Removal of As(<scp>iii</scp>) and As(<scp>v</scp>) from water using green, silica-based ceramic hollow fibre membranes <i>via</i> direct contact membrane distillation

Hubadillah, Siti Khadijah; Othman, Mohd Hafiz Dzarfan; Kadir, Siti Hamimah Sheikh Abdul; Jamalludin, Mohd Riduan; Harun, Zawati; Aziz, Mustafa Kamal Abdul; Rahman, Mukhlis A.; Nomura, Mikihiro; Honda, Sawao; Iwamoto, Yuji; Fansuri, Hamzah

doi:10.1039/c8ra08143c

Cited by 27 publications

(13 citation statements)

References 44 publications

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“…These membranes are inherently hydrophilic and surface modifications are required to prevent membrane wetting in MD. A highly hydrophobic or omniphobic layer was synthesized with fluorination yielding a contact angle of 160° [ 129].…”

Section: Ceramic MD Membranesmentioning

confidence: 99%

Membrane distillation: recent technological developments and advancements in membrane materials

et al. 2021

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Membrane distillation (MD) is a novel desalination technology that has potential to produce distilled quality water from high salinity brine streams. The driving force for MD is the vapor pressure difference across a hydrophobic membrane resulting in transfer of water vapor from hot to cold side. This vapor contacts a cold surface and condenses to produce distillate. This paper reviews recent and/or multi-year research programs that focused on MD pilot or field testing. The various investigations concluded that while MD can produce distilled water quality, the energy efficiency remains the key bottleneck for future deployment of MD. Membrane wetting and fouling also presents key challenges for desalination due to both the high salinity and the presence of organics in the feed water. The authors contacted several MD vendors requesting updates on their latest products and technology developments. MD vendors with innovative module designs, some of which promise a step change in performance, have recently emerged on the market. In addition to water desalination, MD has a wide range of industrial applications such as hydrogen sulfide removal, the treatment of wastewater from the pharmaceutical, metal finishing industries, direct sewer mining, oily wastewater, and water recovery from flue gas. This paper also reviews novel membrane chemistries with emphasis on membranes prepared by phase inversion and electrospinning techniques to which nanomaterials have been added. The primary objectives in adding various nanomaterials (e.g., carbon nanotubes, graphene, silicon dioxide, fluorinated compounds) are to increase hydrophobicity (to reduce wetting) and increase mass transfer rates (to increase flux and lower cost).

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Section: Ceramic MD Membranesmentioning

confidence: 99%

Membrane distillation: recent technological developments and advancements in membrane materials

et al. 2021

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“…In this study, a 100 mL measuring cylinder was used to measure the volume of permeate. Rejection rate is also an essential characterization of operation stability in the MD process [26][27][28]. The rejection rate was indicated by permeate conductivity in this study, which was measured using a conductivity meter (S470 Seven Excellence, Mettler Toledo, Switzerland).…”

Section: Integrated With Crystallization Characterizationsmentioning

confidence: 99%

Separation and Recycling of Concentrated Heavy Metal Wastewater by Tube Membrane Distillation Integrated with Crystallization

Lou

Bai

et al. 2020

Membranes

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Tube membrane distillation (MD) integrated with a crystallization method is used in this study for the concurrent productions of pure water and salt crystals from concentrated single and mixed system solutions. The effects of concentrated Zn2+ and Ni2+ on performance in terms of membrane flux, permeate conductivity, crystal recovery rates, and crystal grades are investigated. Preferred crystallization and co-crystallization determinations were performed for mixed solutions. The results revealed that membrane fluxes remained at 2.61 kg·m−2·h−1 and showed a sharp decline until the saturation increased to 1.38. Water yield conductivity was below 10 μs·cm−1. High concentrated zinc and nickel did not have a particular effect on the rejection of the membrane process. For the mixed solutions, membrane flux showed a sharp decrease due to the high saturation, while the conductivity of permeate remained below 10 μs·cm−1 during the whole process. Co-crystallization has been proven to be a better method due to the existence of the SO42− common-ion effect. Membrane fouling studies have suggested that the membrane has excellent resistance to fouling from highly concentrated solutions. The MD integrated with crystallization proves to be a promising technology for treating highly concentrated heavy metal solutions.

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“…Co-SiO2 was synthesized with a process modified from Ref. [15][16]: Rice husks (from a farm in Honghe, Yunnan province, China.) were rinsed in 1 mol/L HCl at 363 K for 24 h to eliminate metallic impurities, and filtered out and washed with distilled water until no Clwas detected.…”

Section: Synthesis Of Co-sio2mentioning

confidence: 99%

“…It is rich in silicon compound and has been used as silicon source to prepare silica long time ago [11][12][13][14]. Recently, silica source from rice husk ash was used as an alternative for the synthesis of mesoporous silica [15][16]. However, typical template, such as cetyltrimethylammonium bromide (CTAB) was still used as template in these synthesis processes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of cobalt doped mesoporous silica by using the rice husks as both silicon source and template with its catalytic oxidation of 2-methyl pyridine

et al. 2020

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Cobalt doped mesoporous silica (Co-SiO2) was prepared using the rice husks as both silicon source and template. Structural characterization of the catalysts was done by various techniques, such as Xray diffraction, FT-IR, N2 adsorption/desorption, and scanning electron microscopy. Co-SiO2 was used as a catalyst for the oxidation of 2-methyl pyridine and exhibited high substrate conversion (94.6%) and good product (2-pyridinecarboxylic acid) selectivity (92.4%). It even exhibited higher selectivity than Co-MTiO2, Co-MCM-41, Co-SBA-15. Fast hot catalyst filtration experiment proved that the catalyst acted as a heterogeneous one and it can be reused with almost the same activity.

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Removal of As(iii) and As(v) from water using green, silica-based ceramic hollow fibre membranes via direct contact membrane distillation

Abstract: Arsenite [As(iii)] and arsenate [As(v)] removal by direct contact membrane distillation (DCMD) using novel hydrophobic green, silica-based ceramic hollow fibre membranes derived from agricultural rice husk was investigated in this work.

Cited by 27 publications

References 44 publications

Membrane distillation: recent technological developments and advancements in membrane materials

Membrane distillation: recent technological developments and advancements in membrane materials

Separation and Recycling of Concentrated Heavy Metal Wastewater by Tube Membrane Distillation Integrated with Crystallization

Synthesis of cobalt doped mesoporous silica by using the rice husks as both silicon source and template with its catalytic oxidation of 2-methyl pyridine

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