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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Riksa Cendikia Nusantara
Zafira, Nesa
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Proses Pengembangbiakan Bakteri Kultur Tercampur Untuk Pengolahan Limbah Cair Produksi Minyak Sawit Zafira, Nesa; Andrio, David; Veronika, Nina
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Palm Oil Mill Effluent (POME) has total COD concentration 35.000 mg/L. In terms to treat the high strength organic wastewater, sludge from POME treatment plant which contained mixed cultures bacteria can be used as inoculum. This process was called seeding that has function to increase growth phase of the bacterial biomass by using glucose technical grade as substrate for bacteria to consumed. This study was conducted in Circulating Bed Reactor (CBR) as batch reactor with working volume of 25L, ratio of glucose : inoculum = 50% : 50%. This research aimed to study the effect of the glucose degradation in order to increase the bacterial biomass. This process was done in five days with removal rate of soluble COD and growth rate of VSS that has amount of 2.278 mg/L/day and 1.116 mg/L/day, respectively. Meanwhile the removal efficiency of soluble COD was 28,57% and growth efficiency of VSS was 67,4%. Keywords: Palm oil mill effluent, Circulating bed reactor, Seeding process, Mixed cultures bacteria, glucose, soluble COD, VSS
Artikel Review: Efektivitas Mikroorganisme untuk Pengomposan Tandan Kosong Sawit secara Berkelanjutan Legawati, Lisa; Maarasyid, Cici; Meldha, Zuqni; Liska, Salma; Yolanda, Yogi; Hendri, Yola Bertilsya; Ermal, Dini Aulia Sari; Elsa, Nesa Zafira
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 3 (2025): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i3.47603

Abstract

Empty Fruit Bunches (EFB) of oil palm are the main solid waste generated by the palm oil industry, with an increasing volume and high lignocellulosic content that can affect the decomposition process. This article aims to review the effectiveness of various microorganisms as bioactivators in EFB composting based on experimental studies and recent literature. The review results indicate that using microbial consortia such as Trichoderma spp., cellulolytic bacteria, and local microorganisms (MOL) is more effective than single microorganisms in reducing the C/N ratio to levels approaching the compost quality standard (<20). Aerobic composting methods with proper aeration management and the addition of organic materials can also accelerate decomposition. Further research is recommended to examine the interactions among microorganisms within the consortia and to conduct application trials to validate the agronomic benefits of EFB compost sustainably. 
Evaluasi Sistem Perpipaan Distribusi Air Bersih PDAM Tirtamalem Unit Kabanjahe Berbasis Simulasi EPANET 2.0 Rahayu, Silda Adi; Indrawan, Ivan; Sitepu, Yudithia Banta Karunia; Zafira, Nesa; Kurniati, Roselyn Indah
Jurnal Riksa Cendikia Nusantara Vol. 2 No. 5 (2026): Riksa Cendikia Nusantara - Mei 2026
Publisher : Jurnal Riksa Cendikia Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.20250832

Abstract

PDAM Tirta Malem was established to fulfill the community’s clean water needs in Kabanjahe District through the provision of high-quality and sustainable water distribution services. The water source utilized to meet the water demand in Kabanjahe District is the Lau Bengap Spring, which has a production discharge of 50 liters/second. The problems occurring within the distribution piping system include the significant elevation difference between the reservoir and the service area, as well as the pipeline network passing through community plantations, which may lead to pipe leakage.This study aims to evaluate the clean water distribution piping system of PDAM Tirta Malem, Kabanjahe Unit, using the EPANET 2.0 software. The results indicate that the system experiences water losses of 37% and negative pressure in the pipelines reaching up to −4.16 m, causing water to be inadequately distributed to the community. To overcome these problems, the installation of a booster pump with a head of 60 m is required. In addition, replacing the 200 mm diameter distribution pipe with a 250 mm diameter pipe can also be considered as an alternative solution.
Co-Authors Cici Maarasyid David Andrio Dini Aulia Sari Ermal Hendri, Yola Bertilsya Ivan Indrawan, Ivan Lisa Legawati Rahayu, Silda Adi Roselyn Indah Kurniati, Roselyn Indah Salma Liska Sitepu, Yudithia Banta Karunia Yolanda, Yogi Zuqni Meldha