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Removal Efficiency of Nitrite and Sulfide Pollutants by Electrochemical Process by Using Ti/RuIrO2 Anode


 
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1. Title Title of document Removal Efficiency of Nitrite and Sulfide Pollutants by Electrochemical Process by Using Ti/RuIrO2 Anode
 
2. Creator Author's name, affiliation, country Aris Mukimin; Center of Industrial Pollution Prevention Technology, Jl. Ki Mangunsarkoro No. 6 PO Box 829, Semarang 50136, Indonesia; Indonesia
 
2. Creator Author's name, affiliation, country Agus Purwanto; Center of Industrial Pollution Prevention Technology, Jl. Ki Mangunsarkoro No. 6 PO Box 829, Semarang 50136, Indonesia; Indonesia
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) sulfide; nitrite; electrochemical; Ti/RuIrO2 anode; Fe cathode
 
4. Description Abstract In general, wastewater treatment by physical, chemical and biological methods are only focused on TSS, BOD and COD removals that the effluent still contains anion pollutant as NO2- and S2-. Electrochemical technology is a proper method for those pollutants treatment due to its fast process, easy operation and minimum amount of sludge. Electrocatalytic reactor with 8 L capacity using Ti/RuIrO2 cylinder as anode and Fe plate as cathode was arranged and applied to treat anion pollutants. Hydraulic retention time (30, 60, 90 and 120 min), salt concentration (250, 500 and 750 mg/L) and voltage (4, 5, and 6 V) were chosen as operation variables and NO2- and S2- concentrations as parameter indicators. Nitrite removal efficiency reached 75 and 99.7% after 60 and 120 min of electrolysis, respectively, while sulfide could obtain higher efficiency, i.e., 97 and 99.9% after 60 and 90 min, respectively, at operation variables of potential of 5 V and salt of 500 mg/L. Removal process is dominated by indirect oxidation mechanism by HClO/ClO- oxidators generated at anode surface as intermediate products. The lifespan of electrode and electric consumption are two main factors of operation cost. Electric consumed was 0.452 kWh per 1 g nitrite removed.
 
5. Publisher Organizing agency, location Universitas Gadjah Mada
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 2018-01-25
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format Full Text PDF
 
10. Identifier Uniform Resource Identifier https://jurnal.ugm.ac.id/ijc/article/view/26609
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.22146/ijc.26609
 
11. Source Title; vol., no. (year) Indonesian Journal of Chemistry; Article in press
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c) 2018 Indonesian Journal of Chemistry
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