Article Per Year (5 Year)
p-Index From 2021 - 2026
3.2
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Usia Dini Jurnal Sains dan Teknologi Jurnal Teknologi Pendidikan JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Jurnal IPTEK PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) JMM (Jurnal Masyarakat Mandiri) Journal of Education and Instruction (JOEAI) International Journal of Community Service Learning Journal of Engineering and Scientific Research (JESR) Jurnal Sistem Teknik Industri Jurnal Riset Teknologi Pencegahan Pencemaran Industri International Journal of Tourism and Hospitality in Asia Pasific Serambi Engineering
Yosef Barita Sar Manik
Environmental Engineering Study Program, President University, Cikarang, Indonesia
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
Life Cycle Assessment a Coal Mining in East Kalimantan Diharjo, Deniela Flora Mariyne Wongso; Manik, Yosef Barita Sar
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 3 (2023): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i3.68103

Abstract

A Life Cycle Assessment study aimed at identifying the environmental impacts of a coal mining process has been carried out. The scope of the process includes land clearing to coal barging (cradle to gate). The functional unit used is the production of 1 ton of coal. The inventory data in this research is site specific, collected from a mining company located in East Kalimantan during the period September 2022 to June 2023. Impact analysis was characterized using the ReCiPe 2016 midpoint (H) method with the help of OpenLCA v.2.0.2 software. From the impact analysis, it was found that the coal mining operations studied have the potential to produce Fine Particulate Matter Formation (0.122 kg PM2.5eq), Global Warming (73.28 kg CO2eq), Terrestrial Acidification (0.4114 kg SO2eq), Ozone formation-human health and Ozone formation-terrestrial ecosystems (0.54 kg NOx eq), Land Use (4.42×10-4 m2a crop eq), and Water consumption (11.44 m3). The potential for Particulate Matter Formation and Global Warming is generally related to the process of moving materials and water consumption caused by the process of transporting coal. From this research, it was found that the overburden stripping process is an environmental hotspot for the coal mining process because it has the greatest potential impact of all existing processes.
Effect of NaCl Activator Concentration on Iodine Adsorption of PET- based Activated Carbon Agus, Fadilatur Rahmi; Yosef Barita Sar Manik
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 2 (2024): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i2.81448

Abstract

This study examines the use of NaCl as an activator in the production of activated carbon from Polyethylene terephthalate (PET) waste to overcome environmental problems due to the accumulation of plastic waste that is difficult to decompose. This study aims to examine the effect of NaCl concentration on the iodine adsorption capacity of activated carbon. This type of research is experimental research. The samples used were 15 samples of activated carbon. Data collection methods through laboratory experiments. Data analysis was performed by simple linear regression analysis. The results of the analysis showed that variations in NaCl concentration had a significant effect on iodine adsorption capacity, with an R² value of 0.868 indicating 86.8% of variations in adsorption capacity could be explained by NaCl concentration. A concentration of 1M was considered optimal in balancing effectiveness, production cost, and environmental impact, although higher concentrations resulted in better adsorption capacity. This study concludes that the utilization of PET waste for activated carbon production provides a sustainable solution to plastic pollution, reduces waste while producing high-value products for industrial applications, and contributes to the development of more environmentally friendly and economical activated carbon production methods.
Determination of Critical Indoor Air Quality Parameters in Environmental Chemistry Laboratory of President University Gabryella Lovia Sihombing; Yosef Barita Sar Manik
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Environmental Engineering Laboratory at President University is obliged to systematically identify and manage Environmental Health and Safety (EHS) aspects to comply with LAM Engineering Regulation No. 1 of 2025, which mandates Higher Education Institutions in Engineering to ensure the provision of appropriate laboratory infrastructure and continuous monitoring of EHS conditions within their facilities. Through a systematic identification process that aligns activities and working conditions with relevant regulations, 9 critical parameters have been established, including temperature, humidity, CO2, PM2.5, PM10, lighting, noise, airflow, and Total Suspended Particles (TSP). These findings were obtained based on the identification of potential pollution risks based on laboratory experiments based on study program modules, measurements of dimensions and equipment as well as indoor air circulation conditions and literature review on indoor air quality study and regulation. The results of the critical parameter determination provide a comprehensive picture of critical indoor air quality parameters in laboratories, thus forming the basis for the development of an appropriate EHS management system at President University laboratories. Based on these research results, it is recommended to regularly monitoring indoor air quality with monitoring device, move the furnace as source of particulates, and maintaining humidity by installing a dehumidifier to ensure a healthy and standard-compliant learning environment.
Co-Authors Agus, Fadilatur Rahmi Anita Febriany Lumbangaol Anthony Halog Aulia Rizqi Aufa Rafiqi Benedikta Anna Haulian Siboro Bintang Rachel Aprilia Marpaung Brilian Maulani Putri Christine Nababan Daniel Simanjuntak Diharjo, Deniela Flora Mariyne Wongso Dinda Fairuz Nadhifah El Isma Naomi Thorndike Sihombing Elisabeth Pardede Ellen Siagian Elserida Nababan Elvhan Chatisla Cosaken Farhan Saefurrahman Felix Arnes Sitorus Fitri Butarbutar Gabryella Lovia Sihombing Halog, Anthony Huri, Khalila Kireina Indah Debora Salmanita Simanjuntak Indri Purba Inna Stephanie Jayawarsa, A.A. Ketut Jesica Pratiwi Simanjuntak Joshua Partogi Hutauruk Karen Tiara Karlina Gultom Keisha Fawwaaz Lubis, Windy Mairuhu, Daffa Renaldhi Chaniago Marpaung, Bintang Rachel Aprilia Maulidinnisa, Vira Puspita Mayriza, Azka Leona Metiovani Julianti Monalisa Martha Siahaan Nababan, Christine Nababan, Elserida Natalia Paramitha Natasya Pangaribuan Nati Nati, Nati Ni Made Amanda Putri Paramerta Oky Rahayu Pangaribuan, Natasya Paramitha, Natalia Putri, Brilian Maulani Rut Tambun Salsana, Bella Santi Agustina Manalu Santi Panjaitan Saraswati Sintia Widi Sede, Johanes Surya Utama Siagian, Ellen Siboro, Benedikta AH Sikstin Sihombing Simanjuntak, Donda Natalia R. Simanjuntak, Jesica Pratiwi Simbolon, Vismeike Septauli Simorangkir , Desi Sinaga, Hotma Sintong Joshua Siahaan Siswohartono, Aisyah Bestari Situmorang, Eva Daoni Veronika Sri Hanna Siahaan Susi Limbong Tambunan, Yohana Tampubolon, Grace Manzoya Vismeike Septauli Simbolon Windy Lubis Yohana Tambunan