bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gadjah Mada University drinking water supply system TOYAGAMA life cycle inventory
Authors: Hutomo P , Marleni N N N , Kamulyan B 
Published: December 2023

Abstract
TOYAGAMA is the drinking water supply system (DWSS) of Gadjah Mada University. Acknowledging that its production operations have potential environmental and ecological impacts is essential. To ensure sustainable operations, comprehension of these impacts is necessary. The Life Cycle Assessment (LCA) has been reported to be an ideal method, but it has never been carried out, Life Cycle Inventory (LCI) is a vital preliminary step. Therefore, this study aims to construct an LCI database for the production of drinking water in TOYAGAMA DWSS, covering the process of raw water intake to treatment. This database could serve as a reference for future LCA studies involving similar technologies and as an overview of its potential impacts. The data collection methods included observation, literature review, and interviews. The collected data focus was carried out from September 26 to November 3, 2022. Organizing and processing were performed using Microsoft Excel and OpenLCA 2.0 Beta. The results showed that TOYAGAMA DWSS consisted of 15 unit processes and an additional 1 non-TOYAGAMA DWSS unit process was included in the LCI. Flows recapitulation showed that 15 environmental flows were involved. Evaluation using Life Cycle Impact Assessment (LCIA) method Environmental Footprint 3.0 indicated that the production of 1 m3 drinking water contributed to 12 of 28 potential impact categories. Based on the results, to produce 1 m3 of drinking water, 3.35293 MJ of electrical energy and 1.22723 m3 groundwater were required. Furthermore, plastic waste had the highest potential impact, with a total of 5 impacts.
Sustainability assessment of community-based wastewater treatment plant: case study of Semarang District, Indonesia
Authors: Nurmiyanto A , Ragawidya P S , Wantoputri N I , Fajri J A , Brontowiyono W 
Published: December 2023

Abstract
Current sanitation initiatives in Indonesia focus on community-based sanitation to promotes ownership and understanding of sanitation systems. However, the community has faced numerous challenges in maintaining the socio-economic and technical aspects of the community-based wastewater treatment system (CWWTP) in operation. This study aimed to identify and analyse the sustainability dimensions of CWWTP in Indonesia. In this study, a set of sustainability index (SSI) tools was proposed to evaluate the sustainability of CWWTP, which included environmental, social, economic, technological, and institutional aspects of the sanitation system. Rapid appraisal for fisheries (RAPFISH) method was adapted to evaluate the multidimensional scaling (MDS) approach within the proposed SSI. The applicability of developed SSI was demonstrated by evaluating the implementation of three CWWTP in Semarang district. Data was collected through direct observation, questionnaires, interviews, CWWTP design evaluation, and water quality analysis. Major findings indicated that Tegalsari CWWTP have higher sustainability index, while Pedalangan and Podorejo need to enhance technical efficiency, institutional structure, and community engagement. The leverage analysis identifies key performance drivers in the CWWTP management including operation & maintenance, user acceptance, O&M expenses, community involvement, and effluent water quality. This paper highlights adequate tools for sustainability assessments of CWWTP in Semarang district. Methodology and dissemination of the obtained results can be applied to other rural communities in Indonesia.
Performance of trembesi seed (Samanea saman) on tempeh wastewater treatment (a case study in Semanan Tempeh Industry), West Jakarta
Authors: Syerin L A , Aphirta S , Astono W 
Published: December 2023

Abstract
Tempeh wastewater contains organic matter, TSS, and high turbidity, which negatively impact if discharged directly into water bodies. The use of biocoagulant from trembesi seeds to treat wastewater is considered more environmentally friendly, easy to find, and affordable. The purpose of this research is to determine how effective trembesi seeds are as a coagulant in removing turbidity, Total Suspended Solid (TSS), Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD) from tempeh wastewater in a batch-stirred reactor. Jar test with dose variations of 10-700 mg/L, finding the optimum stirring duration for coagulation at 200 rpm with time intervals of 1-3 minutes and for flocculation at 80 rpm with time intervals of 15, 30, and 45 minutes. The findings show that using a coagulant concentration of 500 mg/L resulted in a 63% reduction in turbidity. The optimum coagulation duration is 2 minutes and flocculation is 30 minutes. BOD initially at 1,245 mg/L decreased by 78% to 273 mg/L. COD initially at 6,400 mg/L decreased by 40% to 3,840 mg/L. TSS initially at 609 mg/L decreased by 66% to 205 mg/L. The percentage of allowance for BOD, COD, TSS, and turbidity using a reactor is 68%, 35%, 58%, and 70%. From these results it can be said that trembesi seed coagulant is effective in removing BOD, COD, TSS, and turbidity in tempeh wastewater.
Treatment of palm oil mill effluent using modified rotating biological contactor with organic loading rate variations
Authors: Adam M S , Nugrohoputri A S , Rahmadi R , Astuti A D , Kurniawan A 
Published: December 2023

Abstract
Indonesia is the world’s largest producer of palm oil or Crude Palm Oil (CPO). Palm oil production generates Palm Oil Mill Effluent (POME), which can harm the environment, if not properly treated. Untreated POME, with high Chemical Oxygen Demand (COD) levels, can lead to environmental degradations. Its high organic content and low acidity levels can also cause water pollution. This study modified the Rotating Biological Contactor (RBC) unit to treat POME, increasing the contact surface area between POME and microorganisms. It aimed to analyse the performance of the modified RBC unit, based on variations in organic loading rate (OLR). The study was conducted at a laboratory scale, with 2, 5, and 7 kgCOD/L/day organic loads. The results of this study revealed the highest percentage of removal obtained at an OLR variation of 7 kgCOD/L/day, with a removal rate of 70% for chemical oxygen demand (COD) concentration and 57% for ammonia concentration. Based on the research, the COD removal for organic loads of 7 kgCOD/L/day and 5 kgCOD/L/day decreased to 1900 mg/L and 2600 mg/L, respectively. Thus, the modified RBC unit would be more efficient with an organic load of 7 kgCOD/L/day. However, the COD concentration still did not comply with the water quality standards. Therefore, integrating the modified RBC unit with pre-treatment units, such as coagulation-flocculation, is necessary to achieve optimal effluent concentrations.
The effect of hydraulic retention time on stabilisation unit in anaerobic – contact stabilisation (A-CST) for treating palm oil mill effluent
Authors: Kenannita  , Ajie O W P , Nauval D , Astuti A D , Kurniawan A 
Published: December 2023

Abstract
The increased use of palm oil in Indonesia has triggered an increase in the quantity of Palm Oil Mill Effluent (POME). The contents of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), as well as oils and grease in palm oil mill effluent, need to be reprocessed, in accordance with the provisions of the Ministry of Environment Regulation No. 5 of 2014, concerning Wastewater Quality Standards, before being discharged into water bodies. In this study, a modification of the treatment unit involving the integration of suspended growth and attached growth in anaerobic and aerobic processes, known as Anaerobic – Contact Stabilisation (A-CST) unit, was conducted to reduce the high concentration of organic matter in POME. This modification can shorten the detention time and reduce the land usage for treatment. The objective of this research was to analyse the performance of the modified A-CST system, based on variations in the detention time and modelling the estimation of biokinetics under unsteady-state conditions, through numerical analysis, statistical tests, and model validation. The research focused on the stabilisation unit, with variations in Hydraulic Retention Time (HRT) of 6 hours, 5 hours, and 4 hours. The results of this study revealed that, the highest percentage of removal was obtained at an HRT variation of 6 hours, with a COD 88%.
Evaluation of municipal solid waste transportation and cost analysis: case study in Banyuwangi Regency
Authors: Dinanti A K , Dhokhikah Y , Badriani R E , Ishak S Z 
Published: December 2023

Abstract
Population growth in Banyuwangi Regency reached 0.61% BPS Banyuwangi Regency, 2022) with waste generation reaching 1,963,033.98 m3/year. Only 13% of the waste that is transported to the Temporary Disposal Site, TDS (RPJMD, 2021) is generated in Banyuwangi Regency in 2022; its waste generation in 2022 is 5378,2 m3/day with existing transportation using 17 units of dump trucks and 5 units of arm-roll trucks. The aim of this paper is to evaluate the most effective and optimal waste transportation system and estimate vehicle operating costs. The research methods were field studies and interviews with staff, drivers, and waste workers. The main information needed is the distance between the TDS and landfill sites locations, the time between locations, and the operating time of the waste trucks. The results showed that the amount of waste transported daily was 211.89 m3/day with a proportion of 4%. Optimization is carried out by setting aside distances on eight dump truck routes using the nearest-neighbor method with the R algorithm. Based on optimization, the distance reduction achieved by sorting eight dump truck routes reaches 102.95 km. In Banyuwangi Regency, the average daily vehicle operating costs for waste transportation are IDR 625,600 for arm roll trucks and IDR 3,325,200 for dump trucks. The average vehicle operating cost per year for 5 arm-roll trucks and 17 dump trucks reaches IDR 4,277,304,940.
Combining Landsat, VIIRS Night-time Light, and Sentinel-1 SAR for Spatial Flood Risk Assessment in Coastal Area: an Earth Engine Cloud Computing Process
Authors: Siddiq Amar , Sejati Anang W. 
Published: December 2023

Abstract
The intensity of development in coastal areas stimulates various potential issues such as flood disasters. This study aims to demonstrate the importance of latest methods and geospatial data as inputs for coastal spatial planning policies in efforts to reduce flood disaster risks. Leveraging spatial analysis with cloud computing through Google Earth Engine (GEE), this research assesses flood risk components—hazards, vulnerability, and capacity. The method involves processing SAR Sentinel-1 data to map flood inundation as a representation of hazards, analyzing Landsat and WorldPop data to evaluate vulnerability, and assessing capacity by utilizing VIIRS nighttime light level imagery to determine economic activities. The chosen research study location is the coastal area of Pekalongan due to frequent flood disasters throughout the year. The results demonstrate that cloud computing is capable of assessing flood risks. The flood inundation model using SAR data covers an area of 2,780 hectares with an accuracy of 96.75%. The analysis also reveals the highest vulnerability level, reaching 15.7% (946.32 hectares) of the total area. The capacity analysis indicates a medium to high level of 15% (913.6 hectares). The assessment of flood risks in the coastal area is dominated by the medium to very high-risk class, covering 43% (2,631.84 hectares) of the area. In conclusion, integrating cloud-based flood risk modeling into spatial planning is crucial, considering disaster resilience for sustainable human habitats.
Strengthening City Branding Through Investment in Ambarawa Urban Area, Semarang Regency
Authors: Yesiana Reny , Septiarani Bintang , Astuti Khristiana D. , Anggraini Pratamaningtyas , Pardcipta Jihan S. , Pradana Gilang A. , Pandie Amedeus R. 
Published: December 2023

AbstractCity branding can shape an area’s positioning and marketing differentiation so that a city can build a clear identity and strong associations and instil positive attributes to compete with other cities, especially for tourism. The primary purpose of city branding is to increase tourists and foster a good perception of the area. Ambarawa Urban Area is part of strategic National Kedungsepur (province) for social and cultural focus. The development of this area aims to create a historical city area that becomes the centre of tourism development. Tourism development also requires support from investors. Investment is important because it can also provide social benefits to the community. Therefore, this article aims to determine investment locations to strengthen the city branding of the Ambarawa Urban Area. The data used in this research are secondary and primary. Secondary data includes land value, road network, land use, and hazard map. The validation of land use data and road networks is carried out using the ground check. The variables used in the analysis are land value, ease of accessibility, and availability of land that can be developed for construction. The analysis techniques used are kernel density and overlay mapping such a conservation area, limited development land and tourism location. The processing map using Geographic Information System (GIS) mapping software. This research resulted in investment locations in several villages, such as Baran, Kupang, Lodoyong, Ngampin, Panjang and Tambakboyo with a total area of 19.14 hectares. The largest investment location can be allocated in Panjang Village which has an area of 9.79 hectares and is spread across two locations.
Spatio-Temporal Analysis on Land Use/Land Cover Change in Banda Aceh: A Preliminary Study of Disaster Resilience
Authors: Senjana Suci , Handayani Wiwandari , Suprapti Atik 
Published: December 2023

Abstract
The devastating tsunami that struck Banda Aceh resulted in profound destruction to both its built environment and natural areas. The city’s urban infrastructure suffered extensive damage, with essential zone being severely affected. Despite these challenges, the population of this tsunami-prone city has continued to increase steadily over time. This research examines the land use/land cover (LULC) in Banda Aceh following the 2004 Indian Ocean Tsunami through spatio-temporal analysis, with a particular focus on investigating urban growth trends through the examination of built-up areas. The study seeks to discern the evolving patterns of land use and land cover transitions over this period, shedding light on the transformative processes associated with urbanization and its consequent impact on the landscape. The insights obtained from this research can inform urban planners, policymakers, and disaster management authorities in devising effective strategies for urban growth in coastal front cities that vulnerable to tsunami.
Utilization of GIS for Adaptation Pattern on Community of Drought Disaster in Kaliori District, Rembang Regency
Authors: Sari Ayu N. , Widyasamratri Hasti 
Published: December 2023

Abstract
The adaptation process carried out by individuals or communities in counfront of drought forms an adaptation pattern. This research focuses on adaptation to domestic and agricultural water needs. The drought disaster in Kaliori is a hydrological drought where there is a shortage of surface water and groundwater, areas affected by drought occur in 20 of 23 villages in Kaliori. The goals of this research is to determine the adaptations made by the community in facing drought disasters. This research using a mixed method of quantitative and qualitative with primary data collection methods are interviews, questionnaires, Focus Group Discussion (FGD), and utilize GIS processing. The results is the dominant adaptation patterns is (1) Buying tank water from other districts for people with middle-high economic class, (2) Buying conducting water for IDR 2,000 from the District Lasem for people with a lower economy, (3) Prioritizing need for water for daily needs and drinking water for livestock, (4) Selling or renting paddy fields for farmers who do not have sufficient capital to work on the fields, (5) Switching professions to sectors other than agriculture, such as turning into fishermen and porters in the coastal area of Kaliori District; (6) Coastal communities who work as salt farmers benefit from the drought disaster because it results in higher salt production; and (7) Lowland people who work as farmers adjust the types of crops from rice to sugar cane, corn, beans, chilies, cassava, and other that can withstand hot weather.
Geospatial and Temporal Analysis of Temperature-Humidity Index (THI) as Climate Mitigation Tool in Glamping Site in Cimahi North, West Java, Indonesia
Authors: Prihandrijanti Maria , Azzizi Vidya T. 
Published: December 2023

Abstract
Climate change on a global scale is an urgent matter with far-reaching consequences, making tourism among the most susceptible sectors to the effects of changing climate patterns. Ensuring human comfort in environments with high outdoor activity demands is a crucial aspect of design. This is particularly relevant for nature-based accommodations, often found in rural, mountainous, or coastal areas, catering to urban residents seeking recreational experiences. This study aims to explore the utilization of the Temperature-Humidity Index (THI) in both geospatial and temporal context in glamping site in Cimahi North, Indonesia, as a strategy for climate mitigation. Temporal microclimate assessment was first conducted through temporal thermal comfort analysis, using criteria such as air temperature (Ta) and relative humidity (RH), followed by geospatial analysis (Hotspot Analysis) in GIS to put the THI into spatial context. Result indicates that there are variations in daily THI assessment, where both temperature and humidity play important role in determining the thermal comfort of glamping clients. Subsequently, the study introduces strategies for climate mitigation in the planning of glamping tourism sites. The practical implications of this research lie in its potential to enhance the planning of nature-based tourism sites, particularly those dedicated to glamping experiences.
Using Geospatial Information for Sustainable Small Farm and Dairy Processing Cluster Development of Community-Based in a Small City of Indonesia
Authors: Tyas Wido P. , Damayanti Maya , Rizqiati Heni , Wahyono Hadi , Lisanti Renesia N. R. A. , Fajri Claudya G. A. , Atika Anisa N. , Sumarni Ely 
Published: December 2023

Abstract
Cluster development based on community participation is one way to increase farmers’ income. The cow-milk processing cluster is one of the promising clusters in Salatiga City. Dairy cow’s milk is a well-known product in Salatiga City, including in Kumpulrejo Area/Kelurahan. Kumpulrejo Area has various dairy products, including cheese, chips, and ice cream. However, the production of dairy products could be more sustainable, but only by consumer demand. Another obstacle is the need for more marketing and sales facilities from business actors to market existing dairy products, and the presence of COVID-19 and Foot and Mouth Diseases also impacts production activities. A dairy product processing cluster in Kumpulrejo Area is an effort to increase the economic value chain of business actors for dairy products in Kumpulrejo Area. This study analyzes the master plan of the area by using geospatial information. The master plan document is vital in the development of this cluster by involving the participation of the Kumpulrejo Area community, in this case, the Farmers Groups, which is the main subject of the Community Action Plan (CAP), through community discussion activities (CAP Workshop/FGDs). Before the process, it was previously conducting field observations, interviews, and distributing questionnaires in Pre-CAP. The observation determines the condition of dairy cow’s milk production activities in Kumpulrejo Area. In addition to gaining participation from the community, other stakeholders, such as local government and academics, also play a role in preparing the master plan document. The realization of the milk processing cluster in Kumpulrejo Area is expected to improve the income of the community in Kumpulrejo Area.
Urban Ecological Security Assessment Based on Sentinel-2A and Landsat 8 Image Data: A Case Study in Surakarta City and its Surroundings
Authors: Indrawati Like , Fatchurohman Hendy 
Published: December 2023

Abstract
A healthy ecosystem is the foundation of social and economic development. It is crucial to conduct ecological security assessments in rapidly urbanizing areas. Surakarta City is one of the cities in Central Java undergoing significant growth, driven by an increasing population year by year. This has led to changes in land use accompanied by shifts in environmental quality. This research aims to assess the urban ecological security of Surakarta City and its surroundings using remote sensing technology from satellite systems. The research methodology employs Sentinel-2A and Landsat 8 TIRS imagery to extract indicators of urban ecological security. The modeling method utilizes Principal Component Analysis (PCA). The findings of this study provide the distribution of urban ecological security levels within the research area.
The Spatial Planning in Purworejo Regency-based Flood Hazard using Sentinel-1A Imagery
Authors: Pangi Pangi , Rohman Farid N. , Mispaki Syachril W. 
Published: December 2023

Abstract
Flood disasters in Indonesia increased by 23% over a period of 70 years. In Central Java Province, the incidence of floods has also experienced a significant increase, including flooding in Purworejo Regency. Floods in Purworejo Regency occur in almost every rainy season in the same location. In 2020 and 2021, floods hit the same 13 villages. The utilization of the Sentinel-1A Imagery technology can quickly and accurately visualize the distribution of locations where there are indications of flood inundation. This research aims to do rapid flood mapping for spatial planning. The method used in this research is the processing of Sentinel-1A imagery, flood mapping in Purworejo Regency, validation test of processed Saentinel-1A imagery, and flood analysis with the Purworejo Regency Spatial Planning. The Sentinel-1A data processing is in the form of a combination process between Composite RGB and the Change Detection and Thresholding (CDAT) method. Sentinel-1A imagery was taken at two different times, namely when there was a flood and when there was no flood. The Flood Map Processed by Saentinel-1A imagery will be verified and validated. The validity test results using the Kappa coefficient are 0.841, and the accuracy value is 94%. The Kappa coefficient value and accuracy show that the flooding results from the Saentinel-1A image processing are valid and accurate. The results of the analysis between spatial planning and flood inundation in Purworejo Regency are > 50% of the flooded areas in the form of paddy fields and plantations.