Pentachlorobenzene sequestration in sediment by carbon rich amendment
| Autor: | Marijana Kragulj Isakovski, Jelena Beljin, Srđan Rončević, Snezana Maletic, Marko Grgić, Jelena Tričković, Tijana Zeremski |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental remediation
General Chemical Engineering 0211 other engineering and technologies Amendment 02 engineering and technology 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Pentachlorobenzene pentachlorobenzene Biochar remediation medicine 0105 earth and related environmental sciences Pollutant 021110 strategic defence & security studies Chemistry Sediment sequestration General Chemistry 6. Clean water sediment 13. Climate action Bioaccumulation Environmental chemistry bioavailability Activated carbon medicine.drug |
| Zdroj: | Hemijska Industrija |
| Popis: | Organic pollutants in sediments are a worldwide problem because sediments act as sinks for hydrophobic, toxic, persistent and bioaccumulative hazardous compoundssuch as penta-chlorobenzene (PeCB). PeCB can be involved in adsorption, desorption and transformation processes and can be made available to benthic organisms through the sediment?water interface. In order to reduce the risk, this study investigates effects of the dose and contact time between sediment and carbon-rich amendments (activated carbon (AC), biochar (BC) and hummus (HC)) on the effectiveness of detoxification. Four doses of carbon-rich amendments (0.5-10 %) and four equilibrations contact times (14 - 180 days) were investigated. The present research highlights the need for further examination and process optimization of different carbon-rich materials used for contaminant removal. Results have shown that the smallest dose (0.5 %) of investigated sorbents was sufficient to reduce the bioavailable fraction of PeCB below 5 %, and the ageing process after 14 days for AC and 30 days for HM and BC negligibly influenced the bioavailable fraction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|