Boron Removal by Membrane Distillation: A Comparison Study

Membranes

MohammedWali Hakami¹  AbdelKader Abdullah²  Ahmed Alsadun³  Abdullah Alkhudhiri³  Hosam Abu Homod³  Nawaf Bin Darwish³ 

[1] Chemical Engineering Technology Department, Jubail Industrial College, Jubail Industrial City 31961, Saudi Arabia;College of Engineering, Prince Sattam bin Abdulaziz University, P.O. Box 655, AlKharj 11942, Saudi Arabia;National Center for Desalination & Water Treatment Technology, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia;

关键词: boron;    membrane distillation;    synthetic seawater;    air gap membrane distillation;    vacuum membrane distillation;    permeate gap membrane distillation;   

DOI  :  10.3390/membranes10100263

来源: DOAJ

【 摘 要 】

Several Membrane Distillation (MD) technologies have been employed to remove boron from various concentrations. In this study, Vacuum Membrane Distillation (VMD), Permeate Gap Membrane Distillation (PGMD), and Air Gap Membrane Distillation (AGMD) are examined to evaluate their effectiveness when combined with several boron concentrations (1.5, 7 and 30 ppm) and operating parameters (circulation rate from 0.9 L/min to 5 L/min, feed temperature from 40 to 70 °C, and pH from 3–11). Those concentrations of boron are selected on the basis of the concentration of boron in the permeate side of the single-pass reverse osmosis (RO) system, Arabian Gulf, and contaminated brackish water. Moreover, synthetic seawater is treated to assess MD technologies’ effectiveness. A high removal efficiency of boron is accomplished by MD. AGMD, PGMD, and VMD are promising methods for the desalination industry. 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/m²·h for synthetic seawater. Furthermore, there is no noteworthy influence of the pH value on the boron removal efficiency.

【 授权许可】

Unknown