Agricultural and Biological Sciences, Environmental Science, Aquatic Science, Renewable Energy, Sustainability and the Environment
43
Scopus Publications
Scopus Publications
Environmental impact assessment of water hyacinth pyrolysis to produce bio-oil Rita Dwi Ratnani, Nuha Nuha, Soen Steven, Arif Dwi Santoso, Ira N. Djarot, Miranti D. Pertiwi, Joko Triastono, Aldicky F. Amri, Hermawati Cahyaningrum, Rahmania Admirasari, Hadiyanto Hadiyanto, Intan C. Sophiana, Forita Dyah Arianti Canadian Journal of Chemical Engineering, 2026 The future of sustainable chemicals lies in the adoption of renewable sources such as biomass conversion. One unique biomass that can be utilized is water hyacinth. Apart from being able to overcome river pollution, its valorization can produce bio‐oil. In this study, the environmental impacts of water hyacinth pyrolysis were assessed. It employed the life cycle assessment (LCA) approach with a cradle‐to‐gate system boundary and a functional unit of 50 kg of bio‐oil. The pyrolysis of 250 kg of pretreated water hyacinth at 400°C demonstrated a yield of 19.45% ± 1.02% for bio‐oil. Following the results, the pyrolysis process predominantly contributes to 66.2%–99.7% of environmental impacts due to the high liquid petroleum gas (LPG) requirement. The sensitivity results exhibit a meaningful change of impacts under alteration of ±10% LPG consumption. The findings underscore the environmental benefits of converting water hyacinth into bio‐oil to address its ecological challenges while simultaneously enhancing sustainability.
An Integrated real-time water quality monitoring system for sustainable management in tropical reservoirs H.D. Wahyono, A.D. Santoso, G. G. G. Goh, G Setiaji, M.A. Salim, et al. Global Journal of Environmental Science and Management, 2026 BACKGROUND AND OBJECTIVES: The rapid deterioration of water quality in large tropical reservoirs threatens ecological integrity, water security, and socio-economic stability, particularly in developing regions with limited environmental monitoring capacity. Conventional approaches to water quality monitoring, predominantly based on manual sampling and stationary sensors, face limitations due to poor spatial and temporal resolution, which often obstructs timely detection and management of pollution incidents. The aims of the study were to create and validate a comprehensive, adaptive real-time monitoring system that combines static, stratified, and mobile sensing approaches into a scalable framework for sustainable reservoir management.METHODS: Sixteen static (fixed-location) monitoring stations were strategically deployed across the Jatiluhur Reservoir, Indonesia’s largest multipurpose water body, to continuously measure key parameters including dissolved oxygen, temperature, potential of Hydrogen, turbidity, and conductivity. Real-time data transmission was facilitated through Global System for Mobile based communication networks linked to a central analytical platform, where sensor data were verified against laboratory instruments that meet International Organization for Standardization-standard laboratory instruments to ensure accuracy and dependability.FINDINGS: The system demonstrated an average operational reliability of 92.4 percent across sixteen monitoring stations, with eight stations consistently achieving data availability rates above 90 percent. It effectively identified hypoxic regions where dissolved oxygen concentrations fell below 2.5 milligrams per liter, turbidity levels surpassed 30 nephelometric turbidity units, and temperature stratification differences reached as high as 6 degrees Celsius between the surface and bottom layers during upwelling periods. Comparative analysis with international benchmarks revealed that the integrated system improved data consistency by 12–15 percent and reduced response time by 35 percent relative to conventional monitoring systems. The integration of real-time validation and AI-assisted analytics further enhanced predictive capability, achieving correlation coefficients greater than 0.92 between field sensors and International Standart Organization standard laboratory measurements. CONCLUSION: The integrated real-time monitoring system provides a replicable model for adaptive and sustainable reservoir governance, supporting both environmental protection and operational efficiency. The system's execution aids in the formulation of environmentally sustainable policies based on data and effective reservoir management strategies, aligning with international water governance standards. These findings demonstrate the system’s potential as a critical tool for achieving long-term water resource sustainability in tropical developing regions.
Environmental impact of car wash services by performing life cycle perspective I. Firmansyah, A.D. Santoso, N. Nuha, F.L. Sahwan, F. Suryanto, et al. Global Journal of Environmental Science and Management, 2025 BACKGROUND AND OBJECTIVES: The car wash industry has grown rapidly globally, spurred by increasing vehicle ownership and demand for convenient services. However, this sector is linked to environmental challenges, including excessive water consumption, chemical runoff, and high energy use. This is the first life cycle assessment to assess the environmental impact of vehicle wash services in Indonesia, focusing on water usage, chemical discharge, energy consumption, and waste creation in car wash operations.METHODS: The life cycle assessment method was employed to assess three stages of car wash processes including wet processing, dry processing, and chemical usage from water supply to waste management. The functional unit, defined as the washing of a single vehicle, serves as the reference point for data inventory and impact assessments. A sensitivity study was performed to evaluate the robustness of the results by analysing the impact of fluctuating electricity consumption.FINDINGS: The result showed that automated car wash systems consume between 150-190 liters of water per wash, while manual services use approximately 100-120 liters. Chemical runoff, including detergents, surfactants, and heavy metals, poses a significant threat to aquatic ecosystems, especially in areas with inadequate wastewater treatment infrastructure. Energy consumption, driven by the use of high pressure pumps and dryers, contributes substantially to greenhouse gas emissions and fossil fuel depletion. Sensitivity analysis indicates that energy consumption is a key driver of environmental impact, particularly in regions relying on coal-based power grids. The study further explores mitigation strategies such as water recycling systems, the adoption of biodegradable detergents, and the integration of renewable energy sources into car wash operations. These practices are shown to reduce water usage by up to 60 percent decrease chemical runoff, and cut energy related emissions by approximately 30 percent.CONCLUSION: The findings underscore the need for regulatory reforms and industry wide adoption of sustainable practices to minimize the environmental footprint of car wash services. This study contributes new insights into the sustainability of this growing industry and offers actionable recommendations for reducing its ecological impact.
Mapping stakeholders’ dynamics for sustainable PKC distribution in cattle feed: An integrated MICMAC-MACTOR analyses Priyono, Atien Priyanti, Robet Asnawi, Yayat Hidayat, I Gusti Ayu Putu Mahendri, Dwi Yulistiani, Hotmatua Daulay, Arif Dwi Santoso, Uning Budiharti, Astu Unadi, Adji Parikesit, Umi Karomah Yaumidin, Irawan Environmental Challenges, 2025 • MICMAC–MACTOR analysis finds key leverage for PKC access as cattle feed. • Government and institutions are crucial for sustainable PKC distribution systems. • Price, supply, and quantity impact access and resilience in the PKC system. • Collaborative, cross-sector governance enhances the sustainability of the feed system Palm kernel cake (PKC), a by-product of the palm oil industry, is considered a sustainable and affordable cattle feed source in Indonesia. However, its adoption remained constrained by institutional fragmentation, market inefficiencies, and logistical challenges. To address this, the study evaluates how accessible PKC is as sustainable cattle feed, using an integrated approach that combines the Matrix of Cross-Impact Multiplications Applied to Classification (MICMAC) and the Matrix of Alliances and Conflicts: Tactics, Objectives, and Recommendations (MACTOR) analyses. A total of 32 respondents and 14 key stakeholders involved in the PKC supply chain from three districts in Riau Province participated in the study. Data was collected through structured questionnaires, focus group discussions, and in-depth interviews. Respondents involved in cattle farming who rely on PKC as an alternative feed were selected using purposive sampling. The results of MICMAC analysis showed that government and institutional actors as key leverage points for improving access to PKC, with price, suppliers, and quantity being the main economic factors. The MACTOR analysis revealed that structural imbalances of dominant actors, such as the feedlot association, plasma association, and feed suppliers, wield significant influence. Meanwhile, relay actors, including livestock services, the directorate, estate services, and grassroots organizations, are highly dependent and under-resourced. Autonomous stakeholders like the palm oil association, universities, and banks remained under-mobilized. Additionally, divergence mapping showed tensions between stakeholders focused on export markets and those prioritizing food security. These findings highlight the importance of multi-level, collaborative governance to improve system alignment, infrastructure, and institutional capacity for sustainable livestock feed strategies. The study recommends establishing a cross-sectoral governance platform to align institutional priorities, strengthen infrastructure, and improve stakeholder coordination. Future research should also explore financial models for local cooperative-based PKC distribution systems.
Sustainable utilization of palm oil industry by-products for livestock feed: A digestibility and environmental assessment Arif Dwi Santoso, Evi Sribudiani, Atien Priyanti, Dwi Yulistiani, Hotmatua Daulay, Rahmania Hanifa, I Gusti Ayu Putu Mahendri, Priyono, Umi K. Yaumidin, Arsyadi Ali, Edi Erwan, Dudi Iskandar, Ira Nurhayati Djarot Case Studies in Chemical and Environmental Engineering, 2025 The palm oil industry generates substantial by-products with potential as alternative livestock feed. This study evaluated the digestibility and environmental impacts of two feed formulations: one combining oil palm fronds, solid decanter, and palm kernel cake, and another using oil palm fronds, palm kernel cake, and grated sago. Digestibility was assessed via the total collection method, while environmental performance was measured through openLCA 2.0 software, employing the CML-IA method with the Ecoinvent 3.8 database. The sago-based feed showed higher digestibility (65.71%) but a poorer feed conversion ratio (16.81), primarily due to higher dry matter intake that increased overall feed consumption without a proportional gain in weight. Conversely, the solid decanter-based feed achieved better feed conversion ratio (11.53) but higher carbon emissions (223.415 kg CO 2 -eq/ton) compare with sago feed (197.243 kg CO 2 -eq/ton). In both feed formulations, feedstock mixing was identified as the dominant emission source, contributing over 99% of total GHG emissions. These findings highlight trade-offs between nutritional efficiency and sustainability, emphasizing the need for low-impact ingredients and improved processing to optimize feed production.
Strategies for sustainable behavior and emission reduction through individual carbon footprint analysis A. Haryanto, A.D. Santoso, M. Hanif, I.M. Ihsan, R. Oktivia, et al. Global Journal of Environmental Science and Management, 2025 BACKGROUND AND OBJECTIVES: Climate change mitigation and food security are critical global priorities, with greenhouse gas emissions, particularly carbon dioxide, significantly contributing to climate change. Indonesia, with an annual per capita greenhouse gas emission of 7.5 tons of carbon dioxide equivalent, faces a substantial challenge in reducing its emissions. This study aims to investigate the individual carbon footprint of employees at a research institution in Indonesia, providing insights into individual contributions to GHG emissions and identifying key areas for targeted mitigation strategies.METHODS: Data were collected through an online survey from 77 government employees at the National Research and Innovation Agency, Indonesia, focusing on activities with high emission potential: transportation, food consumption, electricity use, waste creation, and other daily activities. The individual carbon footprint was calculated by converting activity data to carbon dioxide emissions using appropriate emission factors. The analysis included a breakdown of emissions by scope (direct and indirect) and demographic factors such as gender and income level.FINDINGS: The study found that the average individual carbon footprint of the employees was 7.42 tons of carbon dioxide equivalent per year, significantly higher than the national average of 2.03 tons of carbon dioxide equivalent per year. Scope 1 emissions contributed 13 percent, primarily from employee bus usage, while Scope 2 emissions (indirect emissions from electricity use) accounted for 18 percent. The largest share of emissions, 69 percent, came from Scope 3 activities, with food consumption and transportation being major contributors. Men exhibited a higher personal carbon footprint than women, driven by greater travel and food consumption, while women had higher emissions from entertainment activities. Higher-income levels correlated with increased personal carbon footprint, highlighting the impact of socioeconomic status on carbon emissions.CONCLUSION: The elevated individual carbon footprint among research institution employees underscores the need for targeted strategies to reduce emissions in high-income and high-consumption groups. Behavioral interventions, institutional policies promoting sustainable practices, and comparative studies across different sectors are recommended for future research. By addressing specific emission sources and influencing factors, it is possible to develop effective strategies to reduce individual carbon footprints and support global climate change mitigation efforts.
Strategic sustainability assessment of rural agribusiness infrastructure systems in humid tropical regions S.J. Munarso, W. Purwanta, H.M. Elmatsani, A. Hendriadi, A. Arianto, et al. Global Journal of Environmental Science and Management, 2025 BACKGROUND AND OBJECTIVES: Agribusiness infrastructure systems play a pivotal role in rural transformation by strengthening local economies, reducing post-harvest losses, and advancing sustainable food supply chains. In the context of the global development agenda, their significance is directly associated with the sustainable development goals, especially in fostering food security, alleviating poverty, and encouraging environmentally sustainable practices. Despite this significance, empirical evidence on their long-term sustainability in humid tropical regions remains limited, leaving policymakers without comprehensive guidance for effective interventions. This study tackles the existing gap by assessing the multifaceted sustainability of agribusiness distribution systems and developing strategic approaches for their enhancement.METHODS: A multidimensional scaling technique, consistent with the sustainability assessment framework of food and agriculture systems, was utilized to evaluate the economic, social, environmental, technological, and institutional dimensions. Data collection involved stakeholder surveys, expert evaluations, and field observations, with robustness tested using Monte Carlo simulations. Leverage analysis was used to identify influential attributes, while strategic options were crafted using the strengths, weaknesses, opportunities, and threats framework. A case study was conducted on a rural agribusiness sub-terminal in West Java, Indonesia, to illustrate the framework.FINDINGS: The evaluation categorized the system as having low sustainability, with total scores falling below 50 percent. The lowest performances were observed in the technological (29.33 percent) and economic (34.61 percent) dimensions, followed by environmental (42.07 percent) and institutional (43.76 percent) aspects. Social performance was comparatively stronger, though it remained moderate. The leverage analysis highlighted financial access, digital innovation, and emission reduction as critical factors. Strategic analysis highlighted opportunities in fintech adoption, clean technologies, and multi-stakeholder collaboration, while main threats included climate risks, regulatory uncertainty, and market volatility.CONCLUSION: The study proposes an integrated strategic framework across eight domains: financial empowerment, market stability, social inclusion, community strengthening, environmental management, technology adoption, governance, and institutional collaboration. The framework provides valuable insights that can be applied to improve agribusiness distribution systems in humid tropical areas and offers a replicable guide for planning sustainable rural infrastructure. Methodologically, it demonstrates the novelty of combining multidimensional scaling with strengths, weaknesses, opportunities, and threats framework to bridge diagnostic assessment and strategic design, offering both theoretical and policy-relevant contributions.
Global Benchmarking of Beef Cattle's Climate Impact: A Meta-Analysis of GWP Values Fensa Eka Widjaya, Muhammad Nasir Rofiq, L. M. Risman Dwi Jumansyah, Arif Dwi Santoso, Ermin Widjaja, Bambang Ngaji Utomo, Lintje Hutahaean, Suryani, Nugroho Adi Sasongko, Anuraga Jayanegara International Journal of Design and Nature and Ecodynamics, 2025
Developing a Sustainable Beef Cattle Business Model for Smallholder Farms in South Kalimantan's Drylands Eni Siti Rohaeni, Nyak Ilham, Ratna Ayu Saptati, Heni Sulistyawati Purwaning Rahayu, Priyono, Yenny Nur Anggraeny, Retna Qomariah, Dicky Pamungkas, Sara Sorayya Ermuna, I. Gusti Ayu Putu Mahendri, Mariyono, Yanti Rina Darsani, Lintje Hutahaean, Raden Heru Praptana, Susi Lesmayati, Salfina Nurdin Ahmad, Syamsu Bahar, Sri Hastuti Suhartini, Arif Dwi Santoso, Susana I.W. Rakhmani International Journal of Sustainable Development and Planning, 2024
Forecasting and Sustainability of Raw Water Supply for Indonesia’s New Capital Nusa Idaman Said, Taty Hernaningsih, Teddy Wartono Sudinda, Satmoko Yudo, Wahyu Widayat, Nicco Plamonia, Arif Dwi Santoso, Setiyono, Heru Dwi Wahyono, Agus Rifai, Imam Setiadi, Oman Sulaeman International Journal of Sustainable Development and Planning, 2024
Integrated Microalgae Cultivation for Sustainable Wastewater Treatment and Carbon Dioxide Bio-Fixation in Milk Factories Titin Handayani, Fajar Eko Priyanto, Susi Sulistia, Avi Nurul Oktaviani, Nida Sopiah, Arif Dwi Santoso, Agusta Samodra Putra, Ira Nurhayati Djarot, Netty Widyastuti, Donowati Tjokrokusumo, Heri Apriyanto, Akhmad Rifai, Abdul Aziz, Sri Peni Wijayanti, Hismiaty Bahua, Nuha Nuha, Febrian Isharyadi, Ari Kabul Paminto, Nadia Rizki Ariyani International Journal of Sustainable Development and Planning, 2023