humic acid silica sand

14. Helps Athletes Refuel. Although there are health benefits to sweatin g, active people that sweat a lot are at a higher risk for losing their body's minerals. Supplementing with humic acid is a great way for …

Aluminium speciation and pH of an acid soil in the presence of fluoride. Moore CS, Ritchie GSP Journal of soil science, 39(1):1-8, 01 Mar 1988

The effect of humic acid (HA) on PVP-nZVI transport is shown in Fig. 6a. The elution of PVP-nZVI in silica sand was enhanced in the presence of HA. In the absence of HA, the maximum C/C 0 was only 0.71, and a considerable portion of iron was still retained in the column.

In this study, we investigate the feasibility to produce porous media with similar hydrodynamic properties, but different surface characteristics. Four minerals (ferrihydrite, …

Fumed colloidal silica, silicon (IV) oxide 99%, and humic acid sodium salt (50-60% as humic acid) were obtained from Fisher Scientific. Stocks of HA and Si were prepared in DIW at 2000 ppm and 100 ...

The deposition kinetics of fullerene (C 60) nanoparticles onto bare silica surfaces and surfaces precoated with humic acid and alginate are investigated over a range of monovalent (NaCl) and divalent (CaCl 2) salt concentrations using a quartz crystal microbalance.Because simultaneous aggregation of the fullerene nanoparticles occurs, …

Humic acid can also be immobilized in a porous matrix using a soil-gel process, whereby a glassy matrix is produced through a series of hydrolysis and …

A novel solid-phase extraction (SPE) sorbent, humic acid-bonded silica (HAS), was prepared. Humic acids (HAs) were grafted onto silica matrices via an amide linkage between humyl chloride and the ...

DOI: 10.1016/j.scitotenv.2014.06.075 Corpus ID: 9407060; The influence of humic acid and clay content on the transport of polymer-coated iron nanoparticles through sand. @article{Jung2014TheIO, title={The influence of humic acid and clay content on the transport of polymer-coated iron nanoparticles through sand.}, author={Bahngmi Jung …

Soil Amendment: For granular or powdered forms, apply 2-5 pounds per 100 square feet and work it into the top 6-8 inches of soil. This is ideal during the planting season or when preparing beds. Foliar Spray: Liquid humic acid can be diluted with water and applied directly to plant leaves, providing a quick nutrient uptake boost.

Uranyl carbonate (UC(VI)) is a stable form of uranyl (U(VI)) that widely coexists with amorphous colloidal silica (ACSi) and humic acid (HA) in carbonate-rich U-contaminated areas. In this context, the cotransport behavior and mechanism of UC(VI) with ACSi (100 mg L −1) and HA colloids in saturated porous media were systematically …

The detoxification by several real-world sediments being mixtures of sand and clay was in-between silica and montmorillonite. Humic acid detoxified most effectively on weight basis. ... Polynomial relationships ('QSARs') were established for algal toxicity of MAQ in the presence of montmorillonite, silica and humic acid with carbon chain ...

Effect of humic acid on the sedimentation and transport of nanoparticles silica in water-saturated porous media. Soils, Sec 4 • Ecotoxicology • Research …

The transport experiments of Escherichia coli were performed in 40-cm long column filled with river sand of diameter 400 μm. Batch sorption experiments were …

The transport and retention behaviors of titanium dioxide nanoparticles (nTiO 2) in iron oxide-coated sand were examined in water-saturated sand columns as functions of pH, ionic strength, and humic acid.Experimental breakthrough curves and retention profiles indicated that the transport and retention of nTiO 2 in the absence of …

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 …

It is possible that unadsorbed humic acid chains contributed to the mobility by coating the sand grains and providing an electrosteric barrier to particle deposition. Fig. 5 Breakthrough curves of humic acid-coated goethite nanoparticles in silica sand a at 1.70 g/L solid content and in the presence of CaCl 2 at different concentrations and b ...

Uranyl carbonate (UC(VI)) is a stable form of uranyl (U(VI)) that widely coexists with amorphous colloidal silica (ACSi) and humic acid (HA) in carbonate-rich U-contaminated areas. In this context, the cotransport behavior and mechanism of UC(VI) with ACSi (100 mg L-1) and HA colloids in saturated porous media were systematically …

For the mixed foulants the presence of modest amounts of humic acid (<15 mg/L) tended to reduce both MFIUF and specific resistance below that of the colloidal silica alone (50–150 mg/L). This is ...

Results from this study suggest that natural organic matter and solution pH are likely key factors that govern the stability and mobility of nTiO(2) in the natural aquatic environment. The distinct effects of humic acid (HA, 0-10 mg L(-1)) on the transport of titanium dioxide (rutile) nanoparticles (nTiO(2)) through saturated sand columns were …

NH 4 Cl and CO(NH 2) 2 were employed as inorganic and organic N fertilizers, respectively, while humic acid (HA) was used as model humic substance. We found that for all three sized MPs (0.2, 1 and 2 µm) without HA, both types of N fertilizers decreased their transport/increased their retention in porous media (both quartz sand …

Adding kaolinite up to 2% by weight to the sand column reduced the retention of CMC90K-RNIP, but further increases in kaolinite content (to 5%) did not significantly affect nZVI retention. ... (C 60) nanoparticles with humic acid and alginate coated silica surfaces: measurements, mechanisms, and environmental implications. …

A pH-responsively controlled-release fertilizer was prepared using humic acid (HA) hydrogel, Nanosilica aqueous dispersion (NSAD) and sodium alginate (SA). Therein, the NSAD was modified with HA owning a variety of reactive groups and good compatibility by the hydrogen bonding and playing a skeleton supporting role in the entire structural ...

Once adsorbed to soil colloids, the recovery rate of ciprofloxacin increased by 26.7% in uncoated sand column, 21.1% in iron oxide coated sand column, and 32.7% in humic acid coated sand column.

To understand the interactions between CMC90K-RNIP and sand grains in the presence of humic acid, and between HA-RNIP and sand grains, as well as the effect of HA on the transport of CMC90K-RNIP in a porous medium, the total interaction energy was calculated. Fig. 5 b compares the total interaction energy profiles (V T) simulated in …

DOI: 10.1007/s11368-019-02444-x Corpus ID: 201815337; Effect of humic acid on the sedimentation and transport of nanoparticles silica in water-saturated porous media @article{Zhang2020EffectOH, title={Effect of humic acid on the sedimentation and transport of nanoparticles silica in water-saturated porous media}, author={Mo Zhang …

In this study, we investigate the feasibility to produce porous media with similar hydrodynamic properties, but different surface characteristics. Four minerals (ferrihydrite, kaolinite, illite, and smectite) and a humic acid were coated on silica …

The presence of humic acid, silica colloids, and SRS sediment was shown to synergistically effect the removal of U(VI). Uranium (VI) Removal at 50ppm Filtered between pH 3 and 8 for all batches

This study focuses on the effects of organic (humic acid substances) and inorganic (bentonite clay, silicate, and kaolinite clay) colloids on the transport of bacteria under saturated flow conditions. The transport experiments of Escherichia coli were performed in 40-cm long column filled with river sand of diameter 400 μm. Batch sorption …

The presence of humic acid could affect the zeta potential and size of the colloidal silica, which led to obvious colloidal silica aggregation in the divalent ion solution. …

2016. TLDR. It is found that the additional repulsion between bacteria and quartz sand caused by both acid-base interaction and steric repulsion as well as the competition for deposition sites on quartz sand surfaces by PFOA are responsible for the enhanced transport and decreased deposition of bacteria with PfoA in solutions. Expand.

@article{Li2021InteractionBH, title={Interaction between humic acid and silica in reverse osmosis membrane fouling process: A spectroscopic and molecular dynamics insight.}, author={Danyang Li and Weichen Lin and Ruipeng Shao and Yue-xiao Shen and Xianzheng Zhu and Xia Huang}, journal={Water research}, year={2021}, …

The influence of humic acid on the adhesion of Escherichia coli to silica particles or glass surfaces was investigated. After adsorbing various amounts of humic acid to the particles or surfaces ...

Combined organic and inorganic fouling is a primary barrier constraining the performance of reverse osmosis (RO) membrane. In this work, we conducted a systematic study focusing on the synergetic fouling effects of silica and humic acid (HA) in RO process, and found the critical silica concentration where the fouling pattern changed …

The adsorption of, the still widely used, herbicide atrazine on model soil components, such as humic acid and humic acid–silica gel mixtures, was investigated in a series of batch experiments, under different experimental conditions (ionic strength, temperature, and pH). The investigation aimed at obtaining an estimate of the …

Effect of humic acid (HA) on the sorption behaviour of 137Cs on silica colloids has been studied by batch procedure over a pH range of 3-10 and at ionic strength of 0.05 M (NaClO4).

The fouling propensity of an inorganic colloid (silica) and an organic (humic acid) and their mixture was studied in this paper. Fouling propensity was characterized as the modified fouling index (MFI UF) and specific cake resistance in dead-end UF at constant pressure.Experimental results for individual foulants demonstrated that MFI UF increased …

At ambient temperature the adsorption of humic acid on the quartz sand seems to be controlled mainly by electrical interaction between the organic particle and the solid substrate. A correlation ...

@article{Hou2021CotransportOU, title={Cotransport of uranyl carbonate loaded on amorphous colloidal silica and strip-shaped humic acid in saturated porous media: Behavior and mechanism.}, author={Wei Hou and Zhiwu Lei and E-ming Hu and Hongqiang Wang and Qing-liang Wang and Rui Zhang and Hui Li}, …