REMEDIATION OF CR(VI) IN WATER USING BIOSYNTHESIZED PALLADIUM NANO-MATERIALS LOADED (SHEWANELLA ONEIDENSIS) MR-1

Andrey A. Ponomarev (), Tatyana S. Nurullina and Michail D. Zavatsky
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Andrey A. Ponomarev: Tyumen Industrial University, Tyumen 625000, Russia
Tatyana S. Nurullina: Tyumen Industrial University, Tyumen 625000, Russia
Michail D. Zavatsky: Tyumen Industrial University, Tyumen 625000, Russia

Water Conservation & Management (WCM), 2022, vol. 6, issue 2, 146-153

Abstract: “Green” synthesis is attracted considerable interest in materials science as a reliable, durable, and environmentally friendly approach to fabricating a wide range of nanoparticles such as metal oxide. Green production of metal nanoparticles was used to host a variety of biological components (such as fungi, algae, plant extracts bacteria etc.). Shewanella oneidensis MR-1 was employed in this biosynthetic investigation of palladium nanoparticles (Bio-Pd) to produce Cr (VI) under aerobic circumstances. By adjusting the ratio of microbial biomass to palladium precursors, it was possible to control the distribution and size of Bio-Pd. The Pd ratio had the smallest average particle size at 6.33 1.69 nm. Additionally, it has a formic acid oxidation electrocatalytic potential of -0.132 V, which is 0.158 V smaller than that of commercial Pd/C (5%). The entire catalytic reduction of a 200 mg/L Cr (VI) solution could be achieved by the tiny, uniformly distributed extracellular Bio-Pd within 10 minutes, but commercially available Pd/C (5%) required at least 45 minutes. Over five cycles, the Bio-Pd material offers a high decrease rate. Microbes have a substantial effect on the entire process of effectively reducing Cr (VI), dispersing palladium nanoparticles, and adsorbing Cr (III). The findings of this study will serve as a guide for the advancement of effective and environmentally acceptable bio-Pd catalysts for pollution control in straightforward and reasonable situations.

Keywords: Water treatment; Shewanella oneidensis; Bioreduction; Hexavalent chromium; Palladium nanoparticle (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnwcm:v:6:y:2022:i:2:p:146-153

DOI: 10.26480/wcm.02.2022.146.153

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