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All Journal Eksergi: Chemical Engineering Journal Civil Engineering Journal Indonesian Journal of Chemistry COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Sewagati
Fadlilatul Taufany
Institut Teknologi Sepuluh Nopember, Surabaya
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Public Health Social Sciences Other

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Journal : Eksergi: Chemical Engineering Journal

 1 
Pengaruh Gliserol sebagai Plasticizer terhadap Karakterisasi Edible Film dari Kappa Karaginan Larasati, Wahyu Adinda; Rahmawati, Yeni; Taufany, Fadlilatul; Susianto, Susianto; Altway, Ali; Nurkhamidah, Siti
Eksergi Vol 21, No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12451

Abstract

Perkembangan industri pengemasan makanan di era mendatang akan beralih ke bahan alami dan ramah lingkungan yang bisa diproduksi dari biopolimer seperti pati dan hidrokoloid lainnya untuk mengurangi paparan polusi dari polimer sintetis. Kappa karaginan memiliki sifat yang rapuh, sehingga dibutuhkan plasticizer untuk menghasilkan edible film yang lebih elastis. Jenis plasticizer yang digunakan adalah gliserol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh konsentrasi gliserol terhadap karakterisasi edible film dari kappa karaginan. Kappa karaginan dengan konsentrasi 1% (b/v) dilarutkan dengan akuades kemudian ditambahkan gliserol dengan variasi konsentrasi 0,5; 1; 1,5, dan 2% (b/v). Edible film kemudian di karakterisasi berdasarkan sifat mekanik, gugus fungsional, ketebalan, kadar air, kuat tarik, elongasi, warna dan opacity. Hasil analisa menunjukkan bahwa penambahan gliserol sebesar 1% dapat meningkatkan sifat mekaniknya, dan film mempunyai 0,146 mm, kadar air 17,90%, kuat tarik dan elongasi 2,53 MPa dan 14,09% dan sifat optik warna dan opacity masing-masing sebesar 96,96% dan 1,32. 
Modelling Urea and Creatinine Concentration Distribution in Hollow Fiber Membranes for Hemodialysis Applications Fauziah, Melinda Nur; Nurkhamidah, Siti; Taufany, Fadlilatul; Altway, Ali; Susianto; Rahmawati, Yeni
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14515

Abstract

Humans are dynamic creatures who continue to follow developments over time. This development also has a big impact on changes in habits and has an impact on the health of everyone, which needs special attention in this era of globalization. One of the treatments for kidney failure patients is kidney function replacement therapy, namely haemodialysis. Haemodialysis therapy is a high technology to replace the function of the kidneys in removing metabolic waste (air, sodium, potassium, hydrogen, urea, creatinine, uric acid and other substances) through a semi-permeable membrane as a separator for blood and dialysate fluid in an artificial kidney (dialyzer). where the processes of diffusion, osmosis, and ultrafiltration occur. In this study, a hollow fiber type dialyzer was used which consisting of three main components: the shell (which directs dialysate flow), the porous membrane, and the tube (which carries blood). In general, this research will be carried out theoretically by developing a mathematical model of mass transfer in hollow fiber membranes in the haemodialysis process to study the distribution of urea and creatinine concentrations in the tube, membrane, and shell axial and radial section, the effect of pore area of membrane on urea and creatinine clearance, and the influence of dialysate flowrate on urea and creatinine clearance. The mathematical modeling successfully illustrates the distribution of urea and creatinine concentrations within the hollow fiber membrane both axially and radially, with a concentration decrease from blood to dialysate, influenced by diffusion and convection mechanisms. Simulation results indicate that increasing dialysate flowrate enhances haemodialysis efficiency, but its effect diminishes after reaching a certain threshold. Meanwhile, increasing the membrane surface area from 1.3 m² to 1.8 m² results in only a slight reduction in the urea concentration from 16.67 mol/m³ to 16.62 mol/m³ and creatinine from 8.85 mol/m³ to 8.83 mol/m³, demonstrating that membrane surface area has a smaller impact.
Fabrication and Characterization of Psf-TiO2/GO Membranes for Photocatalytic Decomposition of Dyes in Batik Liquid Waste Arofah, Rosyida Nofiana; Rahmawat, Yeni; Taufany, Fadlilatul; Nurkhamidah, Siti
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14654

Abstract

One of the important processes in making batik cloth is dyeing which requires large amounts of water. Liquid waste from washing and rinsing batik cloth produces color from residual dye and can be the main source of water pollution. One method of removing dyes is the ultrafiltration process using Membrane Technology for photocatalytic decomposition. In this research, polysulfone (PSf) membrane uses addition of different TiO2 compositions (1, 1.5, 2, 3, and 5 wt.%) and graphene oxide (GO) of 0.5 wt.% composition as photocatalyst. The photocatalyst can store energy therefore the photocatalytic process can be performed in a visible light environment. To identify the best composition of photocatalysts, photocatalytic performances were tested by the removal of methyl violet as dye along with characterization of the membranes for the morphological and physicochemical properties using FTIR, SEM, XRD, and DMA. The highest performance under visible light was shown by a membrane containing 5 wt.% TiO2, which provided a permeate flux of 22.97 L m-2 h-1 and dye removal of up to 89.84%. The findings indicated that the PSf membrane matrix's stability and photocatalytic enhanced potential are driven by the cooperative interaction between TiO2 and GO nanoparticles, which function as photocatalysts.
Comparative Analysis of CO₂ Content in Biogas and Synthetic Gas Using Chittick Titration Validated by Gas Chromatography Pambudi, Alfian Wisnu; Rahmawati, Yeni; Taufany, Fadlilatul; Altway, Ali; Susianto
Eksergi Vol 22 No 2 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i2.14809

Abstract

This study aimed to validate the Chittick titration method for measuring carbon dioxide (CO2) content using gas chromatography (GC) as the reference method. Two types of gas samples were analyzed: synthetic CO2/N2 gas with a theoretical composition of 40:60 and biogas produced by anaerobic fermentation. Analyses were conducted in parallel using both methods to compare CO2 measurements. For synthetic gas, the Chittick titration recorded an average CO2 content of 39.11%, whereas GC recorded 40.52%. For biogas, Chittick titration produced 30.16%, whereas GC measured 31.40%. The differences between the methods were 0.81% for synthetic gas and 1.55% for biogas, with relative errors of 2.00% and 3.45%, respectively. The t-test results showed statistically significant differences (p < 0.05) between the methods for both gas types. However, the observed deviations remained within practically acceptable limits for small-scale laboratory applications. These findings suggest that Chittick titration is a practical and cost-effective alternative for estimating CO2 content, particularly in laboratories with limited access to gas chromatography equipment. This study is expected to serve as a useful reference for educational institutions and small laboratories that are seeking to develop simple gas analysis methods with adequate validity.
Effect of Diethanolamine (DEA) Solvent Flow Rate on the CO2 Absorption-Desorption Process Using a Hollow Fiber Membrane Contactor Pamungkas, Raditya; Nurkhamidah, Siti; Taufany, Fadlilatul; Altway, Ali; Susianto, Susianto; Rahmawati, Yeni
Eksergi Vol 22 No 3 (2025)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v22i3.14951

Abstract

One of the primary objectives in decarbonization is the separation of CO₂ from industrial gas mixtures, particularly in application such as biogas purification and flue gas treatment. A dual-layer crossflow membrane module was utilized under both circulation and batch operating modes with a 30% DEA solution. This study investigates the influence of solvent flow velocity on CO₂ separation performance using a hollow fiber membrane contactor with a 30% DEA solvent. the process was evaluated under two operating modes: batch and solvent circulation. Key variables measured include the solvent flow rate (40–160 mL/min), operating temperature (30–50°C), and sweep gas flow rate (100–300 mL/min). The results indicate that under continuous operation with a solvent flow rate of 160 mL/min, a temperature of 30°C, and a sweep gas flow rate of 100 mL/min, 50.42% of the CO₂ was successfully removed. In contrast, the batch system, under identical conditions achieved only a 27.8% removal rate. The superior performance in circulation mode is attributed to the continuous renewal of the solvent, which sustains a stable concentration gradient and minimizes mass transfer resistance. These findings underscore the potential of membrane-based systems with optimized solvent circulation for efficient and stable CO₂ capture in industrial applications.
Pengaruh Gliserol sebagai Plasticizer terhadap Karakterisasi Edible Film dari Kappa Karaginan Larasati, Wahyu Adinda; Rahmawati, Yeni; Taufany, Fadlilatul; Susianto, Susianto; Altway, Ali; Nurkhamidah, Siti
Eksergi Vol 21 No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12451

Abstract

Perkembangan industri pengemasan makanan di era mendatang akan beralih ke bahan alami dan ramah lingkungan yang bisa diproduksi dari biopolimer seperti pati dan hidrokoloid lainnya untuk mengurangi paparan polusi dari polimer sintetis. Kappa karaginan memiliki sifat yang rapuh, sehingga dibutuhkan plasticizer untuk menghasilkan edible film yang lebih elastis. Jenis plasticizer yang digunakan adalah gliserol. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh konsentrasi gliserol terhadap karakterisasi edible film dari kappa karaginan. Kappa karaginan dengan konsentrasi 1% (b/v) dilarutkan dengan akuades kemudian ditambahkan gliserol dengan variasi konsentrasi 0,5; 1; 1,5, dan 2% (b/v). Edible film kemudian di karakterisasi berdasarkan sifat mekanik, gugus fungsional, ketebalan, kadar air, kuat tarik, elongasi, warna dan opacity. Hasil analisa menunjukkan bahwa penambahan gliserol sebesar 1% dapat meningkatkan sifat mekaniknya, dan film mempunyai 0,146 mm, kadar air 17,90%, kuat tarik dan elongasi 2,53 MPa dan 14,09% dan sifat optik warna dan opacity masing-masing sebesar 96,96% dan 1,32. 
Co-Authors Ali Altway Altway , Ali Amelia Nuri Ila, Qarina Putri Arofah, Rosyida Nofiana Baydillah, Pramudja Cahyadi, Mokhamad N. Darmawan, Raden Fauziah, Melinda Nur Haykal, Muhammad Husin Khoiriah, Ulfah Lailatul Koswara, Arwi Yudhi Larasati, Wahyu Adinda Nasori, Nasori Pambudi, Alfian Wisnu Pamungkas, Raditya Rahmawat, Yeni Setiyo Gunawan Siti Nurkhamidah Srikalimah Suhandri, Hendy F. Suryo, Is Bunyamin Susianto Susianto Susianto Tahiyatul Asfihani Yeni Rahmawati, Yeni Zuhdan, Alya Zahrani