI: http://repository.ubaya.ac.id/id/eprint/37746

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