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Jurnal Rekayasa Proses
Published by Universitas Gadjah Mada
ISSN : 1978287X     EISSN : 25491490     DOI : -
Core Subject : Education, Social,
Education Social Sciences
Jurnal Rekayasa Proses (J. Rek. Pros) is an open-access journal published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada as scientific journal to accommodate current topics related to chemical and biochemical process exploration and optimization which covers multi scale analysis from micro to macro and full plant size.
Arjuna Subject : -
Articles 234 Documents
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Rethinking administrative documents' validity to cutoff greenhouse gas emissions by million tons Moustafa, Khaled
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.85112

Abstract

Climate change is a multi-hazard challenge for life on earth in all its aspects. Wildfires, pollution, drought and heatwaves are just a few examples of exacerbated environmental crises propelled by climate change effects. To mitigate such effects, urgent actions are required to cutoff greenhouse gas emissions by all the means across all the sectors. Every additional kilogram of greenhouse gases produced unnecessarily should be avoided. One source of greenhouse gas emissions that may not be top of mind for the public and policymakers - and which can be taken into account in preventive environmental policies- is the industry of administrative and identification documents (papers) with short validity dates that involves intensive production (mass printing) and frequent renewals (mass reprinting) while the carbon footprint is too high. The validity of, for example, identity cards, passports, banking cards, driving licenses, etc., is often short ranging from ~ 3 to 10 years, depending on each type of document and issuing country. Short validity dates, however, should raise critical questions regarding the environmental sustainability, societal and carbon impact, and depletion of natural resources used in their production and frequent renewals. Identification documents are not food products that spoil over time or medications that lose their functional activities, so their validity should be unlimited by time in order to avoid the high environmental costs of mass printing/reprinting and high rates of greenhouse gas emissions associated with their production. The production of plasticized ID-type cards can emit up to 100 grams of carbon dioxide equivalent per card. Manufacturing one administrative document per person and renewing it five times could produce up to 4 million tons of carbon dioxide globally. If individuals have five administrative documents that need renewing five times, which is often the case, gas emissions would be five times higher, or approximately 20 million tons of CO2 equivalent. To save such important amounts of gas emissions, a modernization and flexibilization of administrative documents industry is required toward removing validity by date. This simple change could save substantial amounts of energy and natural resources, such as trees and water, while also reducing greenhouse gas emissions by million tons, especially in the pressing context of climate change. It should be time to initiate a paradigm shift in the administrative document industry. Eliminating validity periods is a straightforward yet effective solution that would significantly reduce greenhouse gas emissions and promote sustainable environmental practices.
Carbon composite of NiO hydrothermal impregnation from sugarcane bagasse and its electrochemical properties Nasti, Al Nadine De; Siburian, Kyfti Yolanda; Sembiring, Abraham Danofan; Kristianto, Hans; Susanti, Ratna Frida; Oktaviano, Haryo Satriya; Nugroho, Agung
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.88210

Abstract

Sugarcane bagasse (SB) can synthesize activated carbon (AC) through a two-step calcination process at calcination at 400oC and activation at 800oC. NaOH 0.1 M is used to activate the pre-carbonized sample in the activation step. The AC samples undergo hydrothermal impregnation with nickel oxide (NiO) at 110°C. The X-ray diffraction (XRD) pattern and Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of NiO after this process. Scanning Electron Microscope (SEM) indicates the presence of pore structures in the sample morphology. A three-electrode system with 1 M Na2SO4 as an electrolyte was employed to assess the electrochemical properties. The specific capacitance for activated carbon derived from SB stands at 89.53 F/g at 0.05 A/g current density, while after impregnation with NiO, it increases to 250.53 F/g at the same current density. The results demonstrate the possibility of activated carbon from sugarcane bagasse waste composited with NiO as supercapacitor electrodes.
Jurnal rekayasa proses submission update Petrus, Himawan Tri Bayu Murti
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.92642

Abstract

Pembaruan informasi pengumpulan Jurnal Rekayasa Proses Petrus, Himawan Tri Bayu Murti
Jurnal Rekayasa Proses Vol 17, No 2 (2023)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.92643

Abstract

Page 24 of 24 | Total Record : 234

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