Lindane and HEXACHLOROBENZENE (cas 118-74-1) sequestration and detoxification in contaminated sediment amended with carbon-rich sorbents
-
Add time:08/29/2019 Source:sciencedirect.com
Sediment represents a sink for toxic and persistent chemicals such as HEXACHLOROBENZENE (cas 118-74-1) (HCB) and lindane (γ-HCH). This paper investigates the possibility of reducing the risks associated with the presence of these pollutants in sediments by amending the sediment with carbon-rich materials (activated carbon (AC) and humus (HC)) to sequester the contaminants and render them biologically unavailable. The effects of the dose and contact time between the sediment and the carbon-rich amendments on the effectiveness of the detoxification are estimated. Four doses of carbon-rich amendments (0.5–10%) and four equilibration contact times (14–180 days) were investigated. Results have shown that the bioavailable fraction of γ-HCH and HCB decreased significantly in comparison to the unamended sediment. Regarding the AC amendments, almost 100% for both compounds; and for HC amendments around 95% for γ-HCH, and 75% for HCB. Aging caused further reductions in the bioavailable fraction, compared to the untreated sediment. Phytotoxicity tests showed that Zea mays accumulated significantly higher amount of γ-HCH and HCB from unamended sediment, comparing to Cucurbita pepo and Lactuca sativa. Toxicity of HC and AC amended sediment assessed by Vibrio fischeri luminescence inhibition test and by measuring Zea mays germination and biomass yield was significantly reduced in the amended sediment samples. γ-HCH and HCB accumulation in the Zea mays biomass in the unamended sediment were a significantly higher than in the all HC and AC amended sediment. Both sorbents show potential to be used as remediation agents for organically contaminated sediment, but AC exhibited the better performance.
We also recommend Trading Suppliers and Manufacturers of HEXACHLOROBENZENE (cas 118-74-1). Pls Click Website Link as below: cas 118-74-1 suppliers
Prev:Review articleHEXACHLOROBENZENE (cas 118-74-1) as a persistent organic pollutant: Toxicity and molecular mechanism of action
Next:Mechanism of the rapid mechanochemical degradation of HEXACHLOROBENZENE (cas 118-74-1) with silicon carbide as an additive) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- HEXACHLOROBENZENE (cas 118-74-1)09/04/2019
- Environmental pollutant HEXACHLOROBENZENE (cas 118-74-1) induces hypertension in a rat model09/03/2019
- Mechanochemical mechanism of rapid dechlorination of HEXACHLOROBENZENE (cas 118-74-1)09/02/2019
- Partitioning of HEXACHLOROBENZENE (cas 118-74-1) between human milk and blood lipid☆09/01/2019
- Review articleImpact of endocrine disruptor HEXACHLOROBENZENE (cas 118-74-1) on the mammary gland and breast cancer: The story thus far08/31/2019
- Mechanism of the rapid mechanochemical degradation of HEXACHLOROBENZENE (cas 118-74-1) with silicon carbide as an additive08/30/2019
- Review articleHEXACHLOROBENZENE (cas 118-74-1) as a persistent organic pollutant: Toxicity and molecular mechanism of action08/28/2019
- Atmospheric oxidation of HEXACHLOROBENZENE (cas 118-74-1): New global source of pentachlorophenol08/27/2019
- Chapter Seventeen - Flavin-N5-oxide intermediates in dibenzothiophene, uracil, and HEXACHLOROBENZENE (cas 118-74-1) catabolism08/26/2019