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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Teknik Elektro Jurnal Dampak Prosiding Semnastek Jurnal Litbang Industri Syntax Literate: Jurnal Ilmiah Indonesia PEDAGOGIA Jurnal Serambi Engineering Jurnal Pembangunan Nagari Jurnal Cahaya Mandalika Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Litbang Industri INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Journal of Civil Engineering and Vocational Education
Slamet Raharjo
Study Program Of Civil Engineering, Faculty Of Engineering, Universitas Sebelas Maret, Surakarta, Central Java, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Transportation Other

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Analysis of production and potential utilization as electricity methane gas air dingin landfill Pratama, Dedy Aulya; Raharjo, Slamet; Aziz, Rizki
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i1.31823

Abstract

This study intends to analyze methane gas emissions resulting in landfill procedures. The magnitude of the impact of methane gas emissions on global warming from the waste sector, it is necessary to calculate the potential amount of methane gas emissions of Padang city waste in the Air Dingin Landfill so that it can be used for new energy potential as an alternative energy to replace fossil fuels no longer as a contributor to global warming. In this study, the methodology contains systematic steps in researching to achieve research objectives, namely conducting preliminary studies and literature studies, formulating problems, and setting research objectives as well as how to collect and obtain research data. The result of this study is that the Air DIngin Landfill in Padang City is still processing open dumping, with land that has been operated around 50% of the existing land area. The high operational costs are one of the reasons the sanitary landfill system cannot be done by the Padang City Government. Methane gas produced from 2020 - 2031 in the Air Dingin Landfill is produced from scenario 1 (waste directly landfilled) which is 43,289 gigagrams of CH4 or 43,289 tons of CH4 emissions. CH4 emission scenario 2 (waste reduction by waste pickers in landfill) produced 43,267 gigagrams or 43,267 tons of CH4. CH4 emission scenario 3 (Reduction of waste at source, in the region, and in landfill) produced 40,944 gigagrams CH 4 or 40,944 tons of CH4. After converting methane gas into electrical energy, the potential electricity in scenario 1 is 84.15 megawatts, scenario 2 is 84.10 megawatts and scenario 3 is 79.59 megawatts in 2031.
Characterization of Fecal Sludge Combined with Sawdust as Briquettes Suci Wulandari; Puti Sri Komala; Slamet Raharjo
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 21, No 2 (2024): July 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v21i2.324-338

Abstract

This study aimed to characterize fecal sludge (FS) combined with sawdust (SD) as non-charcoal briquettes. The combination consists of var.1 (FS 75% : SD 25%), var.2 (FS 50% : SD 50%), and var.3 (FS 25% : SD 75%). Fecal sludge was obtained from the sludge drying bed of a fecal sludge treatment plant (FSTP) in Malang City, and sawdust was obtained from the furniture workshop. Labor scale briquettes were produced, measured and analyzed the calorific value (ASTM D 5865-01), proximate analysis (SNI 06-3730-1995 and SNI 01-6235-2000), sulfur (ASTM D3177), and density (SNI 8021-2020). The characteristic results the moisture content 3.26%-7.57%, volatile matter 48.68%-68.97%, ash content 12.02%-32.97%, fixed carbon 11.44%–26.62%, calorific value 4,237.78–5.158.64 cal/g, sulfur 0.23%–0.41%, and density 0.50-0.68 (g/cm3). Compared with pure fecal sludge briquettes, the addition of sawdust increased the calorific value of fecal sludge briquettes by up to 32% and decreased ash content by up to 40%. All variations met the standard of SNI 8021:2020, except for the density for var.2 and var 3. Based on MCA, the best variation is var.2 with a score of 45 and requires modification for density to meet the standard of SNI 8021:2020.
Comparative Study of Electronic Waste Management in Developed Countries and Indonesia Raharjo, Slamet; Utomo, Al Hadi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 1 No. 1 (2021): July 2021
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v1i1.4

Abstract

Electronic waste management in Indonesia is currently not a major concern for various parties and is relatively left behind when compared to developed countries. This study aims to evaluate the existing conditions of electronic waste management in Indonesia and compile recommendations for electronic waste management programs in Indonesia. This research was conducted by collecting primary data from questionnaires and collecting secondary data from the literature on electronic waste management in developed countries (United States, Japan, and Switzerland) and Indonesia. The collected data were compared and analyzed for compiling strategy in the SWOT (Strengths, Weaknesses, Opportunities, Threats). Recommendation programs for electronic waste management in Indonesia were established based on SWOT Matrix. The evaluation results show that the existing conditions of electronic waste management in Indonesia are lagging compared to developed countries. The management recommendation program provided is the 4R programs (Reduce, Reuse, Recycle and Remove) for electronic waste; Dropbox to collect electronic waste; Development of formal electronic waste management infrastructure; Industrial revitalization / private electronic waste recycling facilities; Development of electronic waste landfill; Application of economic instruments for electronic manufacturers; Extended Producer Responsibility (EPR) for electronic equipment; Trade-in for all electronic products; and cooperate with the informal sector. Keywords: Developed countries, Electronic waste, Program recommendations, SWOT analysis, Waste management.
Comparative Study of Electronic Waste Management in Developed Countries and Indonesia Raharjo, Slamet; Utomo, Al Hadi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 1 No. 1 (2021): July 2021
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v1i1.4

Abstract

Electronic waste management in Indonesia is currently not a major concern for various parties and is relatively left behind when compared to developed countries. This study aims to evaluate the existing conditions of electronic waste management in Indonesia and compile recommendations for electronic waste management programs in Indonesia. This research was conducted by collecting primary data from questionnaires and collecting secondary data from the literature on electronic waste management in developed countries (United States, Japan, and Switzerland) and Indonesia. The collected data were compared and analyzed for compiling strategy in the SWOT (Strengths, Weaknesses, Opportunities, Threats). Recommendation programs for electronic waste management in Indonesia were established based on SWOT Matrix. The evaluation results show that the existing conditions of electronic waste management in Indonesia are lagging compared to developed countries. The management recommendation program provided is the 4R programs (Reduce, Reuse, Recycle and Remove) for electronic waste; Dropbox to collect electronic waste; Development of formal electronic waste management infrastructure; Industrial revitalization / private electronic waste recycling facilities; Development of electronic waste landfill; Application of economic instruments for electronic manufacturers; Extended Producer Responsibility (EPR) for electronic equipment; Trade-in for all electronic products; and cooperate with the informal sector. Keywords: Developed countries, Electronic waste, Program recommendations, SWOT analysis, Waste management.
Kajian Aspek Pengolahan Sampah Padang Menggunakan Metode Life Cycle Assessment Maryam, Annisa; Raharjo, Slamet; Aziz, Rizki
CIVED Vol. 10 No. 1 (2023): March 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i1.438112

Abstract

Pengelolaan sampah di perkotaan meliputi sektor formal dan sektor informal. Sektor formal pada penelitian ini merupakan bank sampah dan sektor informal yaitu pemulung, lapak, dan bandar. Penilaian terhadap sistem pengelolaan sampah di Kota Padang perlu dilakukan untuk mengetahui apakah program pemerintah menjadi solusi terbaik dalam sistem manajemen sampah atau sektor informal dinilai lebih efisien dalam daur ulang sampah yang ditinjau berdasarkan aspek pengumpulan dan pengolahan, dengan merencanakan 3 skenario pengelolaan sampah yaitu (1) sistem pengelolaan sampah sektor informal (pemulung), (2) sistem pengelolaan sampah dengan bank sampah, (3) sistem manajemen sampah kombinasi antara sektor informal dengan bank sampah. Life Cycle Assessment dianalisis menggunakan SimaPro. hasil pembobotan dari normalisasi penilaian dampak menggunakan metode CML-IA dari software SimaPro, skenario 2 memiliki nilai paling besar yaitu 4,8313 x 10-20 dan skenario 3 memiliki nilai yang paling kecil yaitu 4,0930 x 10-20. Karakterisasi dampak yang dihasilkan skenario 1, 2 dan 3 untuk nilai Global Warming Potential berturut-turut yaitu 1,6822 x 10-11 kg CO2-eq, 1,9680 x 10-11 kg CO2-eq dan 1,6661 x 10-11 kg CO2-eq; nilai Acidification Potential yaitu 3,7122 x 10-12 kg SO2-eq, 4,3200 x 10-12 kg SO2-eq dan 3,6540 x 10-12 kg SO2-eq; dan nilai Eutrophication Potential yaitu 2,0609 x 10-12 kg PO43-, 2,4391 x 10-12 kg PO43- dan 2,0690 x 10-12 kg PO43-. Skenario sistem manajemen sampah kombinasi antara sektor informal dengan bank sampah merupakan alternatif terbaik untuk pengelolaan sampah di Kota Padang
Insentif Dalam Pengelolaan Sampah Plastik: Pengalaman Kota Surabaya dan Kota Padang Alfitri, Alfitri; Afrizal, Afrizal; Helmi, Helmi; Raharjo, Slamet
Jurnal Cahaya Mandalika ISSN 2721-4796 (online) Vol. 3 No. 3 (2022)
Publisher : Institut Penelitian Dan Pengambangan Mandalika Indonesia (IP2MI)

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

Abstract

Sampah plastik merupakan salah satu masalah lingkungan global saat ini. Banyak negara termasuk Indonesia berupaya mengembangkan tindakan penanggulangannya. Salah satu upaya penanggulangannya adalah dengan memberikan insentif terhadap upaya pengurangan, penggunaan kembali, dan daur ulang (3R) sampah plastik tersebut. Artikel ini mencoba melihat kebijakan insentif apa saja yang diterapkan di Jerman dan Indonesia dengan melihat kasus di Kota Surabaya dan Kota Padang. Penelitian dilakukan secara kualitatif dengan menelusuri literatur dan berita terkait. Selain itu, observasi dan wawancara dilakukan khusus untuk kasus di Kota Padang. Di Eropa, Jerman merupakan negara dengan kebijakan dan implementasi paling maju dalam hal ini. Indonesia pun saat ini sudah mempunyai kebijakan untuk menangani hal ini termasuk memberikan insentif terhadap upaya 3R terhadap sampah plastik. Di Surabaya misalnya, pada April 2018 diluncurkan penukaran sampah botol plastik dengan tiket bus kota. Program ini diterima dengan baik oleh masyarakat dan berlanjut hingga saat ini. Di Kota Padang, plakat penghargaan diberikan kepada para pelaku usaha yang ikut serta dalam upaya sampah plastik 3R sebagai insentif. Selain itu, “tur menyenangkan dengan sampah plastik”; diluncurkan program dimana masyarakat dapat menukarkan sampah botol plastik dengan tiket naik bus wisata keliling kota Padang. Namun, program insentif tersebut masih bersifat sporadis dan dihentikan. Kedepannya diperlukan perencanaan yang lebih baik lagi terkait program insentif ini agar dapat terus berlanjut dan bermanfaat bagi upaya penanggulangan sampah plastik.
Analysis of production and potential utilization as electricity methane gas air dingin landfill Pratama, Dedy Aulya; Raharjo, Slamet; Aziz, Rizki
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i1.31823

Abstract

This study intends to analyze methane gas emissions resulting in landfill procedures. The magnitude of the impact of methane gas emissions on global warming from the waste sector, it is necessary to calculate the potential amount of methane gas emissions of Padang city waste in the Air Dingin Landfill so that it can be used for new energy potential as an alternative energy to replace fossil fuels no longer as a contributor to global warming. In this study, the methodology contains systematic steps in researching to achieve research objectives, namely conducting preliminary studies and literature studies, formulating problems, and setting research objectives as well as how to collect and obtain research data. The result of this study is that the Air DIngin Landfill in Padang City is still processing open dumping, with land that has been operated around 50% of the existing land area. The high operational costs are one of the reasons the sanitary landfill system cannot be done by the Padang City Government. Methane gas produced from 2020 - 2031 in the Air Dingin Landfill is produced from scenario 1 (waste directly landfilled) which is 43,289 gigagrams of CH4 or 43,289 tons of CH4 emissions. CH4 emission scenario 2 (waste reduction by waste pickers in landfill) produced 43,267 gigagrams or 43,267 tons of CH4. CH4 emission scenario 3 (Reduction of waste at source, in the region, and in landfill) produced 40,944 gigagrams CH 4 or 40,944 tons of CH4. After converting methane gas into electrical energy, the potential electricity in scenario 1 is 84.15 megawatts, scenario 2 is 84.10 megawatts and scenario 3 is 79.59 megawatts in 2031.
Community-Centered Plastic Waste Management: Leveraging Household Participation via Waste Bank in Padang, Indonesia Alfitri Alfitri; Afrizal Afrizal; Slamet Raharjo; Lucky Zamzami; Sudarmanto Budi Nugroho; Van Huynh Thanh Pham
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 9, NUMBER 1, APRIL 2026
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v9i1.23919

Abstract

Plastic waste in Indonesia threatens environmental sustainability and health. This study explores waste bank as a social innovation based on the 3R principle, as a means of education, behavior change in waste management, and the implementation of the circular economy. Aims: This study aims to identify and describe the practices and reasons of household participation in waste bank, also the efforts of administrators to increase it. Methodology and results: Using Giddens' structuration theory and a mixed-methods approach, this study indicates promising results regarding the participation process in plastic waste management at the community level. This article examines a case of a waste bank, which is developing well in the city of Padang, Indonesia. The results revealed that most customers of the waste bank deposit plastic waste biweekly, where generally household members are involved in sorting waste at home. Conclusion, significance and impact study: The cause of the high level of household participation is a combination of environmental awareness and economic incentives. Household participation is relatively high and gives hope for sustainable plastic waste management. The efforts of waste bank administrators provide additional services leveraging household participation in waste bank. Awareness to protect the environment is the main driver of household participation. The innovation of waste pick-up services using motorcycle rickshaws implemented by the management of the Waste Bank. The use of waste bank in managing plastic waste will have an impact on achieving SDG 11.6.
Co-Authors Afrizal Afrizal Alfitri Alfitri Alfitri Alfitri Andi Asmunandar Ardinal Ardinal Ardinal, Ardinal Aulia Azhar Chairil Syam Dahlia, Karlina Puspa Dean Eka Putri Dharma Wangsa Dina Fathia Putri Fadjar Goembira Gewe, Rima Senditya Helmi Helmi Heru Surianto Indriyani Rachman Iskandar R, Iskandar R Lucky Zamzami Mahfud, Achmad - Manik, Nengteng Maryam, Annisa Matsumoto, Toru Muarif, Samsul Musytaqim Nasra Nofri Dodi Olivia Andiana Pratama, Dedy Aulya Puti Sri Komala Rahayu, Ida Rati Yuliarningsih Refi Martha Rima Senditya Gewe Rizki Aziz Santuso, Edy Sri Rahmiwati Yuned Suci Wulandari Sudarmanto Budi Nugroho Surendra, Surendra Syafii . Taufiq Ihsan Tiara Wahyuni Utomo, Al Hadi Van Huynh Thanh Pham Vera Surtia Bachtiar Viandry Tetriva Putri Yenni Ruslinda Zagita Andriani Ariska