Sonoluminescence and H2O2 produced in water under different ultrasound operating conditions applied to the sono-photo-Fenton landfill leachate treatment

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-02-24 DOI:10.1016/j.cep.2025.110246

Flavio Alanís , Rainer Nordenflycht , Matías Guerrero , Katherine Villalobos , Rodrigo Poblete , C.A. Rodríguez , Norma Pérez , Ernesto Cortés , Ricardo A. Torres-Palma

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引用次数: 0

Abstract

Given the global issue of water scarcity, the recovery and treatment of wastewater, as landfill leachate (LL), are of utmost importance. The presence of colloids in LL scatters UV irradiation, limiting the effectiveness of the photo-Fenton process. However, using ultrasound (US) technology can degrade the organic matter in LL and produce H₂O₂ and sonoluminescence, which are crucial in the photo-Fenton process. With its focus on practical applications, this research aims to improve the quality of LL treatment, thereby addressing a significant and urgent environmental challenge. Also, this research aimed to identify the optimal operational parameters that improve the self-generated H₂O₂ and sonoluminescence due to the US and to evaluate the improvement of the quality of LL using the sono-photo-Fenton.

Actinometry was used to measure the sonoluminescence produced in this study. The highest amount of H2O₂ and sonoluminescence was formed at 864 kHz and a US power of 500 W, obtaining 2.63 mg/L of H₂O₂ and 6.89 × 10⁻⁵ J/s of sonoluminescence. The optimised conditions were used in the sono-photo-Fenton process runs towards the degradation of a simulated LL (SLL) to evaluate the effect of concentration of Fe⁺² and concentration of H₂O₂ on the depuration of SLL, obtaining a synergy index of 1.25.

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.