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All Journal Nusantara Science and Technology Proceedings Serambi Engineering
Sholikin, Mohamad
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology

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Organic Waste Treatment Optimization Design Planning Using Simultaneous Composting Technology with EM4 and MOL at Universitas Pembangunan Nasional “Veteran” Jawa Timur Hidayah, Euis Nurul; Novembrianto , Rizka; Rosariawari, Firra; Nisa, Syadzadhiya Qothrunada Zakiyayasin; Sholikin, Mohamad; Rizki, Azizah Mahirah; Rositasari, Putri Redita
Nusantara Science and Technology Proceedings 8th International Seminar of Research Month 2023
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4118

Abstract

Universitas Pembangunan Nasional “Veteran” Jawa Timur is one of the public facilities that produces solid waste, including organic waste, inorganic, and hazardous waste. Waste that can be immediately utilized is organic waste consisting of food waste and leaves and twigs. Therefore, appropriate technology is needed to process organic waste into more useful goods and as a better management alternative through community service. One of the alternatives for processing waste is recycling it into compost using Simultaneous Composting Technology with EM4 and MOL. The main target of this community service is to reduce waste and utilize university waste with appropriate technology for regional coverage and national coverage in the future. The method of this community service is to separate waste between organic and non-organic, selected organic waste is cut by a hammer mill, and then other waste from the canteen activity is made Local Microorganisms (MOLs) as the decaying medium in the composite production of the organic garbage processing device reactor. As a result, this community service has been running smoothly and well. The results of this community service have a positive impact through the use of organic waste into compost which can be utilized by the internal campus and generate economic value.
Assessment of Black Carbon in University: Emphasis on Different Indoor Microenvironment, Infiltration Factor, and Exposure Sholikin, Mohamad; Rosariawari, Firra; Jawwad, Muhammad Abdus Salam
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Black carbon (BC), a harmful air pollutant, poses significant risks to human health. As students spend most of their time indoors and a third in school, the educational environment deserves special attention; however, most previous research has focused on the assessment of the pollutant itself in the classroom. Therefore, this work aims to extend the characterisation of BC in universities by considering different indoor microenvironments, infiltration factors and estimating exposures for healthy children and adults. In this study, BC concentrations were measured in four room types: cafeteria, gym, office room and classroom. The average BC observed in the cafeteria (599 ng m-³), gymnasium (987 ng m-³), office (830 ng m-³) and classroom (548 ng m-³) were. Of these, the gymnasium had the highest mean concentration, consistent with its high indoor/outdoor (I/O) ratio of 1.11, indicating significant indoor sources of BC. Exposure levels correlated directly with BC concentrations, with adults having higher deposition rates compared to children. These results provide insights into the spatial variation of BC in indoor environments, with implications for air quality control and health risk assessment for occupants.
Co-Authors Euis Nurul Hidayah Jawwad, Muhammad Abdus Salam Nisa, Syadzadhiya Qothrunada Zakiyayasin Novembrianto, Rizka Rizki, Azizah Mahirah Rosariawari, Firra Rositasari, Putri Redita