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All Journal Journal of Sustainability Perspectives JURNAL REKAYASA KIMIA & LINGKUNGAN
Karnaji, Karnaji
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Chemical Engineering, Chemistry & Bioengineering Education Energy Engineering Environmental Science

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Carbon Footprint of Universitas Airlangga Before and During the Covid-19 Pandemic Hajjarianti, Permata; Fitriani, Nurina; Zagita, Lauditta Chavia; Ana, Devi; Widyaleksono, Trisnadi; Soegianto, Agoes; Dianbudiyanto, Wahid; Karnaji, Karnaji; Miftahussurur, Muhammad
Journal of Sustainability Perspectives Vol 3, No 3 (2023)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2023.20835

Abstract

This study focus on calculating the carbon footprint from the activities of the Universitas Airlangga. CO2 emission calculations were carried out using the UI GreenMetric method and the Intergovernmental Panel on Climate Change (IPCC) in two periods: before the Covid-19 pandemic and during the Covid-19 pandemic. Activities at Universitas Airlangga that produce carbon footprints are divided into two main sources, first, primary sources that come from direct combustion of fuel into energy, such as burning fuel in motorized vehicles and a secondary source that comes from an indirect source of using electricity in the campus area. The results showed that in the period before the pandemic, the total carbon emissions, based on the IPCC calculation method, were 23.830,34 tons of CO2-eq/year. Meanwhile, based on the UI GreenMetric method, a total carbon emission of 26.325,36 tons of CO2-eq/year was obtained. As for the time period during the pandemic, Universitas Airlangga's total carbon emissions obtained based on the IPCC calculation method were 20.506,69 tons of CO2-eq/year. Meanwhile, based on the UI GreenMetric method, a total carbon emission of 22.321,63 tons of CO2-eq/year was obtained. Secondary carbon footprint mapping is carried out to ascertain the distribution of secondary CO2 emissions produced by Universitas Airlangga. The secondary carbon footprint both before and during the Covid-19 pandemic was mostly generated by the Universitas Airlangga Hospital.
Fotokatalisis Nanopartikel Magnetis Zinc Ferrite dengan Penyinaran Cahaya UV dan Cahaya Tampak Nurhasanah, Iis; Priyono, Priyono; Karnaji, Karnaji; Richardina, Very
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 1 (2018): Jurnal Rekayasa Kimia & Lingkungan (June, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i1.9953

Abstract

Nanopartikel magnetis ZnFe2O4 telah disintesis menggunakan metode presipitasi untuk degradasi rhodamine B dengan penyinaran cahaya UV dan cahaya tampak. Analisis pola difraksi sinar-X dan spektrum Fourier Transform Infrared (FTIR) menunjukkan pembentukan kubik spinel ZnFe2O4 dengan ukuran kristalit sekitar 13 nm. Spektrum absorpsi dalam rentang cahaya UV (200 nm) sampai cahaya tampak (~ 600 nm) dan celah energi 2,04 eV teramati dari pengukuran spektrofotometer UV-Vis. Sifat magnetik nanopartikel diukur menggunakan vibrating sample magnetometer (VSM) menunjukkan sifat magnet lemah yang sesuai untuk aplikasi magnetis fotokatalis. Nanopartikel ZnFe2O4 menunjukkan aktivitas fotokatalisis dengan cahaya UV maupun cahaya tampak untuk degradasi rhodamine B dengan konstanta laju reaksi 8,2 x 10-3 /menit dan 4,5 x 10-3/menit.
Co-Authors Agoes Soegianto Ana, Devi Dianbudiyanto, Wahid Fendy Suhariadi Hajjarianti, Permata Iis Nurhasanah Muhammad Miftahussurur NUrina Fitriani, NUrina Priyono Priyono Subiyantoro, Heru Very Richardina Widyaleksono, Trisnadi Zagita, Lauditta Chavia