humic acid silica sand

Humic acid-, ferrihydrite-, and aluminosilicate-coated

2006-2-1 Humic acid coating of silica sand Humic acid was obtained from Aldrich (Lot No. 03130JS). We coated the humic acid over the silica sand following the methodology developed by Koopal et al.. This procedure involved modification of the silica surface with 3

(PDF) Impact of Humic Acids on Phosphorus Retention and

In this study, we have investigated the impact of humic acid (HA) (i.e., a major derivative during manure degradation) on the adsorption and transport of P in goethite-coated silica sand through a...

Contribution of Humic Acid and a Polysaccharide to Water

A silica sand and Pachappa sandy loam were treated at various pH's with aqueous suspensions of three microbial humic acids, a soil and peat humic acid, a microbial polysaccharide, and metallic salts of the tested organic substances.

ALUMINOSILICATE-COATED SILICA SAND FOR REACTIVE

2005-5-3 Chapter 3 describes the hydrodynamic properties of coated silica sand as a function of clay type and silica particle size. The surface properties of the porous medium were controlled with the coating of diﬀerent minerals (aluminosilicate clays and ferrihydrite) and humic acid. The hydrodynamic properties were studied with tracer experiments.

Impact of Sunlight and Humic Acid on the Deposition

2014-10-20 60 and silica sands was measured in folded capillary cells (Malvern, Worcester-shire, UK) by phase analysis light scattering (PALS) at 25 °C with at least ﬁve measurements per sample. Deposition Kinetics of nC 60. The deposition kinetics of nC 60 on bare and humic acid (SRHA or EHA) coated silica

Impact of Humic Acids on Phosphorus Retention and

2020-7-30 a Retardation factor R as the function of humic acid, b deposition coefficient μ 1 as the function of humic acid, and c maximum mass required to form a mono-layer coverage q max as the function of humic acid, applying to GS1 (goethite/silica sand w/w = 1/10), GS2 (goethite/silica sand w/w = 1/5), and GS3 (goethite/silica sand w/w = 1/3

Effect of humic acid on the sedimentation and transport of

2019-9-4 Humic acid (HA) is a major component of soil and water that exists widely in the natural environment and adsorbs to the surface of nanoparticles, which affects the fate and transport of ENMs in soil. Therefore, it triggers the necessity to study the chemical reaction of HA controlling the sedimentation and transport of nSiO 2.

The fouling potential of colloidal silica and humic acid

This is attributed to the effect of the humic acid on silica packing density. At higher concentrations of humic acid (>20 mg/L) or lower concentrations of silica the mixture

Humic acid removal by deep-bed filtration and by UF

2012-8-3 Deep-bed filtration of humic acid in the presence of the coagulant ferric chloride was performed in a continuous flow column (98 mm diameter, 750 mm long) filled with silica sand grains of 0.65 mm. Two PVDF tubular UF membranes were tested — a large pore size membrane of 100 kDa and a small pore size membrane of 20 kDa.

Interaction of Fullerene (C60) Nanoparticles with Humic

2008-9-10 Precoating the silica surfaces with humic acid and alginate exerts similar steric stabilization in the presence of NaCl. In the presence of CaCl 2, the deposition kinetics of fullerene nanoparticles onto both humic acid- and alginate-coated surfaces are relatively high, even at

Influence of humic acid molecular fractions on growth

2017-11-1 Influence of humic acid molecular fractions on growth distilled water and placed on trays with roasted silica sand. Moisture level was maintained at 50% of weighted water capacity. After 4–5 days, BBCH 10 growth phase (acc. to Munger et al. 2001) soybean were moved to germination

Humic acid-, ferrihydrite-, and aluminosilicate-coated

Four minerals (ferrihydrite, kaolinite, illite, and smectite) and a humic acid were coated on silica sand grains. Coated grains were packed into columns and the hydrodynamic properties of the media were determined with anionic tracers. The hydrodynamic properties of the various coated silica sands were similar, suggesting that porous media with

Humic acid coated sand as a novel sorbent in permeable

2020-8-1 A modified precipitation method was applied to plant of humic acid nanoparticles on the sand surface as immobilized phase. This mixture must agitate for 3 h; then, dried at 105 °C for 4 h and unattached humic acid can remove by washing until the pH of washing water stabilized on the certain value within the range of (6.5–7).

Effect of humic acid on the sedimentation and transport of

Humic acid (HA) is a major component of soil and water that exists widely in the natural environment and adsorbs to the surface of nanoparticles, which affects the fate and transport of ENMs in soil.

Detection and characterization of uranium–humic

2013-5-15 Previous column studies have found enhanced U mobility through silica sand in the presence of NOM (fulvic acid (Tinnacher, 2008), humic acid (Mibus et al., 2007), isolated groundwater NOM (Artinger et al., 2002), and natural soil humic colloids (Crançon et al., 2010)). The degree of enhancement varied as did the solution and column

Interaction of Fullerene (C60) Nanoparticles with Humic

2008-9-10 The deposition kinetics of fullerene (C60) nanoparticles onto bare silica surfaces and surfaces precoated with humic acid and alginate are investigated over a range of monovalent (NaCl) and divalent (CaCl2) salt concentrations using a quartz crystal microbalance. Because simultaneous aggregation of the fullerene nanoparticles occurs, especially at higher electrolyte concentrations, we

Influence of Humic Acid on the Transport and Deposition

Influence of Humic Acid on the Transport and Deposition of Colloidal Silica under Different Hydrogeochemical Conditions Jingjing Zhou, Wenjing Zhang, Dan Liu, Zhuo Wang, Shuo Li; Affiliations Jingjing Zhou Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China

Interfacial interactions of bare and functionalized

2019-5-1 To investigate the role of humic acid and/or Ca 2+ ions on the retention of nanoparticle by sand, the same procedure was conducted but with the addition of various concentrations of humic acid (i.e. 1, 10, 50, 100 mg/L) or CaCl 2 (i.e. 0.1, 1, 10, 100 mM). All the aforementioned suspension/solution were pre-adjusted to pH 3.5.

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Silica Sand. A sand dryer and storage to produce 10,000 mt of high quality pure silica sand for Glass making, foundry sand, sand for sand blasting, golf sand, sports turf sand for atletics field and for water filtration. If you are unable to locate a Chemical or

Influence of Humic Acid on the Transport and Deposition

Request PDF Influence of Humic Acid on the Transport and Deposition of Colloidal Silica under Different Hydrogeochemical Conditions The transport and deposition of colloids in aquifers plays

Influence of humic acid molecular fractions on growth

Humic acid-, ferrihydrite-, and aluminosilicate-coated

Impact of Sunlight and Humic Acid on the Deposition

2013-9-30 60 and silica sands was measured in folded capillary cells (Malvern, Worcester-shire, UK) by phase analysis light scattering (PALS) at 25 °C with at least ﬁve measurements per sample. Deposition Kinetics of nC 60. The deposition kinetics of nC 60 on bare and humic acid (SRHA or EHA) coated silica

Humic acid removal by deep-bed filtration and by UF

Interaction of Fullerene (C60) Nanoparticles with Humic

Metals and Metalloid Removal by Colloidal Humic Acid

with the coating of humic acids that is used to enhance colloi-dal stability. The stock suspension contained 66.4 g Fe L−1 and 11.2 g organic C L−1. For the column experiment, quartz sand (Dorsilit 8, grain size 0.3–0.8 mm, silica [SiO 2] 97.9% by weight, 23 ± 4 mg Fe g−1 sand) was coated with a suspension of HA-Goe following a method by

Enhanced distribution of humic acid-modified nanoscale

2018-10-27 Furthermore, the results of scanning electron microscopy-energy dispersive x-ray (SEM–EDX) characterization of silica sand before and after injection of NMgOs verified the presence of 5.78% of Mg from humic acid-modified NMgOs and 0.19% from unmodified

Antagonistic Eﬀects of Humic Acid and Iron

2014-1-8 550 °C) were investigated in water-saturated sand columns at environmentally relevant concentrations of dissolved humic acid (HA, 0, 1, 5, and 10 mg L−1) and fractional surface coverage of iron oxyhydroxide coatings on sand grains (ω, 0.16, 0.28, and 0.40). Transport of biochar NPs increased with increasing HA

Supporting Information Antagonistic Effects of Humic

2019-12-12 NP-sand interaction energy as the sum of the Lifshitz-van der Waals (LW), the electrical double layer (EDL), and the Lewis acid-base (AB) interactions as the two surfaces approach one other. Steric repulsion is not included because the thickness of the adsorbed humic acid (HA) layer on biochar NPs is unknown, but could be

Adsorption of Humic Acid to Mineral Particles. 1. Specific

1998-4-11 The adsorption of humic acid to mineral particles can be characterized by specific and electrostatic interactions and by polydispersity effects. In this paper we focus on the adsorbed amount and discuss the importance of specific and electrostatic interactions. The adsorption of purified Aldrich humic acid onto hematite has been measured as a function of pH and salt concentration as well as in

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