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All Journal Indonesian Journal of Science and Technology Jurnal Pendidikan Progresif
Nurul Huda
Lambung Mangkurat University
Humanities Computer Science & IT Education Environmental Science Public Health Social Sciences Other

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Step-by-Step Fabrication of PVDF-TiO2 Hollow Fiber Membrane and Its Application Desalination of Wetland Saline Water via Pervaporation M. Mahmud; Muthia Elma; Aulia Rahma; Nurul Huda; Riani Ayu Lestari; Awali S. K. Harivram; Erdina L. A. Rampun; Mohd H. D. Othman; Muhammad Roil Bilad
Indonesian Journal of Science and Technology Vol 8, No 3 (2023): (ONLINE FIRST) IJOST: December 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i3.63433

Abstract

Wetland water is opted as the source of domestic water supply when the availability of clean fresh water is scarce. Wetland water requires proper treatment due to the high concentration of organic matter and high salinity, particularly in the dry season. This research aims to synthesize, characterize, and investigate the performance of polyvinylidene fluoride (PVDF)-TiO2 hollow fiber membrane for wetland saline water desalination via pervaporation. The PVDF-TiO2 hollow fiber membranes were fabricated through the dry wet spinning method under various air gaps (10, 15, and 20 cm). Then, the resulting membranes were tested in a pervaporation process at temperatures of 25, 40, and 60°C. Results show that the incorporation of TiO2 into the PVDF matrix imparted hydrophilicity properties into the resultant membranes. The presence of TiO2 was confirmed by the TiO2 stretching vibration at 1640 cm-1 (FTIR) and the TiO2 phase at diffraction peaks at 25.5 and 37°. The membranes exhibited the highest water flux (7.48 kg/m2.h) and salt rejection ( 99.5%) at 40°C. Overall, the developed PVDF-TiO2 hollow fiber membranes showed encouraging results and demonstrated their effectiveness for the desalination of wetland saline water.
Improving Students Self-Efficacy in Studying Salt Hydrolysis using the SCCrT Model Rusmansyah Rusmansyah; Nurul Huda; Mahdian Mahdian; Abdul Hamid; Mohamad Nor Aufa; Linda Safitri
Jurnal Pendidikan Progresif Vol 13, No 2 (2023): Jurnal Pendidikan Progresif
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Lampung

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Abstract: Improving Students Self-Efficacy in Studying Salt Hydrolysis Using the SCCrT Model. Objectives: This study aims to determine the differences in the Self-Efficacy of students who learn to use the SCCrT (Scientific Critical Creative Thinking) model with the DI (Direct Instruction) model. Methods: This research is an experimental study of quasi-experimental design with a sample of 69 people consisting of 2 classes with data collection techniques using a questionnaire consisting of 15 statements using four aspects of self-efficacy. Data analysis was descriptive quantitative, and quantitative inferential with SPSS version 25. Findings:  The application of the SCCrT model affects students self-efficacy acquisition, which is characterized by differences in the self-efficacy results with classes that apply the DI model with an average significance value of 0.00. Conclusion: There are differences in students self-efficacy between classes that study with the SCCrT model and courses that use the DI model. The SCCrT model performed better than the DI model in the average category, and the DI model performed well in the salt hydrolysis material category.Keywords: self-efficacy, salt hydrolysis, SCCrT model. DOI: http://dx.doi.org/10.23960/jpp.v13.i2.202322
Co-Authors Abdul Hamid Aulia Rahma Awali S. K. Harivram Erdina L. A. Rampun Linda Safitri M. Mahmud Mahdian Mahdian Mohamad Nor Aufa Mohd H. D. Othman Muhammad Roil Bilad Muthia Elma Riani Ayu Lestari Rusmansyah Rusmansyah