Interlayer-free Silica Pectin Membrane for Wetland Saline Water via Pervaporation

Rampun, Erdina Lulu Atika; Elma, Muthia; Syauqiah, Isna; Putra, Meilana Dharma; Rahma, Aulia; Pratiwi, Amalia Enggar

doi:10.14710/jksa.22.3.99-104

Cited by 9 publications

(6 citation statements)

References 35 publications

(3 reference statements)

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“…On the other hand, wetland saline water (WSW) in South Kalimantan has become a serious problem that should be solved. WSW salinity is even reached 40,000 ppm (3.5wt%) (Rampun, Elma, et al, 2019b). This value is found to be worst in the dry season because the water gets evaporated, and more salt remains in the water.…”

Section: Introductionmentioning

confidence: 97%

“…In principle, pervaporation is the separation of the mixture process by partial vaporization, which involves membrane (non-porous or porous). To apply low pressure, a vacuum pump is required (Rampun et al, 2019b, Van der Bruggen & Luis, 2015. The pervaporation driving force is worked through chemical potential related to the concentration gradient between phases side by side of the interfacial barrier 1 st ICESET 2020 272 (Crespo & Brazinha, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Wetland Saline Water and Acid Mine Drainage Desalination by InterlayeFree Silica Pectin Membrane from Banan Peels

Elma

Akhbar

Mustalifah

et al. 2020

Nusantara Science and Technology Proceedings

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Wetland water and acid mine drainage are available in South Kalimantan, Indonesia. However, "Wetland saline water (WSW)" phenomena occur in the wetland areas due to the seawater intrusion, this water which contains a high salt concentration is unsafe to be consumed. While acid mine drainage (AMD) pollution becomes an issue in the mining industry that impact human life and the environment. Salt particles could be removed by using a silica pectin membrane. Banana peel has a high pectin substance. Banana pectin (0.5wt% and 0.1wt%) was employed in silica and calcined at 300 and 400 °C. We demonstrate the silica pectin template's performance without interlayer for wetland water and acid mine drainage desalination. Membranes were developed through a sol-gel method with silica source deposited from tetraethyl orthosilicate (TEOS) and performed by pervaporation at room temperature (~25 °C). As a result, 0.5wt% banana pectin concentration at 300 °C exhibited excellent performance with the highest water fluxes are 8.4 and 10.4 kg m −2 h −1 for WSW and AMD, respectively. Nevertheless, both membranes achieved high salt rejections up to 92%. Thereby, banana pectin as a carbon source impacts the stronger silica bond.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Wetland Saline Water and Acid Mine Drainage Desalination by InterlayeFree Silica Pectin Membrane from Banan Peels

Elma

Akhbar

Mustalifah

et al. 2020

Nusantara Science and Technology Proceedings

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“…Other studies have also been conducted using TEOS as a silica precursor, where synthetic carbon P123 is inserted to form a triblock copolymer (Elma et al, 2019;Rahma et al, 2020b). In addition, pectin from apple peel is natural carbon and has also been studied as a material to increase the hydrostability in silica membranes and produce relatively low silanol groups (Elma et al, 2020a;Rahma et al, 2019;Rampun et al, 2019;Syauqiyah et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Deconvolution of TEOS/TEVS Xerogel by Single or Dual Organic Catalyst Addition

Sumardi¹,

Elma²,

Lestari³

et al. 2021

Valensi

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Currently, xerogel has been applied as a filtration material, especially in membrane desalination. However, the xerogel matrix structure for desalination have to be designed properly in order to allow rejection of salt and obtain good hydro-stability, thus, silica precursor in the form of TEOS (tetraethyl orthosilicate)/TEVS (triethoxy vinyl silane) and organic acid catalyst are suitable material for fabrication. The aim of this study is therefore to fabricate and perform deconvolution of TEOS/TEVS xerogel by adding single or dual catalyst, using FTIR (Fourier-transform Infrared Spectroscopy) and Fityk software. The xerogel was fabricated by dried silica sol and calcined using RTP technique (rapid thermal processing) at 450 °C. Prior to this fabrication, the silica sol was synthesized by sol gel method, using a mixture of silica precursor TEOS/TEVS, ethanol solvent, and varied addition of single catalyst (citric acid) as well as dual catalyst (citric acid + ammonia) for 2 hours, at 50 °C. Subsequently, the xerogel was characterized by FTIR and the deconvolution was obtained through Gaussian approach, with Fityk software. All TEOS/TEVS xerogel samples indicated existence of silanol (Si-OH), siloxane (Si-O-Si) and silica-carbon (Si-C) functional groups. The xerogel deconvolution of TEOS/TEVS using single catalyst exhibit a peak area ratio of Si-OH/Si-O-Si, and this is similar to the dual catalyst counterpart of 0.24 (unit area) and 1.86 (unit area), for Si-C area ratio. This shows the addition of single catalyst was enough to produce deconvolution in TEOS/TEVS xerogel, dominated by siloxane functional group and carbon bonds with the ability to enhance membrane material hydro-stability’s fabrication.

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“…An inorganic-organic hybrid nanocomposite and carbon-templated silica can practically be produced by using a sol–gel process. Condensation in the sol–gel process allows organic polymer or polymer to bind with inorganic network [ 27 , 28 ], while, in carbon template, the carbon is added after the silica sol was produced [ 29 , 30 ]. Inorganic-organic hybrid nanocomposite materials and carbon-templated silica are a promising polymer membrane modified version for pervaporation process through water desalination.…”

Section: Introductionmentioning

confidence: 99%

“…Many previous researchers have used the TEOS [ 29 , 44 ], but only a few researchers employed ES40 [ 13 ]. Membrane usually also consists of thin film, -Al 2 O 3 interlayer with pore size of >0.05 m, and substrate of >0.5 m [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Hybrid and Templated Silica-P123 Membranes for Brackish Water Desalination

et al. 2020

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Water scarcity is still a pressing issue in many regions. The application of membrane technology through water desalination to convert brackish to potable water is a promising technology to solve this issue. This study compared the performance of templated TEOS-P123 and ES40-P123 hybrid membranes for brackish water desalination. The membranes were prepared by the sol–gel method by employing tetraethyl orthosilicate (TEOS) for the carbon-templated silica (soft template) and ethyl silicate (ES40) for the hybrid organo-silica. Both sols were templated by adding 35 wt.% of pluronic triblock copolymer (P123) as the carbon source. The silica-templated sols were dip-coated onto alumina support (four layers) and were calcined by using the RTP (rapid thermal processing) method. The prepared membranes were tested using pervaporation set up at room temperature (~25 °C) using brackish water (0.3 and 1 wt.%) as the feed. It was found that the hybrid membrane exhibited the highest specific surface area (6.72 m2·g−1), pore size (3.67 nm), and pore volume (0.45 cm3·g−1). The hybrid ES40-P123 was twice thicker (2 μm) than TEOS-P123-templated membranes (1 μm). Lastly, the hybrid ES40-P123 displayed highest water flux of 6.2 kg·m−2·h−1. Both membranes showed excellent robustness and salt rejections of >99%.

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Interlayer-free Silica Pectin Membrane for Wetland Saline Water via Pervaporation

Cited by 9 publications

References 35 publications

Wetland Saline Water and Acid Mine Drainage Desalination by InterlayeFree Silica Pectin Membrane from Banan Peels

Wetland Saline Water and Acid Mine Drainage Desalination by InterlayeFree Silica Pectin Membrane from Banan Peels

Deconvolution of TEOS/TEVS Xerogel by Single or Dual Organic Catalyst Addition

Development of Hybrid and Templated Silica-P123 Membranes for Brackish Water Desalination

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