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Jurnal Sains & Teknologi Lingkungan
Published by Universitas Islam Indonesia
ISSN : 20851227     EISSN : 25026119     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education
Jurnal Sains & Teknologi Lingkungan (JSTL) published twice a year in January and June is a scientific journal that publishes scientific research papers and ideas in the field of science and technology related to environmental issues. The journal covers typical subjects of environmental sciences and technologies such as.: Drinking water treatment, wastewater treatment, solid waste treatment, solid waste management, cleaner production, air pollution management, resource recovery, water pollution, soil contamination, and other relevant fields. JSTL published by the Islamic University of Indonesia (UII) only accepts original scientific works that have not been published by other medias. All incoming articles will be reviewed in advance by competent reviewers before being eligible for publication. JSTL (e-ISSN 2502-6119) has been accredited by Ministry of Research, Technology and Higher Education of the Republic of Indonesia.
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Articles 6 Documents
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Search results for , issue "Vol. 17 No. 1 (2025): SAINS " : 6 Documents clear
Identifikasi Identifikasi Jenis, Warna, dan Ukuran Mikroplastik pada Air dan Sedimen di Sungai Buntung, Kabupaten Sidoarjo, Jawa Timur Amelia, Oktavia Eka; Suprayogi, Dedy; Nengse, Sulistiya
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art1

Abstract

The river in Sidoarjo has been contaminated with microplastics. One of the rivers in Sidoarjo which has quite a lot of sources of pollution is the Buntung River, such as the presence of rubbish heaps and burning of rubbish around the river. This research aims to determine the type, color and size of microplastics, as well as differences in the abundance of microplastics in water and sediment in the Buntung River, Sidoarjo. This research is quantitative descriptive. The sampling locations were 6 locations. Sample preparation was carried out using a solution of 0.05 M Fe(II), 30% hydrogen peroxide (H2O2), and NaCl. Then the samples were identified using a stereo microscope and the EpView application, while for comparison of the average abundance of water and sediment using the Independent T-Test. The results showed that in the water samples the most dominant type was 39% fragments, 30% blue, 53% measuring 0.1 mm - 0.5 mm, and the average abundance was 3,725 particles/m3. Meanwhile, in the sediment samples, the most dominant type was fragments 46%, blue 28%, size 0.1 mm – 0.5 mm 70%, and an average abundance of 1,735 particles/kg. The results of statistical tests show that there are differences in the abundance of microplastics in the water and sediment in the Buntung River.
Perbandingan Model Decision Tree untuk Prediksi Intensitas Hujan di Juanda, Sidoarjo, Jawa Timur Taufiqi, Rafli Iqbal; Pramuji, Veimas Mahardika; M. Arifudin, M. Arifudin; Saputra, Agung Hari
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art2

Abstract

Rainfall intensity is one of the key parameters in climate dynamics and is strongly associated with the increasing occurrence of hydrometeorological disasters. This study aims to evaluate and compare the performance of three decision tree–based machine learning models in predicting rainfall intensity in the Juanda region, Sidoarjo, East Java. The data used consist of daily weather observations from the Juanda Class I Meteorological Station during the period 2018–2022, covering 13 meteorological variables. The models compared include the Extra Trees Classifier, Random Forest Classifier, and XGBoost Classifier, with performance evaluation based on accuracy, precision, recall, F1 score, and Area Under the Curve (AUC). The results indicate that the Extra Trees Classifier demonstrates the best performance, with an accuracy of 0.8123; precision of 0.8151; recall of 0.8123; AUC of 0.9158; and F1 score of 0.8126. Relative humidity (Rh) was identified as the most influential variable in predicting rainfall intensity across all three models. These findings provide further insights into the relationship between daily weather parameters and rainfall intensity and contribute to the development of more accurate predictive systems as a basis for hydrometeorological disaster mitigation in the study area.
Analisis Sebaran Emisi SO₂ dan NO₂ dari Cerobong Boiler Industri Pengolahan Kelapa Sawit dengan Model AERMOD di PT Perkebunan Nusantara VI Unit Usaha Pinang Tinggi, Kabupaten Muaro Jambi Aprilia, Arifa; Anggraini, Febri Juita; Yasdi, Yasdi
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art6

Abstract

PT Perkebunan Nusantara VI Unit Usaha Pinang Tinggi uses biomass fuel that can produce the main pollutants, SO2 and NO2, dispersed around industry and have the potential to cause air pollution. The study using the AERMOD model aims to determine dispersion of SO2 and NO2 concentrations at receptors, validation of the AERMOD model with RMSPE, contribution of boiler chimney emission to the receptors, and dispersion of actual unmeasured receptor concentration compared to air quality standards. The results showed that the highest and lowest dispersion of SO2 at 1-hour in Kantin Karyawan PKS was 35,85 μg/m3 and Kantor & Gudang was 26,85 μg/m3, while at 24-hours in Halaman Kantor PKS was 25,72 μg/m3 and Perumahan Karyawan PKS (Pondok 5) was 23,99 μg/m3.  The highest and lowest  dispersion of NO2 at 1-hour in Kantin Karyawan PKS was 115,64 μg/m3 and Kantor & Gudang was 38,77 μg/m3, while at 24-hours in Kantin Karyawan PKS was 36,36 μg/m3 and Perumahan Karyawan PKS (Pondok 5) was 24,36 μg/m3. AERMOD model validation for SO2 19,94%<25% (valid) and NO2>25% (invalid). The highest and lowest chimney emission contribution of SO2 at 1-hour in Halaman Kantor PKS was 10,35% and Halaman Toko Bu Sakti was 0%, while at 24-hours in Halaman Kantor PKS was 6,77% and Perumahan Karyawan PKS (Pondok 5) was 0,62%. The highest and lowest contribution of NO2 at 1-hour in Halaman Kantor PKS was 18,46% and Halaman Toko Bu Sakti was 0%, while at 24-hours in Halaman Kantor PKS was 30,12% and Perumahan Karyawan PKS was 0,92%. The actual unmeasured receptors are smaller than the ambient air quality standards.
Uji Efektivitas Resin Penukar Ion Amberlite untuk Penurunan TDS, Angka Permanganat, dan Kadar Warna Air Sungai Bengawan Solo: indonesia Nashira, Alimatun; Anggraeni, Lutvia Yuniar; Muhammad, Nadhev Fadil; Arafahira, Neyza
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art3

Abstract

Despite often being reported as highly polluted, water from the Bengawan Solo River is widely used for irrigation, farming, industry, sanitation, and even as feedstock for drinking water. To ensure the safety and health of the consument, several parameters for water quality, such as COD, TDS, and color, have been set by the Indonesian government. The quality of the water can be upgraded after a series of treatments, one of which is by ion exchange resin. This research aims to study the effectiveness of Amberlite, one of the most commonly available resins, to treat water from the Bengawan Solo River. The initial river water sample taken in Surakarta shows that it did not qualify for sanitation purposes with TDS 2352 mg/L; color 84 TCU; permanganate number 157,6 mg/L; and pH 5,14. Treatment by cation exchange resin Amberlite HPR 1100 Na decreased the permanganate number, TDS, and color up to 21,02%; 34,01%; and 76,19% respectively, while by anion exchange resin Amberlite HPR 4800 Cl the decreases were up to 10,15%; 32,14% and 86,9%. Using cation exchange followed by anion exchange resin improves the effectiveness slightly, the removal rate of permanganate number, TDS, and color was 25,38%; 38,27%; and 92,86%. Each treatment did not change the pH significantly, while the electrical conductivity change was varied. To get the optimum pollutant removal, the resin had to be treated by HCl 1,5 N for cation resin and by NaOH 1,5 N for anion resin. The results show that Amberlite ion exchange resin was effective only for tertiary water treatment, especially for color removal.
Adsorpsi Gas CO Pada Gas Buang Sepeda Motor Menggunakan Biochar dari Cangkang Buah Karet: indonesia -, nur faizah; -, Aryo Sasmita; Elvie Yenie
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art4

Abstract

Biochar is often used as a material to make adsorbents. The largest contributor to air pollution is transportation emissions which have a negative impact on the environment and human health.  Efforts to reduce emissions from transportation, especially motorized vehicles, are using biochar. Biochar is in the form of a solid precipitate which has a large surface area and is obtained from thermal decomposition of biomass without using oxygen or in limited oxygen conditions which contains carbon so it has a high absorption capacity which can be used as an adsorbent. This research aims to analyze the effect of variations in the shape of the adsorbent on the adsorption of CO gas in motorbike exhaust gas using biochar from rubber fruit shells. Biochar was prepared by carbonization process at 5000C for 1 hour using 10% H3PO4 activator and sieving with 100 mesh sieve. The biochar product was then tested using proximate analysis. Proximate analysis results show biochar complies with SNI 06-3730-1995 with a water content value of 5%; ash content 4.2%; volatile matter 4.5%; and fixed carbon 86.3%. The results showed that the highest allowance for CO gas emissions on motorbikes occurred in the first test of 73.768% with a tube shape and a media length of 3 cm. The best adsorption capacity value occurred in the first test with a length of 3 cm biochar media, namely 138.738 mg/g. The results of this study concluded that biochar from rubber fruit shells met quality standards and could be used as an alternative absorbent for gas emissions from motorcycles.
Pemanfaatan Limbah Plastik PS (Polystyrene) Jenis Styrofoam menjadi Paving Block dengan Campuran Silica Fume sebagai Upaya Reduksi Sampah Plastik: indonesia Ardiatma, Dodit; Ilyas, Nur Ilman; Halomoan, Nico; Indriyani, Yuyun Mei
Jurnal Sains dan Teknologi Lingkungan Vol. 17 No. 1 (2025): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol17.iss1.art5

Abstract

As the population increases, the amount of plastic waste, especially styrofoam, is also increasing. Styrofoam waste that is not disposed of and accumulates will have a negative impact on health and the environment. On the other hand, the utilization of styrofoam waste as an additional material for building materials is still very minimal. Therefore, this research aims to overcome environmental problems by utilizing styrofoam waste in making paving blocks as an alternative building material. This research uses a quantitative method to determine the quality of paving blocks produced from a mixture of styrofoam and silica fumes. The research process begins with paving blocks containing 10% styrofoam from the total sand, with variations in particle size that pass the mesh sieve of 1mm, 4mm, and 10mm. Styrofoam acts as a partial replacement for coarse and fine aggregates. In addition, silica fume was added as much as 10% of the total cement to partially replace the adhesive material. The results showed that the addition of styrofoam waste with a diameter of 1mm, 4mm, and 10mm mesh passes in paving blocks produced compressive strength values of 18.00 MPa, 29.17 MPa, and 32.34 MPa, respectively, as well as water absorption values of 6%, 4.9%, and 3.6%. The larger styrofoam shredding diameter (10mm mesh) produced the highest compressive strength value (32.34 MPa) and the lowest water absorption (3.6%), meeting SNI 03-0692-1996 and quality classification B for parking lots. The best composition is the addition of styrofoam by 10% of sand and silica fume by 10% of cement, with 10mm mesh shredding diameter. The styrofoam shredding diameter proved to have a significant effect on increasing the compressive strength and decreasing the water absorption of paving blocks. This research is expected to provide a practical solution in reducing styrofoam waste by using it as a building material, while producing paving block products that meet quality standards.

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