首页|Synthesis of plant-based biogenic jarosite nanoparticles using Azadirachta indica and Eucalyptus gunni leaf extracts and its application in Fenton degradation of dicamba

Synthesis of plant-based biogenic jarosite nanoparticles using Azadirachta indica and Eucalyptus gunni leaf extracts and its application in Fenton degradation of dicamba

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Bio-jarosite,an iron mineral synthesized biologically using bacteria,is a substitute for iron catalysts in the Fenton oxidation of organic pollutants.Iron nanocatalysts have been widely used as Fenton catalysts because they have a larger surface area than ordinary catalysts,are highly recyclable,and can be treated efficiently.This study aimed to explore the catalytic properties of bio-jarosite iron nanoparticles syn-thesized with green methods using two distinct plant species:Azadirachta indica and Eucalyptus gunni.The focus was on the degradation of dicamba via Fenton oxidation.The synthesized nanoparticles exhibited different particle size,shape,surface area,and chemical composition characteristics.Both particles were effective in removing dicamba,with removal efficiencies of 96.8％for A.indica bio-jarosite iron nano-particles(ABFeNPs)and 93.0％for E.gunni bio-jarosite iron nanoparticles(EBFeNPs)within 120 min of treatment.Increasing the catalyst dosage by 0.1 g/L resulted in 7.6％and 43.0％increases in the dicamba removal efficiency for EBFeNPs and ABFeNPs with rate constants of 0.025 min-1 and 0.023 min-1,respectively,confirming their catalytic roles.Additionally,the high efficiency of both catalysts was demonstrated through five consecutive cycles of linear pseudo-first-order Fenton oxidation reactions.

Acidithiobacillus ferrooxidansFenton processJarositeHerbicideDicambaAzadirachta indicaEucalyptus gunni

Shivaswamy Bhaskar、Basavaraju Manu、Marikunte Yanjarappa Sreenivasa、Arlapadavu Manoj

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Department of Civil Engineering,National Institute of Technology Calicut,Kozhikode 673601,Kerala,India

Department of Civil Engineering,National Institute of Technology Karnataka,Surathkal,P.O.Srinivasnagar,Mangalore 575025,India

Department of Studies in Microbiology,University of Mysore,Mysuru 570006,Karnataka,India

Department of Civil Engineering,Siddaganga Institute of Technology,Tumkur 572103,India

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2024

10.1016/j.wse.2023.08.003

水科学与水工程
河海大学

水科学与水工程

CSTPCDEI
影响因子：0.432
ISSN：1674-2370
年,卷(期)：2024.17(2)