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Analisis Kualitas Udara di Ruang Parkir Bawah Tanah dan Pengaruhnya Terhadap Pengguna Kristanto, Gabriel Andari; Sumabrata, Jachrizal; Astuti, Siti Kurnia
Jurnal Sains Dan Teknologi Lingkungan Vol 5, No 2 (2013): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Semakin mahal dan terbatasnya lahan di perkotaan membuat pihak pengembang gedung banyak membangun berbagai fasilitas di bawah tanah, termasuk diantaranya adalah fasilitas parkir. Sayangnya keadaan ini seringkali mendorong perancang lebih memperhatikan kekuatan atau keindahan gedung dan ruangan dibandingkan faktor-faktor lain seperti kesehatan, sirkulasi udara, dan pencahayaan. Kondisi ruangan yang lebih tertutup dan lalu lintas sekitar yang seringkali macet, menyebabkan kualitas udara dalam ruang parkir bawah tanah menurun akibat pencemar udara terkonsentrasi hingga mencapai level membahayakan. Penelitian ini bertujuan mengukur kualitas udara di ruang parkir bawah tanah di Mall X di Jakarta dengan parameter CO, NO, dan total jamur dan bakteri dengan waktu pengukuran dilakukan pada hari kerja dan akhir pekan. Tingkat resiko kesehatan diukur dengan menggunakan kuesioner dengan klasifikasi responden berdasarkan lama waktu paparan dan maksud atau fungsi keberadaan responden tersebut di mall. Hasil pengamatan konsentrasi CO dalam parkir bawah tanah melebihi baku mutu yang dikeluarkan oleh Peraturan Gubernur DKI Jakarta No. 56/2006. Tidak terdapat baku mutu dalam ruangan untuk NO, tetapi tingginya kadar NO di ruang parkir bawah tanah memungkinkan pembentukan NO 2 melalui proses oksidasi di udara ambient dan menaikan konsentrasi NO 2 yang diemisikan secara lansung oleh kendaraan bermotor. Pertumbuhan jamur dan bakteri di dalam parkir bawah tanah dimungkinkan akibat kelembaban tinggi dan suhu yang hangat serta pemeliharaan gedung yang kurang. Kata kunci : pencemaran udara dalam ruangan, parkir bawah tanah, travel time, resiko kesehatan

Pengaruh Perubahan Parameter Fisik-Kimia terhadap Aktivitas Mikroorganisme selama Proses Pengomposan Sampah Organik Kantin Banaget, Cut Keumala; Kristanto, Gabriel S. Boedi Andari; Danumihardja, Irma Gusniani
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.87

Pengolahan sampah sisa makanan perlu menjadi prioritas karena jumlahnya yang besar serta sifatnya yang mudah membusuk dan memicu kehadiran hewan pembawa penyakit seperti tikus.Salah satu teknik pengolahannya adalah pengomposan, yaitu proses degradasi sampah organik oleh mikroorganisme menjadi material sejenis humus yang dapat dimanfaatkan. Tujuan penelitian ini adalah untuk menganalisis faktor-faktor (meliputi parameter fisik-kimia) yang mempengaruhi proses pengomposan, serta menganalisis hubungan dan pengaruh faktor tersebut terhadap aktivitas mikroorganisme selama proses pengomposan berlangsung. Analisis statistik dalam penelitian ini meliputi analisis faktor, korelasi, dan multivariabel. Berdasarkan analisis faktor yang dilakukan,terbentuk 2 faktor baru yang mempengaruhi proses pengomposan, yaitu faktor 1 dinamakan parameter yang menunjukkan hasil dari proses pengomposan, terdiri dari konduktivitas, salinitas, dan kadar air; dan faktor 2 dinamakan parameter yang mendukung proses pengomposan, terdiri dari rasio C/N, kadar karbon, pH, dan kadar nitrogen. Hasil analisis korelasi menunjukkan kadar air, rasio C/N, kadar karbon, pH, kadar nitrogen memiliki pengaruh terhadap aktivitas mikroorganisme. Berdasarkan analisis multivariabel, komposter 2 diperkirakan memiliki model regresi pengaruh faktor pengomposan terhadap aktivitas mikroorganisme yang terbaik. Sedangkan dilihat dari penurunan kadar karbonnya, komposter 1 memiliki konstanta laju pengomposan dan laju dekomposisiterbesar dibandingkan dua komposter lainnya, yaitu sebesar 0,0006 dan 0,0224%/hari.

A Study of Compost as an Adsorbent for Congo Red Dye Removal Process Gabriel Andari Kristanto; Ariessyawtra Raindra Lamurvie; William Koven
Reaktor Volume 17 No. 4 Desember 2017
Publisher : Dept. of Chemical Engineering, Diponegoro University

The human population continues to grow annually, and so does the number of textile industries. In textile industry, synthetic dye is one of the most polluting substance in its wastewate which the conventional treatment processes are usually ineffective. Another option is using activated carbon to remove the dye, but carbon is an expensive material. It is is interesting that material that is rich in carbon, such as compost, may become an alternative solution. The objective of the present study was to assess the capability of compost in treating wastewater dye by determining the optimum compost dosage, particle size, and column height, while considering dye percentage removal and adsoprtion capacity. The optimum compost dosage was 8g/L and the optimum particle size was 1–2 mm in treating the 200 ppm Congo Red dye molecule, resulting in 20.49% removal and a 5.33 mg/g adsorption capacity. The optimum compost column height was 60 cm with 90% removal, and the adsorption capacity was 0.38 mg/g. The dye molecule wore off tthe compost, therefore fresh compost must be introduced in order to maintain its percentage removal level. The compatibility of isotherm model developed in this study with the Freundlich model is similar with previous studies. Keywords: compost; congo red dye;adsorbent, batch, column

ANALISA PEMANFAATAN KOMPOS SEBAGAI MEDIA BIOCOVER DI TEMPAT PEMROSESAN AKHIR SAMPAH: Studi Kasus Kota Depok, Jawa Barat Gabriel Andari Kristanto; Dwi Rahayu; Evy Novita
Reaktor Volume 15, No.2, OKTOBER 2014
Publisher : Dept. of Chemical Engineering, Diponegoro University

High percentage of organic waste in urban areas makes composting as good alternative in waste processing. However, composting has not been effectively used and the result is not optimal. Previous studies found compost can be used as biocover media to reduce methane emission landfill. The objective of the study is to identify the characteristic of produced at temporary waste unit Depok, West Java and the effect of compaction toward the amount of methane removal in the landfill. Before applied as biocover media, compost was characterized followed by maturation process. Study on methane removal efficiency was conducted as batches in four reactors for 35 days with compaction rate varying from 750, 800, 850 dan 900 kg/m3. Composting media used in the research had 80 cm thickness with artificial gas consisting of 50% CH4 dan 50% CO2. Initially, compost did not meet criteria as mature compost based on SNI 19-7030-2004, and as media biocover hence a pre-treatment was needed to improve the quality compost to meet the requirements. Compaction rate of 900 kg/m3has highest elimination capacity of methane i.e. 98,31%±3,6% and 13,98±4,32 g/m3/hour.

Assessment of Compost Maturity using The Static Respirometry Index Gabriel Andari Kristanto; Syifa Aulia Rahmah
Reaktor Volume 18 No. 4 December 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

To be used as organic fertilizer, compost must be stable and mature enough to ensure that it is safe for agricultural application. The stability and maturity of compost can be viewed from physical, chemical, and biological parameters. One of the biological parameters is the static respiration index (SRI). In many places, the SRI is applied as a representative indicator of the stability and maturity of compost but not in Indonesia compost standard of the SNI 19-7030-2004. This study aims to assess the index of the static respiration of composts and analyze their stability and maturity. The assessment was carried out on 10 compost samples sold in Jakarta and Depok. It is observed that 8 of 10 tested composts was stable and mature, with a static respiration index of 0.61–1.35 mg O2 g-1 VS h-1. One of the 10 composts was very stable and very mature, with a static respiration index of 0.46 mg O2 g-1 VS h-1 and 1 compost was unstable and immature, with an index of 1.79 mg O2 g-1 VS h-1. The results indicated that re-composted for seven days was adequate to make the compost more stable and mature than the initial state. Since maturity is not described by a single property, it is great assurance for the compost producer and end user in Indonesia that not only physical and chemical characteristics are used as indicator for compost stability and maturity but also biological indicator such as SRI. Keywords: compost; maturity; stability; static respiration index

Analisis Kualitas Udara di Ruang Parkir Bawah Tanah dan Pengaruhnya Terhadap Pengguna Gabriel Andari Kristanto; Jachrizal Sumabrata; Siti Kurnia Astuti
Jurnal Sains & Teknologi Lingkungan Vol. 5 No. 2 (2013): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol5.iss2.art5

Semakin mahal dan terbatasnya lahan di perkotaan membuat pihak pengembang gedung banyak membangun berbagai fasilitas di bawah tanah, termasuk diantaranya adalah fasilitas parkir. Sayangnya keadaan ini seringkali mendorong perancang lebih memperhatikan kekuatan atau keindahan gedung dan ruangan dibandingkan faktor-faktor lain seperti kesehatan, sirkulasi udara, dan pencahayaan. Kondisi ruangan yang lebih tertutup dan lalu lintas sekitar yang seringkali macet, menyebabkan kualitas udara dalam ruang parkir bawah tanah menurun akibat pencemar udara terkonsentrasi hingga mencapai level membahayakan. Penelitian ini bertujuan mengukur kualitas udara di ruang parkir bawah tanah di Mall X di Jakarta dengan parameter CO, NO, dan total jamur dan bakteri dengan waktu pengukuran dilakukan pada hari kerja dan akhir pekan. Tingkat resiko kesehatan diukur dengan menggunakan kuesioner dengan klasifikasi responden berdasarkan lama waktu paparan dan maksud atau fungsi keberadaan responden tersebut di mall. Hasil pengamatan konsentrasi CO dalam parkir bawah tanah melebihi baku mutu yang dikeluarkan oleh Peraturan Gubernur DKI Jakarta No. 56/2006. Tidak terdapat baku mutu dalam ruangan untuk NO, tetapi tingginya kadar NO di ruang parkir bawah tanah memungkinkan pembentukan NO 2 melalui proses oksidasi di udara ambient dan menaikan konsentrasi NO 2 yang diemisikan secara lansung oleh kendaraan bermotor. Pertumbuhan jamur dan bakteri di dalam parkir bawah tanah dimungkinkan akibat kelembaban tinggi dan suhu yang hangat serta pemeliharaan gedung yang kurang. Kata kunci : pencemaran udara dalam ruangan, parkir bawah tanah, travel time, resiko kesehatan.

Carbon Footprint Analysis Of Environmental Management In Slum Areas Of Depok City Della, Sevia; Kristanto, Gabriel Andari
Asian Journal of Social and Humanities Vol. 4 No. 1 (2025): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/0mjbkc75

Rapid urban population growth and poor spatial planning often lead to the formation of informal settlements, which are vulnerable to environmental degradation and contribute to greenhouse gas (GHG) emissions. This study estimates CO? emissions from the solid waste, wastewater, and clean water sectors in the slums of Depok City. Data was collected through questionnaires from 137 households and laboratory analysis of wastewater, with calculations based on specific emission factors for each sector. Total annual emissions reached 76.93 tons of CO?, with an average of 0.17 tons per person per year. Solid waste accounts for the largest portion (72.63%), followed by wastewater (21.08%). These findings emphasize the need for improvements in waste and wastewater management to support climate change mitigation efforts in urban informal settlements.

Landfill design based on methane gas emission estimates at Jatibarang Final Disposal Site (TPA) in Semarang City using LandGEM 3.03 and its potential utilization as an energy source Sukma, Bayu; Kristanto, Gabriel Andari; Dahlan, Astryd Viandila
Indonesian Journal of Multidisciplinary Science Vol. 4 No. 5 (2025): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v4i5.1092

This study aims to analyze the landfill design based on the estimated methane gas emissions at the Jatibarang Landfill, Semarang City, using the Landfill Gas Emissions Model (LandGEM) software version 3.03 and evaluate its potential utilization as an energy source. The study uses a quantitative approach utilizing mathematical modeling to estimate the estimated gas emissions from the landfill. The results show that the potential for electrical energy that can be generated from landfills is high enough to be recommended for management using the concept of Waste to Energy (WTE) into electrical energy. The recommendation that will be discussed is the management of methanogas emissions by being used as electrical energy, emphasizing infrastructure improvements for optimal energy production and reducing greenhouse gas emissions. This study could also incorporate real-time monitoring of gas emissions and energy production to better understand the dynamics of waste decomposition and the benefits of electricity generated from waste could foster community support for PLTSa initiatives.

The contribution of waste management to GHG emission reduction in urban areas (Case study of Jongkong Landfill, Bangka Tengah Regency, Bangka Belitung Islands Province) Della, Sevia; Kristanto, Gabriel Andari; Dahlan, Astryd Viandila
Indonesian Journal of Multidisciplinary Science Vol. 4 No. 5 (2025): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v4i5.1093

This study aims to evaluate the potential of various waste management scenarios to reduce greenhouse gas (GHG) emissions in urban settings, focusing on the Jongkong landfill in Bangka Tengah Regency, Indonesia. The methodology involved collecting data on waste generation, composition, and current practices from municipal records, categorizing municipal solid waste (MSW) into organic, plastic, and other waste types. Four waste management scenario scenarios were modeled: the Business as Usual (BAU) scenario, which reflected current disposal practices, a Biological Scenario that processed organic waste through anaerobic decomposition to produce biogas, and a thermal scenario that utilized pyrolysis for plastic waste to recover energy. The combined scenario showed the best emission efficiency with the lowest net emission value, which is 10,436.22 kg CO2 eq per year, compared to other scenarios. The biological scenario showed a better net emission than the existing one (17,467,402.15 kg CO2/year), supported by the application of anaerobic digestion (AD) which helps reduce emissions. The thermal scenario also showed good performance by generating net emissions of 2,645,866.25 kg CO2-eq/year, driven by the contribution of pyralysis and the reduction of emissions from open burning and indiscriminate disposal. This study not only enhances understanding of GHG emission reduction strategies but also contributes to the development of tailored waste management policies that can be implemented in similar urban contexts. This novel approach highlights the synergistic benefits of combined waste treatment technologies, offering actionable insights for policymakers and contributing localized data to enhance sustainable waste management practices in Indonesia.

Estimation of Greenhouse Gas (GHG) emissions in waste management in Pekanbaru City, Indonesia Hilal, Zia Ru`ya; Kristanto, Gabriel Andari; Dahlan, Astryd Viandila
Indonesian Journal of Multidisciplinary Science Vol. 4 No. 5 (2025): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v4i5.1094

Municipal waste production in Indonesia is rapidly increasing due to population growth and economic development, contributing significantly to greenhouse gas (GHG) emissions. This research aims to develop effective waste management scenarios for Pekanbaru City, focusing on reducing GHG emissions through integrated treatment methods. Employing a comprehensive methodology, the study estimates GHG emissions from various waste management practices, including biological, thermal, and mixed methods. The research utilizes a basic model to calculate emissions based on activity data and emission factors, exploring current practices and innovative strategies like Black Soldier Fly (BSF) larvae for organic waste treatment. Findings reveal that the Mix scenario, which combines multiple waste management processes, results in the most significant reduction of GHG emissions, achieving a net emission of 112,985.89 tons of CO?-eq/year, compared to the existing scenario with 637,864.33 tons of CO?-eq/year. The study identifies key emission hotspots, emphasizing the need for improved management of organic waste through composting and recycling. The implications of this research highlight the importance of adopting integrated waste management strategies to mitigate GHG emissions effectively. The findings provide actionable insights for policymakers, promoting sustainable practices aligned with the 3R hierarchy (reduce, reuse, recycle) and supporting targeted interventions that can enhance environmental sustainability in urban settings.

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