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Removal of cyanide from water by means of plasma discharge technology.
Water Res. 2013 Mar 15; 47(4):1701-7.WR

Abstract

Two different nonthermal plasma reactors at atmospheric pressure were assessed for the first time for cyanide removal (1 mg L(-1)) from aqueous solutions (0.025 M NaHCO(3)/NaOH buffer, pH 11) at laboratory scale. Both devices were dielectric barrier discharge (DBD) reactors; one of them was a conventional batch reactor (R1) and the other one was a coaxial thin falling water film reactor (R2). A first-order degradation kinetics was proposed for both experiments, obtaining k(R1) = 0.5553 min(-1) and k(R2) = 0.7482 min(-1). The coaxial reactor R2 yielded a removal of 99% within only 3 min. Energy efficiencies (G) were calculated, yielding 1.74 mg kW(-1) h(-1) for R1 and 127.9 mg kW(-1) h(-1) for R2. When the treatment was applied to industrial wastewaters, cyanide elimination was confirmed, although at a lower rate (above 92% removal in 90 min with R2). Therefore, plasma reactors could be a relevant alternative to established advanced oxidation techniques (UV, H(2)O(2), ozonation, etc.) for the removal of cyanide from wastewaters with low organic loads or even drinking waters.

Authors+Show Affiliations

Instituto de Diagnóstico Ambiental y Estudios del Agua (IDAEA), CID, CSIC, C/Jordi Girona 18-26, E-08034 Barcelona, Spain. maria.hijosa@cid.csic.esNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23332789

Citation

Hijosa-Valsero, María, et al. "Removal of Cyanide From Water By Means of Plasma Discharge Technology." Water Research, vol. 47, no. 4, 2013, pp. 1701-7.
Hijosa-Valsero M, Molina R, Schikora H, et al. Removal of cyanide from water by means of plasma discharge technology. Water Res. 2013;47(4):1701-7.
Hijosa-Valsero, M., Molina, R., Schikora, H., Müller, M., & Bayona, J. M. (2013). Removal of cyanide from water by means of plasma discharge technology. Water Research, 47(4), 1701-7. https://doi.org/10.1016/j.watres.2013.01.001
Hijosa-Valsero M, et al. Removal of Cyanide From Water By Means of Plasma Discharge Technology. Water Res. 2013 Mar 15;47(4):1701-7. PubMed PMID: 23332789.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of cyanide from water by means of plasma discharge technology. AU - Hijosa-Valsero,María, AU - Molina,Ricardo, AU - Schikora,Hendrik, AU - Müller,Michael, AU - Bayona,Josep M, Y1 - 2013/01/09/ PY - 2012/07/26/received PY - 2012/12/27/revised PY - 2013/01/01/accepted PY - 2013/1/22/entrez PY - 2013/1/22/pubmed PY - 2013/7/23/medline SP - 1701 EP - 7 JF - Water research JO - Water Res VL - 47 IS - 4 N2 - Two different nonthermal plasma reactors at atmospheric pressure were assessed for the first time for cyanide removal (1 mg L(-1)) from aqueous solutions (0.025 M NaHCO(3)/NaOH buffer, pH 11) at laboratory scale. Both devices were dielectric barrier discharge (DBD) reactors; one of them was a conventional batch reactor (R1) and the other one was a coaxial thin falling water film reactor (R2). A first-order degradation kinetics was proposed for both experiments, obtaining k(R1) = 0.5553 min(-1) and k(R2) = 0.7482 min(-1). The coaxial reactor R2 yielded a removal of 99% within only 3 min. Energy efficiencies (G) were calculated, yielding 1.74 mg kW(-1) h(-1) for R1 and 127.9 mg kW(-1) h(-1) for R2. When the treatment was applied to industrial wastewaters, cyanide elimination was confirmed, although at a lower rate (above 92% removal in 90 min with R2). Therefore, plasma reactors could be a relevant alternative to established advanced oxidation techniques (UV, H(2)O(2), ozonation, etc.) for the removal of cyanide from wastewaters with low organic loads or even drinking waters. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/23332789/Removal_of_cyanide_from_water_by_means_of_plasma_discharge_technology_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(13)00004-3 DB - PRIME DP - Unbound Medicine ER -