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Renanda Baghaz Dzulhamdhani Surya Putra
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Direktorat Riset dan Pengabdian kepada Masyarakat (DRPM), Lantai 7, Universitas Brawijaya Jl. Veteran Malang, 65145, Jawa Timur, Indonesia
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Journal of Environmental Engineering and Sustainable Technology
Published by Universitas Brawijaya
ISSN : 23563109     EISSN : 23563117     DOI : https://doi.org/10.21776/ub.jeest
Core Subject : Science, Social, Engineering,
Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Environmental Science Mechanical Engineering
JEEST is an interdisciplinary and refereed journal, addresses matters related to environmental engineering and sustainable technology. Its range of themes encompasses ecological studies, field research, empirical work and descriptive analyses on topics such as environmental systems, environmental policies and politics, environmental legislation, environmental impact assessment, air, water and land pollution, water and energy related issues, engineering innovations, development, technical solutions and sustainability technology. Other matters related to or which influence the international debate on sustainability will be also considered.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 10 Documents
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Search results for , issue "Vol 12, No 1 (2025)" : 10 Documents clear
ASSESSMENT OF TWO-WHEELED VEHICLE EMISSIONS IN THE VICINITY OF THE ENVIRONMENTAL ENGINEERING DEPARTMENT, UNIVERSITAS TADULAKO, INDONESIA Maulida, Fatimah; Mawaddah, Nurul; Zurfi, Alfian; Prayogo, Wisnu; Nur, Aulia Mustaqiman
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Abstract

Two-wheeled motor vehicles are a major source of urban air pollution. This study investigates the emissions of carbon monoxide (CO) and hydrocarbons (HC) from motorcycles operating within the Environmental Engineering Department of Universitas Tadulako. Emission data were collected using direct measurements with an automotive emission analyzer across various motorcycles differing in age, fuel type, and engine condition. The findings reveal that, although the average emission levels generally meet the national standards (Ministerial Regulation No. 8/2023), motorcycles using lower-grade fuel (Pertalite) emit higher concentrations of CO and HC compared to those using higher-grade fuel (Pertamax). Furthermore, both CO and HC emissions increase with the age and mileage of the vehicle. The correlation analysis indicates that older vehicles and those with higher mileage tend to release more pollutants due to reduced engine efficiency. These results underscore the importance of regular vehicle maintenance, the use of higher-quality fuels, and awareness campaigns to reduce air pollution on campus. The study supports the development of environmentally friendly transportation policies within educational institutions. ASSESSMENT OF TWO-WHEELED VEHICLE EMISSIONS IN THE VICINITY OF THE ENVIRONMENTAL ENGINEERING DEPARTMENT, UNIVERSITAS TADULAKO, INDONESIA
UNLOCKING THE INDUSTRIAL POTENTIAL OF MALOY BATUTA SEZ: A POLICY AND ECONOMIC PERSPECTIVE USING LQ AND SHIFT-SHARE ANALYSIS Yusniar, Lely; Wicaksono, Agus Dwi; Prayitno, Gunawan
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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The Maloy Batuta Trans Kalimantan (MBTK) Special Economic Zone (SEZ) in East Kutai Regency has significant potential for developing industries based on natural resources, particularly in palm oil and minerals. This study aims to assess the potential of leading sectors and evaluate the effectiveness of the MBTK SEZ development policy using a policy analysis approach, Location Quotient (LQ), and Shift Share analysis. The findings indicate that both national and regional policies have supported the growth of local resource-based industries; however, their implementation has not been optimal due to low investment levels and inadequate infrastructure. This study recommends aligning cross-sector policies, accelerating the provision of essential infrastructure, and implementing industrial clustering strategies to enhance the competitiveness of the MBTK SEZ.
HOTATE SCALLOP (MIZUHOPECTEN YESSOENSIS) FARMING USING MIMIZURI AT SUZUKI TOSHIHIKO TOYOURA COMPANY, HOKKAIDO, JAPAN Burhanudin, Burhanudin; Mardika, Hanisya Putri Kania; Sujadi, Frentina Murti; Anjaini, Jefri
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Japan is an archipelagic country with numerous marine commodities of high economic value. One of the most popular marine products among the Japanese population is the Hotate scallop (Mizuhopecten yessoensis). Hotate scallops are a type of shellfish that thrive in low-temperature environments, with their natural habitat commonly found in the northern seas of Japan, particularly in Hokkaido. Suzuki Toshihiko Company, located in Toyoura, Hokkaido Prefecture, is one of the companies engaged in the Hotate scallop industry. This study was conducted to examine the Mimizuri cultivation technique used by Suzuki Toshihiko Company. The study are divided into 3 methods ; the first method include observation; the second active participation, and the third method interview to collect primary data, while secondary data were obtained from relevant literature. The Mimizuri technique is a method of cultivating Hotate scallops by attaching them to a rope and raising them in the open sea. This technique involves several stages, starting with seed collection, seed sorting, the mimizuri stage, and finally the large-scale harvesting stage
ASSESSMENT OF MANGROVE DIVERSITY, BIOMASS, AND CARBON STOCKS IN THE UJUNGPANGKAH ESTUARY, GRESIK Fathah, Aulia Lanudia; Semedi, Bambang; Wardana, Fitri Candra; Isdianto, Andik
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Mangrove ecosystems are recognized as vital blue carbon reservoirs that contribute significantly to climate regulation through biomass-based carbon storage. This study assessed mangrove diversity, structure, biomass, and carbon stocks in two key locations: Banyuurip Mangrove Center (BMC) and Lewean Mangrove Park (LMP), located in the Ujungpangkah Estuary, Gresik. Data were collected from 15 rectangular plots (10 × 10 m) to determine species composition, tree density, Importance Value Index (IVI), above and belowground biomass, and estimated carbon stocks using standard allometric equations. A total of 12 mangrove species were identified, with Avicennia marina emerging as the dominant species in all growth stages across both sites. Tree density varied from 100 to 1,600 trees/ha, reflecting stages of regeneration rather than degradation. The highest IVI values were recorded for A. marina (196.3% in BMC; 146% in LMP). Total biomass and estimated carbon stock were higher in BMC (340.48 Mg/ha; 164.87 Mg C/ha) compared to LMP (125.67 Mg/ha; 56.20 Mg C/ha), primarily due to differences in species dominance and stand maturity. These results underline the ecological and climate mitigation significance of maintaining mangrove diversity and biomass. The study supports the integration of mangrove conservation into blue carbon strategies for sustainable coastal management, and recommends strengthening local restoration initiatives based on dominant species performance.
TERRITORIALITY IN THE UTILIZATION OF POST-REVITALIZATION KAYUTANGAN CORRIDOR Ramadhanty, Fakhita Aulia; Asikin, Damayanti; Santosa, Herry
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Kayutangan Street Corridor in Malang City is a historical area that has been revitalized since 2020, aiming to revive its identity as a heritage public space as well as a commercial corridor of the city. After revitalization, the area's pedestrian path has experienced an increase in function and activity, but it also raises new problems in the form of overlapping spatial use and territorial behavior by various user groups. This study aims to identify the pattern of utilization and territoriality of pedestrian paths formed in the Kayutangan corridor after revitalization. The method used is qualitative descriptive with data collection techniques in the form of placed centered mapping and photography surveys, which are carried out in three corridor distribution zones. The results of the study show that pedestrian paths are used not only for pedestrian mobility, but also social, informal economy, and cultural activities. It was found that there was an overlap of functions on the pedestrian path which eventually formed various kinds of territories, namely the primary territory by the owner of the shop/building, the secondary territory by informal traders, and the public territory by pedestrians and temporary visitors. This phenomenon indicates the existence of spatial conflicts and need for more inclusive space management. The conclusion of this study emphasizes the importance of managing public spaces that are sensitive to social dynamics so that the function of pedestrians as an inclusive urban space can be maintained.
SEASONAL DYNAMICS OF ENSO IMPACT ON SEA SURFACE TEMPERATURE VULNERABILITY IN THE MADURA STRAIT COAST, INDONESIA Widagdo, Supriyatno; Semedi, Bambang; Firdaus, Muhamad
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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The El Niño-Southern Oscillation (ENSO) is a dominant climate phenomenon affecting the global oceanographic system; however, understanding of the seasonal variability of its impact on semi-enclosed waters, such as the Madura Strait, remains limited. This knowledge gap is crucial because the Madura Strait has complex bathymetric characteristics and is a strategic area for coastal economic activity in Indonesia. This study aimed to analyze the seasonal dynamics of ENSO's influence on coastal vulnerability in the Madura Strait. The study used secondary CMEMS data for sea surface temperature, salinity, and chlorophyll-a for the period 2019-2024, covering neutral, El Niño, and La Niña phases. The analysis was conducted using Ocean Data View spatial visualization, descriptive statistics, and hierarchical cluster analysis, dividing the region into three geographic zones: western, central, and eastern. ENSO exhibits a varying seasonal influence with a bimodal pattern correlated with the monsoon cycle. Sampang emerged as a vulnerability hotspot with an extreme anomaly of -1.4°C. The western zone exhibits high resistance, the central zone is most responsive, and the eastern zone is highly vulnerable. El Niño dominated the three seasons, whereas La Niña dominated the early transitional season. The coastal vulnerability of the Madura Strait to ENSO is spatially and temporally heterogeneous, with distinct zoning. These findings provide a scientific basis for zoning-based adaptation strategies and early warning systems in Indonesia's strategic coastal areas.Keywords: ENSO, seasonal variability, coastal vulnerability, Madura Strait
CARBONIC ANHYDRASE, GROWTH, AND MOLTING OF MUD CRABS (Scylla sp.) GIVEN SPINACH (Amaranthus sp.) EXTRACT Sutrisno, Bagas Gagat Rahina Asihing; Hertika, Asus Maizar Suryanto; Supriatna, Supriatna
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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This study aimed to evaluate the effect of spinach (Amaranthus hybridus) extract containing phytoecdysteroids on molting duration, growth performance, feed efficiency, and carbonic anhydrase (CA) enzyme activity in mud crabs (Scylla sp.) reared in a Crab Apartment Box (CAB) system. A Completely Randomized Design (CRD) was applied with four levels of spinach extract doses (0, 300, 700, and 1000 ng/g body weight) and three replications. The results showed that the administration of spinach extract significantly shortened molting duration, with the highest dose (1000 ng/g) reducing the average molting period to 11.83 days compared to 39.17 days in the control group. Although absolute weight gain decreased at higher doses, specific growth rate (SGR) and feed efficiency improved, and feed conversion ratio (FCR) declined. While weight gain percentage slightly decreased at higher doses, overall metabolic efficiency improved. Enzymatic analysis revealed that CA activity peaked at 300 ng/g, suggesting optimal ionic regulation during post-molt recovery at this dose. However, higher doses caused a decline in CA levels, potentially due to regulatory feedback or physiological stress. These findings demonstrate the potential of spinach extract as a natural molting accelerator and physiological modulator in soft-shell crab production.
MORPHOLOGICAL COMPARISON OF Hampala macrolepidota (Cyprinidae: Hampala) FROM SEVERAL POPULATIONS IN EASTERN JAVA Amalia, Elok; Harahap, Muhammad Alfiandi Rachmad; Sufaichusan, Ifa; Dailami, Muhammad; Widodo, Maheno Sri; Faqih, Abd Rahem; Kusuma, Wahyu Endra
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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The potential of freshwater fisheries in local species such as hampal fish (Hampala macrolepidota) presents several research gaps, particularly in specific localities. Research on H. macrolepidota in East Java may serve as a foundation for future management and development of local species, especially given that H. macrolepidota aquaculture is rarely carried out. Morphological studies based on meristics and morphometrics can be used for broodstock selection in H. macrolepidota domestication efforts. In this study, 21 Hampala specimens were assessed based on morphometrics and meristics, and analysed using a significance test, PCA and dendrogram. The analysis results by PCA and dendrogram showed morphometric differences in the Probolinggo and Banyuwangi populations compared with the four Brantas River populations. In contrast, based on meristics, the entire population does not show apparent differences based on the population. The clear differences demonstrated in the Probolinggo and Banyuwangi populations morphometrically indicate local adaptation due to differences in water conditions.
GREEN INFRASTRUCTURE PLANNING: POTENTIAL SITES FOR NEW TDS 3R IN PANGKALAN KERINCI Tsania, Tengku Annisa; Meidiana, Christia; Agustin, Imma Widyawasti
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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The population growth and increasing domestic activities in Pangkalan Kerinci District have led to a significant rise in waste generation. However, the existing waste collection system remains inadequate, with only one Temporary Disposal Site (TDS) serving a limited area. This study, conducted from September 2024 to June 2025, employed a quantitative approach using both primary and secondary data. The analytical method applied was spatial overlay in a Geographic Information System (GIS), incorporating five variables: land availability, slope, road network accessibility, riverbank buffer zones, and settlement distance. The results indicate that although most areas meet the criteria for slope (98%), riverbank buffer zones (99%), and settlement distance (84%), only 556.03 hectares are classified as fully suitable when all criteria are overlaid, primarily due to limited land availability. These findings highlight the importance of integrated spatial planning in determining waste management facility locations and provide a reference for local governments to strengthen sustainable waste management infrastructure. The results further suggest the need for local government involvement in following up on this mapping with policies on land acquisition and the development of integrated TDS 3R facilities.
VARIOUS SALINITY EFFECTS ON NILE TILAPIA SEEDS (OREOCHROMIS NILOTICUS) GROWTH RATE IN ARTIFICIAL SEAWATER Satiti, Cinca Hayyu Putri; Faqih, Abd. Rahem; Mahmudi, Mohammad
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 1 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Nile tilapia (Oreochromis niloticus) is a euryhaline fish that can live in both freshwater and brackish waters. This research aims to determine the optimal salinity for the growth of Nile tilapia in an effort to revitalize abandoned ponds in the coastal areas of Java Island, Indonesia. The research was conducted at the Laboratorium Perikanan Air Tawar Sumberpasir Malang. The salinity treatments given were 0 ppt (control), 7 ppt, 14 ppt, and 21 ppt. The parameters observed include Absolute Growth, Specific Growth Rate, Feed Conversion Ratio (FCR), and water quality. The results show that the best Absolute Growth in Weight and Length occurred at the 7 ppt treatment with values of 8.82±0.40g and 2.45±0.16 cm. The best Specific Growth Rate for weight and length in the 7 ppt treatment were 97±0.07% and 67±0.08%, respectively. The best feed conversion in the 0 ppt treatment (1.28±0.49%). The water quality in this study was already optimal according to the Quality Standards for Nile Tilapia Farming in Indonesia.

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