Publicación Artículo científico (article). 2011

Modified photo-Fenton for degradation of emerging contaminants in municipal wastewater effluents

Repositorio Institucional del Instituto IMDEA Agua
oai:eprints.imdea-agua.org:106
Repositorio Institucional del Instituto IMDEA Agua
  • Klamerth, N.
  • Malato, S.
  • Maldonado, M.I.
  • Agüera, A.
  • Fernández-Alba, A.R.
As normal municipal wastewater treatment plants (MWTP) are not able to entirely degrade xenobiotic substances, this study focuses on modified solar photo-Fenton treatment (5 mg L−1 Fe, initial pH ≈ 7) of a municipal wastewater treatment plant (MWTP) effluent. However, effluents do not contain compounds which could form photoactive Fe3+ complexes. The use of ferrioxalate, humic substances (HA) and mixing the MWTP effluent with small amounts of influent could be justified to form photoactive Fe3+ complexes. All experiments were done in MWTP effluent spiked (5 or 100 μg/L) with 15 emerging contaminants (ECs) using a pilot compound parabolic collector (CPC) solar plant designed for solar photocatalytic applications. Dissolved organic carbon and UPLC–UV (with prior solid phase extraction) were applied for evaluating the results. The oxalate-enhanced process provided satisfactory EC degradation results but low residual pH of the treated water. HA (10 mg L−1) enhanced the process, balancing degradation time and residual pH. Mixing of MWTP influent and effluent delivered rather disappointing results, as EC degradation was unsuccessful in all cases tested.
 
DOI:
Repositorio Institucional del Instituto IMDEA Agua
oai:eprints.imdea-agua.org:106

HANDLE:
Repositorio Institucional del Instituto IMDEA Agua
oai:eprints.imdea-agua.org:106
 
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Repositorio Institucional del Instituto IMDEA Agua
oai:eprints.imdea-agua.org:106

Repositorio Institucional del Instituto IMDEA Agua
oai:eprints.imdea-agua.org:106
Artículo científico (article). 2011

MODIFIED PHOTO-FENTON FOR DEGRADATION OF EMERGING CONTAMINANTS IN MUNICIPAL WASTEWATER EFFLUENTS

Repositorio Institucional del Instituto IMDEA Agua
  • Klamerth, N.
  • Malato, S.
  • Maldonado, M.I.
  • Agüera, A.
  • Fernández-Alba, A.R.
As normal municipal wastewater treatment plants (MWTP) are not able to entirely degrade xenobiotic substances, this study focuses on modified solar photo-Fenton treatment (5 mg L−1 Fe, initial pH ≈ 7) of a municipal wastewater treatment plant (MWTP) effluent. However, effluents do not contain compounds which could form photoactive Fe3+ complexes. The use of ferrioxalate, humic substances (HA) and mixing the MWTP effluent with small amounts of influent could be justified to form photoactive Fe3+ complexes. All experiments were done in MWTP effluent spiked (5 or 100 μg/L) with 15 emerging contaminants (ECs) using a pilot compound parabolic collector (CPC) solar plant designed for solar photocatalytic applications. Dissolved organic carbon and UPLC–UV (with prior solid phase extraction) were applied for evaluating the results. The oxalate-enhanced process provided satisfactory EC degradation results but low residual pH of the treated water. HA (10 mg L−1) enhanced the process, balancing degradation time and residual pH. Mixing of MWTP influent and effluent delivered rather disappointing results, as EC degradation was unsuccessful in all cases tested.