Sorption of humic acids by quartz sands

Мальцева, Е. В.; Yudina, N. V.

doi:10.3103/s0361521914040089

Cited by 8 publications

(1 citation statement)

References 14 publications

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“…Faisal et al (2020) showed that plantation of humic acid nanoparticles on inert sand increased the sorption capacity of Cu. The minerogenic composition differs between different types of sand, which can affect the interaction of humic substances with the mineral surface (Mal'tseva & Yudina 2014). The implication of this relationship is that selected sand for filtration can affect the outcome of the removal of the metals.…”

Section: Presence and Removal And Ratio Between Total And Dissolved F...mentioning

confidence: 99%

Evaluation of a sand filter material for road runoff treatment– pilot-scale field trial focused on copper and zinc removal

Hallberg

Renman

Berndtsson

et al. 2022

Water Practice and Technology

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The effects of stormwater discharges on receiving aquatic environments and the need for their purification were highlighted by an EU court in May 2020. The ruling stated the need for removal of dissolved pollutants, which justifies field studies for development of far-reaching methods for runoff treatment. In this study, a standard sand was used as medium for road runoff filtration and removal of dissolved and particle-bound (<0.45 μm) zinc (Zn) and copper (Cu). Data included 24 road runoff events, mimicking the flow variations and pollutant emissions over a seven-month period. The findings showed that sand can be used to remove Zn and Cu from road runoff in a gravity fed treatment system at a surface load ranging from 16.8 to 201 L m−2 h−1. The removal of total Zn and Cu was 93 and 67%, respectively. Dissolved Zn was efficiently removed by the sand (87%), however not Cu (19%). The sand efficiently removed total suspended solids (TSS) from maximum occurring 443 mg L−1 to below 5 mg L−1. No head loss due to the TSS loadings was observed. The sand's potential to remove the investigated metals was shown, but in the longer term, effluent concentrations may exceed permit values.

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Section: Presence and Removal And Ratio Between Total And Dissolved F...mentioning

confidence: 99%

Evaluation of a sand filter material for road runoff treatment– pilot-scale field trial focused on copper and zinc removal

Hallberg

Renman

Berndtsson

et al. 2022

Water Practice and Technology

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Nanostructure of humic acid adsorption layer in the presence of Cs and Sr ions on the surface of waste material obtained from residue after supercritical extraction of hops

Ostolska

Biedrzycka

2022

Appl Nanosci

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Adsorption of ionic molecules at the solid–liquid interface depends on various interactions, particles surface properties as well as the presence of the additional substance in the analyzed systems. The waste material obtained from the supercritical fluid extraction process was used as an adsorbent. The plant-based biosorbent structure was fully characterized. Then the humic acid (constituting the common interfering substance found in the environmental samples) sorption on the hop cones was investigated in the absence and presence of Sr/Cs ions under various pH conditions. Hence, the metal cation valence can influence the interactions between the colloidal system constituents and the adsorption layer structure. Determining the mutual interactions in the complex systems is important due to the potential possibility of using the waste sorbent to remove the radioactive Cs and Sr isotopes from the aquatic environment. Due to the lack of a porous structure of the sorbent and the high surface density of the charge, the metal ions are bound directly on the particles surface. The humic acid (HA) adsorption is greatly pH dependent—the largest removal was achieved under the acidic conditions (Qads = 88.69 mg/g), while the HA sorption process at pH 9 is impeded by a large negative charge deposited at the solid–liquid interface (Qads = 7.06 mg/g). At pH 3, formation of multilayer adsorption structure contributes to the effective removal of organic impurities. The metal ions valence significantly affects the humic acid binding mechanism. Divalent Sr acts like a “bridge” increasing the number of biosorbent active sites (at pH = 3 the HA adsorption increases almost twofold from 88.69 to 156.46 mg/g in the Sr ions), whereas the Cs+ ions leads to the reduction in the HA removal efficiency (Qads. = 46.31 mg/g under the same conditions).

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Co-transport of U(VI), humic acid and colloidal gibbsite in water-saturated porous media

Yang

Jin

et al. 2019

Chemosphere

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Sorption of humic acids by quartz sands

Cited by 8 publications

References 14 publications

Evaluation of a sand filter material for road runoff treatment– pilot-scale field trial focused on copper and zinc removal

Evaluation of a sand filter material for road runoff treatment– pilot-scale field trial focused on copper and zinc removal

Nanostructure of humic acid adsorption layer in the presence of Cs and Sr ions on the surface of waste material obtained from residue after supercritical extraction of hops

Co-transport of U(VI), humic acid and colloidal gibbsite in water-saturated porous media

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