Sandy soils have poor soil structure, low water retention and low crop productivity. A bentonite-humic acid (B-HA) mixture was applied at a single rate of 30 Mg ha −1 to a sandy degraded soil of China for improving soil physical properties and hydric regime, and productivity of maize (Zea mays L.). Measurements of soil aggregate distribution, soil bulk density (BD), soil …
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Granular bentonite for water treatment. Coagulent for water treatment. ENVIRO-SEAL 12 and 30 are natural, granular sodium bentonite (clay) that have exceptionally low permeability and high swelling capacity. They work well as a coagulant for wastewater treatment and has a high affinity for cationic contaminants.
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The ASTM C837-99 Methylene blue test method was used to measure the sample's specific surface area and cation exchange capacity. The raw sample had a specific area of 147.1 m 2 /g and a cation exchange capacity of 18.78 meq/100 g, respectively. The elimination of impurities such as carbonates, water, hydroxyl groups, and other organic compounds during …
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Bentonite, however, has been shown to aid in the restoration of biological functions in drought-affected soils. Bentonite's function as a soil moisture retainer is an important consideration. Bentonite acts as a reservoir, trapping water within its layers due to its high water-holding capacity and ability to form a gel-like structure.
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Moreover, bentonite clay can be applied in various field like drilling, civil engineering, agriculture and water treatment. Discover the world's research 25+ million members
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Polymer modified Mt. has applications in many fields, such as drug delivery, and water treatment [53]. The combination of Mt. and polymers would create a nanocomposite without their limitations. For example, mixing Mt. with hydrophilic polymers increases the AE in aqueous solutions [58]. For preparing polymer-Mt, montmorillonite should be ...
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This study aims to investigate the efficiency of bentonite and biochar in immobilizing cadmium (Cd) and mitigating the stresses of Brassica Chinensis L. in Cd-contaminated soil. The crop of Brassica chinensis L. was applied 5% (w/w) mono- biochar (C), mono- bentonite (B), and integrated biochar and bentonite (1:1 = W: W, BC). The change in …
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Additionally, Bentonite's remarkable cation exchange capacity also lends itself to various other applications beyond water treatment. One notable utilization is in the field of geotechnical ...
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Bentonite is a clay with interesting surface properties (affinity for water, adsorption capacity for electro-positive compounds….). The characteristics and clarifying properties of bentonite from various companies are the subject of numerous studies. The present work focuses on the study of the efficiency of bentonite and modified bentonite to purify aqueous solutions …
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is frequently employed in water treatment. This absorption may be divided into two types: physical absorption and exchange adsorption [7]. Many researchers have undertaken extensive and …
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In this study, Ag-WO 3 /bentonite nanocomposites were synthesized through a sol-gel process, a microwave irradiation technique, and a sol-immobilization process to examine their impact on the photocatalytic activity in the degradation of humic acids. The optical and structural properties of the synthesized materials were characterized using X-ray diffraction (XRD), Fourier-transform …
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The application of PVC-based UF membranes is limited for the separation of oily wastewater modified by blended or membrane surface modification. Therefore, the novelty of the present work is to enhance PVC membrane performance by SI-ATRP grafting techniques and treatment of oily water.
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In particular, bentonite plays a crucial role in water-based drilling fluids, commonly known as water-based muds (WBM) (Luckham and Rossi, 1999, Kelessidis et al., 2006, Mahto and Sharma, 2008, Afolabi et al., 2017). The most known Wyoming bentonite (with more than 90% of Mt) shows excellent colloidal and rheological properties in WBM.
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Water Treatment. Bentonite clay removes impurities and heavy metals from wastewater. Thus, it improves water quality, making it safe for discharge or reuse. This application is crucial for industrial and municipal …
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Bentonite clays (BCs), whether in natural or modified form, have gained enormous potential in wastewater treatment and have been used successfully as a novel and cost-effective bio-sorbent for...
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Application Rate. For ponds, in the absence of laboratory tests or field performance data on soils similar to those to be treated, follow Table 1 for the minimum application of finely ground bentonite. Table 1 - Minimum Application Rate of Finely Ground Bentonite per 1-inch Thickness of Constructed Liner Pervious Soil Description Application rate
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Bentonite is characterized by high adsorption, ion exchange, and swelling capacity, as well as by specific rheological properties (thixotropy). It, therefore, has wide …
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Bentonite in wastewater treatment emerges as a game-changer, harnessing its natural absorption and flocculating properties. This article unfolds the myriad ways in which bentonite transforms wastewater treatment …
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In recent decades, increased industrial, agricultural, and domestic activities have resulted in the release of various pollutants into the aquatic systems, which require a reliable and environmentally friendly method to remove them. Adsorption is one of the most cost-effective and sustainable wastewater treatment techniques. A plethora of low-cost bio-based adsorbents …
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Fig. 1 shows the number of publications and citations of low-cost ceramic membranes in the past decade. In recent years, research on low-cost ceramic membranes has gradually increased, especially in the field of water treatment. These studies cover the performance and advantages of low-cost ceramic membranes in different water treatment …
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A field experiment was conducted in a semi-arid region in northern China to evaluate the effects of bentonite soil amendment on field water-holding capacity, plant available water, and crop ...
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The pH 6 as the optimum value was under consideration not only the treated efficiency but also the cost of the treatment Keywords: Bentonites, water contamination, organic polymers, water purification
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Among the few fields of application, bentonite can be used for the purification of gases [1], the elimination of radioactive elements [2, 3], the elimina- tion of pesticides [4], and the ...
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The efficiency of flocculation is highly dependent on the selected flocculants. Flocculants are mainly divided into two distinct classes: (1) inorganic coagulants, such as aluminum sulfate (Al 2 (SO 4) 3), poly-aluminum chloride (PAC), and polymerized ferrous sulfate (PFS), and (2) organic polymeric flocculants including synthetic and natural ones.. Traditional …
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Throughout ancient times, human civilizations have exploited the versatile properties of bentonite, using it both as a highly practical material and as a remedy deeply rooted in medicinal traditions [7].This bentonite clay is appreciated for its affordability, non-toxic and environmentally friendly nature, as well as its several attractive applications in various fields.
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In this study possibilities of the application of optimum conditions of the adsorption and coagulation treatment with bentonites was explored and optimized and effects of the treatment were...
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Advantages of the nanomaterials in the field of water treatment and purification have been discussed in the next (1.3) paragraph. ... Venkatachalam S (2017) Preparation and characterization of calcium treated bentonite clay and its application for the removal of lead and cadmium ions: adsorption and thermodynamic modeling. Process Saf Environ ...
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adsorption and coagulation treatment with bentonites was explored and optimized and effects of the treatment were focused on, water contaminated with dispersions of different organic …
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Soil enzymes play a key role in many soil processes that affect soil health and which may be adversely affected under a changing climate. We investigated the short- and long-term effects of bentonite amendments on soil catalase, invertase, urease, and alkaline phosphatase activity in a field experiment in a semi-arid region in northern China. Treatments included six …
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Moreover, bentonite clay can be applied in various field like drilling, civil engineering, agriculture and water treatment. Discover the world's research 25+ million members
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Bentonite is widely used in industrial wastewater treatment due to its large reserves and excellent physicochemical properties. In order to further improve the properties of bentonite, natural bentonite needs to be modified before application. The common modification methods of bentonite include thermal activation, acid activation, and microwave activation. In recent years, …
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Major applications of bentonite are in iron and animal oil pelletization, in the drilling of petroleum oil recovery, in catalysis of organic reactions, in wastewater treatment, etc. In this …
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general, field mixing and application of the bentonite solution proceeded very well with the conventional equipment. For application the windrow was spread out to a width of approximately 2.4 m (8 ft) on half of the road. The distributor, using the center 2.4-m (8-ft) spray bar,
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The water molecules that occur between the layers in smectites are called low temperature water which can be driven off by heating from 100 to 150°C (Grim, 1968).It has been shown that the water on the surface between the montmorillonite layers is in a physical state different from liquid water (Low, 1961).A multitude of studies of this water between the layers …
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2.2. Effects of Synthetic Polymers on the Rheology and Suspension Stability of Bentonite. We selected the synthetic polymers zwitterionic polymer (P-1), polycarboxylate water reducer (PAS) and AAAMAMPS terpolymer (named A7) [].The three synthetic polymers were mixed with bentonite and Na 2 CO 3 and added to sea salt water, and viscosity was recorded with a six …
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