Study of isoniazid degradation by Fenton and photo-Fenton processes, by-products analysis and toxicity evaluation

Doxycycline Removal by Solar Photo-Fenton on a Pilot-Scale Composite Parabolic Collector (CPC) Reactor

“…To corroborate the findings, an HPLC analysis before and after the SPF treatment was carried out. The DOX concentration declined from 0.06 mM to 0.0066 mM at 350 nm with a DOX removal of 88.44%, which is in agreement with the results of previous studies on antibiotics photodegradation using the same oxidation process that indicates a complete degradation rate of antibiotics [17,21,49,50]. The obtained results of the elimination of the total organic carbon and the chemical oxygen demand before and after solar photo-Fenton treatment are listed in Table 5.…”

“…One promising approach is the use of advanced oxidation processes (AOPs), which are based on the production of hydroxyl radicals, as a strong oxidizing agents, to degrade organic pollutants, namely, ozonation [14], photocatalysis [15], electro-Fenton oxidation [16], and Fenton and photo-Fenton oxidation [17]. Among these processes, the photo-Fenton process has gained a lot of attention as an alternative for degrading recalcitrant pollutants due to its high efficiency, operational easiness, and potential to be powered by solar radiation [3].…”

Solar photo-oxidation of recalcitrant industrial wastewater: a review

“…Fe 2+ or Fe 3+ and H 2 O 2 are sources of hydroxyl radicals in the photo-Fenton process. The Fenton reaction between Fe 2+ and H 2 O 2 , which creates hydroxyl radical and causes Fe 2+ to be oxidized to Fe +3 , is at the heart of the chemistry (Brillas 2022;Rodrigues-Silva et al 2022). The photo-Fenton process, which can use ultraviolet irradiation from natural solar light, often speeds up reaction rates and induces faster degradation of resistant pollutants than the dark process (Wang et al 2021a;Ju et al 2022).…”

Challenges on solar oxidation as post-treatment of municipal wastewater from UASB systems: Treatment efficiency, disinfection and toxicity

“…Concerning solar photo-Fenton application as post-treatment of CAS effluent, only a stimulation of root elongation was detected within 90 min ( Freitas et al, 2017 ). Although results obtained from this bioassay provide essential information considering the reuse of treated wastewater for irrigation in agriculture ( Sobrero and Ronco, 2009 ), the classification of toxic effects concerning the RGI has only been applied in a few studies for environmental matrices such as: synthetic wastewater before and after UASB system ( Rodrigues-Silva et al, 2022b ), MSE ( Freitas et al, 2017 ), pesticides contaminated water ( Utzig et al, 2019 ), antibiotic contaminated water ( Rodrigues-Silva et al, 2022a ), and clinical laboratory hospital wastewater ( Sá et al, 2021 ).…”