We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Treatment of cellulose bleaching effluents and their filtration permeates by anodic oxidation with H<sub>2</sub>O<sub>2</sub> production.
- Authors
Salazar, Claudio; Sirés, Ignasi; Salazar, Ricardo; Mansilla, Héctor D.; Zaror, Claudio A.
- Abstract
BACKGROUND Electrochemical advanced oxidation processes (EAOPs), particularly those based on either cathodic electrogeneration of H2O2 or anodic oxidation (AO) via •OH, have become attractive technological options for the complete detoxification of wastewaters. Their integration with separation pre-treatment such as ultrafiltration (UF), nanofiltration (NF) or reverse osmosis (RO) may be a plausible way to reduce processing time and costs. RESULTS Raw effluents from the acid and alkaline elemental chlorine free bleaching stages of a hardwood-based kraft pulp mill, as well as their UF, NF and RO permeates, have been characterized and then treated by AO-H2O2 in a tank reactor with an air-diffusion cathode, which allowed efficient reduction of O2, and a DSA-RuO2 or BDD anode at constant cell voltage (2-12 V). Due to the complexity of the matrix, a larger H2O2 accumulation in the acid effluents was observed. DSA favoured the accumulation of
- Subjects
SEWAGE; ELECTROLYTIC oxidation; ELECTROCHEMICAL analysis; DETOXIFICATION (Substance abuse treatment); INDUSTRIAL waste purification; ULTRAFILTRATION; NANOFILTRATION; REVERSE osmosis (Water purification)
- Publication
Journal of Chemical Technology & Biotechnology, 2015, Vol 90, Issue 11, p2017
- ISSN
0268-2575
- Publication type
Article
- DOI
10.1002/jctb.4501