Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heterotopic formaldehyde biodegradation through UV/H2O2 system with biosynthetic H2O2
Biodegradation was regarded an environmentally benign and cost‐effective technology for formaldehyde (CH2O) removal. However, the biotoxicity of CH2O inhibited microbial activity and decreased removal performance. We developed a novel heterotopic CH2O biodegradation process that combined bioelectrochemical system (BES) and UV/H2O2. Instead of exogenous addition, H2O2 was biosynthesized with electron transferred from electrochemically active bacteria. Heterotopic biodegradation of CH2O was more efficient and faster than in situ biodegradation, as confirmed by 69%–308% higher removal efficiency and 98% shorter degradation time. Operated under optimal conditions for 30 min, which are optical distance of 2 cm, initial H2O2 concentration of 102 mg/L, and pH 3, heterotopic biodegradation removed 78%, 73%, 49%, and 30% of CH2O with 6, 8, 10, and 20 mg/L initial concentration. Mild formation of hydroxyl radicals from UV/H2O2 is beneficial to sustainable CH2O degradation and efficient H2O2 utilization. Heterotopic biodegradation is a promising technology for efficient degradation of other organic compounds with biological toxicity. H2O2 biosynthesis through electrochemically active bacteria (EAB) served as source of ·OH for CH2O removal in UV/H2O2. Heterotopic CH2O biodegradation avoided the biotoxicity of CH2O. Heterotopic biodegradation of CH2O saved 98% time than in‐situ biodegradation. Heterotopic CH2O biodegradation improved 69%–308% efficiency than in‐situ.
Heterotopic formaldehyde biodegradation through UV/H2O2 system with biosynthetic H2O2
Biodegradation was regarded an environmentally benign and cost‐effective technology for formaldehyde (CH2O) removal. However, the biotoxicity of CH2O inhibited microbial activity and decreased removal performance. We developed a novel heterotopic CH2O biodegradation process that combined bioelectrochemical system (BES) and UV/H2O2. Instead of exogenous addition, H2O2 was biosynthesized with electron transferred from electrochemically active bacteria. Heterotopic biodegradation of CH2O was more efficient and faster than in situ biodegradation, as confirmed by 69%–308% higher removal efficiency and 98% shorter degradation time. Operated under optimal conditions for 30 min, which are optical distance of 2 cm, initial H2O2 concentration of 102 mg/L, and pH 3, heterotopic biodegradation removed 78%, 73%, 49%, and 30% of CH2O with 6, 8, 10, and 20 mg/L initial concentration. Mild formation of hydroxyl radicals from UV/H2O2 is beneficial to sustainable CH2O degradation and efficient H2O2 utilization. Heterotopic biodegradation is a promising technology for efficient degradation of other organic compounds with biological toxicity. H2O2 biosynthesis through electrochemically active bacteria (EAB) served as source of ·OH for CH2O removal in UV/H2O2. Heterotopic CH2O biodegradation avoided the biotoxicity of CH2O. Heterotopic biodegradation of CH2O saved 98% time than in‐situ biodegradation. Heterotopic CH2O biodegradation improved 69%–308% efficiency than in‐situ.
Heterotopic formaldehyde biodegradation through UV/H2O2 system with biosynthetic H2O2
Zhao, Qian (Autor:in) / An, Jingkun (Autor:in) / Wang, Shu (Autor:in) / Wang, Cong (Autor:in) / Liu, Jia (Autor:in) / Li, Nan (Autor:in)
Water Environment Research ; 91 ; 598-605
01.07.2019
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Enhanced Biodegradation of Carbamazepine in Wastewater Effluent After UV/H2O2 Advanced Oxidation
| British Library Conference Proceedings | 2011
Comparison of flutamide degradation via UV/TiO2, UV/H2O2 and UV/H2O2/TiO2 systems
| DOAJ | 2020
| DOAJ | 2024