Reductive dechlorination of hexachlorobenzene by Cu/Fe bimetal in the presence of nonionic surfactant

A new approach to 4-chlorophenol dechlorination on monometallic copper compared to its Cu/Fe bimetallic system

“…or Fe supported on Cu has a higher activity compared to monometallic systems, which can be explained by the indirect HDC mechanism [11,13,17]. Previous research has also shown that Cu/Fe performs better than Fe for the dechlorination reaction [26][27][28]. The reductant for the bimetallic systems(Cu/Fe, Cu/Ni) is different than for monometallic Cu 0 .…”

“…In addition, Cu can also hydrogenate and promote H 2 dissociation, but it is much weaker in comparison to Pd and Ni. Thus, copper has showed poor activity in the HDCs reactions [20][21][22]. This research shows a phenomena that cannot be understood by traditional dechlorination theory using monometallic Cu 0 to dechlorinate a typical toxic refractory aromatic chlorophenol, 4-CP.…”

Advances in Electrokinetic Remediation for the Removal of Organic Contaminants in Soils

“…Among the dispersants proposed aluminum lactate presents good characteristics to be used in large scale application. Other metallic catalysts such as Cu/Fe or Pd/Fe bimetal microscale particles were satisfactorily used for the remediation of soils with organochlorines.. Dechlorination of hexachlorobenzene up to 98% was achieved with Cu/Fe [51] and only 60% with Pd/Fe [52].…”

Remediation of Tetrachloroethylene -Contaminated Soil with Zero Valent Iron Utilizing Electrokinetic Reactors

“…Therefore, surfactants can be used to mediate mass transport in the dechlorination process. Surfactant enhanced remediation has been suggested as a promising technology for the remediation of contaminated soils and groundwater (Zheng et al, 2009).…”