Fe(II)-MSA functionalized Au nanoparticle on natural zeolites as effective reducing agent for Cr(VI) ions

Yoki Yulizar, Grandprix T M Kadja, Aditya Yudiana

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Hexavalent chromium (Cr(VI)) ions are typical species found in wastewater released from various industries, e.g. electroplating, leather tanning, and canning industries, which causes serious risks to the environment. Therefore, Cr(VI) ions should be reduced into a less-toxic species, i.e. Cr(III) [1, 2]. This present investigation deals with the preparation of Indonesian natural zeolite (INZ) modified by Au nanoparticles and Fe(II)-mercaptosuccinic acid (MSA) complexes as reducing agents for Cr(VI) to Cr(III) ions. These materials were characterized using XRD, SEM-EDS, UV-Vis DRS, and FTIR. It was revealed that Au nanoparticles play a role as bridging agent of INZ and Fe(II)-MSA. The purpose of this modification is to provide flexible and easily accessible reducing sites, i.e. Fe(II) in heterogeneous system. Therefore, the reducing materials can be easily separated at the end of reaction. The reduction of Cr(VI) ions was indicated by the decay of absorbance at λmax of 350 nm based on the measurement using UV-Vis Spectrophotometer. The prepared materials could reduce 1.1×10-4 M Cr(VI) up to 90% at pH of 4.7 for 20 minutes. In this system, Cr(VI) reduction followed a first order reaction rate with the apparent rate constant, kapp, of 0.095 min-1.

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2015, ISCPMS 2015
Subtitle of host publicationProceedings of the 1st International Symposium on Current Progress in Mathematics and Sciences
EditorsTerry Mart, Djoko Triyono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413764
DOIs
Publication statusPublished - 19 Apr 2016
Event1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015 - Depok, Indonesia
Duration: 3 Nov 20154 Nov 2015

Publication series

NameAIP Conference Proceedings
Volume1729
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015
Country/TerritoryIndonesia
CityDepok
Period3/11/154/11/15

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