Quantification of physical properties of dredged sediments during physical ripening

Vermeulen, J.; Dijk, S.G. van; Grotenhuis, J.T.C.; Rulkens, W.H.

doi:10.1016/j.geoderma.2004.12.040

Cited by 21 publications

(15 citation statements)

References 53 publications

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“…Oxygen concentration gradients will develop as a result of physical and biochemical ripening [2]. The physical ripening processes were studied in a separate study [11]. With the data and information from that study, combined with the data from the current study, conditions during temporary disposal can be optimized using a combination of existing water‐ and oxygen‐transport and ripening models.…”

Section: Introductionmentioning

confidence: 99%

Biochemical ripening of dredged sediments. Part 1. Kinetics of biological organic matter mineralization and chemical sulfur oxidation

Vermeulen

Gool

Dorleijn

et al. 2007

Enviro Toxic and Chemistry

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After dredged sediments have settled in a temporary upland disposal site, ripening starts, which turns waterlogged sediment into aerated soil. Aerobic biological mineralization of organic matter (OM) and chemical oxidation of reduced sulfur compounds are the major biochemical ripening processes. Quantitative data describing these processes are scarce. Therefore, aerobic oxidation and mineralization of five previously anaerobic dredged sediments were studied during a 160-d laboratory incubation experiment at 30 degrees C. A double exponential decay model could adequately describe sulfur oxidation and OM mineralization kinetics. During the first 7 d of incubation, 23 to 80% of the total sulfur was oxidized, after which no further sulfur oxidation was observed. Oxygen used for sulfur oxidation amounted up to 95% of the total oxygen uptake in the first 7 d and up to 45% of the oxygen uptake during the entire incubation period. Mineralization rates of the rapidly mineralizable OM fractions that degraded during the first 14 to 28 d of incubation were 10(2) to 10(3) times higher than the mineralization rates of the slowly mineralizable OM during the remaining period. First-order mineralization rates of the slowly mineralizable OM were 0.22 x 10(-3) to 0.54 x 10(-3) d(-1) and can be compared with those of terrestrial soils. Yields of biomass on substrate ranged from 0.08 to 0.45 g C(biomass)/g C(OM) and appeared to be higher for rapidly mineralizing OM than for slowly mineralizing OM. The results of this study can be used to optimize conditions during temporary disposal of sediments, to estimate the potential decrease in OM, and for future studies on the possible link between OM mineralization and degradation of hydrophobic organic contaminants.

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Section: Introductionmentioning

confidence: 99%

Biochemical ripening of dredged sediments. Part 1. Kinetics of biological organic matter mineralization and chemical sulfur oxidation

Vermeulen

Gool

Dorleijn

et al. 2007

Enviro Toxic and Chemistry

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“…Specially designed microdepots were used to physically ripen (consolidate) three different sediments (ROSL, WOGR, LERI) to different extents. This laboratory ripening of the sediments, which resulted in disc‐shaped pellets with a diameter of approximately 45 mm and a height of approximately 20 mm, was described extensively in an earlier study [15]. In the present study, the matrix potential (ψ m ), a measure to quantify the moisture condition of ripening sediments, of the water in the pellets was adjusted to six different values: ψ m = −100, −333, −1,000, −2,000, −16,000, and — 1,000,000 hPa (all in triplicate).…”

Section: Methodsmentioning

confidence: 99%

Biochemical ripening of dredged sediments. Part 2. Degradation of polycyclic aromatic hydrocarbons and total petroleum hydrocarbons in slurried and consolidated sediments

Vermeulen

Gool

Mentink

et al. 2007

Enviro Toxic and Chemistry

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Ripening of polycyclic aromatic hydrocarbons (PAH) and total petroleum hydrocarbons (TPH) polluted dredged sediment can be considered as a bioremediation technique. Aerobic biodegradation of PAH and TPH was studied in five previously anaerobic-slurried sediments during a 350-d laboratory incubation experiment. In addition, oxygen penetration and degradation of PAH and TPH were studied in three consolidated (physically ripened) sediments. All experiments were conducted in the laboratory at 30 degrees C. A double exponential decay model could adequately describe PAH and TPH degradation kinetics in the slurried sediments. First-order degradation rate constants for the rapidly degradable fractions (12-58%) were approximately 0.13 and 0.058 d(-1) for PAH and TPH, respectively, whereas the rate constants for the slowly degradable fractions were approximately 0.36 x 10(-3) (PAH) and 0.66 x 10(-3) d(-1) (TPH). Rate constants for the rapidly and slowly degrading fractions have the same order of magnitude as the mineralization rate constants of the rapidly and slowly mineralizing organic matter (OM) fractions in the sediments. Oxygen uptake by degradation of PAH and TPH was negligible compared to the oxygen uptake by sulfur oxidation and OM mineralization. In consolidated sediments, PAH and TPH degradation was limited to the oxygenated part. Amounts of PAH and TPH that degraded in the oxygenated parts of the consolidated sediments during 21 d of incubation were similar to the amounts that degraded during 21 d in the slurried sediments.

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“…conversion from sediment to soil, the physical, chemical and biological properties of the sediment are significantly affected (Vermeulen et al 2005(Vermeulen et al , 2007a. During physical ripening (Vermeulen et al 2005), a colloidal sediment dehydrates and shrinks, forms aggregates and increases its hydraulic conductivity. Structure develops and, with it, the formation of macropores.…”

Section: Phytostabilisationmentioning

confidence: 99%

Phytoremediation as a management option for contaminated sediments in tidal marshes, flood control areas and dredged sediment landfill sites

Bert

Seuntjens

Dejonghe

et al. 2009

Environ Sci Pollut Res

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Quantification of physical properties of dredged sediments during physical ripening

Cited by 21 publications

References 53 publications

Biochemical ripening of dredged sediments. Part 1. Kinetics of biological organic matter mineralization and chemical sulfur oxidation

Biochemical ripening of dredged sediments. Part 1. Kinetics of biological organic matter mineralization and chemical sulfur oxidation

Biochemical ripening of dredged sediments. Part 2. Degradation of polycyclic aromatic hydrocarbons and total petroleum hydrocarbons in slurried and consolidated sediments

Phytoremediation as a management option for contaminated sediments in tidal marshes, flood control areas and dredged sediment landfill sites

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