Dechlorination of chlorinated phenols by catalyzed and uncatalyzed Fe(0) and Mg(0) particles

Dechlorination of chlorophenols using magnesium–palladium bimetallic system

“…Dechlorination experiment described by Morales et al [19] was carried out by taking 1 g Mg 0 and 10 mg K 2 PdCl 6 (concentrations equivalent to 2659 ppm) in a test tube followed by the addition of 5 mL of 2.48 mM PCP prepared in 1:1 (v/v) water:2-propanol. After initial mixing on high speed vortex mixer, the test tubes were maintained on a translatory shaker for 48 h at 30 • C. The method used for quantification of sorption of PCP and its reaction products on solid surfaces following completion of the reaction is described in Section 2.4.…”

“…This solution was analyzed to determine the concentration of sorbed compounds. The protocol described above was also used to quantify sorption of PCP and products following reactions conducted as per Morales et al [19], except that concentrated HCl (1.5 mL for 5 mL reaction volume) was used to dissolve the magnesium granules completely.…”

“…PCP dechlorination was studied earlier by Morales et al [19] using Mg/Pd system. The concentration of PCP used was very high (2.48 mM, ∼660 mg L −1 ) as compared to its solubility in plain water (∼10 mg L −1 ) and therefore solubilized in 1:1 water-2-propanol mixture (v/v).…”

“…Zero-valent metals and bimetallic systems have been successfully utilized to dechlorinate chlorinated organics [17][18][19][20][21]. Such reactions are much faster as compared to biodegradation.…”

Effects of solvent, pH, salts and resin fatty acids on the dechlorination of pentachlorophenol using magnesium–silver and magnesium–palladium bimetallic systems

“…In the last decade, extensive research has been carried out on the application of bimetallic systems to dechlorinate chlorinated organic compounds [14][15][16][17][18]. Bimetallic systems make use of two metals, one in the zero-valent form (with a negative reduction potential like Mg +2 /Mg 0 , Fe +2 /Fe 0 , etc.)…”