https://journal.uii.ac.id/JSTL <p style="text-align: justify;">Jurnal Sains &amp; Teknologi Lingkungan (JSTL) published twice a year in January and June is a scientific journal that publishes scientific research papers and ideas in the field of science and technology related to environmental issues. The journal covers typical subjects of environmental sciences and technologies such as.: Drinking water treatment, wastewater treatment, solid waste treatment, solid waste management, cleaner production, air pollution management, resource recovery, water pollution, soil contamination, and other relevant fields.</p> en-US <p>Authors who publish with this journal agree to the following terms:</p><ol type="a"><li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by-sa/4.0">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li><li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li><li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</li></ol> [email protected] (Prof. Eko Siswoyo, Ph.D.) [email protected] (Diah Ayu Prawitasari, S.T., M.T.) Tue, 06 Jan 2026 07:28:37 +0000 OJS 3.3.0.10 http://blogs.law.harvard.edu/tech/rss 60 https://journal.uii.ac.id/JSTL/article/view/42634 <p><em>This research was conducted to provide data on water quality based on physical and chemical parameters around the fishpond area</em><em>, Citarum Watersheds, </em><em>in Karawang Regency. Water quality is a primary requirement for the sustainability of local economic activities. However, with the increasing pollution load, there is concern that water quality around the fishpond area will decline, impacting fishpond productivity, public health, and the environment.</em> <em>Water samples were collected at </em><em>10</em><em> points along the Citarum </em><em>Watersheds </em><em>using a water quality test pen. The measured physico-chemical parameters included temperature, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), pH, Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). The results indicate that several physico-chemical parameters still do not meet the quality standards established by Government Regulation (PP) Number 22 of 2021. These include BOD and DO, where concentrations at all observation points exceeded the quality standards, while the COD values exceeded the standard at most points, except at stations 1-5. This exception is due to their considerable distance from agricultural activities or other community practices. The high COD concentration indicates a significant load of organic pollutants, which are suspected to originate from agricultural runoff and domestic waste. Conversely, the low DO concentration is caused by microorganisms in the water body utilizing the oxygen. These microorganisms require DO as an electron acceptor in their metabolic processes, leading to a decrease in DO levels in the water and a corresponding increase in BOD. The BOD/COD ratio at the study site ranged from 0.46 to 0.5, meaning the pollutants are categorized as biodegradable. Therefore, it can be concluded that the waters in the downstream region of the Citarum River are still suitable for use in freshwater aquaculture activities.</em></p> Nurul Amri Komarudin, Selly Arvinda Rakhman, Jairus Jesse M. Tubal Copyright (c) 2025 https://journal.uii.ac.id/JSTL/article/view/42634 Thu, 01 Jan 2026 00:00:00 +0000 https://journal.uii.ac.id/JSTL/article/view/42286 <p><em>Indonesia is one of the world's largest contributors to carbon emissions, primarily from the fossil-fueled land transportation sector. The COVID-19 pandemic demonstrated that a reduction in mobility could significantly decrease emissions, especially in densely populated areas with suboptimal public transportation systems. In addition, inequality in population distribution and differences in socioeconomic characteristics between regions lead to environmental pressures that vary across Indonesia. This study aims to analyze the impact of population mobility and socio-economic indicators on carbon monoxide (CO) emissions in Indonesia during the unique pandemic period of 2020-2022. The method used is the Random Effect Model for panel data regression. The results show that mobility to workplaces and stores, economic growth, and poverty levels have a significant negative effect on emissions. Conversely, mobility in residential areas and population density have a significant positive effect. The variables of mobility to transit stations and Foreign Direct Investment (FDI) were found to be not significant. These findings point to the need for low-emission transportation and household energy efficiency policies that are responsive to mobility dynamics and socio-economic characteristics of the community.</em></p> Agustin Kurniasari, Dara Sakina, Muhammad Afif Wirdiyan Zaldi, Robert Kurniawan Copyright (c) 2026 https://journal.uii.ac.id/JSTL/article/view/42286 Thu, 01 Jan 2026 00:00:00 +0000