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All Journal Reaktor COVIT KOLONI Jurnal Ilmiah Teknik dan Sains (JITS)
Harun Pampang
Politeknik Negeri Ujung Pandang
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Pemanfaatan Ekstrak Belimbing Wuluh (Avverhoa bilimbi L.) Menjadi Sabun Cuci Piring Zakiyah Darajat; Dian Ranggina; Harun Pampang; Afriyanti S. Lamuru; Muhammad Arham Yunus; Maria Assumpta Nogo Ole; Nurfiansyah Nurfiansyah
COVIT (Community Service of Tambusai) Vol. 2 No. 2 (2022): SEPTEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/covit.v2i2.18389

Abstract

Wuluh star fruit is a plant that is rich in benefits. The population of this plant is very abundant in the community both in the yard or as a shade plant in the yard. The population of this plant is not proportional to its utilization so that the star fruit usually falls and rots. Seeing this, a community service activity was carried out regarding the use of starfruit into dish soap, which besides being able to add to the economic value of starfruit, can also reduce environmental pollution. Wuluh star fruit (Averrhoa bilimbi L.) contains saponins, flavonoids, acetic acid, and vitamin C. Saponins have the ability to kill bacteria while flavonoids can destroy bacterial proteins by lysis method so that bacteria cannot reproduce and die. Saponins also function as a foam producer so that they can be used in the manufacture of dish soap. Keywords: Wuluh star fruit, saponin, dish soap
Efektivitas Penggunaan Poli Aluminium Klorida (PAC) dan Aluminium Sulfat (Tawas) Dalam Pengolahan Limbah Cair Industri pada Waste Water Treatment Plant (WWTP) PT. KIMA Makassar dengan Metode Koagulasi Menggunakan Jar Test Harun Pampang; Maria Assumpta Nogo Ole; Zakiyah Darajat
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.280

Abstract

Wastewater in industrial areas has various contents. The levels of pollutant substances in waste water have been regulated in industrial area waste water quality standards stipulated in Government Regulations. One method used to achieve quality standards is a chemical process, namely adding chemicals as coagulants using a jar-test machine. In this study, the coagulation process of liquid waste from PT. Makassar Industrial Area with the addition of polyaluminium chloride (PAC) and aluminum sulfate (alum) which aims to study the effectiveness of using two types of coagulants with variations of 0.02, 0.04, 0.06, and 0.08 grams in 500mL of wastewater. After 1 minute fast stirring and 10 minutes slow stirring then leaving for 10 minutes, the TSS test showed that the addition of alum was able to reduce TSS better than the addition of PAC. The addition of 0.04 grams of alum resulted in an effectiveness of 91.71%, while for PAC the best results were the addition of 0.06 grams of coagulant with an effectiveness of 46.13%. Keywords: coagulation, jar-test, alum, PAC, wastewater treatment
Comparative Kinetic Modelling and Performance Evaluation Of Immobilized Media Using Zeolite and Biokeramic In an Anaerobic Fixed-Bed Reactor Treating Dairy Sludge Waste Harun Pampang; Maria Assumpta Nogo Ole; Dian Ranggina; Prisca Caesa Moneteringtyas
Reaktor Volume 26 No.1 April 2026
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.82403

Abstract

This study evaluates the performance of anaerobic fixed-bed reactors using two different immobilization media, natural zeolite and porous bioceramic, for treating dairy sludge waste. Kinetic modeling was performed using Monod, Contois, and Moser models, implemented by MATLAB to determine substrate degradation (sCOD) and methane production rates. The results indicated that for the zeolite media, the Moser model provided the best fit R2 of 0.9287 and RMSE of 500.12 mg/L with an exponential constant (n) of 2.92, reflecting high microbial sensitivity and synergistic effects in the biofilm. In contrast, the bioceramic media showed higher statistical stability across all models, with the Monod and Moser models achieving an identical R2 of 0.9939. However, a significant functional discrepancy was observed, while bioceramic provided superior statistical fitting, it failed to facilitate effective methanogenesis, with methane concentrations remaining below 10%. Zeolite, despite a slightly lower statistical fit, achieved a peak methane concentration of 37.82% on day 6. This suggests that zeolite's cation exchange capacity effectively mitigates ammonia inhibition from protein-rich dairy sludge, a factor not captured by simplified empirical deterministic kinetic models. This research emphasizes that statistical stability in kinetic modeling did not inherently correlate with bio-energy recovery efficiency, affrim the importance of media selection.
Evaluasi Kinetika dan Termodinamika Penghilangan Lignin dari Jerami Padi Menggunakan Nades Harun Pampang; Dian Ranggina; Maria Assumpta Nogo Ole
Jurnal Ilmiah Teknik dan Sains (JITS) Vol. 3 No. 3 (2026): April : Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v3i3.116

Abstract

Penelitian ini bertujuan untuk mengevaluasi aspek kinetika dan termodinamika pada proses delignifikasi jerami padi menggunakan metode simultan pemanasan hidrotermal dan sonikasi dengan bantuan Natural Deep Eutectic Solvent (NADES). Dua jenis pelarut berbasis Choline Chloride (ChCl) dengan Hydrogen Bond Donor (HBD) berupa gliserol dan asam laktat digunakan untuk mendegradasi struktur lignoselulosa pada variasi suhu 30, 55, dan 80 °C selama 40 menit. Analisis kinetika menunjukkan bahwa proses delignifikasi mengikuti model kinetika orde satu semu (pseudo first order), dengan konstanta laju reaksi (k) tertinggi dicapai oleh pelarut ChCl:Asam Laktat. Nilai energi aktivasi (Ea) yang diperoleh untuk ChCl:Gliserol dan ChCl:Asam Laktat masing-masing sebesar 8,96 kJ/mol dan 4,05 kJ/mol. Nilai Ea ​yang berada di bawah 40 kJ/mol mengonfirmasi bahwa mekanisme delignifikasi dikendalikan oleh fenomena transfer massa (difusi) pelarut ke dalam matriks biomassa. Analisis termodinamika mengungkapkan bahwa proses bersifat non-spontan (ΔGo > 0) dan endotermik (ΔHo > 0), di mana kenaikan suhu secara efektif menurunkan hambatan energi bebas Gibbs. Nilai entropi (ΔSo) yang positif menunjukkan peningkatan ketidakteraturan sistem sebagai gaya dorong utama fragmentasi lignin. Secara keseluruhan, ChCl:Asam Laktat menunjukkan efisiensi yang lebih tinggi dibandingkan ChCl:Gliserol berdasarkan barier energi kinetika dan termodinamika yang lebih rendah, sehingga berpotensi untuk diaplikasikan pada kondisi operasional yang lebih moderat.
Co-Authors Afriyanti S. Lamuru Dian Ranggina Maria Assumpta Nogo Ole Nurfiansyah Nurfiansyah Prisca Caesa Moneteringtyas Yunus, Muhammad Arham Zakiyah Darajat