Boron removal and recovery via vacuum assisted air gap membrane distillation-crystallization (VAGMD-C): A pilot-scale study

Oyku Mutlu-Salmanli; Anil Kazak; Turker Turken; Mehmet Emin Pasaoglu; Bihter Zeytuncu; Ismail Koyuncu

doi:10.1016/j.desal.2022.116229

Boron removal and recovery via vacuum assisted air gap membrane distillation-crystallization (VAGMD-C): A pilot-scale study

Oyku Mutlu-Salmanli, Anil Kazak, Turker Turken, Mehmet Emin Pasaoglu, Bihter Zeytuncu, Ismail Koyuncu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Boron is an essential element that is widely used in many industries. Due to its importance, it is beneficial to recover boron from water streams. The concentrate stream contains high boron content and is the major obstacle for membrane processes, due to its high salinity and contaminant content. Since membrane distillation (MD) can be used successfully to treat highly concentrated waters, the pilot scale vacuum-assisted air gap MD (VAGMD) unit was investigated in this study and boron removal efficiency from raw water and RO concentrate was evaluated. This operation was carried out with different recovery ratios through flow rate, conductivity, pressure and removal efficiencies and presented in this study. After the VAGMD operation the crystallization process was applied and up to 43.9 % B₂O₃ concentrated boron crystals were obtained.

Original language	English
Article number	116229
Journal	Desalination
Volume	547
DOIs	https://doi.org/10.1016/j.desal.2022.116229
Publication status	Published - 1 Feb 2023

Bibliographical note

Publisher Copyright:
© 2022

Keywords

Boron recovery
Crystallization
Pilot scale
Vacuum-assisted air gap membrane distillation

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10.1016/j.desal.2022.116229

Cite this

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title = "Boron removal and recovery via vacuum assisted air gap membrane distillation-crystallization (VAGMD-C): A pilot-scale study",

abstract = "Boron is an essential element that is widely used in many industries. Due to its importance, it is beneficial to recover boron from water streams. The concentrate stream contains high boron content and is the major obstacle for membrane processes, due to its high salinity and contaminant content. Since membrane distillation (MD) can be used successfully to treat highly concentrated waters, the pilot scale vacuum-assisted air gap MD (VAGMD) unit was investigated in this study and boron removal efficiency from raw water and RO concentrate was evaluated. This operation was carried out with different recovery ratios through flow rate, conductivity, pressure and removal efficiencies and presented in this study. After the VAGMD operation the crystallization process was applied and up to 43.9 % B2O3 concentrated boron crystals were obtained.",

keywords = "Boron recovery, Crystallization, Pilot scale, Vacuum-assisted air gap membrane distillation",

author = "Oyku Mutlu-Salmanli and Anil Kazak and Turker Turken and Pasaoglu, {Mehmet Emin} and Bihter Zeytuncu and Ismail Koyuncu",

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T1 - Boron removal and recovery via vacuum assisted air gap membrane distillation-crystallization (VAGMD-C)

T2 - A pilot-scale study

AU - Mutlu-Salmanli, Oyku

AU - Kazak, Anil

AU - Turken, Turker

AU - Pasaoglu, Mehmet Emin

AU - Zeytuncu, Bihter

AU - Koyuncu, Ismail

PY - 2023/2/1

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N2 - Boron is an essential element that is widely used in many industries. Due to its importance, it is beneficial to recover boron from water streams. The concentrate stream contains high boron content and is the major obstacle for membrane processes, due to its high salinity and contaminant content. Since membrane distillation (MD) can be used successfully to treat highly concentrated waters, the pilot scale vacuum-assisted air gap MD (VAGMD) unit was investigated in this study and boron removal efficiency from raw water and RO concentrate was evaluated. This operation was carried out with different recovery ratios through flow rate, conductivity, pressure and removal efficiencies and presented in this study. After the VAGMD operation the crystallization process was applied and up to 43.9 % B2O3 concentrated boron crystals were obtained.

AB - Boron is an essential element that is widely used in many industries. Due to its importance, it is beneficial to recover boron from water streams. The concentrate stream contains high boron content and is the major obstacle for membrane processes, due to its high salinity and contaminant content. Since membrane distillation (MD) can be used successfully to treat highly concentrated waters, the pilot scale vacuum-assisted air gap MD (VAGMD) unit was investigated in this study and boron removal efficiency from raw water and RO concentrate was evaluated. This operation was carried out with different recovery ratios through flow rate, conductivity, pressure and removal efficiencies and presented in this study. After the VAGMD operation the crystallization process was applied and up to 43.9 % B2O3 concentrated boron crystals were obtained.

KW - Boron recovery

KW - Crystallization

KW - Pilot scale

KW - Vacuum-assisted air gap membrane distillation

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DO - 10.1016/j.desal.2022.116229

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JF - Desalination

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Boron removal and recovery via vacuum assisted air gap membrane distillation-crystallization (VAGMD-C): A pilot-scale study

Abstract

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Keywords

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