Organic-coated nanoparticulate zero valent iron for remediation of chemical oxygen demand (COD) and dissolved metals from tropical landfill leachate

The use of nanoparticulate zero valent iron (NZVI) in the treatment of inorganic contaminants in landfill leachate and polluted plumes has been the subject of many studies, especially in temperate, developed countries. However, NZVI’s potential for reduction of chemical oxygen demand (COD) and treat...

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Veröffentlicht in:Environmental science and pollution research international 2014, Vol.21 (11), p.7075-7087
Hauptverfasser: Wijesekara, S. S. R. M. D. H. R, Basnayake, B. F. A, Vithanage, Meththika
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container_issue 11
container_start_page 7075
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creator Wijesekara, S. S. R. M. D. H. R
Basnayake, B. F. A
Vithanage, Meththika
description The use of nanoparticulate zero valent iron (NZVI) in the treatment of inorganic contaminants in landfill leachate and polluted plumes has been the subject of many studies, especially in temperate, developed countries. However, NZVI’s potential for reduction of chemical oxygen demand (COD) and treatment of metal ion mixtures has not been explored in detail. We investigated the efficiency of NZVI synthesized in the presence of starch, mercaptoacetic, mercaptosuccinic, or mercaptopropenoic acid for the reduction of COD, nutrients, and metal ions from landfill leachate in tropical Sri Lanka. Synthesized NZVI were characterized with X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy, scanning electron microscopy (SEM), thermal gravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and Brunauer–Emmett–Teller. Of the samples tested, Starch-NZVI (S-NZVI) and mercaptoacetic-NZVI (MA-NZVI) performed well for treatment both COD and metal mixture. The removal percentages for COD, nitrate-nitrogen, and phosphate from S-NZVI were 50, 88, and 99 %, respectively. Heavy metal removal was higher in S-NZVI (>95 %) than others. MA-NZVI, its oxidation products, and functional groups of its coating showed the maximum removal amounts for both Cu (56.27 mg g⁻¹) and Zn (28.38 mg g⁻¹). All mercapto-NZVI showed well-stabilized nature under FTIR and XRD investigations. Therefore, we suggest mercapto acids as better agents to enhance the air stability for NZVI since chemically bonded thiol and carbonyl groups actively participation for stabilization process.
doi_str_mv 10.1007/s11356-014-2625-1
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S. R. M. D. H. R ; Basnayake, B. F. A ; Vithanage, Meththika</creator><creatorcontrib>Wijesekara, S. S. R. M. D. H. R ; Basnayake, B. F. A ; Vithanage, Meththika</creatorcontrib><description>The use of nanoparticulate zero valent iron (NZVI) in the treatment of inorganic contaminants in landfill leachate and polluted plumes has been the subject of many studies, especially in temperate, developed countries. However, NZVI’s potential for reduction of chemical oxygen demand (COD) and treatment of metal ion mixtures has not been explored in detail. We investigated the efficiency of NZVI synthesized in the presence of starch, mercaptoacetic, mercaptosuccinic, or mercaptopropenoic acid for the reduction of COD, nutrients, and metal ions from landfill leachate in tropical Sri Lanka. 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S. R. M. D. H. R</creatorcontrib><creatorcontrib>Basnayake, B. F. A</creatorcontrib><creatorcontrib>Vithanage, Meththika</creatorcontrib><title>Organic-coated nanoparticulate zero valent iron for remediation of chemical oxygen demand (COD) and dissolved metals from tropical landfill leachate</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>The use of nanoparticulate zero valent iron (NZVI) in the treatment of inorganic contaminants in landfill leachate and polluted plumes has been the subject of many studies, especially in temperate, developed countries. However, NZVI’s potential for reduction of chemical oxygen demand (COD) and treatment of metal ion mixtures has not been explored in detail. We investigated the efficiency of NZVI synthesized in the presence of starch, mercaptoacetic, mercaptosuccinic, or mercaptopropenoic acid for the reduction of COD, nutrients, and metal ions from landfill leachate in tropical Sri Lanka. Synthesized NZVI were characterized with X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy, scanning electron microscopy (SEM), thermal gravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and Brunauer–Emmett–Teller. Of the samples tested, Starch-NZVI (S-NZVI) and mercaptoacetic-NZVI (MA-NZVI) performed well for treatment both COD and metal mixture. The removal percentages for COD, nitrate-nitrogen, and phosphate from S-NZVI were 50, 88, and 99 %, respectively. Heavy metal removal was higher in S-NZVI (&gt;95 %) than others. MA-NZVI, its oxidation products, and functional groups of its coating showed the maximum removal amounts for both Cu (56.27 mg g⁻¹) and Zn (28.38 mg g⁻¹). 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Therefore, we suggest mercapto acids as better agents to enhance the air stability for NZVI since chemically bonded thiol and carbonyl groups actively participation for stabilization process.</description><subject>Acids</subject><subject>air</subject><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Biological Oxygen Demand Analysis</subject><subject>Carbonyl compounds</subject><subject>Cellulose acetate</subject><subject>Chemical oxygen demand</subject><subject>coatings</subject><subject>Contaminants</subject><subject>Contamination</subject><subject>copper</subject><subject>Developed countries</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental cleanup</subject><subject>Environmental Health</subject><subject>Environmental Restoration and Remediation - methods</subject><subject>Environmental science</subject><subject>Environmental studies</subject><subject>Experiments</subject><subject>Fourier analysis</subject><subject>Fourier transform infrared spectroscopy</subject><subject>Fourier transforms</subject><subject>Gravimetric analysis</subject><subject>Heavy metals</subject><subject>Hydrocarbons</subject><subject>Infrared spectroscopy</subject><subject>Investigations</subject><subject>iron</subject><subject>Iron - chemistry</subject><subject>Landfill</subject><subject>Landfills</subject><subject>Leachates</subject><subject>Metal ions</subject><subject>Metal Nanoparticles - chemistry</subject><subject>Metals</subject><subject>Metals, Heavy - analysis</subject><subject>Microscopy</subject><subject>Microscopy, Electron, Scanning</subject><subject>Microscopy, Electron, Transmission</subject><subject>Nanoparticles</subject><subject>Nanostructure</subject><subject>nitrate nitrogen</subject><subject>Nitrates</subject><subject>Nitrates - analysis</subject><subject>nutrients</subject><subject>Oxidation</subject><subject>Oxidation-Reduction</subject><subject>Oxygen demand</subject><subject>Pesticides</subject><subject>Phosphates - analysis</subject><subject>Photoelectron Spectroscopy</subject><subject>Plumes</subject><subject>Pollutants</subject><subject>Reduction</subject><subject>remediation</subject><subject>Research Article</subject><subject>Scanning electron microscopy</subject><subject>Spectrum analysis</subject><subject>Sri Lanka</subject><subject>Starch</subject><subject>Thioglycolates</subject><subject>Thiomalates</subject><subject>Transmission electron microscopy</subject><subject>Tropical Climate</subject><subject>Waste disposal sites</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water Pollution Control</subject><subject>X-Ray Diffraction</subject><subject>X-ray photoelectron spectroscopy</subject><subject>zinc</subject><issn>0944-1344</issn><issn>1614-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqFkc9u1DAQxi0EokvhAbiAJS7lEBg7Tpwcq-WvVGkP0LPltcdbV0m82NmK8hw8MLOkIMQBTh7bv-8bjz_Gngp4JQD06yJE3bQVCFXJVjaVuMdWoqWdVn1_n62gV6oStVIn7FEp1wASeqkfshOpGhK23Yp93-SdnaKrXLIzej7ZKe1tnqM7DHTAv2FO_MYOOM085jTxkDLPOKKPdo60T4G7KxyjswNPX293OHGPo508P1tv3rzkx8rHUtJwQ_YjznYoPOQ08jmn_U_ZQEyIAxVo3RV1fcweBMLwyd16yi7fvf28_lBdbN5_XJ9fVI7mmyuFdWilc6JufbcVIbTYY9jWLoDueou6UcI7-igEte2VblwX0INXrXbeNrI-ZWeL7z6nLwcssxljcTjQgzAdihFaQy2lBP1_tKlVp2oNHaEv_kKv0yFPNAhRstG6AwVEiYVyOZWSMZh9jqPNt0aAOaZrlnQNpWuO6RpBmmd3zoctJfBb8StOAuQCFLqadpj_aP0P1-eLKNhk7C7HYi4_SQIABNBUXf0DIwG6cg</recordid><startdate>2014</startdate><enddate>2014</enddate><creator>Wijesekara, S. 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S. R. M. D. H. R</au><au>Basnayake, B. F. A</au><au>Vithanage, Meththika</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Organic-coated nanoparticulate zero valent iron for remediation of chemical oxygen demand (COD) and dissolved metals from tropical landfill leachate</atitle><jtitle>Environmental science and pollution research international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2014</date><risdate>2014</risdate><volume>21</volume><issue>11</issue><spage>7075</spage><epage>7087</epage><pages>7075-7087</pages><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>The use of nanoparticulate zero valent iron (NZVI) in the treatment of inorganic contaminants in landfill leachate and polluted plumes has been the subject of many studies, especially in temperate, developed countries. However, NZVI’s potential for reduction of chemical oxygen demand (COD) and treatment of metal ion mixtures has not been explored in detail. We investigated the efficiency of NZVI synthesized in the presence of starch, mercaptoacetic, mercaptosuccinic, or mercaptopropenoic acid for the reduction of COD, nutrients, and metal ions from landfill leachate in tropical Sri Lanka. Synthesized NZVI were characterized with X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy, scanning electron microscopy (SEM), thermal gravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and Brunauer–Emmett–Teller. Of the samples tested, Starch-NZVI (S-NZVI) and mercaptoacetic-NZVI (MA-NZVI) performed well for treatment both COD and metal mixture. The removal percentages for COD, nitrate-nitrogen, and phosphate from S-NZVI were 50, 88, and 99 %, respectively. Heavy metal removal was higher in S-NZVI (&gt;95 %) than others. MA-NZVI, its oxidation products, and functional groups of its coating showed the maximum removal amounts for both Cu (56.27 mg g⁻¹) and Zn (28.38 mg g⁻¹). All mercapto-NZVI showed well-stabilized nature under FTIR and XRD investigations. Therefore, we suggest mercapto acids as better agents to enhance the air stability for NZVI since chemically bonded thiol and carbonyl groups actively participation for stabilization process.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><pmid>24535668</pmid><doi>10.1007/s11356-014-2625-1</doi><tpages>13</tpages></addata></record>
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1614-7499
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source MEDLINE; SpringerLink Journals - AutoHoldings
subjects Acids
air
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biological Oxygen Demand Analysis
Carbonyl compounds
Cellulose acetate
Chemical oxygen demand
coatings
Contaminants
Contamination
copper
Developed countries
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental cleanup
Environmental Health
Environmental Restoration and Remediation - methods
Environmental science
Environmental studies
Experiments
Fourier analysis
Fourier transform infrared spectroscopy
Fourier transforms
Gravimetric analysis
Heavy metals
Hydrocarbons
Infrared spectroscopy
Investigations
iron
Iron - chemistry
Landfill
Landfills
Leachates
Metal ions
Metal Nanoparticles - chemistry
Metals
Metals, Heavy - analysis
Microscopy
Microscopy, Electron, Scanning
Microscopy, Electron, Transmission
Nanoparticles
Nanostructure
nitrate nitrogen
Nitrates
Nitrates - analysis
nutrients
Oxidation
Oxidation-Reduction
Oxygen demand
Pesticides
Phosphates - analysis
Photoelectron Spectroscopy
Plumes
Pollutants
Reduction
remediation
Research Article
Scanning electron microscopy
Spectrum analysis
Sri Lanka
Starch
Thioglycolates
Thiomalates
Transmission electron microscopy
Tropical Climate
Waste disposal sites
Waste Water Technology
Water Management
Water Pollutants, Chemical - chemistry
Water Pollution Control
X-Ray Diffraction
X-ray photoelectron spectroscopy
zinc
title Organic-coated nanoparticulate zero valent iron for remediation of chemical oxygen demand (COD) and dissolved metals from tropical landfill leachate
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