Bioelectrochemically-assisted degradation of chloroform by a co-culture of Dehalobacter and Dehalobacterium

Tetrachloroethane (TeCA) removal through sequential graphite-mixed metal oxide electrodes in a bioelectrochemical reactor

“…An interesting approach studied in recent years involves the use of electrical stimulation of microbial dechlorination in the presence of competing metabolisms, i.e., anions-reduction and methane-formation [ 16 ], promoting the complete denitrification in both reductive and oxidative environments [ 17 , 18 ]. Electrodes are used to manipulate the redox potential and to create favourable conditions for the RD [ 19 ], either through direct electron transfer from the electrodic surface to the dechlorinating microorganisms or via intermediate molecular hydrogen generation [ 20 , 21 ]. Furthermore, the less chlorinated CAHs were oxidized at the counter electrode through oxidative dechlorination (OD) stimulation via in situ oxygen evolution.…”

Supramolecular porphyrin as an improved photocatalyst for chloroform decomposition

“…1,6–8 In recent years, two major efforts have been conducted to deal with this problem: (1) the development of novel molecular sensors to detect chloroform in water, 9–11 and (2) the creation of methodologies to decompose this molecule in solution. Concerning the effort (2), although the biotechnological 12,13 and the pulsed-corona-discharges-assisted 14 approaches have been lately tested, the dye-catalyzed photochemical-based approaches stand as low-cost, non-invasive, selective, and controllable alternatives. 15–20…”

“…1,[6][7][8] In recent years, two major efforts have been conducted to deal with this problem: (1) the development of novel molecular sensors to detect chloroform in water, [9][10][11] and (2) the creation of methodologies to decompose this molecule in solution. Concerning the effort (2), although the biotechnological 12,13 and the pulsed-corona-dischargesassisted 14 approaches have been lately tested, the dye-catalyzed photochemical-based approaches stand as low-cost, noninvasive, selective, and controllable alternatives. [15][16][17][18][19][20] The excited-state dynamics exhibited by porphyrins [21][22][23][24][25] set them as versatile molecular photocatalysts 15,[26][27][28][29] that have been explored in elds like dye-sensitized solar cells, [30][31][32][33] photomedicine, [34][35][36] and articial photosynthesis.…”

Frommeccassette tordhA: a keyDehalobactergenomic neighborhood in a chloroform and dichloromethane–transforming microbial consortium

“…CF-reducing enrichment cultures typically accumulate DCM as a product of CF dehalogenation, without degradation of DCM (10)(11)(12)(13)(14). Moreover, cultures enriched on DCM can be sensitive to CF concentrations, which leads to difficulties with sequential remediation (15). For example, when CF-dechlorinating culture ACT-3 was co-cultured with DCM-degrading Consortium RM, DCM mineralization only occurred 100-200 days after CF was completely transformed to DCM (16).…”