A review of the effects of iron compounds on methanogenesis in anaerobic environments

Phosphate substances transformation and vivianite formation in P-Fe containing sludge during the transition process of aerobic and anaerobic conditions

“…1 b). The stable pH was mainly due to the alkalinity from the matters of Fe(OH) 3 , Fe 2 O 3 in sludge and the buffering effect of zero valent iron (ZVI) ( Baek et al, 2019 ). In this baffled reactor system, the ORP and pH was exactly consistent with the formation conditions of vivianite.…”

Cadmium sulfide nanoparticles-assisted intimate coupling of microbial and photoelectrochemical processes: Mechanisms and environmental applications

“…1). In terms of electrical conductivity, CdS NPs are superior to several competing semiconductor materials, such as Fe 2 O 3 NPs, ZnS NPs and TiO 2 NPs (corresponding resistance of 10 3 -10 −2 , 10 2 -10 −2 and 10 10 -10 3 Ω⋅cm, respectively) (Baek et al, 2019;Soni et al, 2009;Yildiz et al, 2008). Ye et al (2019) previously demonstrated a promotion of electron transfer resulting from a weaker interfacial resistance derived from CdS NPs supplemented assays (which was only 59% that of non-CdS NPs amended assays).…”

Recent advances in the roles of minerals for enhanced microbial extracellular electron transfer

“…Additionally, microorganism-mineral interactions hold promise for exploitation in various bioelectrochemical engineering applications. Previous studies have primarily focused on the behaviors of microbes that harbor EETs coupled with redox-active and/or electrically conductive minerals for mineralization of organic pollutants and methanogenesis [20,21]. In recent years, major advances in microbial EET processes include fixation of carbon dioxide to organic compounds and denitrification via photosynthesis in conjunction with (semi) conductive minerals [22][23][24].…”