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All Journal Buletin Ekonomi Perikanan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Penelitian Perikanan Indonesia Jurnal Sosial Ekonomi Kelautan dan Perikanan Buletin Ilmiah Marina : Sosial Ekonomi Kelautan dan Perikanan Ilomata International Journal of Social Science Jurnal Rekayasan Lingkungan dan Biosistem
Tjahjo Tri Hartono
University Of Ibn Khaldun
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Barriers to Green Job Growth in Indonesia: Insights on Economic, Educational, and Social Challenges Sayaza, Mas Davino; Tri Hartono, Tjahjo
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 2 No. 2 (2024): Jurnal Relibi Vol.2 No.2 2024
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v2i2.1261

Abstract

This study examines the barriers to green job development in Indonesia, focusing on economic, educational, and societal dimensions. Using a literature review methodology, the research synthesizes findings from academic studies, policy reports, and government publications to identify key challenges. Economic barriers include insufficient investment, inadequate fiscal incentives, and limited financial access for small and medium enterprises (SMEs). Educational barriers highlight a lack of targeted training programs, insufficient integration of sustainability in curricula, and disparities in access to education in rural areas. Societal barriers are reflected in low public awareness, negative perceptions of green jobs, and limited inclusion of marginalized communities. These challenges constrain the growth of green industries and limit workforce readiness for emerging sectors. The study concludes that addressing these barriers requires coordinated efforts, such as enhancing investments, reforming education systems, and fostering societal engagement.
Connectivity Index Approach for Evaluating Transportation Infrastructure in Bogor Regency, 2024 Ningrum, Almyanti; Tri Hartono, Tjahjo; Nurhayati, Immas; Afrianto, Yuggo
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 2 No. 2 (2024): Jurnal Relibi Vol.2 No.2 2024
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v2i2.1333

Abstract

This study evaluates the transportation infrastructure in Bogor Regency by employing a comprehensive Connectivity Index to assess the extent of integration across various transportation modes. The research aims to address pressing challenges, including limited accessibility, inadequate integration, and traffic congestion. Using data on road and rail networks and transportation nodes, three key indicators were analyzed: road-based public transport connectivity, rail-based transport coverage, and the integration of major transportation nodes. Results reveal that road-based connectivity stands at 33.55%, while rail-based connectivity ratio and integrated node percentage are at 0.052 km/km² and 17.02%, respectively. These findings highlight the suboptimal state of intermodal integration in Bogor Regency. The study concludes that targeted investments in rail network expansion and the development of multimodal transportation nodes are imperative. Enhanced integration and connectivity will support sustainable transportation systems, improve mobility, and foster economic development in the region.
Financial Viability Assessment of Intermediate Waste Treatment Facilities in South Service Area of DKI Jakarta Riyadi, Rizal; Tjahjo Tri Hartono; Mas Davino Sayaza
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 3 No. 1 (2025): Jurnal Relibi Vol.3 No.1 2025
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v3i1.1679

Abstract

This study evaluates the economic feasibility of developing Intermediate Waste Treatment Facilities (ITFs) utilizing Waste-to-Energy technology in Jakarta's South Service Area. A comparative analysis was conducted using two scenarios: conventional landfill management versus ITFs implementation at two potential locations—Pesanggrahan (South Jakarta) and Sukapura (North Jakarta). The research employed secondary data analysis over one month in August 2021, utilizing financial indicators including Net Present Value (NPV), Internal Rate of Return (IRR), and Benefit Cost Ratio (BCR). Environmental and social externalities were integrated into the economic assessment. Results demonstrate that conventional landfill approaches yield negative present value of IDR 5.24 billion, indicating financial unsustainability. Conversely, WtE technology scenarios show positive economic viability: Pesanggrahan achieves NPV of IDR 441 million (IRR 12.12%, BCR 1.08), while Sukapura demonstrates superior performance with NPV of IDR 1.25 billion (IRR 16.15%, BCR 1.23). The findings establish clear economic justification for transitioning from disposal-based to resource recovery systems, with industrial zone locations offering strategic advantages for ITF development in Jakarta's waste management modernization strategy.
Physical, Chemical and Biological Analysis of Water Environment Quality in Tourism Area as a Basis for Sustainable Ecotourism Development in Bogor Zulaika, Aidha; Tri Hartono , Tjahjo; Saputra, Hery; Stephanie, Endah Nadiya
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 3 No. 1 (2025): Jurnal Relibi Vol.3 No.1 2025
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v3i1.1711

Abstract

Lakes are an important part of the inland water system that functions to maintain environmental stability, support biodiversity, and provide ecosystem services such as clean water supply, flood control, and natural recreation space. This study was conducted to analyze the quality of the lake and the lake's carrying capacity for fisheries and tourism facilities. Physical, chemical, biological parameters, and lake fertility index were calculated referring to the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number 5 of 2021 concerning Procedures for Issuing Technical Approvals and Operational Feasibility Letters for Environmental Pollution Control. The results of the study found high pollution parameters in BOD, COD, and TDS. Lake Lido is classified as having a fairly high pollution load with a lake with a Eutrophic trophic index so that further analysis is needed for the level of pollution distribution, lake carrying capacity and lake utilization management strategies for sustainable fisheries and tourism activities. Recommended strategy of Domestic Wastewater Treatment Plant is a system which meet the quality standards for domestic wastewater based on Permen LHK No. 68 of 2016, with an integrated system. As environmentally friendly fish farming strategy that is recommended was the use of SMART Floating Net Cages (KJA).
Use of Analytical Hierarchy Process (AHP) in the Environmental Function Recovery Plan for Battery Melting Waste in Bogor Regency: (Case Study on the Restoration of Land Contaminated by Used Battery Smelting Waste in Cinangka and Cinangneng Villages, Bogor Regency) Ismail, Gunawan; Susetyo, Budi; Hartono, Tjahjo Tri; Hidayaturrahman, Haerul; Wibowo, Rimun; Fatima, Ratih; Deviro, Sonya Okta; Sidik, Sahrul
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 3 No. 1 (2025): Jurnal Relibi Vol.3 No.1 2025
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v3i1.1712

Abstract

Environmental pollution caused by unmanaged scrap battery smelting activities in Cinangka and Cinangneng villages, Bogor Regency, has led to heavy metal contamination, particularly lead (Pb), which threatens public health and the ecosystem. This study employs the Analytical Hierarchy Process (AHP) to evaluate four contaminated land remediation methods encapsulation, on-site stabilization and solidification, phytoremediation, and dig and fill based on legal, technical, financial, and environmental aspects. The analysis results indicate that the dig-and-fill method is the best solution for addressing contamination at priority sites with high pollution levels and proximity to residential areas. This method effectively removes contaminated soil and replaces it with pollutant-free soil, thereby minimizing health risks. This study provides strategic recommendations to support land remediation policies in Bogor Regency.
Ecological Viability of Bamboo as an Alternative Revegetation Species for Post-Andesite Mining Land: A Comparative Assessment with Pioneer Species Hartono, Tjahjo Tri; Zulaika, Aidha; Harsono
Jurnal Rekayasa Lingkungan dan Biosistem Vol. 3 No. 1 (2025): Jurnal Relibi Vol.3 No.1 2025
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/relibi.v3i1.1723

Abstract

Andesite mining activities cause land degradation that requires revegetation efforts for ecosystem restoration. This study aims to evaluate the ecological feasibility of bamboo as an alternative revegetation species for post-mining sites compared to conventional pioneer plants through a systematic literature review. Analysis was conducted on 45 relevant scientific publications from indexed academic databases, focusing on adaptability, soil improvement, erosion control, and contribution to biodiversity. Results show that bamboo has significant advantages in root systems (fine root biomass 1.1-4.5 kg m⁻³), erosion control effectiveness, and carbon sequestration potential (6-13 Mg ha⁻¹ year⁻¹). Bamboo also demonstrates high adaptability to marginal land conditions and provides sustainable economic value through selective harvesting without damaging the root system. Compared to conventional pioneer plants, bamboo provides more stable long-term contributions to post-mining ecosystem restoration. This study recommends the use of bamboo as a primary component in andesite post-mining land revegetation programs in Indonesia.
Quality Assessment and Comparative Analysis of Malinau Coffee Among Indonesian Specialty Coffees Sutrisno, Adi; Wahyuni, Etty; Santoso, Dwi; Agang, Mohammad Wahyu; Titing, Deny; Kusnadi, Erwan; Hartono, Tjahjo Tri; Sayaza, Mas Davino; Novita, Elida; Pramulya, Rahmat; Rahmah, Devi Maulida
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.812-822

Abstract

Malinau Robusta coffee demonstrates untapped potential within the specialty coffee market. This study aims to evaluate the quality of Malinau coffee comprehensively and benchmark it against prominent specialty coffees such as Gayo, Toraja, and Kintamani. A descriptive quantitative method was employed to analyze critical parameters including caffeine content, moisture level, defect value, impurity level, grain size, and flavor profile. Coffee samples were gained from nine coffee-producing villages in Malinau Regency, involving 28 farmers covering 190 ha of coffee plantations. The results identified distinct strengths of Malinau coffee, notably its low moisture level (10.2%) and high caffeine content (1.94%) among the samples, offering a strong and intense flavor profile including chocolatey, a bitter aftertaste, and fruity undertones. Challenges for Malinau coffee includes high defect value (65.7/300 g) and impurity level (0.6%), which undermine its marketability in premium segments. To bring Malinau coffee up to par with other established specialty coffees, improvements in post harvest handling are needed, particularly sorting, quality control and consistent processes methods. By adopting innovative cultivation and processing, Malinau coffee holds strong potential as a competitor of specialty coffee, both for domestic and global markets while highlighting its unique regional identity. Keywords: Malinau coffee, North Kalimantan, Quality improvement, Robusta, Specialty coffee.
Co-Authors A. Azizi Adi Sutrisno Adi Sutrisno Agang, Mohammad Wahyu Agang, Wahyu Agus Heri Purnomo Aidha Zulaika Alba, Tarmizi Ari Purbayanto Arif Satria Aziz, Muhammad Jiddan Budi Susetyo Deny Titing Devi Maulida Rahmah Deviro, Sonya Okta DWI SANTOSO Elida Novita Erwan Kusnadi Etty Wahyuni Fajar, Ibrahim Fatima, Ratih Fatriyandi Nur Priyatna Harsono hery saputra Hidayaturrahman, Haerul Iksal Yanuarsyah Ismail, Gunawan Kartodihardjo, Hariadi Kusnadi, Erwan Lia Kamelia Aisya M Ali Iqbal M. Ali lqbal Mas Davino Sayaza Mas Davino Sayaza Mira Mira Mohammad Mukhlis Kamal Mohammad Wahyu Agang Mursidin Mursidin Ningrum, Almyanti Nurhayati, Immas Pramulya, Rahmat Rahma, Sukma Laksita Rahmat Pramulya Renea Shinta Aminda Rimun Wibowo, Rimun Riyadi, Rizal Robin Robin, Robin Sakti, Fikri Santoso, Dwi Saripudin, Usep Sayaza, Mas David Sayaza, Mas Davino Sidik, Sahrul Siti Rahmawati Sonny Koeshendrajana Sonny Koeshendrajana Sonny Koeshendrajana Stephanie, Endah Nadiya Taryono Tenny Apriliani Titing, Deny Trie, Triyanto Wahyuni, Etty Yudi Setiawan Yuggo Afrianto Zahri Nasution Zahri Nasution Zahri Nasution Zulaikha, Aidha