2021-04-122019-09-010269749118736424WOS;000483405400082PUBMED;31284213SCOPUS;2-s2.0-85068409534http://hdl.handle.net/10784/28272A Fenton like advanced oxidation process (AOP) employing scrap zerovalent iron (SZVI) and hydrogen peroxide (H2O2) was studied for industrial textile wastewater treatment from a textile manufacturing plant located at Medellin, Colombia (South America). The wastewater effluent studied contains a mixture of organic compounds resistant to conventional treatments. The effect of initial pH and SZVI concentration and H2O2 concentration were studied by a response surface methodology (RSM) Box-Behnken design of experiment (BBD). The combined SZVI/H2O2 process led to reductions of 95% color, 76% of chemical oxygen demand (COD) and 71% of total organic carbon (TOC) at optimal operating conditions of pH = 3, SZVI = 2000 mg/L and [H2O2] = 24.5 mM. Molecular weight distribution measurement (MWD), ultraviolet-visible (UV-Vis) spectroscopy, HPLC, biodegradability and toxicity were used to characterize the pollutants after the treatment process finding that the resulting effluent was polluted mostly by low molecular weight carboxylic acids. A remarkable biodegradability enhancement of the effluent was evidenced by a BOD5/COD ratio increase from 0.22 to 0.4; also, the SZVI/H2O2 process successfully reduced the toxicity from 60% to 20% of dead A. Salina crustaceans. (C) 2019 Elsevier Ltd. All rights reserved.enghttps://v2.sherpa.ac.uk/id/publication/issn/0269-7491Industrial textile wastewaterAdvanced treatmentScrap zerovalent iron (SZVI)H2O2OptimizationToxicityinfo:eu-repo/semantics/article2021-04-12GilPavas, EdisonCorrea-Sanchez, SantiagoAcosta, Diego A.10.1016/j.envpol.2019.06.104