combined treatment of landfill leachate using calcium oxide, ferric chloride and clinoptilolite

The aim of this research was development of appropriate procedure for treatment of landfill leachate taken from old sanitary landfill Piskornica (Koprivnica, Croatia). Due to complex nature of the effluent a combined treatment approach was applied. Samples were treated with calcium oxide followed by...

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Published in:Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering Toxic/hazardous substances & environmental engineering, 2011-02, Vol.46 (3), p.323-328
Main Authors: Orescanin, Visnja, Ruk, Damir, Kollar, Robert, Mikelic, Ivanka Lovrencic, Nad, Karlo, Mikulic, Nenad
Format: Article
Language:English
Subjects:
Adsorption
Ammonia
Ammonia - analysis
Applied sciences
Biological Oxygen Demand Analysis
Calcium Compounds - chemistry
Calcium oxide
CaO
chemical oxygen demand
Chlorides - chemistry
chromium
clinoptilolite
Color
Color removal
Contact
copper
Croatia
Effluents
Exact sciences and technology
Ferric chloride
Ferric Compounds - chemistry
General treatment and storage processes
iron
Landfill
Landfill leachate
Landfills
Leaching
lead
Lime
Metals, Heavy - analysis
Nephelometry and Turbidimetry
nickel
Oxides - chemistry
Pollution
Spectrometry, X-Ray Emission
Temperature
Time Factors
Turbidity
Wastes
Water Pollutants, Chemical - chemistry
Water Purification - methods
Water treatment
Zeolites - chemistry
zinc
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container_title Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
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creator Orescanin, Visnja
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Mikelic, Ivanka Lovrencic
Nad, Karlo
Mikulic, Nenad
description The aim of this research was development of appropriate procedure for treatment of landfill leachate taken from old sanitary landfill Piskornica (Koprivnica, Croatia). Due to complex nature of the effluent a combined treatment approach was applied. Samples were treated with calcium oxide followed by ferric chloride and finally with clinoptilolite. The optimum amount of treating agents and contact time were determined. Application of calcium oxide (25 g/L, 20 min. contact time) resulted in the reduction of color, turbidity, suspended solids and ammonia for 94.50%, 96.55%, 95.66% and 21.60%, respectively, while the removal efficiency of Cr (VI), Fe, Ni, Cu, Zn and Pb was 75.00%, 95.34%, 56.52%, 78.72%, 73.02% and 100.00%, respectively. After addition of ferric chloride (570 mg Fe³⁺/L, 20 min. contact time) removal efficiency of color, turbidity, suspended solids and ammonia increased to 96.04%, 99.27%, 98.61%, and 43.20%, respectively. Removal of ammonia (81.60%) increased significantly after final adsorption onto clinoptilolite (25 g/L, 4 h contact time). Removal of COD after successive treatment with calcium oxide, ferric chloride and clinoptilolite was 64.70%, 77.40% and 81.00%, respectively.
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Due to complex nature of the effluent a combined treatment approach was applied. Samples were treated with calcium oxide followed by ferric chloride and finally with clinoptilolite. The optimum amount of treating agents and contact time were determined. Application of calcium oxide (25 g/L, 20 min. contact time) resulted in the reduction of color, turbidity, suspended solids and ammonia for 94.50%, 96.55%, 95.66% and 21.60%, respectively, while the removal efficiency of Cr (VI), Fe, Ni, Cu, Zn and Pb was 75.00%, 95.34%, 56.52%, 78.72%, 73.02% and 100.00%, respectively. After addition of ferric chloride (570 mg Fe³⁺/L, 20 min. contact time) removal efficiency of color, turbidity, suspended solids and ammonia increased to 96.04%, 99.27%, 98.61%, and 43.20%, respectively. Removal of ammonia (81.60%) increased significantly after final adsorption onto clinoptilolite (25 g/L, 4 h contact time). Removal of COD after successive treatment with calcium oxide, ferric chloride and clinoptilolite was 64.70%, 77.40% and 81.00%, respectively.</description><identifier>ISSN: 1532-4117</identifier><identifier>ISSN: 1093-4529</identifier><identifier>EISSN: 1532-4117</identifier><identifier>DOI: 10.1080/10934529.2011.539118</identifier><identifier>PMID: 21308604</identifier><language>eng</language><publisher>Philadelphia, PA: Taylor &amp; Francis Group</publisher><subject>Adsorption ; Ammonia ; Ammonia - analysis ; Applied sciences ; Biological Oxygen Demand Analysis ; Calcium Compounds - chemistry ; Calcium oxide ; CaO ; chemical oxygen demand ; Chlorides - chemistry ; chromium ; clinoptilolite ; Color ; Color removal ; Contact ; copper ; Croatia ; Effluents ; Exact sciences and technology ; Ferric chloride ; Ferric Compounds - chemistry ; General treatment and storage processes ; iron ; Landfill ; Landfill leachate ; Landfills ; Leaching ; lead ; Lime ; Metals, Heavy - analysis ; Nephelometry and Turbidimetry ; nickel ; Oxides - chemistry ; Pollution ; Spectrometry, X-Ray Emission ; Temperature ; Time Factors ; Turbidity ; Wastes ; Water Pollutants, Chemical - chemistry ; Water Purification - methods ; Water treatment ; Zeolites - chemistry ; zinc</subject><ispartof>Journal of environmental science and health. 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Part A, Toxic/hazardous substances &amp; environmental engineering</title><addtitle>J Environ Sci Health A Tox Hazard Subst Environ Eng</addtitle><description>The aim of this research was development of appropriate procedure for treatment of landfill leachate taken from old sanitary landfill Piskornica (Koprivnica, Croatia). Due to complex nature of the effluent a combined treatment approach was applied. Samples were treated with calcium oxide followed by ferric chloride and finally with clinoptilolite. The optimum amount of treating agents and contact time were determined. Application of calcium oxide (25 g/L, 20 min. contact time) resulted in the reduction of color, turbidity, suspended solids and ammonia for 94.50%, 96.55%, 95.66% and 21.60%, respectively, while the removal efficiency of Cr (VI), Fe, Ni, Cu, Zn and Pb was 75.00%, 95.34%, 56.52%, 78.72%, 73.02% and 100.00%, respectively. After addition of ferric chloride (570 mg Fe³⁺/L, 20 min. contact time) removal efficiency of color, turbidity, suspended solids and ammonia increased to 96.04%, 99.27%, 98.61%, and 43.20%, respectively. Removal of ammonia (81.60%) increased significantly after final adsorption onto clinoptilolite (25 g/L, 4 h contact time). 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Application of calcium oxide (25 g/L, 20 min. contact time) resulted in the reduction of color, turbidity, suspended solids and ammonia for 94.50%, 96.55%, 95.66% and 21.60%, respectively, while the removal efficiency of Cr (VI), Fe, Ni, Cu, Zn and Pb was 75.00%, 95.34%, 56.52%, 78.72%, 73.02% and 100.00%, respectively. After addition of ferric chloride (570 mg Fe³⁺/L, 20 min. contact time) removal efficiency of color, turbidity, suspended solids and ammonia increased to 96.04%, 99.27%, 98.61%, and 43.20%, respectively. Removal of ammonia (81.60%) increased significantly after final adsorption onto clinoptilolite (25 g/L, 4 h contact time). Removal of COD after successive treatment with calcium oxide, ferric chloride and clinoptilolite was 64.70%, 77.40% and 81.00%, respectively.</abstract><cop>Philadelphia, PA</cop><pub>Taylor &amp; Francis Group</pub><pmid>21308604</pmid><doi>10.1080/10934529.2011.539118</doi><tpages>6</tpages></addata></record>
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identifier ISSN: 1532-4117
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subjects Adsorption
Ammonia
Ammonia - analysis
Applied sciences
Biological Oxygen Demand Analysis
Calcium Compounds - chemistry
Calcium oxide
CaO
chemical oxygen demand
Chlorides - chemistry
chromium
clinoptilolite
Color
Color removal
Contact
copper
Croatia
Effluents
Exact sciences and technology
Ferric chloride
Ferric Compounds - chemistry
General treatment and storage processes
iron
Landfill
Landfill leachate
Landfills
Leaching
lead
Lime
Metals, Heavy - analysis
Nephelometry and Turbidimetry
nickel
Oxides - chemistry
Pollution
Spectrometry, X-Ray Emission
Temperature
Time Factors
Turbidity
Wastes
Water Pollutants, Chemical - chemistry
Water Purification - methods
Water treatment
Zeolites - chemistry
zinc
title combined treatment of landfill leachate using calcium oxide, ferric chloride and clinoptilolite
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