Hierarchical poly(vinylidene fluoride)/active carbon composite membrane with self-confining functional carbon nanotube layer for intractable wastewater remediation

被引：32

作者：

Chen Z. ^{[1
]}

Mahmud S. ^{[3
,4
]}

Cai L. ^{[1
]}

He Z. ^{[2
]}

Yang Y. ^{[2
]}

Zhang L. ^{[3
,4
]}

Zhao S. ^{[5
,6
]}

Xiong Z. ^{[2
]}

机构：

[1] School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan

[2] Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, 510006, Guangdong

[3] Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo

[4] University of Chinese Academy of Sciences, 19A Yuquan Rd. Shijingshan, Beijing

[5] State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen

[6] Deakin University, Geelong, Institute for Frontier Materials, VIC

来源：

Journal of Membrane Science | 2021年 / 603卷

基金：

中国国家自然科学基金;

关键词：

Active carbon; Carbon nanotube; Intractable pollutants; poly(vinylidene fluoride); Water remediation;

D O I：

10.1016/j.memsci.2020.118041

中图分类号：

学科分类号：

摘要：

The efficient removal of trace micro pollutants and heavy metals from wastewater has been deemed as major challenge in the field of water treatment. Membrane composites have shown promises for the removal of these contaminants via green chemistry principles (i.e. membrane filtration). However, membrane composites normally lack appropriate surface porosity which hinders their performance, and it oftentimes causes membrane fouling. In this work, in order to ensure simultaneous removal of trace micro pollutants and heavy metals, a multi-functional active carbon inlayed poly(vinylidene fluoride) (PVDF) composite membrane with antifouling surface of polyacryloyl hydrazide (PAH)-grafted-carbon nanotubes (CNTs) layer is fabricated for the cross-flowing separation of oil/water emulsion, and heavy metals removal. The as-prepared PVDF-membrane composite with highly porous structure is integrated with powdered activated carbon (PAC) inlayed via the delayed liquid-liquid de-mixing process. The system shows high dynamic adsorption capacity towards the removal of toxic micro pollutants such as nitro-phenol, sulfamerazine and bisphenol A. In addition, micro/nano-hierarchical surface is constructed on the PVDF membrane via phase inversion. This enables successful anchorage of PAH-grafted-CNTs as antifouling layer on the surface of the PVDF-membrane. The reductive hydrophilic PAH brush on CNTs adsorbs different kinds of trace heavy metals (i.e. Cu2+, Ni+, and Cr3+) through reduction process. The PAH-grafted-CNTs also endows the composite membrane with excellent antifouling towards proteins. © 2020 Elsevier B.V.

引用

共 35 条

[1]

Stoquart C., Servais P., Berube P.R., Barbeau B., Hybrid membrane processes using activated carbon treatment for drinking water: a review, J. Membr. Sci., 411-412, pp. 1-12, (2012)

[2]

Pendergast M.M., Hoek E.M., A review of water treatment membrane nanotechnologies, Energy Environ. Sci., 4, pp. 1946-1971, (2011)

[3]

Meinel F., Zietzschmann F., Ruhl A.S., Sperlich A., Jekel M., The benefits of powdered activated carbon recirculation for micropollutant removal in advanced wastewater treatment, Water Res., 91, pp. 97-103, (2016)

[4]

Jones O.A., Green P.G., Voulvoulis N., Lester J.N., Questioning the excessive use of advanced treatment to remove organic micropollutants from wastewater, Environ. Sci. Technol., 41, pp. 5085-5089, (2007)

[5]

Abbas A., Al-Amer A.M., Laoui T., Al-Marri M.J., Nasser M.S., Khraisheh M., Atieh M.A., Heavy metal removal from aqueous solution by advanced carbon nanotubes: critical review of adsorption applications, Separ. Purif. Technol., 157, pp. 141-161, (2016)

[6]

Shannon M.A., Bohn P.W., Elimelech M., Georgiadis J.G., Marinas B.J., Mayes A.M., Science and technology for water purification in the coming decades, Nanosci. Nanotechnol., 452, pp. 337-346, (2009)

[7]

Park H.B., Kamcev J., Robeson L.M., Elimelech M., Freeman B.D., Maximizing the right stuff: the trade-off between membrane permeability and selectivity, Science, 356, (2017)

[8]

Ajmani G.S., Goodwin D., Marsh K., Fairbrother D.H., Schwab K.J., Jacangelo J.G., Huang H., Modification of low pressure membranes with carbon nanotube layers for fouling control, Water Res., 46, pp. 5645-5654, (2012)

[9]

Huang H., Schwab K., Jacangelo J.G., Pretreatment for low pressure membranes in water treatment: a review, Environ. Sci. Technol., 43, pp. 3011-3019, (2009)

[10]

Kimura K., Hane Y., Watanabe Y., Amy G., Ohkuma N., Irreversible membrane fouling during ultrafiltration of surface water, Water Res., 38, pp. 3431-3441, (2004)

← 1 2 3 4 →