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Solar treatment of cork boiling and bleaching wastewaters in a pilot plant.
Water Res. 2009 Sep; 43(16):4050-62.WR

Abstract

This paper reports on cork boiling and bleaching wastewaters treatment by solar photocatalytic processes, TiO(2)/UV and Fe(2+)/H(2)O(2)/UV (TiO(2)-only for bleaching wastewater), in a pilot plant with compound parabolic collectors. The photo-Fenton reaction (k=0.12L/kJ(UV), r(0)=59.4 mg/kJ(UV)) is much more efficient that TiO(2) photocatalysis and TiO(2)+S(2)O(8)(2-) (k=0.0024 L/kJ(UV), r(0)=1.36 mg/kJ(UV)), leading to 94% mineralization of the bleaching wastewater after 31.5 kJ(UV)/L, consuming 77.1mM of H(2)O(2) (3.0 mmol/kJ(UV)) and using 20 mg/L of iron. For the cork boiling wastewater, after a slow initial reaction rate, the DOC degradation curve shows a first-order kinetics behaviour (k=0.015 L/kJ(UV), r(0)=20.8 mg/kJ(UV)) until 173 kJ(UV)/L (approximately 300 mgC/L). According to the average oxidation state (AOS), toxicity profiles, respirometry and kinetic results obtained in two solar CPCs plants, the optimal energy dose estimated for phototreatment to reach a biodegradable effluent is 15 kJ(UV)/L and 114 kJ(UV)/L, consuming 33 mM and 151 mM of H(2)OT:/PGN/ELSEVIER/WR/web/00007490/(2), achieving almost 49% and 48% mineralization of the wastewaters, respectively for the cork bleaching and boiling wastewaters.

Authors+Show Affiliations

LSRE-Laboratory of Separation and Reaction Engineering, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, 4200-465 Porto, Portugal. vilar@fe.up.ptNo 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

19577272

Citation

Vilar, Vítor J P., et al. "Solar Treatment of Cork Boiling and Bleaching Wastewaters in a Pilot Plant." Water Research, vol. 43, no. 16, 2009, pp. 4050-62.
Vilar VJ, Maldonado MI, Oller I, et al. Solar treatment of cork boiling and bleaching wastewaters in a pilot plant. Water Res. 2009;43(16):4050-62.
Vilar, V. J., Maldonado, M. I., Oller, I., Malato, S., & Boaventura, R. A. (2009). Solar treatment of cork boiling and bleaching wastewaters in a pilot plant. Water Research, 43(16), 4050-62. https://doi.org/10.1016/j.watres.2009.06.019
Vilar VJ, et al. Solar Treatment of Cork Boiling and Bleaching Wastewaters in a Pilot Plant. Water Res. 2009;43(16):4050-62. PubMed PMID: 19577272.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Solar treatment of cork boiling and bleaching wastewaters in a pilot plant. AU - Vilar,Vítor J P, AU - Maldonado,Manuel I, AU - Oller,I, AU - Malato,Sixto, AU - Boaventura,Rui A R, Y1 - 2009/06/16/ PY - 2009/02/02/received PY - 2009/04/03/revised PY - 2009/06/10/accepted PY - 2009/7/7/entrez PY - 2009/7/7/pubmed PY - 2009/10/7/medline SP - 4050 EP - 62 JF - Water research JO - Water Res VL - 43 IS - 16 N2 - This paper reports on cork boiling and bleaching wastewaters treatment by solar photocatalytic processes, TiO(2)/UV and Fe(2+)/H(2)O(2)/UV (TiO(2)-only for bleaching wastewater), in a pilot plant with compound parabolic collectors. The photo-Fenton reaction (k=0.12L/kJ(UV), r(0)=59.4 mg/kJ(UV)) is much more efficient that TiO(2) photocatalysis and TiO(2)+S(2)O(8)(2-) (k=0.0024 L/kJ(UV), r(0)=1.36 mg/kJ(UV)), leading to 94% mineralization of the bleaching wastewater after 31.5 kJ(UV)/L, consuming 77.1mM of H(2)O(2) (3.0 mmol/kJ(UV)) and using 20 mg/L of iron. For the cork boiling wastewater, after a slow initial reaction rate, the DOC degradation curve shows a first-order kinetics behaviour (k=0.015 L/kJ(UV), r(0)=20.8 mg/kJ(UV)) until 173 kJ(UV)/L (approximately 300 mgC/L). According to the average oxidation state (AOS), toxicity profiles, respirometry and kinetic results obtained in two solar CPCs plants, the optimal energy dose estimated for phototreatment to reach a biodegradable effluent is 15 kJ(UV)/L and 114 kJ(UV)/L, consuming 33 mM and 151 mM of H(2)OT:/PGN/ELSEVIER/WR/web/00007490/(2), achieving almost 49% and 48% mineralization of the wastewaters, respectively for the cork bleaching and boiling wastewaters. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/19577272/Solar_treatment_of_cork_boiling_and_bleaching_wastewaters_in_a_pilot_plant_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(09)00398-4 DB - PRIME DP - Unbound Medicine ER -