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All Journal ALKIMIA : Jurnal Ilmu Kimia dan Terapan Megasains Buletin GAW Bariri ( BGB) Casuarina: Environmental Engineering Journal
Syafaati, Ayu Diah
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Social Sciences

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Potential of Obtaining Electrical Energy in the Tofu Waste Treatment Process Through Microbial Fuel Cell (MFC) Syafaati, Ayu Diah; Wulan, Diana Rahayuning; Nugraha, Irwan
ALKIMIA Vol 3 No 2 (2019): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.399 KB) | DOI: 10.19109/alkimia.v3i2.3592

Abstract

Abstract - The need of energy in Indonesia was increasing and encouraging to develope some efficient renewable technology and environmental friendly researches. One of the alternative energy that can be used is Microbial Fuel Cell (MFC). Microbial Fuel Cell (MFC) works by using microorganisms to degrade organic compounds that can generate electrical energy. Several studies have been conducted on Single Chamber MFC. In this study, conducted to determine the effect of wastewater treatment through Stack Microbial Fuel Cell (MFC) on current producing. The system used carbon brush electrode, Proton Exchange Membrane (PEM) as cation exchanger, tofu liquid waste as source of substrate, and bacterial isolated tofu liquid waste as degrading organic substrate, that has known in system's ability to generate electrical energy as well as reduce COD value. Optical Density (OD) value was measured to determine the metabolic activity of bacteria, with wavelength 570 nm. The research showed that Microbial Fuel Cell (MFC) that lasted for 72 hours resulted potential of electrical current 0.96 mA at Stack MFC and Blank 0,43 mA. The acquisition of electric current Stack MFC was greater than Blank Single Chamber. In addition, it also decreased Chemical Oxygen Demand (COD) value in the range of 28-38%. Keywords - Chemical Oxygen Demand, Current, Microbial Fuel Cell , Stack MFC, Tofu liquid waste
Peningkatan Literasi Perubahan Iklim Generasi Muda di Universitas Muhammadiyah Sorong Syafaati, Ayu Diah; Satria, Budi
Buletin GAW Bariri (BGB) Vol 6 No 1 (2025): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v6i1.140

Abstract

Climate change has become a crucial issue affecting various aspects of life worldwide. The younger generation plays a vital role as agents of change in mitigating the impacts of climate change by increasing literacy and awareness of this issue. This study aims to examine the improvement of climate change literacy among young people in Muhammadiyah University of Sorong through an intervention in the form of material exposure. The research employs both quantitative and qualitative approaches with a pretest and post-test design, as well as the creation of climate action content. The intervention is conducted by providing material on climate change before the post-test is administered. Data is analyzed using the Normality Test and Hypothesis Test. The Paired Sample T – test is used as the Hypothesis Test to determine the difference in literacy levels before and after the intervention. A significant increase in students' understanding of climate change was observed, rising from 46% to 73%. The results indicate a significant improvement in climate change literacy after the intervention, demonstrating the effectiveness of this method.
ANALISIS KUALITAS UDARA PARAMETER PM2.5 DI WILAYAH KOTA SORONG BERBASIS ISPU Syafaati, Ayu Diah
Megasains Vol 14 No 2 (2023): Megasains Vol. 14 No. 2 Tahun 2023
Publisher : Stasiun Pemantau Atmosfer Global Bukit Kototabang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46824/megasains.v14i2.131

Abstract

Sorong City has an area of 1.105 km2 and is the most densely populated area in the Provinces of West Papua and Southwest Papua. As the population in Sorong City increases, human activities also increase which can contribute to increasing PM2,5 particulate concentrations. Sources of particulates in Sorong City came from anthropogenic activities such as city development projects, transportations, biomass burning, and other public activities in the area. PM2,5 that exceeds ambient air quality standards can harm human health. PM2,5 Observations were carried out at Global Atmosphere Watch Sorong Station using BAM Met-One 1020 automatic instrument. BAM-1020 automatically measures and records the level of particle concentrations in the air using Beta Ray Attenuation principle, namely the attenuation of beta particles through the collected solid matter. on fiber filters. PM2,5 solid matter collected in the fiber filter in a volume of ambient air that is drawn by the pump. In general, during September 2021 – June 2023, PM2,5 concentrations tend to increase. The results of the analysis showed that the daily average concentration of PM2,5 measured during September 2021 – June 2023 was in the range 1.21 – 18.71 ug/m3; still below the PM2,5 threshold value of 65 ug/m3 (24 hours). Based on the calculation of the PM2,5 parameter Air Pollutant Standard Index (ISPU), it is known that the ISPU value is in the range 0 – 50. Air quality conditions in Sorong area during this time were in the good category. The influence of meteorological parameters of rainfall and air temperature on PM2,5 concentrations in Sorong City has the most significant and strongest correlation, with a value of r=0.8 (air temperature) and r=-0.7 (rainfall).
Analisis Kualitas Udara Parameter Deposisi Basah dan Deposisi Kering di Sorong Tahun 2022 Syafaati, Ayu Diah; Yuni Kartika
Casuarina: Jurnal Teknik Lingkungan Vol 1 No 1 (2023): CEEJ OCT 2023
Publisher : LRI Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/ceej.v1i1.2748

Abstract

Acid deposition is a phenomenon of air pollution that is mostly associated with energy activities that emit acidic pollutant compounds into the atmosphere. Acid deposition is one of the effects of air pollution. Observation of air quality in Sorong City is needed to determine the level of air pollution that occurs due to natural factors and anthropogenic activities. Observation of acid deposition in Sorong City was carried out with two parameters, namely wet deposition and dry deposition. Observation of wet deposition using chemical measurements of rainwater in the form of pH, Conductivity, and Mineral Ion Concentration. Observation of dry deposition using SPM Particulate and Passive Gas (SO2 and NO2) parameters. The results show that the level of acidity (pH) of rainwater in Sorong City during 2022 is included in pH category of acidic rainwater that tends to be neutral. Meanwhile, the result of conductivity value is 2.2 – 50.9 µS/cm. The chemical composition in rainwater in Sorong City is dominated by chloride ions, sulfate ions, potassium ions and sodium ions, where the number of anions accounts for 59% of the total ions present in rainwater, and cations contribute 41%. During January to December 2022, daily SPM concentrations were in the range of 8.63 - 96.24 µg/m3. Based on the value of the quality standard, both daily and yearly, SPM value is still far below the applicable threshold value. The results of SO2 and NO2 measurements in Sorong City also show that concentration values are still below the air quality standard values.
Co-Authors Budi Satria Irwan Nugraha Wulan, Diana Rahayuning Yuni Kartika