Partitioning of organic matter in Boom Clay: Leachable vs mobile organic matter

Durce, Delphine; Bruggeman, Christophe; Maes, N.; Ravestyn, L. Van; Brabants, Gert

doi:10.1016/j.apgeochem.2015.08.009

Cited by 19 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results on Tégulines soft clay rock (Fig. 3, b) are in line with data previously published on COx hard clay rock (Chen et al, 2018;Durce et al, 2015;Rasamimanana et al, 2017b). A linear correlation is observed between retention of solutes and hydrophilicity of sorbates ant that solvation and retention mechanism involve similar interactions.…”

Section: Retention Of Hydrophilic Compounds (Log Papp < -1)supporting

confidence: 90%

Mobility of organic compounds in a soft clay-rich rock (Tégulines clay, France)

et al. 2021

View full text Add to dashboard Cite

Section: Retention Of Hydrophilic Compounds (Log Papp < -1)supporting

confidence: 90%

Mobility of organic compounds in a soft clay-rich rock (Tégulines clay, France)

et al. 2021

View full text Add to dashboard Cite

“…It has to be remembered, however, that other soil characteristics changed in the studied soils that are known to affect the decomposition of added organic material. Soil characteristics such as pH [18], CEC, soil structure [19], sodicity [20], clay content [21], specific surface area of the clay, and the nature of the clay mineral [22] affect mineralization of organic material.…”

Section: Discussionmentioning

confidence: 99%

“…As such, the EC and the other measured soil characteristics did not determine removal of PAHs from soil and another unmeasured factor or factors intervened. These factors, such as specific surface area of the clays and/ or the nature of the clay mineral [21][22], might have affected availability and thus the removal of PAHs from soil. It can be speculated that the 'availability' or 'bioaccessibility' of the studied PAHs might have been another factor that determined the removal of ANTHR and PHEN from soil [35].…”

Section: Discussionmentioning

confidence: 99%

Dissipation of Phenanthrene and Anthracene from Soil with Increasing Salt Content Amended with Wastewater Sludge

Fernández-Luqueño

Cabrera-Lazaro

Corlay-Chee

et al. 2017

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

The removal of PAHs was stimulated by wastewater sludge in an alkaline saline soil of the former Lake Texcoco, but not always to the same extent. We investigated how a varying electrolytic conductivity (EC) affected the removal of phenanthrene (PHEN) and anthracene (ANTHR) from wastewater sludge-amended soils. Soil with EC 6, 30, 80, and 146 dS m -1 was contaminated with PHEN and ANTHR and amended with or without wastewater sludge, while emissions of CO 2 and concentrations of ammonium, nitrite, and nitrate were monitored. A decrement on the concentrations of PHEN and ANTHR was observed and was faster in soil with EC 6 dS m -1 than in soil with EC 30 dS m -1 and 80 dS m -1, and was slower than in soil with EC 146 dS m -1 . Adding wastewater sludge to soil reduced the concentration of PHEN and ANTHR in soil after 56 days. Spiking soil with PAHs or amending it with wastewater sludge increased the CO 2 emission rate, but decreased at higher EC. The concentration of NO 3 -decreased when soil was spiked with PAHs and amended with sludge, except in soil with EC 146 dS m -1. It was found that the removal of PAHs was not inhibited by salt content and a principal component analysis indicated that none of the measured soil characteristics, i.e., pH, EC, particle size distribution, water-holding capacity, or organic C content predicted the removal of ANTHR or PHEN from contaminated soil. The application of wastewater sludge increased the dissipation of PHEN and ANTHR after 56 days.

show abstract

“…The concentration of dissolved organic carbon in DOM_NaClO 4 was determined by TOC measurements performed on a TOC-L (Shimadzu) carbon analyser, as described in Durce et al [3]. The size distribution of DOM_NaClO 4 was measured by size exclusion chromatography, as described in Durce et al [13]. The obtained size distribution is reported in the Supplementary Materials (Figure S1).…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…As with the other clay-rich host rocks, the main sorbing groups of minerals constituting BC are illite and smectite, though their content varies with depth [11]. The specificity of BC, in comparison with other investigated host rocks, is its relatively high concentration of organic matter (OM), which represents 1 to 5 wt%, and the high content of dissolved organic matter (DOM) found in the pore water at an average concentration of 108-115 mgC/L [12,13]. The strong binding of Sn(IV) with BC DOM was evidenced by Durce et al [3], who derived Sn(IV)-DOM complexation constants from experiments performed in present-day BC conditions.…”

Section: Introductionmentioning

confidence: 99%

Sn(IV) Sorption onto Illite and Boom Clay: Effect of Carbonate and Dissolved Organic Matter

et al. 2022

View full text Add to dashboard Cite

126Sn is a long-lived fission product and it is important to assess its sorption onto the host rocks surrounding a possible nuclear waste repository. Boom Clay (BC) is under investigation in Belgium as a potential host rock. To better understand Sn(IV) sorption onto the clay minerals constituting BC, sorption of Sn(IV) was here investigated on Illite du Puy (IdP), from pH 3 to 12. Sorption isotherms at pH ~8.4 were acquired in the presence and absence of carbonate, and in the presence and absence of BC dissolved organic matter (DOM). Sn(IV) strongly sorbed on IdP over the full range of the pHs and concentrations investigated. In the presence of carbonates, Sn(IV) sorption was slightly decreased, highlighting the Sn(IV)–carbonate complexation. DOM reduced the Sn(IV) sorption, confirming the strong complexation of Sn(IV) with DOM. The results were modelled with the 2-site protolysis non-electrostatic surface complexation model. The surface complexation constants and aqueous complexation constants with carbonate and DOM were optimized to describe the experimental data. The applicability of the component additivity approach (CAA) was also tested to describe the experimental Sn(IV) sorption isotherm acquired on BC in BC pore water. The CAA did not allow accurate prediction of Sn(IV) sorption on BC, highlighting the high sensitivity of the model to the Sn(IV)-DOM complexation.

show abstract

Partitioning of organic matter in Boom Clay: Leachable vs mobile organic matter

Cited by 19 publications

References 34 publications

Mobility of organic compounds in a soft clay-rich rock (Tégulines clay, France)

Mobility of organic compounds in a soft clay-rich rock (Tégulines clay, France)

Dissipation of Phenanthrene and Anthracene from Soil with Increasing Salt Content Amended with Wastewater Sludge

Sn(IV) Sorption onto Illite and Boom Clay: Effect of Carbonate and Dissolved Organic Matter

Contact Info

Product

Resources

About