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Wilma Nurrul Adzillah
Program Studi Teknik Lingkungan, Universitas Singaperbangsa Karawang
Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Pemetaan Jejak Karbon pada Sektor Energi dari Aktivitas Permukiman di Kota Bogor, Jawa Barat Iren Chaerunnisa; Wilma Nurrul Adzillah; Azis Kemal Fauzie
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

One of the causes of global warming is the presence of carbon emissions in the atmosphere. Carbon emissions trapped in the atmosphere will cause the Earth's average temperature to rise. Therefore, it is necessary to calculate and map carbon footprints to anticipate the effects of global warming, one of which is in the city of Bogor. The energy sector is the sector that contributes 43.83% compared to other sectors. The calculation of the carbon footprint is based on IPCC formulas. Meanwhile, data collection is carried out through the distribution of questionnaires and direct interviews with the residents of Bogor City in 6 sub-districts. The calculated carbon footprint of the energy sector comes from residential activities, namely the use of fuel for cooking, fuel oil for motor vehicles and electricity used during 1 month. The results of the energy sector carbon footprint in Bogor City were then mapped at different levels using QGIS. The calculation of CO_2 emissions in Bogor City resulted in 2,244,809.6 tons/year and was dominated by North Bogor District as the largest contributor of CO_2 emissions.
Optimalisasi Dosis Sodium Hypochlorite Pada Instalasi Pengolahan Air Perusahaan Umum Daerah di Kota X Wildhan Muhammad Wiediyan; Wilma Nurrul Adzillah; Kania Ratnawati
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The water from Perumda must meet the current drinking water regulatory parameters, namely the Minister of Health Regulation No. 2 of 2023 on Drinking Water Quality Requirements. This research aims to test water parameters including temperature, pH, residual chlorine, E. coli, coliform and determine the optimum dose of disinfectant effort to eliminate E. coli and coliform bacteria in Perumda water in City X. The research method involves data analysis of water characteristic test results and laboratory scale experiments using 7 variations doses of sodium hypochlorite disinfectant ranging from 0.3 to 0.9 ppm. Research results show that temperature parameters can change because they are influenced by room temperature. pH parameter value increases with each additional dose of disinfectant with the highest value being 7.68. The residual chlorine parameter, a dose of 0.6 to 0.8 ppm, produces residual chlorine within the quality standard range, namely 0.2-0.5 mg/L. For E. coli and coliform parameters, a disinfectant dose of 0.6 to 0.9 ppm is able to reduce the E. coli and coliform content to the value of 0/100 mL. The conclusion of the research shows that the optimum dose for the elimination of E. coli and coliform bacteria is a dose of 0.6 ppm because it is able to eliminate bacteria with the lowest chlorine residue, namely 0.22 mg/L.
Optimalisasi Unit Proses Pengolahan Air Minum Pada Perusahaan Umum Daerah M Alif Rifky; Wilma Nurrul Adzillah; Okti Dinasakti Nurul Mentari
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The International Research Centre (IRC) is one of the units in the IPA Poncol branch, which includes coagulation, flocculation, sedimentation, filtration and disinfection units with a capacity of 40 L/sec concrete building. Based on direct observation, the problem in the IRC unit is that the produced effluent is less than optimal, which is 29.4 l/sec, while the designed capacity of the IRC unit is 40 l/sec and does not match the existing process units in the IRC with the applicable design criteria. The cause of the sub-optimal discharge is due to a malfunctioning penstock in the flocculation unit, filter media that has not been replaced for a long time and some valves that have not been maintained. The design criteria that are not met by the IRC unit are the velocity gradient parameter multiplied by the retention time in the coagulation unit, the retention time in the flocculation and sedimentation unit and the backwash time in the filtration unit. The purpose of this study is to provide recommendations for the optimisation of the IRC process unit at Poncol Branch IPA. The method used is to analyse the existing conditions with applicable design criteria. The results of this study are to provide recommendations for the coagulation unit, namely the height of the inlet well to the coagulation basin, changes in the water level in compartment one of the flocculation unit, and changes in the volume of the sedimentation and filtration units.
Co-Authors Azis Kemal Fauzie Iren Chaerunnisa Kania Ratnawati M Alif Rifky Okti Dinasakti Nurul Mentari Wildhan Muhammad Wiediyan