Fenton processes for AOX removal from a kraft pulp bleaching industrial wastewater: Optimisation of operating conditions and cost assessment
authors Ribeiro, JP; Marques, CC; Portugal, I; Nunes, MI
nationality International
journal JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
author keywords Fenton; Photo-Fenton; AOX; Operational cost; Bleaching wastewater
keywords ADVANCED OXIDATION PROCESSES; PAPER-INDUSTRY; CONVENTIONAL FENTON; EXPERIMENTAL-DESIGN; MILL EFFLUENT; BIODEGRADABILITY; DEGRADATION; WASTEWATERS; COLOR; IRON
abstract AOX emissions to water are a key environmental aspect in the pulp and paper industry being limited by EU Ecolabel criteria. In this work, response surface methodology was used to optimise Fenton and photo-Fenton processes for AOX removal from a kraft pulp mill bleaching wastewater. Focus on the specific stream where AOX is higher reduces the wastewater volume to treat and the associated costs. Moreover, there is a need to assess the effect of treatment in parameters other than AOX, such as BOD5, COD and colour content, which were also quantified in this work. Operational costs were determined for both processes, including chemical consumption and energy input (in the case of photo-Fenton process). The photo-Fenton process exhibited better performance than the classic Fenton process, achieving 90 % AOX removal against 80 % for the Fenton process, higher colour content removal and enhanced wastewater's biodegradability (BOD5/COD ratio). Moreover, photo-Fenton process showed lower operational costs for maximum AOX removal: 46.5 (sic) m(-3) wastewater treated or 0.45 (sic) g(-1) AOX removed, against 70.0 (sic) m(-3) wastewater treated or 0.78 (sic) g(-1) AOX removed by the Fenton process.
publisher ELSEVIER SCI LTD
isbn 2213-3437
year published 2020
volume 8
issue 4
digital object identifier (doi) 10.1016/j.jece.2020.104032
web of science category Engineering, Environmental; Engineering, Chemical
subject category Engineering
unique article identifier WOS:000562065400010
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 4.3
5 year journal impact factor Not Available
category normalized journal impact factor percentile 73.526
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg