MENÜ
mum removal conditions and kinetics for boron resins can set a light to encounter operational problems such as 10% and 90% breakthrough times and the capacity in the indus-trial application of column reactor for boron removal. The usage of column reactor is the most practical and efficient way for ion exchange application [26]. Kinetic models have
Details
Boron is an essential trace nutrient, but if found in levels higher than 0.3 mg/L it can be very damaging to agricultural crops when present in irrigation water. ... The ion exchange system has benefits of low power consumption and waste volumes of less than 1%. A typical ION-IX boron removal process can be broken up into 5 distinctive zones ...
Details 
Typical boron rejections for the FILMTEC™ products SW30HR-380, SW30HR-320, SW30-380, BW30-400 and BW30LE-440 under FilmTec standard test conditions, based on tests with 300 elements, are shown in Table 1. In the standard test condition at pH 8, 93.2% of molecular boron are present as neutral B(OH)3 and 6.8% as B(OH)4-. Therefore this ...
Details 
May 14, 2016· Batch experiments revealed that the optimum conditions for removal of boron from aqueous solution using cryptocrystalline magnesite is 30 min of shaking, 1 g of magnesite per 100 mL of aqueous solution and 20 mg L −1 initial boron concentration. The removal of boron was observed to be independent of initial pH of the solution.
Details 
Aug 01, 2010· It is generally known that charged species are rejected to a greater extent by many polymeric RO and NF membranes through electrostatic repulsion. Thus, boron rejection increased to > 99% levels at pH 10.5 with the BWRO D membrane. This removal corresponds to permeate boron concentrations around 0.04 mg/L. Such permeate may …
Details 
The boron removal efficiency increased greatly, with only 0.30 mmol/dm3 remaining in solution after treatment for 60 min with samples calcinated at 75 °C, but samples calcinated at 95 and 175 °C removed slightly less boron than those calcinated at 75 °C. This enhancement of boron removal performance is due to the amorphization of the ...
Details 
MCR80 could adsorb boron above pH>6, the recommend condition is pH 8-10, at 60℃.and desorbed at acid media to recover free amine. MCR80 has excellent efficiency ability removal boron mainly from irrigation water, sea water and other high concentration brine. After treated by resin, the solution boron should be less than 1 ppm.
Details 
Jan 15, 2020· Obtained results show that the optimal conditions for the removal of boron are: a pH equal to 10, a flow rate of 10 L h −1, a ratio between the concentration of sulfates and that of boron equal to 2 and a reaction time of ED of 25 minutes. A desirability value of 1 corresponds to an optimal boron removal percentage of 43.506%.
Details 
Let's take a look at an example of how to remove boron from water using reverse osmosis. The following initial data are available. Source water consumption – 16,4 m 3 /h. Source water composition: Ammonium – 0,42 mg/l. Potassium – 3,17 mg/l. Sodium – 113 mg/l. Hardness – 0,65 mg-eq/l. Bicarbonates (НСО 3) – 299 mg/l.
Details 
May 01, 2008· Boron removal efficiency reached to 95% with increasing current density from 1.5 to 6.0 mA/cm(2), but energy consumption was also increased in this interval. At higher temperatures of solution, such as 313 and 333 K, boron removal efficiency increased. At optimum conditions, boron removal efficiency in geothermal water …
Details 
Boron is an ongoing issue in the recycle of produced water and some brine waters because it causes premature gelling of frac fluids used for "gel" frac operations. Boron causes polysaccharides (guar, among others) to cross link when placing the proppant. If boron is present in source water, the fluid can gel and cause operational problems.
Details 
The data on the kinetics of boron removal by EEC were consistent with the Pseudo-first order kinetics kinetic model (R2 = 0.99). The rate of boron removal in the EEC is 1.85 times higher than that of the EC. The efficiency of EEC in the removal of boric acid under optimal conditions was more than 88%.
Details 
May 26, 2021· The effects of the slagging refining conditions on impurity removal were studied. The chemical composition of slag agent, mass ratio of slag to silicon, refining time and refining temperature were experimentally explored and the optimal efficiency of boron removal was found to be 96.77%. The boron content in refined industrial silicon …
Details 
The boron removal process was tested by applying an initial acidification of the produced water through H 2 SO 4, followed by the addition of the leachate from the bottom ash washing and, finally, by the dosage of Ca(OH) 2 to reach alkaline conditions. This sequence of reagents dosage was selected to favor the overall reactivity of the system.
Details
Apr 05, 2021· The Langmuir adsorption capacity was found to be 77.8 mg-B/g with a 16-fold increase in the pseudo-second-order kinetic constant compared to those of normal LDHs. One of the main disadvantages of LDHs is their low selectivity toward boron; the efficiency of boron removal from wastewater by LDHs is only 60%.
Details 
Mar 15, 2014· At these applied optimum conditions, 99.7% boron removal from an initial concentration of 10.4 mg/L was achieved. The process was effectively optimized by RSM with a desirability value of 1.0. The results showed that boron removal efficiency enhanced with increase in current density and treatment time. Removal efficiency also increased …
Details 
Fig. 2. Variation of boron removal as a function of coagulation adjuvant dose 3) Optimization of the flocculent dose To optimize the experimental conditions of boron removal, commercial flocculent (anionic) was used in combination with optimum precipitant and coagulant doses to observe its effect.
Details 
Mar 01, 2020· Boron (B), normally present in ground water and sea water, is a vital micronutrient for plants, but is also toxic in excessive amounts. Under typical conditions, aqueous boron is present as boric acid (H 3 BO 3), which is uncharged, making B particularly challenging to remove by mechanisms commonly applicable to removal of …
Details Telif Hakkı © 2023 Artom Industry & Technology Group Co., Ltd.
