Boron removal from saline water: A comprehensive review

The essentiality of B for growth and development of plants is well-known, but the primary functions of B still remain unknown. Evidence in the literature supports the idea that the major functions of B in growth and development of plants are based on its ability to form complexes with the compounds having cis-diol configurations. In this regard, the formation of B complexes with the constituents of cell walls and plasma membranes as well as with the phenolic compounds seems to be a decisive step affecting the physiological functions of B. Boron seems to be of crucial importance for the maintenance of structural integrity of plasma membranes. This function of B is mainly related to stabilisation of cell membranes by B association with membrane constituents. Possibly, B may also protect plasma membranes against peroxidative damage by toxic O2 species. In B-deficient plants, plasma membranes are highly leaky and lose their functional integrity. Under B-deficient conditions, substantial changes in ion fluxes and proton pumping activity of the plasma membranes were noted. Impairments in phenol metabolism and increases in levels of phenolics and polyphenoloxidase activity are typical indications of B deficiency, particularly in B deficiency-sensitive plant species, such as Helianthus annuus (sunflower). Enhanced oxidation of phenols is responsible for generation of reactive quinones which subsequently produce extremely toxic O2 species, thus resulting in the increased risk of a peroxidative damage to vital cell components such as membrane lipids and proteins. In B-deficient tissues, enhancement in levels of toxic O2 species may also occur as a result of impairments in photosynthesis and antioxidative defence systems. Recent evidence shows that the levels of ascorbic acid, non-protein SH-compounds (mainly glutathione) and glutathione reductase, the major defence systems of cells against toxic O2 species, are reduced in response to B deficiency. There is also increasing evidence that, in the heterocyst cells of cyanobacteria, B is involved in protection of nitrogenase activity against O2 damage.

Boron deficiency-induced impairments of cellular functions in plants: a review

Adsorptive removal of bisphenol A (BPA) from aqueous solution: A review.

Membrane synthesis for membrane distillation: a review

Extraction of lithium ions from salt-lake brines is very important to produce lithium compounds Herein, we report a new approach to construct polystyrene sulfonate (PSS) threaded HKUST-1 metal–organic framework (MOF) membranes through an in situ confinement conversion process The resulting membrane PSS@HKUST-1-67, with unique anchored three-dimensional sulfonate networks, shows a very high Li+ conductivity of 553×10−4 S cm−1 at 25 °C, 189×10−3 S cm−1 at 70 °C, and Li+ flux of 675 mol m−2 h−1, which are five orders higher than that of the pristine HKUST-1 membrane Attributed to the different size sieving effects and the affinity differences of the Li+, Na+, K+, and Mg2+ ions to the sulfonate groups, the PSS@HKUST-1-67 membrane exhibits ideal selectivities of 78, 99, and 10296 for Li+/Na+, Li+/K+, Li+/Mg2+ and real binary ion selectivities of 35, 67, and 1815, respectively, the highest ever reported among ionic conductors and Li+ extraction membranes

Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium-Ion Separation

Methods for boron removal from aqueous solutions — A review

Removal of boron from seawater by adsorption-membrane hybrid process: implementation and challenges

A submerged membrane-ion-exchange hybrid process for boron removal

Performances of novel chelating ion exchange resins for boron and arsenic removal from saline geothermal water using adsorption-membrane filtration hybrid process

Preparation of polymeric microspheres for removal of boron by means of sorption-membrane filtration hybrid

Joanna Wolska

Papers

Methods for boron removal from aqueous solutions — A review

Removal of boron from seawater by adsorption-membrane hybrid process: implementation and challenges

A submerged membrane-ion-exchange hybrid process for boron removal

Performances of novel chelating ion exchange resins for boron and arsenic removal from saline geothermal water using adsorption-membrane filtration hybrid process

Preparation of polymeric microspheres for removal of boron by means of sorption-membrane filtration hybrid