— Bentonite, with a large surface area and abundant pore structure, can adsorb free radicals during the explosion reactions. ... (TA), acid activation (AA), and combined acid and thermal activation (ATA) [18]. The solution by modification limits their industrial application as low-cost adsorbents for the removal of hazardous pollutants from ...

 — A new approach to acid activation of raw Ca-bentonite was explored. The method consisted in dehydration of clay by thermal pretreatment at 200 °C, followed by immediate impregnation with H2SO4 ...

W bentonite contains also gypsum and kaolinite. ... Sunflower Oil Bleaching by Adsorption onto Acid-Activated Bentonite 1 71 Brazilian Journal of Chemical Engineering Vol. 28, No. 01, pp. 169 ...

Treatment of Bentonite by a HCl + BaCl2 Mixture. Introduction of a water solution of HCl and BaCl2 with pH = 1.5 into bentonite, in accordance with XRD, leads to the …

 — Therefore, the leaching and migration characteristics of N in saline soils of the Yellow River Delta (Shandong Province, China) with the addition of weathered coal humic acid (HA), gypsum and bentonite, were examined using soil columns and 15 N isotope tracers. The results showed that co-application of HA and gypsum could significantly …

 — The methods of X-Ray diffraction, FTIR, electron microscopy, BET, CEC and others were used for investigation of bentonite activation with hydrocloric acid in conditions of water deficiency.

DOI: 10.1016/j.aoas.2023.02.001 Corpus ID: 257010092; Leaching and migration characteristics of nitrogen during coastal saline soil remediation by combining humic acid with gypsum and bentonite

Acid Sulphate Soil Treatment. ... These products such as the bentonite gypsum earthing compounds provide a thermally stable high conductivity filling compound to provide long term low ground resistance when backfilling cable trenches containing copper electrodes/earth rods.

 — The FTIR spectra of both raw bentonite and acid activated bentonite were compared as shown in Fig. 1. The structural modification of bentonite caused by acid …

 — The other constituents of bentonite include quartz, gypsum, feldspar, Cristobalite (ICDD PDF 39-1425), calcite, ... To further activate acid-modified bentonite, bimetals (Cu/Ni, Fe/Ni, and Co/Ni ...

 — Purpose This study aims to investigate the dynamic changes over time in the immobilization efficiency of hydroxyapatite, bentonite, and biochar for Cd and Pb co-contaminated soil given the potential remobilization of immobilized heavy metals for long-term stabilized soils. Materials and methods Hydroxyapatite, bentonite, and biochar …

Established in the year 2013 at Gandhidham, Kutch (Gujarat) are a Sole Proprietorship based firm, engaged as the foremost manufacturer and Exporter of Silica Sand, Quartz Sand, Fly Ash(Class C &F), Washed …

 — Chinese J. Chem. Eng., 14(2) 25358 (2006) Characterization, Acid Activation and Bleaching Performance of Bentonite from Xinjiang* WU Zhansheng(^ t)a, LI Chun(^#) a'c'**, SUN Xifang(^*^)a, XU DAI Bin(ft $)a, LI Jin'e(*&$)a and ZHAO Hongsheng *i * b 1 School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, …

 — Objective: The aim of this study is to analyze different strategies of modification of bentonite (Bent) combining reactions of cationic exchange, silylation and acid activation.

 — Leaching and migration characteristics of nitrogen during coastal saline soil remediation by combining humic acid with gypsum and bentonite. February 2023; Annals of Agricultural Sciences 68(1)

In this scenario, bentonite has been recommended as an additive to reduce N losses during composting (Zhang & Sun, 2017;Guo et al., 2020;Li et al., 2020a), as well as to increase humic substances ...

Adsorption from Aqueous Solution Onto Natural and Acid Activated Bentonite. 2012 • ... with the addition of 0.5, 1, 2, 4 and 8% gypsum. The effect of addition of gypsum to bentonite + 8% lime is to produce a greater maximum dry unit weight and optimum moisture content. These observations are in agreement with Wild et al. (1996). - 203 ...

 — The comprehensive assessment findings demonstrated that the utilization of additives, including 2.0 % phosphogypsum, 2.0 % humic acid, 0.25 % bentonite, and …

Seaweed Granules contains 6 to 10% seaweed Enriched with Amino Acid, Fulvic Acid, Humic Acid, Bentonite Clay and Gypsum to improve soil structure and Healthy Root System. Choose Quantity + Add to Cart. Product Details . Seaweed Granules. Dosage. Farming : Per Acre 5 to 6 kgs .

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44 Reclamation of bentonite mined lands in the Northern Great Plains than the 9 mt/ha gypsum rate and the non-amended control after one growing season. Gypsum plus calcium chloride (6.7mr/ha plus 17.2 mt/ha), gypsum plus sulfuric acid (6.7 mt/ha plus 12.3 mt/ha) and gypsum plus sulfuric acid with irriga-

One of the most common products containing sulfur is elemental sulfur mixed with bentonite clay, which helps form elemental sulfur into small disks called pastilles. Tiger 90 is a product that uses this mix and has a high …

 — In the phosphoric acid plant of M'dhilla, the OM can be found as colloidal suspension and soluble forms. The colloidal organics are coagulated and deposited with the gypsum precipitation during the aging of H 3 PO 4, while the soluble part remains behind. The purpose of this work was to study the OM adsorption onto montmorillonite bentonite.

Effect of acid treatment 0 2 4 6 8 12 7.96 6.57 6.02 4.93 3.57 4.39 14.70 11.99 11.25 10.61 8.64 9.98 Based on the mineralogy of the Miles bentonite, the acid treatment provided an excess of about 1.4 the amount of protons needed to replace all exchangeable cations and to displace octahedral cations and tetrahedral Al from the smectite structure.

 — Gypsum, cristobalite, and quartz are also present (Ajemba 2014). ... Accordingly, 57.7, 100.97, 4.94, and 30.85 m 2 /g of raw bentonite, acid-activated bentonite, raw SCBA, and acid-activated SCBA were evaluated, respectively. It was observed that activating with acid enhanced the specific surface area of the adsorbents.

 — The simulated dissolved SO 4 2− concentrations underestimated the porewater concentration data, possibly due to uncertainties in the initial amount of gypsum in the bentonite. A similar approach was followed by Arcos et al. ( 2000 ), simulating the …

HCl Treatment of Bentonite The treatment of bentonite clay by the diluted hydrochloric acid with pH = 0.8 resulted in the reduction of gypsum and montmorillonite contents. In the region of 2θ ∼ 20–30º a halo occurs (Fig. 1b and Fig. 4).

 — Therefore, the leaching and migration characteristics of N in saline soils of the Yellow River Delta (Shandong Province, China) with the addition of weathered coal …

 — Bentonite absorbs water, expands and makes good contact between the soil and anode, reducing groundbed resistance. In those cases where the soil has a low moisture content, 75% bentonite and 25% gypsum are used. A mixture of 50% molding plaster and 50% bentonite clay works well with the zinc anodes. 2. Carbonaceous Backfill

 — Zhou, L. et al. Effect of bentonite-humic acid application on the improvement of soil structure and maize yield in a sandy soil of a semi-arid region. J. Geoderma. 338, 269–280 (2019).