Thermal activation of persulfates for wastewater depollution on pilot scale solar equipment - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Solar Energy Année : 2020

Thermal activation of persulfates for wastewater depollution on pilot scale solar equipment

C. Telegang Chekem
  • Fonction : Auteur
J.M. Mancaux
  • Fonction : Auteur
V. Goetz

Résumé

Thermal activation of new oxidant chemicals like Persulfate (PS) has recently gained attention in driving advanced oxidation processes (AOP) for a number of applications. On the other hand, addressing energy demand with carbon free and sustainable energy solutions represents an asset for new technologies in the modern society. This paper then investigates on the removal of pharmaceuticals residues in wastewater (WW), conducted with PS advanced oxidation reactions on a solar thermal pilot equipment. Indoor preliminary investigations on small scale laboratory experimentations show how increasing temperature has a direct positive impact on pollutants degradations rate (k app value ranging from 0.4•10 −3 s −1 at ambient to 10.4•10 −3 s −1 at 75°C). However, after an experimental screening methodology, 65°C and 200 µM appear as the appropriate target temperature and PS oxidant dosage to cope with both activation of PS oxidant and degradation of ten target micropollutants typically found in WW stream. Outdoor experimentations on the solar pilot equipment were conducted according to a batch running mode at a treatment capacity scale of a cubic meter. 95% pollutant removal rate is achieved within 2 h once the temperature has raised up to the target value (65°C) in the bulk treated WW effluent. Series of treatment cycles under the natural day/night period demonstrate the reproducibility of the performance. As an early step result of the process optimization approach, heat recovery demonstration on the pilot equipment improves significantly the energetic balance over the now innovative thermal solar water treatment.
Fichier principal
Vignette du fichier
Article_SolarEnergy_30032020_VG.pdf (1.36 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02926804 , version 1 (11-12-2020)

Identifiants

Citer

C. Telegang Chekem, S. Chiron, J.M. Mancaux, G. Plantard, V. Goetz. Thermal activation of persulfates for wastewater depollution on pilot scale solar equipment. Solar Energy, 2020, 205, pp.372-379. ⟨10.1016/j.solener.2020.04.075⟩. ⟨hal-02926804⟩
55 Consultations
54 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More