AOX removal from pulp and paper wastewater by Fenton and photo-Fenton processes: A real case-study

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abstract

D-0 bleaching wastewater from E. globulus Kraft pulping industry was treated by Fenton and photo-Fenton processes. The aim was to optimize the operational conditions for adsorbable organic halides (AOX) removal, namely oxidant concentration, [H2O2], catalyst concentration, [Fe2+], and treatment time, using the central composite experimental design (CCED) tool. Temperature and pH were set at 60 degrees C and 2, respectively, which are similar to the natural values of the D-0 bleaching wastewater. Both processes showed potential to remove AOX from D-0 with 177 - 178 mM H2O2 and 10 min reaction time. Maximum AOX removal was 85 % for the Fenton process with 8.5 mM Fe2+, and 95 % for the photo-Fenton process with 2.0 mM Fe2+ and UV irradiance 142 W.m(-2). For both methods, the only statistically significant variable (p=0.05) was the concentration of oxidant, [H2O2]. (C) 2019 Published by Elsevier Ltd.

keywords

ADVANCED OXIDATION PROCESSES; EFFLUENTS; INDUSTRY

subject category

Energy & Fuels

authors

Ribeiro, JP; Marques, CC; Portugal, I; Nunes, MI

our authors

foto Inês Portugal

Inês Portugal

Assistant Professor

Groups

G4 - Renewable Materials and Circular Economy

Projects

Produtos e Tecnologias para o sector do Eucalyptus Globulus (PROTEUS)

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2019)

acknowledgements

This work was financed by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of Operational Competitiveness and Internationalization Programme (POCI) in the scope of Project PROTEUS - POCI01-0247-FEDER-017729. J.P. Ribeiro acknowledges FCT, Portugal -Fundacao para a Ciencia e a Tecnologia, I.P. for the PhD Grant (SFRH/BD/141133/2018). Thanks also due to FCT/MCTES, Portugal for the financial support to CESAM (FCT Ref. UID/AMB/50017/2019) and CICECO, Portugal (FCT Ref. UID/CTM/50011/2019), through national funds.

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Publication Details

type
Journal Article
year
2020
journal
ENERGY REPORTS
volume
6
publisher
ELSEVIER
issn
2352-4847
digital object identifier
10.1016/j.egyr.2019.09.068
web of science article identifier
WOS:000518455400121

Journal Metrics (JCR 2019)

Journal Impact Factor
3.595
Journal Impact Factor (5 yrs)
Not Available
category normalized journal percentile
54.018

Citations

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