TY - JOUR T1 - Tertiary treatment of pulp mill wastewater by solar photo-Fenton. AU - Lucas,Marco S, AU - Peres,José A, AU - Amor,Carlos, AU - Prieto-Rodríguez,Lucía, AU - Maldonado,Manuel I, AU - Malato,Sixto, Y1 - 2012/05/11/ PY - 2012/02/14/received PY - 2012/05/01/revised PY - 2012/05/03/accepted PY - 2012/5/29/entrez PY - 2012/5/29/pubmed PY - 2012/10/26/medline SP - 173 EP - 81 JF - Journal of hazardous materials JO - J Hazard Mater VL - 225-226 N2 - This work reports on pulp mill wastewater (PMW) tertiary treatment by Fenton (Fe(2+)/H(2)O(2)) and solar photo-Fenton (Fe(2+)/H(2)O(2)/UV) processes in a pilot plant based on compound parabolic collectors (CPCs). Solar photo-Fenton reaction is much more efficient than the respective dark reaction under identical experimental conditions. It leads to DOC mineralisation, COD and total polyphenols (TP) removal higher than 90%. The solar photo-Fenton experiment with 5mg Fe L(-1) reaches 90% of DOC mineralisation with 31kJ L(-1) of UV energy and 50mM of H(2)O(2). The initial non-biodegradability of PMW, as shown by respirometry assays and BOD(5)/COD ratio, can be changed after a solar photo-Fenton treatment. Experiments with 20 and 50mg Fe L(-1) revealed that solar photo-Fenton can reach the same DOC degradation (90%), however, consuming less H(2)O(2) and time. Diluting the initial organic load to 50% also diminishes the dosage of H(2)O(2) and the necessary reaction time to achieve high DOC removals. Accordingly, solar photo-Fenton can be considered an alternative or complementary process to improve the performance of a biologic treatment and, subsequently, achieve legal limits on discharge into natural waters. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/22633923/Tertiary_treatment_of_pulp_mill_wastewater_by_solar_photo_Fenton_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(12)00495-5 DB - PRIME DP - Unbound Medicine ER -