Dechlorination of chlorophenols using magnesium–palladium bimetallic system

Patel, Upendra D.; Suresh, S.

doi:10.1016/j.jhazmat.2007.01.029

Cited by 45 publications

(16 citation statements)

References 29 publications

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“…Both phases play an active role in bimetallic systems and the alloyed shell is the catalytically active phase. Bimetallic systems are usually carried out with two different metals: one zero-valent form with a negative reduction potential and the other a transition metals with a high reduction potential as the reducing catalyst (Patel and Suresh, 2007;Gomes et al, 2013). In this process of hydrodehalogenation, the corrosion of the zero-valent metal with water will firstly generate hydrogen at room temperature and pressure.…”

Section: Catalytic Hydrodehalgenation Of Pcbs By Bimetallic Systemsmentioning

confidence: 99%

“…In this process of hydrodehalogenation, the corrosion of the zero-valent metal with water will firstly generate hydrogen at room temperature and pressure. Following that, the hydrogen is absorbed onto the surface of the catalyst to form a metal hydride as the target substrate of dehalogenation (Patel and Suresh, 2007).…”

Section: Catalytic Hydrodehalgenation Of Pcbs By Bimetallic Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Jing

Fusi

Kjellerup

2018

Front. Environ. Sci.

113

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Polychlorinated biphenyls (PCBs) are one of the persistent organic pollutants (POPs) used worldwide between the 1930 and 1980s. Many PCBs can still be found in the environment such as in soils and sediments, even though their use has been heavily restricted. This review summarizes the most frequent remediation solutions including, phytoremediation, microbial degradation, dehalogenation by chemical reagent, and PCBs removal by activated carbon. New insights that emerged from recent studies of PCBs remediation including supercritical water oxidation, ultrasonic radiation, bimetallic systems, nanoscale zero-valent iron based reductive dehalogenation and biofilm covered activated carbon, electrokinetic remediation, and nZVI particles in combination with a second metal are overviewed. Some of these methods are still in the initial development stage thereby requiring further research attention. In addition, the advantages and disadvantages of each general treatment strategy and promising technology for PCBs remediation are discussed and compared. There is no well-developed single technology, although various possible technologies have been suggested. Therefore, the possibility of using combined technologies for PCB remediation is also here investigated. It is hoped that this present paper can provide a basic framework and a more profound prospect to select successful PCB remediation strategies or combined technologies.

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Section: Catalytic Hydrodehalgenation Of Pcbs By Bimetallic Systemsmentioning

confidence: 99%

Section: Catalytic Hydrodehalgenation Of Pcbs By Bimetallic Systemsmentioning

confidence: 99%

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Jing

Fusi

Kjellerup

2018

Front. Environ. Sci.

113

View full text Add to dashboard Cite

show abstract

“…Reduc-tive dechlorination by zero-valent metals such as Mg 0 or Fe 0 is very slow and often incomplete. On the other hand, bimetallic systems such as Fe 0 /palladium or Mg 0 /palladium can achieve near complete dechlorination of recalcitrant pollutants such as DDT, DDD, DDE and chlorophenols [11][12][13]. However, advantages of bimetallic system such as high rate of reaction, efficiency, mild reaction conditions, and requirement for minimal follow-up treatment, will be defeated if reactor design does not permit the reuse and recovery of expensive catalysts such as palladium through immobilization on suitable support matrices.…”

Section: Introductionmentioning

confidence: 99%

Complete dechlorination of pentachlorophenol using palladized bacterial cellulose in a rotating catalyst contact reactor

Patel

Suresh

2008

Journal of Colloid and Interface Science

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“…9 Therefore, a large number of methods have been developed to remove chlorophenols from water, including adsorption, 10 biological degradation 11 and electrochemical degradation. 12 However, adsorption merely concentrates chlorophenols, but does not degrade them into less toxic compounds.…”

Section: -8mentioning

confidence: 99%

Cu₂(OH)PO₄/reduced graphene oxide nanocomposites for enhanced photocatalytic degradation of 2,4-dichlorophenol under infrared light irradiation

Zhang

Zhou

et al. 2018

RSC Adv.

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Sparked by the growing environmental crises, photocatalytic degradation of chlorophenols with inexhaustible solar energy is expected to be converted into actual applications. Here, we report the preparation of the nanocomposite of Cu 2 (OH)PO 4 and reduced graphene oxide (Cu 2 (OH)PO 4 /rGO) through a one-step hydrothermal method and examined its infrared-light photocatalytic activity in the degradation of 2,4-dichlorophenol (2,4-DCP). As evidenced by the absorption spectra and the degradation of 2,4-DCP, Cu 2 (OH)PO 4 /rGO exhibited enhanced infrared light-driven photocatalytic activity compared to pure Cu 2 (OH)PO 4 and was very stable even after repeated cycling. More importantly, the introduction of hydrogen peroxide (H 2 O 2 ) could combine the photocatalytic and photoFenton effects into one reaction system and maximize the infrared light photocatalytic efficiency.Typically, the rate constant of Cu 2 (OH)PO 4 /rGO and H 2 O 2 was more than 6.25 times higher than that of only Cu 2 (OH)PO 4 /rGO, and almost 10 times greater than the value for pure Cu 2 (OH)PO 4 . Further, a plausible mechanism for the enhanced photocatalytic properties of Cu 2 (OH)PO 4 /rGO has been discussed. These findings may help the development of novel hybrid photocatalysts with enhanced infrared light photocatalytic activity for applications in the treatment of chlorophenol-contaminated wastewater.

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Dechlorination of chlorophenols using magnesium–palladium bimetallic system

Cited by 45 publications

References 29 publications

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Complete dechlorination of pentachlorophenol using palladized bacterial cellulose in a rotating catalyst contact reactor

Cu₂(OH)PO₄/reduced graphene oxide nanocomposites for enhanced photocatalytic degradation of 2,4-dichlorophenol under infrared light irradiation

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Dechlorination of chlorophenols using magnesium–palladium bimetallic system

Cited by 45 publications

References 29 publications

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Remediation of Polychlorinated Biphenyls (PCBs) in Contaminated Soils and Sediment: State of Knowledge and Perspectives

Complete dechlorination of pentachlorophenol using palladized bacterial cellulose in a rotating catalyst contact reactor

Cu2(OH)PO4/reduced graphene oxide nanocomposites for enhanced photocatalytic degradation of 2,4-dichlorophenol under infrared light irradiation

Contact Info

Product

Resources

About

Cu₂(OH)PO₄/reduced graphene oxide nanocomposites for enhanced photocatalytic degradation of 2,4-dichlorophenol under infrared light irradiation