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Chitra, Fara
Poltekkes Kemenkes Pontianak
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Dentistry Education Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health

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Filtration Tube Model Utilizing Coconut Husk for Domestic Wastewater Treatment: Oil Removal Method Hajimi, Hajimi; Adib, Moh; Chitra, Fara; Asmadi, Asmadi
JURNAL INFO KESEHATAN Vol 23 No 3 (2025): JURNAL INFO KESEHATAN
Publisher : Research and Community Service Unit, Poltekkes Kemenkes Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31965/infokes.Vol23.Iss3.1976

Abstract

The presence of oil and fat in household wastewater is a significant water pollutant, as it is typically disposed of without prior treatment. Coconut husks are a promising material that can be used as a filter medium. This study aimed to evaluate the effectiveness of coconut fiber filtration in the treatment of domestic wastewater. The study employed a quasi-experimental design with pre- and post-tests but no control group. Wastewater was passed through tubs filled with coconut husk. Three different filtration tub models were tested: Model A single baffle, Model B with three baffles, and Model C with no baffle. Oil content was monitored on the 3rd, 7th, 14th, 21st, and 28th days in milligrams per liter. A Kruskal-Wallis and Mann-Whitney test was conducted to compare the results of oil content reduction between filter models. The results revealed significant differences in the mean oil content reduction among the various tub models. The percentage of oil reduction reaches 95-99%. Furthermore, the Mann-Whitney test showed no significant difference between Models A and C. However, considerable differences were identified between Models A and C, as well as between Models B and C. In conclusion, this study provides evidence of the effectiveness of coconut husk filters in reducing oil levels, with nearly the maximum observed reduction achieved by the 28th day. Additionally, it is recommended to explore the long-term sustainability and potential applications of coconut husk filters in various oil removal scenarios.
The Influence of Electrode Plate Area in Reducing Turbidity and Color Levels in Peat Water Akhmadi, Zainal; Chitra, Fara; Wulantika, Daeng
Poltekita : Jurnal Ilmu Kesehatan Vol. 17 No. 3 (2023): November
Publisher : Poltekkes Kemenkes Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33860/jik.v17i3.3387

Abstract

Peat water generally exhibits characteristics ranging from dark brown to black, with high organic content and a pH range between 3.7 and 5.3. These features pose challenges in meeting clean water quality standards, essential for maintaining human health. Consequently, the treatment of peat water becomes a pressing need to enhance its quality for suitable use. Electrocoagulation has emerged as a widely applied method in peat water treatment. This research aims to evaluate the influence of electrode plate area and contact time in reducing turbidity and color in peat water. The research methodology employed a quasi-experimental design known as the One-Group Pretest-Posttest. Thirty test samples were collected with variations in electrode plate areas of 4 x 30 cm, 5 x 30 cm, and 6 x 30 cm. Contact time was varied within the range of 30, 60, 90, 120, and 150 minutes, applying a voltage of 48 volts. The results indicated fluctuations in the increase of turbidity in peat water after the electrocoagulation treatment. A plate area of 6 x 30 cm led to a turbidity increase of 27.33 NTU or approximately 83% after a contact time of 150 minutes. Meanwhile, the color level in peat water decreased by 65 TCU with a 5 x 30 cm electrode plate area after 150 minutes of contact time, achieving an effectiveness of 90% in color reduction. In conclusion, the electrode plate area significantly influences the reduction of turbidity and color in peat water. Although there is no discernible effect of contact time on turbidity levels, prolonged contact time has a significant impact on reducing the color level in peat water.
The Effect of Contact Time Variations of Activated Carbon from Coconut Shell on the Peroxide Value in Used Cooking Oil Djohan, Herlinda; Sungkawa, Hendra Budi; Chitra, Fara; Ningsih, Nur Reza
JURNAL INFO KESEHATAN Vol 22 No 4 (2024): JURNAL INFO KESEHATAN
Publisher : Research and Community Service Unit, Poltekkes Kemenkes Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31965/infokes.Vol22.Iss4.1856

Abstract

Cooking oil is a commonly used food product in daily life, both in households and commercially, especially for frying purposes. The repeated use of cooking oil can lead to an increase in peroxide value, which may pose health risks. High peroxide values are carcinogenic and can trigger various health problems, such as elevated cholesterol levels and heart disease. One method to reduce peroxide value is by using activated carbon, such as activated carbon derived from coconut shells. This study aims to analyze the effect of contact time variations of activated carbon from coconut shells on the reduction of peroxide value in used cooking oil. The research design used was a quasi-experiment with an iodometric testing method. A total of 24 samples of used cooking oil were treated with activated carbon from coconut shells for different contact times: 20 minutes, 30 minutes, and 40 minutes. The peroxide value was then measured. The results showed that varying the contact time with activated carbon from coconut shells resulted in the following average peroxide values: 15.57 meq O2/kg, 7.57 meq O2/kg, 6.58 meq O2/kg, and 5.82 meq O2/kg. The percentage reduction in peroxide value was 0%, 51.41%, 57.06%, and 62.64%, respectively. In conclusion, the study found a significant effect of contact time variations of activated carbon from coconut shells on the reduction of peroxide value in used cooking oil, with a probability value of 0.000 < 0.05.
The Effect of Giving Forest Guava Fruit Yogurt (Bellucia pentamera Naudin) on the Growth of Esterichia coli Bacteria in Mice (Mus musculus) Agusanty, Shelly Festilia; Salim, Maulidiyah; Chitra, Fara
Jurnal Penelitian Pendidikan IPA Vol 11 No 2 (2025): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i2.9077

Abstract

This research investigates the effect of forest guava fruit yogurt (Bellucia pentamera Naudin) on the growth of Escherichia coli bacteria in mice (Mus musculus). The study utilized an experimental design with treatment and control groups. Mice were divided into four groups: three treatment groups received forest guava fruit yogurt at concentrations of 5, 10, and 15%, respectively, administered at 0.5 ml per dose daily for 14 days, while the control group was given plain yogurt. E. coli growth was assessed by analyzing fecal samples from each group. The findings revealed that the growth of E. coli bacteria in the mice decreased significantly after administration of forest guava fruit yogurt, with the most pronounced reduction observed in the group receiving the 15% concentration. In contrast, the control group, which received plain yogurt, exhibited a less marked decrease in E. coli growth. These results suggest that forest guava fruit yogurt has a stronger inhibitory effect on E. coli bacteria compared to plain yogurt. In conclusion, forest guava fruit yogurt appears to be an effective natural agent for reducing E. coli growth in mice, potentially offering added health benefits beyond those of conventional yogurt.
Co-Authors Adib, Moh Agusanty, Shelly Festilia Akhmadi, Zainal Amrullah Andi Hairil Alimuddin Anis Shofiyani Asmadi asmadi Cahnia Ambarwati Dea Natania Salsabilla Djohan, Herlinda Fathmawati Hajimi Hajimi, Hajimi Hendra Budi Sungkawa Hendra Budi Sungkawa, Hendra Budi Indrawati, Ratih Iswono Izzatul Yajidah Maulidiyah Salim Moh. Adib Naufal Fadhil Ramadani Ningsih, Nur Reza Nurhayati Nurhayati Nuri Andriani Nurul huda Rudiyansyah, R. Suharno Suharno Sunarsieh, Sunarsieh Susilawati Susilawati, Susilawati Taufik Anwar Winda Rahmalia Wulantika, Daeng yulia Zainal Akhmadi