Separation of Boron from Geothermal Waters with Membrane System

Abstract

This study presents the separation and recovery of boron from geothermal waters with a polymeric membrane system and suggests a transport mechanism. The optimum relative parameters of the transport were examined. The recovery value of boron was 60.46% by using polymeric membrane system from prepared aquatic solution to the acceptor phase. The membrane’s capacity and selectivity of the transport process were examined. Kinetics values were calculated for each transport parameter. The optimum kinetic values were 1.4785 × 10−6 (s−1), 7.3273 × 10−8 (m/s), 13.5691 × 10−8 (mol/m2.s), 5.8174 × 10−12 (m2/s) for constant rate, permeability coefficient, flux, and diffusion coefficient, respectively. Boron was transported selectively and successfully from geothermal waters in the presence of other metal cations with 59.85% recovery value. This study indicates the application of real samples in polymeric membrane systems, which are very practical, economic, and easy to use for large-scale applications. The chemical and physical properties of polymer inclusion membranes (PIMs) offer the opportunity to be specially designed for specific applications.

The effect of silicon dioxide nanoparticle‐covered graphene oxide on mechanical properties, thermal stability and rheological performance of thermoplastic polyurethanes

“…27 . The XRD spectrum of SiO 2 shows a broad peak at 23.3°, which corresponds to the (111) crystalline plane 28 . The diffraction peak of silica covers the diffraction peak of TGO in the XRD spectrum of TGOS.…”

Boron Recovery from Organic Solutions Used in Brine Treatment through a Water Stream

“…Other studies have focused on recovering boron from various sources such as seawater [16], geothermal waters [17,18], ore [19,20] and tailings [21] employing different solvents and procedures [22][23][24]. Meanwhile, other research has targeted to recovery of lithium from wastewater containing high concentrations of boron or magnesium, using organic solvents [25,26], with the intention of retaining boron in the residue and preventing contamination of the product [27,28].…”

Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review

“…In past decades, a variety of methodologies such as precipitation [ 28 ], extraction [ 29 ], ion exchange [ 30 ], adsorption [ 31 ], and membrane [ 32 ] processes have been studied for boron removal [ 33 ]. The reported results indicate that boron is much more difficult to remove than many metalloids.…”