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Juita, Febri
Prodi Teknik Lingkungan, Fakultas Sains Dan Teknologi, Universitas Jambi
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Journal : Jurnal Sains dan Teknologi

 1 
Efektivitas Karbon Aktif Dari Batu Bara Muda dalam Menurunkan COD pada Air Limbah Industri Tahu Febri Juita Anggraini; Rara Arsapita; Yasdi Yasdi
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 2 (2023): April 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i2.1822

Abstract

Lignite is the lowest quality coal and cannot be traded in the market. One alternative is that lignite coal has a better use value, lignite coal can be used as a material for making activated carbon. Coal which has become activated carbon can be applied to tofu industrial waste water as an adsorbent in absorbing chemical oxygen demand contained in tofu industrial waste water. The purpose of this study was to determine the characteristics of activated carbon from lignite,opium conditions and isotherm modeling. The method used in the manufacture of activated carbon from lignite is to use an activator in the form of 2 M NaOH with a carbonization temperature of 500°C using variations of 60 minutes and 90 minutes, then the activated carbon is soaked in 2 M HCl solution. Results from carbon characteristics The active lignite coal meets the requirements of SNI 06-3730-1995, the optimum time for reducing COD is 15 minutes with %removal of 66%, the optimum pH for reducing COD is pH 5 with %removal of 63.84% and the isotherm model follows the Harkin isotherm model - Jura with an average relative error of 13.024.
Sebaran Particulate Matter (PM10, PM2,5, PM1, PM0,1) di SMP Negeri 1 Kota Jambi Menggunakan Model CFD (Computational Fluid Dynamics) Febri Juita Anggraini; Annisa Shalsabila; Zuli Rodhiyah
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 4 (2023): Agustus 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i4.2269

Abstract

One source that contributes greatly to urban air quality is traffic. The proximity of schools to vehicles will put students at greater risk of exposure to high concentrations of particulate matter. SMP Negeri 1 Jambi City is an education center located in an urban area and adjacent to a busy road. CFD models are good at modeling the movement of pollutants in urban areas by taking into account the influence of buildings. The purpose of this study is to determine the concentration of PM10, PM2.5, PM1, and PM0.1 at SMPN 1 Jambi City based on direct measurement results and CFD modeling results and then see how accurate the modeled PM concentrations are when compared to the results of direct measurements. The results showed that the average concentrations of PM10, PM2.5, PM1, and PM0.1 from direct measurements were 20.66 µg/m3, 11.79 µg/m3, 8.74 µg/m3, and 1.96 µg/m3, respectively, while the modeling results showed lower average concentrations. The ratio of the difference between the measured and modeled PM concentrations is in the range of 11.67 - 233.45% and with the percentage of RMSPE obtained >30% (invalid), where the requirement for a modeling to be valid so that the results can be trusted in explaining the actual phenomenon is when the validity percentage is <30%.
Co-Authors Annisa Shalsabila Deliana Septiani Dhea Ussarvi Hari Saputra Ilfan, Freddy Maison - Mayra Alviani Murfid Falih Nurul Amalia Putra Fajar Erlangga Rahayu Arman Rara Arsapita Ria Resti Oktapiani Rinaldi Rinaldi Rizki Andre Handika Rizki Andre Handika Rizky Muhamad Ilyas Romi Afrizal Shassy Endah Cahyani Winny Laura Christina Hutagalung Yanova, Shally Yasdi Yasdi Yossi Kristin Anggelina Zuli Rhodiyah Zuli Rodhiyah