Performance of Composite Membrane for Palm Oil Wastewater Treatment

Yuliwati, Erna; Porawati, Hilda; Elfidiah, Elfidiah; Melani, Ani

doi:10.11113/amst.v23n2.147

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…The samples were then dried in an oven at 50 • C for 24 h. Samples were left for 10 min to cool down before taking their dried weight (w d ). The following equation was used to calculate the total porosity (ε) of each sample and then the average porosity for each membrane was determined [22]:…”

Section: Porosity and Pore Size Of Membranesmentioning

confidence: 99%

Preparation and Characterization of Polysulfone Membranes Reinforced with Cellulose Nanofibers

et al. 2022

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The mechanical properties of polymeric membranes are very important in water treatment applications. In this study, polysulfone (PSF) membranes with different loadings of cellulose nanofibers (CNFs) were prepared via the phase inversion method. CNF was characterized through transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The pore morphology, mechanical properties, membrane performance and hydrophilicity of pure PSF membranes and PSF/CNF membranes were investigated. The changes in membrane pore structure with the addition of different CNF contents were observed using SEM images. It was shown that the calculated membrane pore sizes correlate with the membrane water fluxes. The pure water flux (PWF) of fabricated membranes increased with the addition of CNFs into the PSF matrix. It was shown that the optimal CNF loading of 0.3 wt.% CNF improved both the elastic modulus and yield stress of the PSF/CNF membranes by 34% and 32%, respectively (corresponds to values of 234.5 MPa and 5.03 MPa, respectively). This result indicates a strong interfacial interaction between the PSF matrix and the reinforced nanofibers. The calculated compaction factor (CF) showed that the membrane resistance to compaction could be improved with CNF reinforcement. Compared to pure PSF membrane, the hydrophilicity was significantly enhanced with the incorporation of 0.1 wt.%, 0.2 wt.% and 0.3 wt.% CNF, as shown by the water contact angle (WCA) results. It can be concluded that CNFs are homogeneously dispersed within the PSF matrix at CNF loading less than 0.5 wt.%.

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Section: Porosity and Pore Size Of Membranesmentioning

confidence: 99%

Preparation and Characterization of Polysulfone Membranes Reinforced with Cellulose Nanofibers

et al. 2022

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“…The structure of the porous membrane and TiO 2 nanoparticle hydrophilicity were directly correlated with membrane porosity, which was responsible for the higher liquid uptake. Details of the membrane fabrication process and the property determination procedure can be found in a previous study [14]. The selected main properties of the used wastewater in this study have been analyzed as shown in Table 1.…”

Section: Preparation Of Ultrafiltration Systemmentioning

confidence: 99%

Critical Flux and Fouling Analysis of PVDF-Mixed Matrix Membranes for Reclamation of Refinery-Produced Wastewater: Effect of Mixed Liquor Suspended Solids Concentration and Aeration

et al. 2022

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Fouling tends to cause a significant increase in hydraulic resistance, decreased permeate flux, or increased transmembrane pressure (TMP) when a process is operated under constant TMP or constant flux conditions. To control membrane fouling and maintain sustainable operation, the concept of critical flux has been discussed by several researchers. Various fouling mechanisms, such as macromolecule adsorption, pore plugging, or cake build-up, as well as hydrodynamic conditions, for example aeration, can take place at the membrane surface. This study aimed to investigate the effects of mixed liquor suspended solid (MLSS) concentration and air bubble flow rate (ABFR) on the critical flux and fouling behavior, when treating refinery-produced wastewater. To determine the critical flux values, the experimental flux-steps were the following: (1) the filtration began with a 30 min step duration at a low flux (10 to 20 L/m2h); (2) at the end of this step (after 30 min), the permeate flux was increased, (3) this step was repeated until the TMP did not remain constant at the constant permeate flux, (4) the critical flux was then achieved. A critical flux model with an R2 of 0.9 was, therefore, derived, which indicates that the particle properties were regulated by the suspended solids. The increase of MLSS concentration, from 3 mg/L to 4.5 mg/L, resulted in a decrease of the permeate flux by 18%. Moreover, an increase in ABFR, from 1.2 mL/min to 2.4 mL/min, increased the permeate flux, but this decreased with a greater flow rate of aeration. To assess the stability and reversibility of fouling during critical flux (Jc) determination using a mixed matrix membrane, flux-step methods were utilized. A step height of 14.3 L/m2h and 30 min duration were arbitrarily chosen. The flux increased to 32.5 L/m2h with a slight increase of trans membrane pressure (TMP), while the rate of increase became significant at a higher flux of 143.6 L/m2h, due to fouling. Overall, this study proved that the response of MLSS concentration and aeration affected the membrane performance, based on the critical flux and fouling behavior.

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“…Percobaan filtrasi ini dilakukan dalam kondisi vakum yang dibuat menggunakan pompa peristaltik (Master flex model 7553-79, Cole Palmer) dengan permeat yang disedot dari ujung terbuka serat sebagaimana yang diilustrasikan pada Gambar 2 (Yuliwati, Porawati, and Elfidiah, and Melani 2019). Level cairan di tangki umpan dipertahankan konstan selama percobaan.…”

Section: Proses Ultrafiltrasiunclassified

“…Kualitas air permeasi dari air limbah berminyak yang diolah oleh membran yang dimodifikasi menunjukkan bahwa membran memiliki kinerja antifouling yang baik (Yuliwati, Porawati, and Elfidiah, and Melani 2019). Membran memiliki aplikasi yang luas dalam pengolahan air limbah tekstil dengan perolehan fluks yang lebih tinggi dan kontaminan yang lebih sedikit.…”

Section: Proses Ultrafiltrasiunclassified

Teknologi Membran Ultrafiltrasi Untuk Pengelolaan Air Limbah Pencucian Industri Tekstil Eco-Print

Yuliwati¹,

Martini²,

Melani³

2021

PPTK

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Membran hidrofobik mikro untuk air limbah tekstil telah ditinjau dan didiskusikan secara ekstensif. Banyak penelitian mencoba menggunakan membran polivinilidena fluorida (PVDF) untuk memisahkan air limbah tekstil. Menggunakan membran hidrofobik, air limbah tekstil biasanya diproduksi sebagai permeat. Sedangkan membran hidrofilik dapat menghasilkan air yang bebas lemak dan kandungan bahan organik yang merembes. Membran PVDF telah dimodifikasi dengan perlakuan kimia untuk mendapatkan polimer yang berfungsi sesuai untuk persiapan membran dengan meningkatkan hidrofilisitas dan ketahanan terhadap pengotoran. Hasil penelitian ini menghasilkan permukaan luar PVDF membran berongga. Hasil dari analisis AFM mengungkapkan bahwa permukaan membran tidak mulus dan struktur seperti nodul dan agregat nodul terbentuk pada permukaan membran PVDF. Derajat kekasaran permukaan (Ra) dihasilkan masing-masing sebagai 12,28 nm, 18.65 nm dan 20,58 nm untuk PVDF dengan 3% TiO2, PVDF dengan 5% TiO2 dan PVDF dengan 10% TiO2. Hal ini dapat meningkatkan fluks mencapai 142,92 L/ m2h dengan pengurangan persentase COD sebesar 90,08%, BOD sebesar 85,92% dan TOC sebesar 92,34%.

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Performance of Composite Membrane for Palm Oil Wastewater Treatment

Cited by 5 publications

References 23 publications

Preparation and Characterization of Polysulfone Membranes Reinforced with Cellulose Nanofibers

Preparation and Characterization of Polysulfone Membranes Reinforced with Cellulose Nanofibers

Critical Flux and Fouling Analysis of PVDF-Mixed Matrix Membranes for Reclamation of Refinery-Produced Wastewater: Effect of Mixed Liquor Suspended Solids Concentration and Aeration

Teknologi Membran Ultrafiltrasi Untuk Pengelolaan Air Limbah Pencucian Industri Tekstil Eco-Print

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