Boron removal

Theoretical and experimental studies of direct contact membrane distillation (DCMD) using commercially flat sheet hydrophobic polyvinylidene fluoride (PVDF) membrane were investigated to remove boron from simulated and natural seawater. Mass transfer mechanism and theoretical flux were determined using

This paper introduces a process synthesis strategy and optimization approach that accounts for boron removal considerations in Seawater Reverse Osmosis (SWRO) network design. The overall aim is to provide an improved understating of the performance of SWRO networks when specific requirements on boron

While removal efficiency of most components in water by RO membranes is very satisfactory, the removal of some trace elements such as boron by RO membranes, especially those with long service life, is relatively low. The interplay between pH and ionic strength is believed to be the key to understand

One of the key transport parameter—permeability, is being used as an intrinsic characteristic of membrane for reverse osmosis process prediction. In this study, the prediction of reverse osmosis process in terms of boron rejection was carried out in two steps. First, the permeability of boron existi

Boron (B) is an important element which should be considered seriously for drinking water production. Boron removal from seawater using nanofiltration (NF) and reverse osmosis (RO) membranes was investigated. Increase in salt concentration effects boron removal positively when RO membranes and negat

The electrodialytic removal of boron from seawater reverse osmosis permeate was examined in laboratory. Two model SWRO permeates were investigated. The composition of the first one (TDS 604 mg/L, B content 2.25 mg/L) was calculated using ROSA 6.0 software (DOW Chem.) assuming SW30HR-320 membrane, oc

Both pressure driven and electro-membrane processes show better boron removal efficiency when carried under alkaline conditions when the boric acid is ionized to a large extent. Even under such conditions the electrodialysis (ED) performance is, however, reported to be poor since low boron current e

Presently boron-rich chemical landfill leachate originating from Tarnowskie Góry is being treated by boronselective ion-exchange resin. Since the boron concentration in this feed water type is relatively high (approx. 70 mg of B/L), the IE column post-regeneration lyes, that are strongly acidic and

Orthoboric acid dissociation, which affects boron rejection in RO membranes, depends on salinity, temperature and pH. Lately, increasing demand of permeate low boron concentration raises questions regarding the optimal method for boron removal in both technical and economical aspects. Several method

Boron is biologically an essential nutrient for many plants but high boron concentrations in irrigation water cause toxic effects whereas low abundances require boron addition to maximize crop yields. High boron levels in drinking water can be also toxic to humans. There is no easy method for the re