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Zeffitni Zeffitni
Jurusan Teknik Sipil Universitas Tadulako, Palu
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Delineation of Groundwater Density Zones Using Multi-Criteria Analysis in Ngatabaru Village Area, Palu City Indra Wahyudi Betalino; Zeffitni; Nunik Rezkiarti Janat
Tadulako Science and Technology Journal Vol. 1 No. 2 (2021): Tadulako Science and Technology Journal
Publisher : LPPM Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/sciencetech.v1i2.17296

Abstract

Introduction: This research discusses the availability of groundwater in the Ngatabaru Village area. The use of groundwater, which tends to be more intensive and is not in accordance with its availability and utilization zone, ultimately has an impact on the local environment. Method: This study used the overlay method to determine the groundwater conditions in the study area. This method uses 7 parameters to determine the groundwater zone, namely lithology, hydrogeology, land cover, rainfall, slope, drainage density, and lineament density. Results and Discussion: This map produces 5 groundwater occurrence zones which show that 34.32% of the study site is an area with very low groundwater occurrence, then 37.19% is an area with low groundwater occurrence, 9.08% is an area with moderate groundwater occurrence, 12.91% is an area with high groundwater occurrence and 6.5% is an area with very high groundwater occurrence. Conclusion: Based on the analysis, Kelurahan Ngatabaru has low annual rainfall, ranging from 0 to 800 mm. The slope is steep in the east and slopes to the west, with forest land cover in the east and scrub and settlements in the west. Geologically, the area consists of schist, granite, and conglomerate lithologies, and has aquifers with high, low, and little productivity.
Penentuan Kelas Massa Batuan Menggunakan Metode Rock Mass Rating pada Lereng di Kecamatan Walenrang, Kabupaten Luwu, Sulawesi Selatan Saputra, Apriadi; Zeffitni, Zeffitni; Arum, Deno Ambar; Uno, Djamal Adi Nugroho; Mumin, Risqa Permatasyara
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v2i4.35317

Abstract

This study aims to analyze slope stability in Walenrang District, Luwu Regency, South Sulawesi, using the Rock Mass Rating (RMR) method. The research area lies along the Walenrang–Toraja main route, which is composed of volcanic and sedimentary rocks affected by an intensive joint system. Field investigations were conducted using the scanline method to obtain geotechnical parameters such as unconfined compressive strength (UCS), Rock Quality Designation (RQD), discontinuity spacing and condition, and groundwater condition. Based on Schmidt Hammer test results, the rock’s compressive strength was 64 MPa with an RQD value of 97%, indicating excellent rock quality. The weighting of six key parameters produced an RMR value of 69, classifying the rock mass as Class II (good rock). This finding indicates that the slopes at the research location are still in good condition.
Kajian Kinerja Pengelolaan Air Limbah Untuk Sanitasi Aman di Lembaga Pendidikan Keagamaan Kota Palu Halidiyah Faradillah; Zeffitni; Setiyawan; Ummu Aiman; Fikky Zachri
Paulus Civil Engineering Journal Vol. 7 No. 4 (2025): Paulus Civil Engineering Journal, Vol.7, No.4
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/je0p2j24

Abstract

Pengelolaan air limbah di lembaga pendidikan keagamaan berperan krusial dalam memastikan tercapainya standar sanitasi aman. Penelitian ini mengevaluasi kinerja sistem pengolahan air limbah pada tujuh pondok pesantren di Kota Palu melalui kombinasi pendekatan kuisioner kepada santri dan pengurus, inspeksi lapangan terhadap infrastruktur sanitasi, serta analisis laboratorium terhadap kualitas efluen. Data persepsi diolah menggunakan skala Likert dan dianalisis secara deskriptif dengan bantuan SPSS. Hasil pengujian laboratorium menunjukkan bahwa seluruh parameter kualitas efluen—termasuk TSS, BOD, COD, pH, minyak dan lemak, serta amoniak—berada dalam rentang baku mutu yang dipersyaratkan Permen LHK No. P.68/2016, mengindikasikan bahwa IPAL beroperasi secara efektif. Temuan observasi mengungkap bahwa sebagian besar pesantren memiliki kinerja pengelolaan yang baik hingga sangat baik; namun sejumlah aspek seperti pemeliharaan fasilitas, kecukupan jumlah WC, dan pencatatan operasi IPAL masih menunjukkan celah yang perlu diperbaiki. Analisis kuisioner menunjukkan perilaku hidup bersih dan sehat di kalangan santri berada pada kategori baik, meskipun tingkat konsistensinya masih bervariasi. Penelitian ini menekankan perlunya penambahan fasilitas sanitasi sesuai rasio santri, peningkatan kapasitas atau modifikasi IPAL untuk mengantisipasi pertumbuhan populasi, serta penguatan mekanisme operasi dan pemeliharaan melalui pencatatan rutin. Dukungan monitoring dari instansi terkait menjadi faktor penting untuk menjamin keberlanjutan pengelolaan air limbah di lingkungan pendidikan keagamaan.
Pengaruh Massa Adsorben Arang Aktif Sekam Padi dan Ampas Kopi dalam Mereduksi Zat Pencemar Limbah Cair Indrustri Tempe Rumahan Zulhija, Sari; Alricha, Alricha; Amaludin, Moh Baitullah; Zeffitni, Zeffitni; Ramadani, Sriyati
Jurnal Teknologi Berkelanjutan Vol 14 No 02 (2025): Vol 14 No. 02
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtb.v14i02.347

Abstract

The home-based tempeh industry faces serious challenges in managing liquid waste containing pollutants such as Total Suspended Solid (TSS), ammonia, turbidity, and pH that exceed quality standards. This study aims to determine the decrease in pollutant levels in tempeh industry liquid waste with a combination of coffee grounds and rice husk adsorbents, and to determine the effect of giving variations in adsorbent mass on the value of pollutant parameters in tempeh industry liquid waste. The method used was quantitative experimental with waste samples from Monas Tempe Factory. The adsorbent mass variations tested were 1:1, 1:2, and 2:1, with a total dose of 8 grams per 500 ml of waste, and the adsorption process was carried out with magnetic stirring for 30 minutes at 300 rpm. The results showed that the adsorbent combination was effective in reducing TSS and ammonia, with the highest TSS reduction reaching 53.42% and ammonia 67.33% in the 1:2 variation. The maximum adsorption capacity for TSS was 4330 mg/g and for ammonia 127.50 mg/g. However, this treatment also caused an increase in turbidity (-19937.50%) and pH (-16.88%). The Freundlich isotherm model is more suitable to explain the adsorption process, indicating that adsorption is favorable and occurs physically with multilayer. Although this combination was effective in reducing TSS and ammonia, there were limitations in dealing with turbidity and pH.
Co-Authors Alricha, Alricha Amaludin, Moh Baitullah Apriadi Saputra Aris, Ayub Pratama Arum, Deno Ambar Djamal Adi Nugroho Uno Djeba, Wahyuni Fikky Zachri Halidiyah Faradillah Ika Listiqowati Indra Wahyudi Betalino Irianto Uno Kiki Listianti, Ajeng Mumin, Risqa Permatasyara Ninasafitri, Ninasafitri Nunik Rezkiarti Janat Ramadani, Sriyati Rifai Setiyawan Ummu Aiman Yayu Indriati Arifin Zulhija, Sari