قائمة الطعام
Recently, some researchers found that plant materials had a good boron removal efficiency. Haddabi et al. [70] explored the feasibility of date palm seed ash …
Efficient boron removal is one of the key challenges for reverse osmosis membranes. Understanding the transport behavior of boric acid (B(OH) 3) at the molecular level is of great importance to design pores with high permselectivity.Herein, via non-equilibrium molecular dynamics simulations, the B(OH) 3 rejection is found to be closely …
Boron removal remains a major barrier to water purification, it is important to develop a specialized adsorption membrane for boron removal. ... Synthesis of Negatively Charged Polyol-Functional PSF Membranes with Good Hydrophilic and Efficient Boron Removal Properties Polymers (Basel). 2019 May 1;11(5):780. doi: …
UiO-66-NH2/GO showed good removal ability for low concentration boron and good reusability. The above suggest that UiO-66-NH2/GO has the potential to be applied to desalinated seawater treatment. View
Water-stable metal–organic framework (MOF) UiO-66 was studied in boron removal from water for the first time. XRD, SEM, nitrogen adsorption/desorption isotherms, and thermogravimetric analysis (TG) were employed to confirm the structure. The boron adsorption kinetics, isotherms, thermodynamics, mechanism, and recycling on UiO-66 …
2. Boron Study. The average boron contents in the respective water resources are different due to the geochemical nature of the drainage area, the proximity to marine coastal regions and the imputes from industrial and municipal effluents [].In the readily available seawater treating applications, boron removal is conducted as the post …
The optimum dosage for aluminum sulfate was established at 1125 mg/L at a pH of 12.0. Iron salts give good removal of boron, and the reaction is completed immediately after the addition of reagents. Iron(III) salts are the best reagents, as iron(II) precipitates were more difficult to filter and secondary precipitation occurred in the filtrates.
This article reviews a number of sorbents for boron removal from aqueous solutions, including chelating resins, activated carbon, fly ash and industrial waste …
New and cheaper refining methods for production of metallurgical silicon are needed to meet the increasing demands for low-cost, high-quality silicon for the solar cell industry. One promising refining method for boron is moist hydrogen treatment. In this work, an evaporation unit has been used to produce wet hydrogen gas, which subsequently …
The advantages of resin methods are simple operation, good selectivity, a high boron removal rate, insensitivity to salinity, and a high water yield. Its …
AGMD shows excellent boron removal, which was above 99% with a wide ranging concentration. In addition, VMD demonstrates good permeate flux compared to the other MD technologies, which were about 5.8 kg/m2h for synthetic seawater. Furthermore, there is no noteworthy influence of the pH value on the boron removal e …
Benefits from obtaining enough boron from your diet (sometimes with help from supplements) include support for bone health, healthy hormone production, brain/cognitive functions, prevention of arthritis and immune support. Boron uses include boosting done density, balancing hormones and fighting diabetes, among others.
Abstract and Figures. Boron overabundance in aquatic environment raises severe concerns about the environment and human health because it is toxic to various crops and induces many human and ...
AGMD shows excellent boron removal, which was above 99% with a wide ranging concentration. In addition, VMD demonstrates good permeate flux compared to the other MD technologies, which were about 5.8 kg/m 2 ·h for synthetic seawater. Furthermore, there is no noteworthy influence of the pH value on the boron removal …
Classical MD simulations are conducted using the open-source LAMMPS package [36] to simulate the RO process using NPG membranes for boron removal. The NPG membranes are constructed by creating nanopores of different sizes on pristine graphene, and the pore rims are passivated by hydroxyl groups (−OH) and/or hydrogen …
Slag structure plays an important role in determining the relative ease of boron removal from silicon. Correlation between slag structure and boron removal thermodynamics was experimentally studied by Raman and nuclear magnetic resonance (NMR) spectroscopy using CaO-SiO2-Na2O slags with different optical basicities (0.6 to …
Applications. Our boron removal solutions can be applied to a range of industries: Agriculture – removing boron from water to make it suitable for irrigating sensitive crops. Mining Water – removal of boron to allow safe water discharge. Industrial Water – elimination of boron from process water or wastewater to enable reuse or discharge.
Boron has been widely used in various manufacturing industries, and the level of boron in the industrial effluent can range from as high as several grams per liter to as low as a few micrograms per liter. Due to the potential adverse health effect of boron on human beings, the World Health Organization (WHO) has provided a guideline for the …
the boron removal at a low pH for VMD at a 7 ppm initial boron concentration was 99.1%, which indicates 0.01 ppm boron in the permeate side. Consequently, MD technology can be taken into
In this review, we fir st present a general outline of the importance of boron, boron che mistry in water, boron. contamination, and its consequences follo wed by the recent progress in boron re ...
Boron is an important element for plants, humans, and animals in limited amounts. However, excess amounts can cause adverse effects in both humans and plants, necessitating its removal from ...
Masindi et al. (2016) used bentonite and magnesite powder to form composites with a good boron removal capacity (maximum adsorption capacity of 4 mg·g −1). The composites, at a dosage of 1 g, …
Boron removal by a boron specific ion exchange resin was developed as early as in the 1970s, ... From sorption and elution tests, it was found that the resin showed good stability in terms of particle disintegration for long term uses and better performance of regeneration in comparison to common polymeric boron sorbents.
Boron removal from an aqueous solution can be achieved by various techniques, e.g. chemical precipitation, adsorption, solvent extraction, reverse osmosis, electro-dialysis and membrane filtration ...
Masindi et al. [64] fabricated a composite using powdered bentonite and magnesite, which exhibited a good boron removal ability. In the optimal condition, the concentration of boron reduced to lower than 0.01 mg/L as the initial boron concentration was 5 mg/L. Kıpçak and Özdemir [65] utilized magnesite calcined at 600 °C to dispose …
EC and DLH have been proven to be highly effective for boron removal from solutions with a high boron concentration, while a DLH compound alone can …
The obtained microspheres were modified with N-methyl-D-glucamine and tested in a hybrid system. It was noted good boron uptake and shape stability when sorbents were exposed consecutively to acid and base solutions. Other method for preparation of monodisperse polymeric microspheres for boron removal was shown by …
At initial effluent pH of 7.72, solid–liquid ratio of 59.95 g L−1 and an initial boron concentration of 18.63 mg L−1, it was possible to reach 43% of boron removal, with a variance of 2%.
It was noted good boron uptake and shape stability. ... The optimal pH of boron removal efficiency was 6.5 for MJA1 and 7 for RJA and MJA2. The efficiency decreased with increasing initial ...
Boron removal using waste-derived materials is highly significant considering its economic advantages. Many naturally occurring materials such as walnut shells, rice, wheat, various seeds, eggshells, and eggshell membrane (ESM) have been studied for their boron adsorption performance. … See more
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