Aquatic sediment represents a sink for toxic and persistent chemicals such as hexachlorobenzene (HCB) and lindane
(γ-HCH). This paper investigates the possibility of reducing the environmental risks associated with the presence of
these pollutants in sediments by amending the sediment with carbonized waste biomass to sequester the contaminants
and render them biologically unavailable. Sugar beet pulp (SB) and miscanthus (M) waste biomass were converted by
thermochemical methods: (1) hydrochar (HTC) - hydrothermal carbonation at three temperatures (180oC, 200oC, 220oC)
and (2) biochar (BC) - slow pyrolysis up to 400oC. The effects of the dose and contact time between the sediment and
the carbon-rich amendments on the effectiveness of the imobilization are estimated. Three doses of carbonized biomass
(1%, 5% and 10%), and three equilibration contact times (14, 90 and 180 days) were investigated. Results have shown
that the bioavailable fraction of γ-HCH and HCB decreased ...significantly in comparison to the unamended sediment
(from 66.4% for γ-HCH, and 74.6% for HCB, to <2% for both compounds). The sequestration potential of amended
sediment increases in the sequence HTC_SB <HTC_M <BC_SB <BC_M. Additionally, the increase in the HTC prepa⁃
ration temperature further increases sequestration potential and reduction of bioavailable fractions both compounds in
sediment. The increase in the applied dose and the aging time of the prepared mixtures further reduce the bioavailable
fraction, compared to the untreated sediment. Toxicity of amended sediment assessed by Vibrio fishery luminescence in⁃
hibition test and by measuring Zea mays germination and biomass yield was significantly reduced in the BC amended
sediment and increased in the HTC amended sediment. γ-HCH and HCB accumulation in the Zea mays biomass in the
unamended sediment were significantly higher than in the all HTC and BC amended sediment. The obtained results
showed that the remediation potential of the produced biochars and hydrochars significantly depends on (1) the feed⁃
stock characteristics, (2) the process conditions for the conversion of biomass, and (3) the physicochemical properties of
the pollutants.
TY - CONF
AU - Maletić, Snežana
AU - Grgić, Marko
AU - Kragulj Isakovski, Marijana
AU - Mihajlović, Marija
AU - Petrović, Jelena
AU - Zeremski, Tijana
AU - Rončević, Srđan
PY - 2019
UR - https://ritnms.itnms.ac.rs/handle/123456789/867
AB - Aquatic sediment represents a sink for toxic and persistent chemicals such as hexachlorobenzene (HCB) and lindane
(γ-HCH). This paper investigates the possibility of reducing the environmental risks associated with the presence of
these pollutants in sediments by amending the sediment with carbonized waste biomass to sequester the contaminants
and render them biologically unavailable. Sugar beet pulp (SB) and miscanthus (M) waste biomass were converted by
thermochemical methods: (1) hydrochar (HTC) - hydrothermal carbonation at three temperatures (180oC, 200oC, 220oC)
and (2) biochar (BC) - slow pyrolysis up to 400oC. The effects of the dose and contact time between the sediment and
the carbon-rich amendments on the effectiveness of the imobilization are estimated. Three doses of carbonized biomass
(1%, 5% and 10%), and three equilibration contact times (14, 90 and 180 days) were investigated. Results have shown
that the bioavailable fraction of γ-HCH and HCB decreased significantly in comparison to the unamended sediment
(from 66.4% for γ-HCH, and 74.6% for HCB, to <2% for both compounds). The sequestration potential of amended
sediment increases in the sequence HTC_SB <HTC_M <BC_SB <BC_M. Additionally, the increase in the HTC prepa⁃
ration temperature further increases sequestration potential and reduction of bioavailable fractions both compounds in
sediment. The increase in the applied dose and the aging time of the prepared mixtures further reduce the bioavailable
fraction, compared to the untreated sediment. Toxicity of amended sediment assessed by Vibrio fishery luminescence in⁃
hibition test and by measuring Zea mays germination and biomass yield was significantly reduced in the BC amended
sediment and increased in the HTC amended sediment. γ-HCH and HCB accumulation in the Zea mays biomass in the
unamended sediment were significantly higher than in the all HTC and BC amended sediment. The obtained results
showed that the remediation potential of the produced biochars and hydrochars significantly depends on (1) the feed⁃
stock characteristics, (2) the process conditions for the conversion of biomass, and (3) the physicochemical properties of
the pollutants.
PB - Shenyang Agricultural University, Soil Science Soc. Of China
C3 - The First International Conference on Biochar Research and Application
T1 - Toxicity/bioavailability assessment of pesticide contaminated sediments amended with carbonized sugar beet pulp and miscanthus
EP - 113
SP - 113
ER -
@conference{
author = "Maletić, Snežana and Grgić, Marko and Kragulj Isakovski, Marijana and Mihajlović, Marija and Petrović, Jelena and Zeremski, Tijana and Rončević, Srđan",
year = "2019",
abstract = "Aquatic sediment represents a sink for toxic and persistent chemicals such as hexachlorobenzene (HCB) and lindane
(γ-HCH). This paper investigates the possibility of reducing the environmental risks associated with the presence of
these pollutants in sediments by amending the sediment with carbonized waste biomass to sequester the contaminants
and render them biologically unavailable. Sugar beet pulp (SB) and miscanthus (M) waste biomass were converted by
thermochemical methods: (1) hydrochar (HTC) - hydrothermal carbonation at three temperatures (180oC, 200oC, 220oC)
and (2) biochar (BC) - slow pyrolysis up to 400oC. The effects of the dose and contact time between the sediment and
the carbon-rich amendments on the effectiveness of the imobilization are estimated. Three doses of carbonized biomass
(1%, 5% and 10%), and three equilibration contact times (14, 90 and 180 days) were investigated. Results have shown
that the bioavailable fraction of γ-HCH and HCB decreased significantly in comparison to the unamended sediment
(from 66.4% for γ-HCH, and 74.6% for HCB, to <2% for both compounds). The sequestration potential of amended
sediment increases in the sequence HTC_SB <HTC_M <BC_SB <BC_M. Additionally, the increase in the HTC prepa⁃
ration temperature further increases sequestration potential and reduction of bioavailable fractions both compounds in
sediment. The increase in the applied dose and the aging time of the prepared mixtures further reduce the bioavailable
fraction, compared to the untreated sediment. Toxicity of amended sediment assessed by Vibrio fishery luminescence in⁃
hibition test and by measuring Zea mays germination and biomass yield was significantly reduced in the BC amended
sediment and increased in the HTC amended sediment. γ-HCH and HCB accumulation in the Zea mays biomass in the
unamended sediment were significantly higher than in the all HTC and BC amended sediment. The obtained results
showed that the remediation potential of the produced biochars and hydrochars significantly depends on (1) the feed⁃
stock characteristics, (2) the process conditions for the conversion of biomass, and (3) the physicochemical properties of
the pollutants.",
publisher = "Shenyang Agricultural University, Soil Science Soc. Of China",
journal = "The First International Conference on Biochar Research and Application",
title = "Toxicity/bioavailability assessment of pesticide contaminated sediments amended with carbonized sugar beet pulp and miscanthus",
pages = "113-113"
}
Maletić, S., Grgić, M., Kragulj Isakovski, M., Mihajlović, M., Petrović, J., Zeremski, T.,& Rončević, S.. (2019). Toxicity/bioavailability assessment of pesticide contaminated sediments amended with carbonized sugar beet pulp and miscanthus. in The First International Conference on Biochar Research and Application
Shenyang Agricultural University, Soil Science Soc. Of China., 113-113.
Maletić S, Grgić M, Kragulj Isakovski M, Mihajlović M, Petrović J, Zeremski T, Rončević S. Toxicity/bioavailability assessment of pesticide contaminated sediments amended with carbonized sugar beet pulp and miscanthus. in The First International Conference on Biochar Research and Application. 2019;:113-113..
Maletić, Snežana, Grgić, Marko, Kragulj Isakovski, Marijana, Mihajlović, Marija, Petrović, Jelena, Zeremski, Tijana, Rončević, Srđan, "Toxicity/bioavailability assessment of pesticide contaminated sediments amended with carbonized sugar beet pulp and miscanthus" in The First International Conference on Biochar Research and Application (2019):113-113.
