Topic
Dichlorophenol
About: Dichlorophenol is a research topic. Over the lifetime, 244 publications have been published within this topic receiving 4248 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: The specific cross-acclimation patterns observed for monochlorophenol degradation demonstrated the existence of two unique microbial activities that were in turn different from fresh sludge.
Abstract: We investigated the anaerobic biodegradation of mono- and dichlorophenol isomers by fresh (unacclimated) sludge and by sludge acclimated to either 2-chlorophenol, 3-chlorophenol, or 4-chlorophenol Biodegradation was evaluated by monitoring substrate disappearance and, in selected cases, production of 14CH4 from labeled substrates In unacclimated sludge, each of the monochlorophenol isomers was degraded The relative rates of disappearance were in this order: ortho greater than meta greater than para For the dichlorophenols in unacclimated sludge, reductive dechlorination of the Cl group ortho to phenolic OH was observed, and the monochlorophenol compounds released were subsequently degraded 3,4-Dichlorophenol and 3,5-dichlorophenol were persistent Sludge acclimated to 2-chlorophenol cross-acclimated to 4-chlorophenol but did not utilize 3-chlorophenol This sludge also degraded 2,4-dichlorophenol Sludge acclimated to 3-chlorophenol cross-acclimated to 4-chlorophenol but not to 2-chlorophenol This sludge degraded 3,4- and 3,5-dichlorophenol but not 2,3- or 2,5-dichlorophenol The specific cross-acclimation patterns observed for monochlorophenol degradation demonstrated the existence of two unique microbial activities that were in turn different from fresh sludge The sludge acclimated to 4-chlorophenol could degrade all three monochlorophenol isomers and 2,4- and 3,4-dichlorophenol The active microbial population in this sludge appeared to be a mixture of populations present in the 2-chlorphenol- and 3-chlorophenol-acclimated sludges, both of which could utilize 4-chlorophenol Experiments with 14C-radiolabeled p-chlorophenol, o-chlorophenol, and 2,4-dichlorophenol demonstrated that these compounds were converted to 14CH4 and 14CO2
280 citations
TL;DR: In this article, the photocatalytic degradation of phenolic compounds in aqueous solution was investigated in TiO2/persulphate/UV-vis and ZnO/persulate/UV -vis light.
132 citations
TL;DR: The photo-Fenton process using potassium ferrioxalate as a mediator in the photodegradation reaction of organochloride compounds in an aqueous medium was investigated in this paper.
131 citations
TL;DR: The photocatalytic activity of sulphonated cobalt phthalocyanine immobilized onto MCM-41 was investigated for decomposition of 2,4-dichlorophenol in aqueous solutions and it was revealed that the photocatalyst is very active in degradation of 2-4-DCP.
122 citations
TL;DR: The results demonstrated that more chlorinated phenols are more difficult to mineralize; however for all the tested CPs, almost quantitative release of chloride ions was obtained after 6 h of treatment.
Abstract: This study reports the kinetics of the degradation of several chlorophenols (CPs), such as monochlorophenols (2-chlorophenol and 4-chlorophenol), dichlorophenols (2,4-dichlorophenol and 2,6- dichlorophenol), trichlorophenols (2,3,5- trichlorophenol and 2,4,5-trichlorophenol), 2,3,5,6-tetrachlorophenol, and pentachlorophenol, by the electro-Fenton process using a carbon felt cathode and a Pt anode The effect of number and the position of the chlorine atoms in the aromatic ring on the oxidative degradation rate was evaluated and discussed The oxidation reaction of all the CPs with hydroxyl radicals evidenced a pseudo-first-order kinetics and the rate constant decreased with increasing the number of chlorine atoms The absolute rate constant of second-order reaction kinetics between CPs and •OH was determined by the competition kinetics method in the range of (356−775) × 109 M−1 s−1 and follows the same sequence of the apparent rate constants The mineralization of several CPs and of a mixture of all CPs
113 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 11 |
| 2020 | 4 |
| 2019 | 7 |
| 2018 | 4 |
| 2017 | 9 |
| 2016 | 10 |