bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cooling capacity assessment in Karet Tengsin Platinum Integrated Area
Authors: Mumtaz L Z , Atianta L , Kustiwan I 
Published: December 2023

Abstract
The increasing trend of urbanisation has resulted in land use changes and increased urban activities, which led to the emergence of the Urban Heat Island (UHI) phenomenon. The readiness of urban design and planning in mitigating UHI becomes crucial, to reduce the demand for cooling energy and enhance productivity. This study aimed to calculate the cooling capacity index of the Karet Tengsin Platinum Area design, using InVEST 3.12.1, based on shading, evapotranspiration, albedo, and distance from cooling islands, and it has a range of 0-1. The index was further analysed, using the kernel density method, to examine the spatial density patterns to identify the priority features that need to be intervened to mitigate UHI in the Area. The research findings show that, the Karet Tengsin Platinum Area design has a cooling capacity index ranging from 0.22 to 0.83, dominated with a low index value, below 0.3, indicating that, this area has poor cooling capacity. Low index values are distributed in built-up areas, which show that, the materials used in built-up areas need to be prioritised as features that need to be intervened to enhance the cooling capacity. Additionally, this study also discusses urban cooling strategies, through other features that are less explored in the modelling. This study method can be used as a reference for urban designers in integrating urban cooling approaches, as UHI mitigation strategies, in urban area planning and design.
Beyond traffic jams: public perceptions of Jabodetabek Commuter Line (KRL) System for sustainable urban development
Authors: Hidayati I 
Published: December 2023

Abstract
Jabodetabek Commuter Line (KRL) is an essential transportation infrastructure that connects the city’s suburbs with the central business district. Despite the system’s expansion in recent years, there needs to be more research on how the public perceives the KRL system as a sustainable transportation option and how these perceptions might influence the system’s effectiveness in achieving sustainable urban development goals. This study aims to understand how Jabodetabek residents perceive the KRL system as a sustainable transportation option. The method of this study is qualitative research with in-depth interviews. The study found that Jabodetabek residents perceive the KRL system as a sustainable transportation option for their daily needs. The participants identified several positive aspects of the KRL system, including its affordability, convenience, and environmental friendliness. However, the study also revealed negative perceptions, such as safety concerns and limited connectivity. Positive perceptions of the KRL system can lead to increased usage and greater support for sustainable transportation policies, whereas negative perceptions can have the opposite effect by reducing usage and decreasing support for sustainability initiatives. These findings indicate the importance of understanding the public’s perception of sustainable transportation options in achieving sustainable urban development goals. These insights inform sustainable transportation policymaking and contribute to global knowledge about sustainable cities and communities.
Study of Trans Siginjai shelter coverage on corridor I and II in Jambi City of Indonesia
Authors: Setiawan M A , Adriana M C , Sitawati A 
Published: December 2023

Abstract
In order to meet mobility needs and prevent congestion, the government introduced and began operating Trans Siginjai Jambi in 2017. The low load factor value, however, indicates that its utilization is currently not optimal in supporting the mobility of people in Jambi City. Bus Rapid Transit (BRT) is a closed transportation system, which bus shelters is become one of the main infrastructures to support its operation. The lack of bus shelters will influence the bus accessibility and the number of passengers. Therefore, the aim of this study is to examine how bus stop services of Trans Siginjai have served community movements in Jambi City’s Corridor I and Corridor II. Comparative descriptive analysis and geographical analysis are utilized in this study to perform coverage analysis. The findings of this investigation demonstrate that up to 8 stops in Corridor I and up to 10 stops in Corridor II fail to adhere to the distance requirements. Trans Siginjai only cover 16.99% of the area and only 21.18% of residential areas along the both corridors. In order to improve the accessibility, more bus stops are required, especially in the dense settlement area.
Long-term analysis on determination of deoxygenation rate of urban river water
Authors: Yustiani Y M , Wahyuni S , Nuraprilia F , Nurkanti M 
Published: December 2023

Abstract
Water quality modeling is one approach in developing river management strategies. The deoxygenation rate is an important coefficient in the water quality of rivers modeling. This study aims to obtain a coefficient of deoxygenation rate using long-term method that can represent the condition of urban rivers with high levels of pollution. The study location was the Cikapundung River, which runs through Bandung, Indonesia. The method used to determine the rate of deoxygenation is long term, with an analysis period of 30 days in the laboratory. The Slope Method and empirical equations from Hydroscience were used to process the data. The results showed that the deoxygenation rate ranged from 0.230 to 0.291 per day. The value of the deoxygenation rate ranges from 0.40 to 0.81 per day using the Hydroscience empirical equation. The overall biochemical oxygen demand Ultimate (La) ranged from 62.03 to 77.18 mg/L. The deoxygenation rate value obtained using the long-term method shows a relatively higher result than the value obtained using the short-term time range. The long-term method is better than the short-term method because the results obtained from the long-term method are closer to the results of the empirical equation.
Water usage pattern of peri-urban community in the river basin: analyzing crucial variables for human exposure model
Authors: Utami R R , Yoga G P , Geerling G W , Salami I R S , Notodarmojo S , Ragas A M J 
Published: December 2023

Abstract
The human exposure model (HEM) is an important tool to predict the amount of contaminants carried by water to the community. Proper input variables play a crucial role in running the HEM, which is often scarce, particularly in low- and middle-income countries like Indonesia. To overcome that problem, we conducted a water demand survey of 10 water-related activities in a peri-urban community of the Upper Citarum River Basin. The survey resulted in three main variables of the exposure model from those activities, i.e. frequency, volume, and duration. This study aims to analyze if the contaminant uptakes from the HEM output were significantly different between groups (i.e.: male and female groups, 18 – 65 y.o. and ≥ 65 y.o. groups) and which exposure routes and water-related activities contribute the most to the contaminant’s total uptake by using statistical and proportional analysis. The output of carbofuran deterministic modelling showed the average total uptake was 1.06.E+00 ng/kg/day. The statistical analysis revealed a significant difference between oral and dermal uptake, but there was no significant difference in total uptake between gender and age groups. After conducting the proportional analysis, it was found that oral uptake contributed almost 99% to the total uptake of carbofuran. The analysis also showed that drinking and cooking were two activities contributing the most to the total uptake. This study’s results are necessary for health risk assessment and HEM development, especially in the field of river basin management.
Social imaginaries methods and socio-engineering competences in sustainable river management (a case study in the living lab Upper Citarum)
Authors: Roosmini D , Witteveen L , Mayangsari I D , Nastiti A , Botden T 
Published: December 2023

Abstract
The Living Lab approach has become popular and developed in the past decade. It could provide a configuration to pursue a shared vision of integrated water resources management of the Citarum River in West Java - Indonesia. The multi-stakeholder situation and the growing recognition of interdependencies among stakeholders foster the complexity of addressing sustainable river management for the Upper Citarum River. To gain insights on essential competencies and adaptations in higher education curricula, the Environmental Engineering Department of the Faculty of Civil and Environmental Engineering-ITB, Telkom University Indonesia, and Van Hall Larenstein University of Applied Sciences, Netherlands, joined hands in a collaborative research project. This study aims to develop a socio-engineering aspect for sustainable river water quality management in the Environmental Engineering Field and Curricula. The methods used are social imaginaries of Participatory Mapping and a Poetry Route that allowed the involved river bank communities to activate their role and take positions in the living lab. Institutional stakeholders, acting in a facilitating role, learned to gain and share information from and with the community. The result concludes that social imaginaries methods enable a new perspective in developing community-based programs and advocate further exploring the socio-engineering competencies of environmental professionals.
A preliminary study on the formation of acid mine drainage through rock geochemical test in the coal mining areas
Authors: Tuheteru E J , Suhaila  , Suliestyah  , Hartami P N , Yulianti R 
Published: December 2023

Abstract
Acid mine drainage (AMD) is the biggest issue occurring in every mining industry. Therefore, it is necessary to check the rock, particularly its potency to form acid mine drainage. PT X in Lahat, South Sumatra does not yet own a distribution model for the PAF and NAF rocks. Thus, this research was conducted to determine the distribution of PAF and NAF rocks as an initial potency for the formation of acid mine drainage. Six samples in the field were taken from the pit walls, in which these sample codes were A, B, C, D, E, and F, respectively. These samples were subjected to the static and kinetic tests in the laboratory. The static test showed that a sample with a potency to form acid was sample E, while the other five samples did not have any potency to form acid. Afterwards, kinetic tests were conducted with a daily cycle for 25 days. The result showed that the sample F had lower pH value, compared with the other five samples. Thus, based on this study, it can be concluded that the only sample having the potency to form acid was sample F, while the other samples, namely A, B, C, D, and E, respectively, did not have any potency to form acids.
The simple filtration unit in reducing parameters of restaurant wastewater
Authors: Yahya H , Rahman A , Izarna S R , Aida N 
Published: December 2023

Abstract
Restaurant wastes have high organic content that often pollute the environment. The filtration process is one method that can be done to reduce the restaurant wastes. The simple filtration process has been proven to be effective and capable of reducing contaminant contained in waste water. This study aims to determine the effectiveness of the simple filtration unit using some media for filtration and reducing some parameters of restaurant waste water. The Filtration experiment was carried out using variations in media with the thickness of 5, 10, and 15 cm. By using of media thickness with 15 cm given the best result in decreasing BOD, COD and turbidity (BOD was 93.4%, COD was 83.86%, and turbidity was 90.4%). The media thickness of 5 and 10 cm had given the best result of TSS parameter which was 99.22%. The media thickness of 5 cm also given the best result in oil and fat parameter, the result showed was 94.02%. The results of this study can be a solution in the treatment of restaurant liquid waste with the help of a filtration system.
Effectiveness of communal wastewater treatment plant in peri-urban Yogyakarta, Indonesia, for Escherichia coli removal
Authors: Lathifah A N , Emeraldine A C , Fatika S A , Yulianto A , Isnikarita R 
Published: December 2023

Abstract
Yogyakarta Special Region, one of Indonesia’s provinces, has many communal wastewater treatment plants (CWWTPs). However, less than 40% of the province’s CWWTPs are operationally viable. Based on data from the Environmental Agency of Sleman Regency, the physical and chemical parameters of approximately 163 CWWTPs were evaluated. Their biological characteristics, however, still need to be understood. This study aimed to investigate the efficacy of CWWTPs in terms of biological parameters, specifically total Coliform and Escherichia coli (E. coli) concentrations in the observed CWWTPs. Five CWWTPs were used as study sites, namely IPAL Manunggal Pringgodani Sejati, IPAL Bakti Warga, IPAL Tambakrejo Bersih, IPAL Nologaten Bersih, and IPAL Andum Roso, which were classified as extremely high and high sanitation risk areas. The total Coliform and E. coli concentrations were determined using MPN techniques based on APHA 9221 (2017). The study found that the E. coli removal effectiveness of the CWWTPs in the very-high sanitation risk areas, namely IPAL Manunggal Pringgodani Sejati, IPAL Bakti Warga, and IPAL Tambakrejo Bersih, was 49%, 18%, and 83%, respectively. Furthermore, in high sanitation risk regions, such as IPAL Nologaten Bersih and IPAL Andum Roso, the CWWTPS were 17% and 73%, respectively. Total Coliform concentrations at all CWWTPs were below the standard limit set by Permen LHK No 68 and the EPA. The findings of this study will help to improve understanding of the WWTP process for E. coli elimination, which will, in turn, help to improve CWWTP performance.
Piezoelectric sensor design of graphite-aluminium with dynamic surface interaction method as an environmental technology
Authors: Utomo S B , Irawan J F , Hilmi G A , Cahyadi W , Suprianto T 
Published: December 2023

Abstract
Today, graphite is a phenomenal material as an environmentally friendly technology in alternative piezoelectric. Graphite materials with electrical conductivity as electrodes have been widely applied in lithium batteries to support electricity with zero-emissions. Many previous studies used graphene electrodes to harvest electrical energy from raindrops colliding on the electrodes. The voltage generated by the impulse of raindrops on the electrodes is about 129 microvolts. Limitations may arise from rain power generation; namely, the space for system installation is proportional to the amount of power generated. Therefore, electrical power is able to generate using immersing the electrodes into seawater. This type of power generation overcomes the space problem as they can be stacked vertically producing a piezoelectric effect. This study aims to design a piezoelectric sensor of graphite and aluminium reacted to seawater after being subjected to pressure. The experimental results show that the increase in graphite composition greatly affects the voltage results and the composition of seawater will decrease the voltage. Voltage arranged in series from the piezoelectric sensor contributes an increase in voltage about twice the voltage of the unit voltage.
Comparative analysis of performance and fouling characteristics of microfiltration and ultrafiltration polycarbonate membrane
Authors: Abror M R , Laksono S , Adityosulindro S 
Published: December 2023

Abstract
Seawater Reverse Osmosis is the most popular desalination technology for providing clean water. However, several problems in SWRO operations occurs, namely the decrease in membrane performance due to fouling. Fouling on the membrane is generally caused by high salinity and organic content in seawater. Therefore, pre-treatment technology is needed to improve water quality and reduce the workload of SWRO. This study aims to determine the suitable pre-treatment technology, by examining the removal efficiency of parameters in water using Ultrafiltration and microfiltration membranes. In this study, feed water was obtained from treated seawater. The experiment employed an average pore size of 0.01 micron polycarbonate track etched (PCTE) ultrafiltration membrane and 0.2 micron polycarbonate (PC) microfiltration membrane, respectively, with a dead-end filtration method and constant flux values at 60 L/m2.h and 120 L/m2.h. The choice of polycarbonate membrane is based on several advantages, such as high durability and chemical resistance. Water quality parameters such as turbidity, total dissolved solid (TDS), conductivity, dissolved oxygen (DO), organic substances (UV-Vis), and chemical oxygen demand (COD) were observed to determine the performance of each membrane types. The results showed that the operation of ultrafiltration membranes able to remove high amount of turbidity and COD with 88 ± 4 % and 86 ± 12 % removal percentage. Moreover, lesser removal efficiency was found for DO, TDS, UV-Vis and conductivity employing ultrafiltration membrane. In comparison to microfiltration, Ultrafiltration membrane was revealed as promising pretreatment for SWRO with higher retention of measured parameters and better membrane filtration performance.
Novel adsorbent derived from sludge of paper industry for removal of cesium ion in water
Authors: Siswoyo E , Tanaka S 
Published: December 2023

Abstract
Metal ion contamination has been a public concern due to its negative impact on human health and the environment. Cesium (Cs), a harmful metal ion, can cause cell damage; acute radiation syndrome includes nausea, vomiting, diarrhea, bleeding, and, in extreme cases, death. As a result, removing cesium ion from water is critical. This research aims to examine the capacity of a novel adsorbent derived from paper industry solid waste to remove cesium ion from water. The adsorption process was carried out with some variables including adsorbent dose, solution of pH, contact time, initial Cs concentration, and adsorbent form. According to characterization data, paper industry sludge contains elements such as SiO2 (28.1%), CaO (21.8%), Al2O3 (16.1%), and Fe2O3 (12%), among others. The surface area of the adsorbent is 100 m2/g and a diameter of 3.8 nm. Following equilibrium, the current study discovered that the developed adsorbent has the highest cesium removal, up to 79% for 10 mg/L of Cs initial. The novel adsorbent has high adsorption removal and may be a promising adsorbent material for metal ion removal in water.
SWOT analysis to determine waste management strategy in Tenggilis Mejoyo District, Surabaya City
Authors: Rachmawati F , Wilujeng S A 
Published: December 2023

Abstract
Tenggilis Mejoyo District, Surabaya City has had a population growth rate of 0,03% in the last ten years, so the amount of waste generation has also increased. Waste management in the district still applies the collect-and-dispose method which results in a large amount of waste that goes to the landfill. This study aims to examine the potential for household waste reduction that occurs in each waste source and determine strategies for improving household waste management. Waste generation data collection method with direct sampling method at the source according to SNI 19-3964-1994 as wee as interviews. The number of samples is 100 houses selected using a stratified random sampling approach which refers to the strata of population density. Interview data were analyzed using Strength Weakness Opportunity Threat (SWOT) analysis to determine waste management strategies to increase waste reduction at the source. The results of this study indicate that the average household waste generation is 15.62 tons/day. Currently, household waste reduction reaches 19.3% from each waste source, namely waste banks, temporary disposal sites (TPS), Reduce Reuse Recycle waste disposal site (TPS 3R), and composting. Increasing reduction through waste utilization and increasing community participation is ideally planned to reach 28.5%. The results of the SWOT analysis show that household waste management is in the third quadrant, namely the turn-around strategy. The strategies that can be implemented consist of conducting socialization and training for the community, providing waste pick-up mechanisms by waste banks, scheduling a waste collection, and implementing technical guidance and periodic monitoring by Environmental Agency and collaborating with corporations.
Technical and financial feasibility study of utilization municipal solid waste as Refuse-Derived Fuel (RDF) in Griyo Mulyo landfill
Authors: Ugroseno W , Warmadewanthi I D A A 
Published: December 2023

Abstract
Griyo Mulyo landfill, the only final waste processing facility owned by Sidoarjo Regency, received a waste generation of 201,975 tons/year in 2022. Most of the municipal solid waste received by the Griyo Mulyo landfill was straightly dumped at the old landfill at 82.2% of total solid waste. Therefore, this research examined the potential for solid waste reduction at Griyo Mulyo final processing site with the Refuse-Derived Fuel (RDF) plant. In addition, an analysis of the financial feasibility of the RDF process and the environmental impact resulting from this process was also carried out. In this study, an analysis of the generation, composition, and density of solid waste received by Griyo Mulyo Landfill was carried out. From these data, the calculation of the mass balance of waste processing is carried out. The financial condition of RDF processing needs to be analyzed for financial feasibility, whether this activity is economically feasible. Some financial data required to calculate feasibility are sales of RDF products, RDF investment costs, and operational and maintenance costs. The result shows an average reduction in RDF raw material was 7.72% annually. The financial analysis on waste recovery to the RDF conversion system on Griyo Mulyo final processing site is feasible to be applied.
Compact or Fragmented? The Development of Spatial Pattern in Southern Peri Urban Area of Surakarta City Using Spatial Metric Analysis
Authors: Istanabi Tendra , Mauludya Yanwa E. J. , Miladan Nur 
Published: December 2023

Abstract
Surakarta City is experiencing rapid development of urban agglomeration that extends beyond the city’s administrative boundaries. The spatial development in Surakarta City tends to the south, which strengthens this area as peri-urban Surakarta. The peri-urban area has a massive and sporadic land development phenomenon. This research aims to see the development of spatial patterns in the southern peri-urban area of Surakarta using spatial metric analysis and qualitative descriptive analysis. Metric spatial analysis is used to quantify the characteristics of spatial pattern development. At the same time, descriptive analysis is used to see the spatial direction of spatial pattern development. The results of the analysis show the tendency of agricultural areacharacteristics in all areas to be increasingly fragmented due to the penetration of built-up area. Meanwhile, the character of built-up area tends to be more cohesive and compact, with random and linear growth patterns following the main road.