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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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INDONESIA
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 160 Documents
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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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Abstract

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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Abstract

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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Abstract

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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Abstract

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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Abstract

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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Abstract

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.
Identification of Phytoplankton Diversity at Cengkrong Tidal Creek, Trenggalek, East Java, Indonesia Andhani, Titis Dwi
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 2 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Phytoplankton is a key component that acts as a primary producer and bioindicator of changes in water quality. This study aims to identify phytoplankton species in Cengkrong Tidal Creek, Trenggalek, Indonesia. Sampling was conducted for six weeks at three stations representing the estuarine gradient. Parameters analyzed included phytoplankton abundance diversity index (H'), dominance index (D), and water parameters such as temperature, dissolved oxygen, pH, salinity, nitrate, and orthophosphate. The results of the study found five phytoplankton phyla, consisting of Bacillariophyta (70%), Chlorophyta (18%), Cyanophyta (6%), Dinoflagellates (3%) and Charophyta (3%). The Bacillariophyta phylum found 23 genera, Chlorophyta phylum found 6 genera, Cyanophyta phylum found 2 genera, Charophyta phylum found one genus, namely Mougeotia. The Dinoflagellate phylum found one genus, namely Amphidinium. The H' value ranges from 0.51 to 2.38, indicating low to moderate levels of diversity, while the D value ranges from 0.12 to 0.74, indicating low to high dominance. Water quality parameters generally still support phytoplankton growth, but nitrate and orthophosphate concentrations exceed the specified quality standards. Regular water quality monitoring, as well as preventing the entry of pollution sources into the waters, is necessary to avoid phytoplankton explosions that cause a decline in ecosystem quality.
Assessment of River Water Quality Using Pollution Index and Development of Pollution Control Strategies in the Petung River, Indonesia Dewi, Eliza Masita; Kurniawan, Andi; Anggayasti, Wresti Listu; Hasan, Muhammad Fathur Rouf; Wijayanto, Hari Wahyu
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 2 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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The Petung River supports domestic, agricultural, and economic activities in Pasuruan City but is subject to increasing anthropogenic pressures. This study aims to assess the river water quality status and formulate water pollution control strategies. Water quality was evaluated using the Pollution Index based on laboratory measurements conducted in April and June 2025. A SWOT analysis was performed by identifying internal and external factors through field observations and key informant interviews, followed by weighting and ranking to determine strategic priorities. The results indicate that the Petung River is predominantly classified as lightly polluted, with Pollution Index values ranging from 2.48 to 5.06, while one monitoring point in June 2025 reached a moderate pollution status. Although pH (6.75–7.80) and nitrate (1.15–3.40 mg/L) complied with Class II standards, total suspended solids, biological oxygen demand (6.49–16.01 mg/L), chemical oxygen demand, and total phosphate (0.27–3.03 mg/L) exceeded regulatory thresholds. The priority strategy is the establishment of communal wastewater treatment systems, supported by improved coordination, institutional capacity, community-based programs, and strengthened monitoring.
MITIGATION OF DAMAGE TO VANAME SHRIMP (Litopenaeus vannamei) GILL TISSUE DUE TO Vibrio parahaemolyticus INFECTION THROUGH THE IMMUNOSTIMULANT Spathoteredo obtusa FROM SIDOARJO, EAST JAVA Furqan, Andi Al
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 2 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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One mitigation strategy that can be implemented for shrimp infected with vibriosis is the administration of immunostimulants. However, the use of commercial immunostimulants derived from chemical compounds is a cause for concern due to potential long-term adverse effects. This study focuses on gill tissue damage, survival rates, and water quality. The objective of this study is to determine the effect of administering natural immunostimulants from S. obtusa on gill tissue damage, survival rate, and water quality in vanamei shrimp infected with the bacteria V. parahaemolyticus. The study was conducted using vanamei shrimp samples divided into 7 treatments, each containing 10 shrimp. The treatments consisted of administering S. obtusa immunostimulant at 300 ppm (A), 400 ppm (B), 500 ppm (C), 600 ppm (D), 700 ppm (E), positive control (K+) as a treatment without S. obtusa immunostimulant administered and infected with V. parahaemolyticus, and a negative control (K-) as normal shrimp. The lowest level of lamella fusion damage was 5%, and the highest was 30%. The lowest level of lamella fusion damage was 5%, and the highest was 70%. The highest survival rate was 90.00%, and the lowest was 56.67%. The results indicate that mitigation efforts using the immunostimulant extract of S. obtusa from Sidoarjo, East Java, have a significant effect
Multidimensional Sustainability Evaluation of Community-Based Material Recovery Facilities (TPS3R) and Strategies for Strengthening Regional Waste Management Systems: A Case Study in Mojokerto Regency SYUKRON, MOCHAMAD
Journal of Environmental Engineering and Sustainable Technology Vol 12, No 2 (2025)
Publisher : Directorate of Research and Community Service (DRPM)

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Mojokerto Regency faces a significant waste crisis, with the Tempat Pengolahan Sampah Reduce-Reuse-Recycle (TPS3R) program contributing a negligible 0.015% to regional waste reduction. This failure suggests deep-seated systemic barriers beyond physical infrastructure. This study aims to analyze the sustainability status of the TPS3R program and formulate an integrated optimization strategy to achieve financial autonomy and institutional support. A quantitative assessment using Multidimensional Scaling (MDS) via RAPFISH was employed on a "positive deviance" case study, TPS3R Trawas Berseri Berdikari. The results reveal a critical paradox: while Legal & Institutional (89.43) and Technical (85.51) dimensions are "Highly Sustainable," the facility suffers from fundamental "financial fragility" (Economic score 73.24) and "disconnected governance." Despite its status as a best-practice model, the facility relies on a Rp 5,000,000 monthly subsidy to cover operational deficits. To address this, the research formulates an Integrated Optimization Strategy that pivots from a project-based to a service-based model. Key strategies include (1) Economic Diversification through premium compost marketing to tourism sectors to secure financial independence, (2) Institutional Reform transforming the local government from a passive regulator to an active technical facilitator, and (3) Asset Revitalization to optimize stagnant technology. These findings provide a replicable roadmap for policymakers to revitalize failing infrastructure into autonomous social enterprises, contributing directly to SDG 11.

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