Water Recovery from Highly Saline Dye Wastewater by Membrane Distillation Using a Superhydrophobic SiO2/PVDF Membrane

Shuangling Xie; Jiale Du; Xuan Huang; Ailiang Gu; Shengqiong Fang; Riri Liu; Dong Zou; Jiuyang Lin; Ming Xie; Shuaifei Zhao; Wenyuan Ye

doi:10.1021/acsestwater.2c00519

Water Recovery from Highly Saline Dye Wastewater by Membrane Distillation Using a Superhydrophobic SiO₂/PVDF Membrane

Shuangling Xie, Jiale Du, Xuan Huang, Ailiang Gu, Shengqiong Fang, Riri Liu, Dong Zou, Jiuyang Lin, Ming Xie, Shuaifei Zhao, Wenyuan Ye

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

14 Citations (SciVal)

Abstract

Membrane distillation (MD) has been widely used for resource recovery from high-salinity wastewater, due to its superior technical merits of high separation efficiency and potential integration of low-grade heat. Herein, a robust superhydrophobic PVDF membrane prepared by spray-coating of fluorinated silica nanoparticles was employed to treat highly saline dye wastewater by MD. Specifically, impacts of operation conditions, including temperature difference, feed flow-rate, salinity, dye concentration, and dye species, on MD performance of the fabricated superhydrophobic PVDF membrane were comprehensively investigated. The increase of temperature difference and feed flow-rate had a positive effect on the MD flux of the membrane. Conversely, the rise in salinity and dye concentration induced an adverse impact on the MD flux. Furthermore, the superhydrophobic PVDF membrane showed a strong robustness in treating complex streams, as demonstrated by consistently stable MD flux using various dye/NaCl mixed solutions. Due to the robust surface superhydrophobicity, the fabricated PVDF membrane exhibited impressive antiwetting and antifouling properties against highly saline dye wastewater, consistently stable permeation flux, and high dye/salt removal efficiency (>99.99%). Moreover, the superhydrophobic membrane showed a high water recovery (90%) from highly saline dye wastewater with a slight reduction (13.4%) in permeation flux during a 39 h MD filtration. These results signify the promising practicability of the fabricated superhydrophobic PVDF membrane in sustainable management of highly saline dye wastewater via MD.

Original language	English
Pages (from-to)	1893-1901
Number of pages	9
Journal	ACS ES and T Water
Volume	3
Issue number	7
Early online date	17 Nov 2022
DOIs	https://doi.org/10.1021/acsestwater.2c00519
Publication status	Published - 14 Jul 2023

Bibliographical note

Funding Information:
J.L. and D.Z. would like are thankful for funding support from the Natural Science Foundation of Fujian Province (Grant No.: 2021J01628), Natural Science Foundation of Jiangsu Province (Grant No.: BK20220350), National Natural Science Foundation of China (Grant No.: 22208145) and Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No.: 22KJB530002). M.X. is also thankful for financial support from the Royal Society (Grant No.: IEC\NSFC\211021).

Keywords

antiwetting and antifouling
desalination
highly saline dye wastewater
membrane distillation
superhydrophobic membrane

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Chemistry (miscellaneous)
Environmental Chemistry
Water Science and Technology

Access to Document

10.1021/acsestwater.2c00519

Cite this

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title = "Water Recovery from Highly Saline Dye Wastewater by Membrane Distillation Using a Superhydrophobic SiO2/PVDF Membrane",

abstract = "Membrane distillation (MD) has been widely used for resource recovery from high-salinity wastewater, due to its superior technical merits of high separation efficiency and potential integration of low-grade heat. Herein, a robust superhydrophobic PVDF membrane prepared by spray-coating of fluorinated silica nanoparticles was employed to treat highly saline dye wastewater by MD. Specifically, impacts of operation conditions, including temperature difference, feed flow-rate, salinity, dye concentration, and dye species, on MD performance of the fabricated superhydrophobic PVDF membrane were comprehensively investigated. The increase of temperature difference and feed flow-rate had a positive effect on the MD flux of the membrane. Conversely, the rise in salinity and dye concentration induced an adverse impact on the MD flux. Furthermore, the superhydrophobic PVDF membrane showed a strong robustness in treating complex streams, as demonstrated by consistently stable MD flux using various dye/NaCl mixed solutions. Due to the robust surface superhydrophobicity, the fabricated PVDF membrane exhibited impressive antiwetting and antifouling properties against highly saline dye wastewater, consistently stable permeation flux, and high dye/salt removal efficiency (>99.99%). Moreover, the superhydrophobic membrane showed a high water recovery (90%) from highly saline dye wastewater with a slight reduction (13.4%) in permeation flux during a 39 h MD filtration. These results signify the promising practicability of the fabricated superhydrophobic PVDF membrane in sustainable management of highly saline dye wastewater via MD.",

keywords = "antiwetting and antifouling, desalination, highly saline dye wastewater, membrane distillation, superhydrophobic membrane",

author = "Shuangling Xie and Jiale Du and Xuan Huang and Ailiang Gu and Shengqiong Fang and Riri Liu and Dong Zou and Jiuyang Lin and Ming Xie and Shuaifei Zhao and Wenyuan Ye",

note = "Funding Information: J.L. and D.Z. would like are thankful for funding support from the Natural Science Foundation of Fujian Province (Grant No.: 2021J01628), Natural Science Foundation of Jiangsu Province (Grant No.: BK20220350), National Natural Science Foundation of China (Grant No.: 22208145) and Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No.: 22KJB530002). M.X. is also thankful for financial support from the Royal Society (Grant No.: IEC\NSFC\211021). ",

year = "2023",

month = jul,

day = "14",

doi = "10.1021/acsestwater.2c00519",

language = "English",

volume = "3",

pages = "1893--1901",

journal = "ACS ES and T Water",

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TY - JOUR

T1 - Water Recovery from Highly Saline Dye Wastewater by Membrane Distillation Using a Superhydrophobic SiO2/PVDF Membrane

AU - Xie, Shuangling

AU - Du, Jiale

AU - Huang, Xuan

AU - Gu, Ailiang

AU - Fang, Shengqiong

AU - Liu, Riri

AU - Zou, Dong

AU - Lin, Jiuyang

AU - Xie, Ming

AU - Zhao, Shuaifei

AU - Ye, Wenyuan

N1 - Funding Information: J.L. and D.Z. would like are thankful for funding support from the Natural Science Foundation of Fujian Province (Grant No.: 2021J01628), Natural Science Foundation of Jiangsu Province (Grant No.: BK20220350), National Natural Science Foundation of China (Grant No.: 22208145) and Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No.: 22KJB530002). M.X. is also thankful for financial support from the Royal Society (Grant No.: IEC\NSFC\211021).

PY - 2023/7/14

Y1 - 2023/7/14

N2 - Membrane distillation (MD) has been widely used for resource recovery from high-salinity wastewater, due to its superior technical merits of high separation efficiency and potential integration of low-grade heat. Herein, a robust superhydrophobic PVDF membrane prepared by spray-coating of fluorinated silica nanoparticles was employed to treat highly saline dye wastewater by MD. Specifically, impacts of operation conditions, including temperature difference, feed flow-rate, salinity, dye concentration, and dye species, on MD performance of the fabricated superhydrophobic PVDF membrane were comprehensively investigated. The increase of temperature difference and feed flow-rate had a positive effect on the MD flux of the membrane. Conversely, the rise in salinity and dye concentration induced an adverse impact on the MD flux. Furthermore, the superhydrophobic PVDF membrane showed a strong robustness in treating complex streams, as demonstrated by consistently stable MD flux using various dye/NaCl mixed solutions. Due to the robust surface superhydrophobicity, the fabricated PVDF membrane exhibited impressive antiwetting and antifouling properties against highly saline dye wastewater, consistently stable permeation flux, and high dye/salt removal efficiency (>99.99%). Moreover, the superhydrophobic membrane showed a high water recovery (90%) from highly saline dye wastewater with a slight reduction (13.4%) in permeation flux during a 39 h MD filtration. These results signify the promising practicability of the fabricated superhydrophobic PVDF membrane in sustainable management of highly saline dye wastewater via MD.

AB - Membrane distillation (MD) has been widely used for resource recovery from high-salinity wastewater, due to its superior technical merits of high separation efficiency and potential integration of low-grade heat. Herein, a robust superhydrophobic PVDF membrane prepared by spray-coating of fluorinated silica nanoparticles was employed to treat highly saline dye wastewater by MD. Specifically, impacts of operation conditions, including temperature difference, feed flow-rate, salinity, dye concentration, and dye species, on MD performance of the fabricated superhydrophobic PVDF membrane were comprehensively investigated. The increase of temperature difference and feed flow-rate had a positive effect on the MD flux of the membrane. Conversely, the rise in salinity and dye concentration induced an adverse impact on the MD flux. Furthermore, the superhydrophobic PVDF membrane showed a strong robustness in treating complex streams, as demonstrated by consistently stable MD flux using various dye/NaCl mixed solutions. Due to the robust surface superhydrophobicity, the fabricated PVDF membrane exhibited impressive antiwetting and antifouling properties against highly saline dye wastewater, consistently stable permeation flux, and high dye/salt removal efficiency (>99.99%). Moreover, the superhydrophobic membrane showed a high water recovery (90%) from highly saline dye wastewater with a slight reduction (13.4%) in permeation flux during a 39 h MD filtration. These results signify the promising practicability of the fabricated superhydrophobic PVDF membrane in sustainable management of highly saline dye wastewater via MD.

KW - antiwetting and antifouling

KW - desalination

KW - highly saline dye wastewater

KW - membrane distillation

KW - superhydrophobic membrane

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