Reductive dechlorination of γ-hexachlorocyclohexane using Fe–Pd bimetallic nanoparticles

Nagpal, Varima; Bokare, Alok Diwakar; Chikate, Rajeev C.; Rode, Chandrashekhar V.; Paknikar, Kishore M.

doi:10.1016/j.jhazmat.2009.10.063

Cited by 100 publications

(81 citation statements)

References 44 publications

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“…In a recent study nano scale Fe-Pd bimetallic particles have been used to dechlorinate lindane to form cyclohexane at a concentration of 5 mg L -1 [22]. But complete degradation of lindane is not achieved.…”

Section: Discussionmentioning

confidence: 99%

Biodegradation of Hexachlorocyclohexane (HCH) Isomers by White Rot Fungus, Pleurotus florida

Mohapatra¹

2015

J Bioremed Biodeg

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Hexachlorocyclohexane (HCH) isomers are reported to persist in the environment long after their usage is discontinued. Pleurotus florida, a white rot fungus, was found to degrade not only γ-HCH but also its more persistent isomers individually as well as a mixture in a Raper's complete medium. Within 30 days γ-HCH degraded completely, whereas other 3 isomers degraded 92-99%. The degradation rate was γ-HCH>β-HCH>α-and δ-HCH. The mycelium biomass was free from γ-HCH residues but accumulated about 3% residues of other 3 isomers. Presence of intermediate metabolites was not detected indicating complete mineralization of HCH isomers. Ability of P. florida to degrade HCH isomers was further studied in soil by amendment with spent mushroom substrate (SMS). SMS addition could marginally increase degradation of α-, β-and δ-HCH, but significantly increased degradation of γ-HCH. When the study was repeated similar trend was observed. The half-life of degradation of γ-HCH was 439-570 days in un-amended soil while 37-42 days in SMS amended soil. For other 3 stable isomers the half-life was reduced from 686-828 to 88-125 days by SMS amendments. These results indicate that SMS from P. florida cultivation can be utilized for bioremediation of HCH contaminated site.

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Section: Discussionmentioning

confidence: 99%

Biodegradation of Hexachlorocyclohexane (HCH) Isomers by White Rot Fungus, Pleurotus florida

Mohapatra¹

2015

J Bioremed Biodeg

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“…For instance, toxic gases such as carbon monoxide [29], toluene [30] and gases containing chlorinated compounds [31] have been successfully removed with platinum, titanium oxide and Fe-Pd bimetallic nanoparticles, respectively. Although it is probable that new applications will appear in the following years, it seems to be a common consensus about the potential of using titanium oxide nanoparticles for the reduction of polluted gases [32] since, due to their photocatalytic properties, titanium oxide nanoparticles can remove volatile organic compounds and nitrogen oxides from the air P r e -p r i n t and turn them into less harmful molecules.…”

Section: Gas Treatment With Nanoparticlesmentioning

confidence: 99%

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Sánchez¹,

Recillas²,

Font³

et al. 2011

TrAC Trends in Analytical Chemistry

119

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This study presents the recent developments on the use of inorganic nanoparticles for environmental remediation in soil, water and gas polluted streams. The number of publications on these topics has grown exponentially in recent years, especially those focused on the wastewater treatment. Among them, the removal of heavy metals has become the most popular, although some works are related to the use of nanomaterials for the elimination of nutrients such as nitrogen and some persistent organic pollutants.However, this growth has not been accompanied by the knowledge about the behavior of nanoparticles once used and released to the environment. The current situation of nanoparticles toxicology (nanotoxicology) is also commented in this study. It is remarkable the high number of different toxicology tests that have been applied to nanoparticles, which often makes the results very difficult to interpret or generalize.Bioluminescence test, Daphnia magna and other published tests are analyzed in detail, jointly with some preliminary results obtained in our works.

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“…16 Catalytic support for HDC also plays a key role in both the catalytic activity and stability of the metals, and alumina and activated carbon (AC) are the support systems most reported in the literature. 17,18 Bimetallic nanoparticles (usually Pd decorated with another metal) exhibit superior catalytic performance compared with pure Pd catalysts due to their enhanced tunability in chemical compositions and metal structures, 19 and include compounds such as Pd-Fe, 20 Pd-Al,…”

Section: Introductionmentioning

confidence: 99%

Performance of palladium–tin bimetallic catalysts supported on activated carbon for the hydrodechlorination of 4-chlorophenol

Fang

2017

RSC Adv.

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The influence of Sn on the activity and selectivity of Pd catalysts for the hydrodechlorination (HDC) of 4-chlorophenol (CP) in an aqueous phase was studied. The Pd-Sn bimetallic catalysts were prepared using the coimpregnation method and characterised using temperature-programmed reduction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and hydrogen pulse chemisorption measurements. The results showed that when the molar ratio of Sn/Pd is less than 1/1, the addition of Sn to Pd catalysts improves the dispersibility of Pd particles and improves the catalytic activity of HDC.

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Reductive dechlorination of γ-hexachlorocyclohexane using Fe–Pd bimetallic nanoparticles

Cited by 100 publications

References 44 publications

Biodegradation of Hexachlorocyclohexane (HCH) Isomers by White Rot Fungus, Pleurotus florida

Biodegradation of Hexachlorocyclohexane (HCH) Isomers by White Rot Fungus, Pleurotus florida

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Performance of palladium–tin bimetallic catalysts supported on activated carbon for the hydrodechlorination of 4-chlorophenol

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