bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ecotoxicity assessment of amoxicillin degradation product in aqueous media after photochemical process
Authors: Pratiwi W Z , Hadiyanto  , Widayat  , Baihaqi R A 
Published: December 2024

Abstract
Amoxicillin can have adverse effects on non-target bacteria in aquatic environments, causing disruption to the balance of aquatic ecosystems and promoting the emergence of antibiotic resistance. The Advanced Oxidation Process, namely UV/H2O2, is a promising method for the degradation of antibiotics such as amoxicillin due to its effectiveness. However, the degradation products might have ecotoxic potential and have not been studied; therefore, this study aims to evaluate the ecotoxicity of amoxicillin degradation using UV/H2O2. The in silico study was conducted using ECOSAR to theoretically assess the ecotoxicity of the ensuing transformation products on aquatic organisms. The ECOSAR calculations offer an early assessment of the possible hazard of amoxicillin degradation products in the aquatic environment. The research result shows that overall degradation products from the UV/H2O2 approach are not harmful in ecotoxicity, although some by-products still possess ecotoxic potential. Moreover, the findings of this study suggest that the mineralization level of amoxicillin degradation by-products is relatively low due to the production of hazardous compounds resistant to hydroxyl radical attack. This study highlights the necessity for a more comprehensive understanding of the by-products produced by the degradation process of amoxicillin using UV/H2O2 and their influence on aquatic ecosystems.
The Influence of Polypropylene Non-woven Plastic Waste on Alfisol Soil Quality
Authors: Khoironi A. , Najiyah A. N. , Baihaqi R. A. , Nurjannah  , Lukitasari M. , Kusmiyati  
Published: December 2024

Abstract
Non-woven polypropylene plastic is commonly used for manufacturing disposable masks, spun bond bags, and other waterproof equipment. The water-resistant properties of non-woven polypropylene provide an issue in the environment when it is disposed of in the soil system. This study aimed to assess the impact of non-woven polypropylene waste on soil quality and the quality of water that infiltrates the soil. This study used a prototype reactor filled with alfisol soil and non-woven polypropylene obtained from disposable masks and spund bond bags. The soil treatment was conducted over 60 days, with analyses performed on the soil and the infiltration water. The research findings revealed substantial disparities in the decreased alfisol soil bulk density, particularly in the soil with spun bond treatment. The degradation of non-woven polypropylene plastic in alfisol soil is confirmed by the intriguing findings of increased COD and TDS concentrations in the infiltration water. These concentrations indicate that the soil treated with foto-oxidized polypropylene non-woven material experienced an increase in both COD and TDS levels. Moreover, this scenario affects the soil’s ability to retain water due to the alteration in soil porosity.
The presence of microplastics in Surabaya coastal area and its correlation with conventional water quality parameters
Authors: Junior T , Nisaa A F , Karnaningroem N , Mardyanto M A 
Published: December 2024

Abstract
Microplastic’s existence has gained much attention due to its toxicity and harmful effects on marine life. One of the microplastic behaviours in the environment is to absorb hydrophobic pollutants. This behaviour might increase the toxicity of microplastics, affect the concentration of contaminants, and harm the environment. Kenjeran coastal area is a hotspot for human activities in Surabaya City, such as tourist, military training, and fishing activities. Therefore, the Kenjeran coastal area has a high potential to be polluted by plastics and microplastics. This study aimed to identify the abundance and polymer types of microplastics, as well as their correlations with chemical oxygen demand (COD) and total suspended solids (TSS) concentrations in the seawater of the Kenjeran coastal area. Sampling was conducted at three different points in March and April 2024. The average abundance of microplastics obtained was 63-102 particles/L. Meanwhile, the polymer types obtained were polyethylene, polystyrene, ethylene vinyl acetate, and polycarbonate. The correlation test results show that microplastic abundances do not have a significant correlation with COD and TSS concentration in seawater. This study can be used for further research in emerging pollutants and decision-making processes regarding plastic management from the source to the sea.
Recovery of Valuable Metals from Wastewater using Electrochemical
Authors: Oktiawan Wiharyanto , Sarminingsih Anik , Purwono Purwono , Afriana Dinda , Asdy Eva Rizqi 
Published: December 2024

Abstract
Today, wastewater is already considered a secondary resource due to its abundant nutrients, chemical energy content and other valuable constituents. However, recovery of valuable resources such as valuable metals from wastewater interesting to investigate. This study aims to recover valuable metalfrom wastewater using electrocoagulation (EC). This study used a cylindrically-shaped EC reactor with a total volume of 1500 mL. EC reactors are equipped with cathodes and anodes, which are spiral and cylindrical respectively. The result shows that the initial pH is low at 0.39, then decreases to 0.16 within 1 minute. After that, the pH gradually increases until it reaches its peak at 3.48 after 60 minutes. After 45 minutes, the pH increased significantly, suggesting that the electrocoagulation process could lead to an increase in pH in the wastewater. After 15 minutes, the temperature began to rise gradually, reaching 39.3°C after 60 minutes. This increase in temperature may be due to the ongoing electrocoagulation reaction and the heating effect of electrical voltage. Cr, a valuable metal, has a concentration of 2.09 mg/L, which dramatically decreases to 1.12 mg/L after 1 minute. Cr concentrations continued to decrease until they reached a low of 0.13 mg/L after 30 minutes. This indicates a significant recovery of Cr from wastewater.
Water efficiency analysis and optimization of chemical usage on productivity of demineralizer plant PT. Pupuk Iskandar Muda
Authors: Shara S , Hijrin M , Mastura R , Ramadhan S , Ikhsanuddin  , Wahyu S , Aulia Z , Syarwadi  , Duana C M 
Published: December 2024

Abstract
A demineralization process is carried out in industrial water treatment, and this process requires large amounts of chemicals that can increase the pollutant load of wastewater and harm ecosystems, biodiversity, and climate. Therefore, this study aims to analyze water efficiency and chemicals used in the water treatment process at the Demineralizer Plant. The analysis was carried out through a fishbone diagram and Nominal Group Technique (NGT) method to identify the problem so that the corrective solution is obtained, namely by backwashing the cation and anion resins periodically at 100,000 m3, maintaining the flow service setting for the demineralized plant at 90 - 100 m3/hour, and adjusting the specific gravity at the time of regeneration of Cation in the first Chemical. The results showed that PT made improvements. Pupuk Iskandar Muda has succeeded in carrying out a water efficiency of 484.87 m3. That impacts production costs, which decrease along with reduced chemical use. The company saved IDR 4.251.782 in 2021 after the repairs were carried out. Water efficiency and optimization of chemical use can save the cost of purchasing chemicals, minimize environmental impacts, and provide the best and most practical solutions at PT. Pupuk Iskandar Muda.
Determination of pollution load and river water quality status using the pollution index method (case study: Way Sekampung Watershed, Lampung Province, Indonesia)
Authors: Awfa D , Habibie M M , Imami A D , Azizah R N , Prayogo W 
Published: December 2024

Abstract
Way Sekampung watershed is a significant watershed from the Seputih Sekampung River in Lampung Province. Along the Way Sekampung watershed, there are several WTP intakes. However, the watershed is surrounded by rice field irrigation flows, domestic waste disposal, and tributary estuaries that can potentially reduce water quality values. This study aimed to identify water quality and calculate the water pollution load and the value of water quality status in the Way Sekampung watershed. The parameters tested include temperature, pH, TSS, BOD, DO, ammonia, and total coliform. In this study, the method used to identify water quality is the Pollution Index (IP) method, and for pollution loads, the APL and MPL methods are used. The research area is divided into four segments consisting of 4 water quality sampling points and 1 point source pollution load point. The results obtained parameters that do not meet the quality standards at all points are BOD, COD, and Total Coliform parameters. In calculating pollution load, three parameters are excessive: the Total Coliform parameter 36,295,776 kg/day, COD 738,555.84 kg/day, and BOD 216,691.2 kg/day. The water quality status of the Way Sekampung watershed, with an average total index value of 5.069, is categorized as moderately polluted.
Flood Hazard Zonation Using Geographic Information System: A Case Study Of Way Garuntang River Basin, Bandar Lampung
Authors: Sahid S , Yanto N P , Aziz F , Mardika M G I , Asferizal F , Zain S A , Ulhaq W D , Yunida D , Azizah R N , Imami A D , Awfa D 
Published: December 2024

Abstract
Flooding is a hydro-meteorological disaster that can have an impact not only on economic losses but also threatens human life. Flooding is the event of overflowing water in potential areas due to exceeding river’s capacity, which can be predicted by using flood inundation modeling. Flood modeling could be the first step to reduce the impact of losses caused by flood disasters. Rainfall data from 5 rain gauge stations over 15 years provides spatial and temporal distribution of data that can be used as inputs in flood modeling. This study aims to investigate the performance of flood inundation modeling using rain gauge data and to derive flood hazard zonation by combining flood depth and flood velocity through hydraulic modeling and GIS. The results show that the accuracy of the depth flood inundation model based on RMSE and MAE calculation is 2.56 m and 2.19 m. in addittion the flood distribution validation results show 46.60%. Although the accuracy results for flooding show differences that can be considered, this analysis is essential for understanding and planning spatial and water management in the study area, particularly in flood risk mitigation and hydrological infrastructure planning.
Assessment of groundwater vulnerability towards contamination using SI (Susceptibility Index) in Demak Regency, Indonesia
Authors: Santi Narulita , Putranto Thomas T , Zahra Firza Syarifa , Putri Maya A S 
Published: December 2024

Abstract
Water is one of the sources of life for humans. In Indonesia, many people utilize groundwater as a water source. Groundwater management must be done properly so that its utilization is sustainable. The potential for groundwater pollution is getting bigger with land change. One form of mitigation of groundwater pollution is to assess the vulnerability of groundwater pollution to pollution. The research location is in Demak Regency, which is one of the regencies directly adjacent to the capital city of Central Java Province. This will have a direct impact on the development of the city. The most visible thing is the increasing population which will have an impact on groundwater utilization in Demak Regency. This research uses the Susceptibility Index (SI) method. The results of the analysis show that the research location is divided into 2 classifications, namely high vulnerability and moderate vulnerability. High susceptibility has an SI index value between 72-88 and moderate susceptibility has an SI index value between 55 - 71. The factors that have the most influence on the difference in groundwater susceptibility classification to pollution in the research location are the depth of the water table, slope and land use.
Paving made from LDPE plastic waste, agricultural mulch waste and hot sand, case study of potato farming in the Dieng plateau
Authors: Faqih N. , Suripin  , Wulandari D. A. , Hermanto H. , Sunaryo  , Qomaruddin M. 
Published: December 2024

Abstract
LDPE plastic waste, prevalent in single-use products, poses significant environmental challenges. Repurposing this waste into paving materials provides an eco-friendly solution. The LDPE waste was cleaned, shredded, and mixed with hot sand in ratios of 60%-40%, 65%-35%, and 70%-30%. The mixtures were sintered at 120°C for 15 minutes and tested according to ISTM C140/C140M standards. The results demonstrate that increasing LDPE content enhances compressive strength. The 70%-30% mix exhibited the highest compressive strength at 36 MPa, whereas the 60%-40% mix showed the lowest at 30 MPa. Regression analysis revealed a strong positive correlation between LDPE content and compressive strength (R2 = 0.79), corroborated by T-tests and ANOVA. The Pearson correlation coefficient (r = 0.89) further indicated a robust relationship. These findings support the utilization of LDPE as a sustainable and effective material for paving applications.
The potential of retrofitting green roof to increase flood resilience in Jakarta
Authors: Widiachristy L , Orsi F 
Published: December 2024

Abstract
With climate change and urbanization intensifies, major cities are increasingly vulnerable to flooding. Green roofs have the potential to be a valuable tool for adapting to floods, but this benefit is not yet widely acknowledged. Although interest in applying nature-based solutions is rising, research has primarily concentrated on green roofs’ effectiveness on individual rooftops. This study analyses green roofs impact on flood susceptibility at the district level and examines how technical and social factors influence green roof suitability in Jakarta. Using exploratory design and mixed methods approach, this study performs suitability analysis and flood risk assessment through GIS-MCDA and AHP. The findings highlight that green roofs are most effective when implemented strategically, considering location and users. Although a single green roof might not have a major effect on flood risk, a network of them covering a large area could be very beneficial. This suggests that widespread green roof adoption could be critical for city in diversifying flood adaptation strategies to be more flood resilient in the future.
Green Building Assessment: A Case Study of Integrated Laboratory Building Diponegoro University Based on the Regulation of the Minister of Public Works and Public Housing No. 21 of 2021
Authors: Hatmoko J U D , Sari L I 
Published: December 2024

Abstract
Green building is an environmentally friendly building concept that has become increasingly important in addressing issues related to climate change, carbon emissions, and the greenhouse effect. This concept emphasizes reducing energy consumption and improving indoor environmental quality. This study aims to conduct a green assessment of a multi-storey building based on the Regulation of the Minister of Public Works and Public Housing No. 21 of 2021, using an Integrated Laboratory Building of the Engineering Faculty of Diponegoro University as the case study. The research method involves observation, measurement, and analysis based on green building criteria adopted from Ministerial Circular No. 1 of 2022, which provides technical guidelines for assessing the performance of green buildings. The aspects of the assessment in the planning stage of the building include site management, energy efficiency, water efficiency, indoor air quality, environmentally friendly materials, waste management, and wastewater management, with a total of 7 indicators. The results indicate that the building still needs to meet the green building criteria, with a total score of 30 out of 165 points or 18.2%. Recommendations from this study include the need for greater funding allocation for green building initiatives and the integration of green building principles from the early planning stages to ensure compliance with established standards and to maximize environmental and health benefits.
Revisiting Indonesian corporate carbon disclosure: does greenwashing obstruct true carbon reduction?
Authors: Wahyuningrum I F S , Mukhibad Hasan , Setyadharma Andryan , Oktavilia Shanty , Sriningsih  , Anwar Syaiful 
Published: December 2024

Abstract
With corporate disclosure of carbon information becoming steadily more important, there is a growing discussion regarding the assumption of a greenwashing issue within corporate carbon disclosure practices that raises the long-standing question of the sincerity of corporate concern. Prior studies of non-financial disclosure have predominantly focused on drivers of carbon disclosure without curiosity to ensure that carbon disclosure may be a substitute for poor carbon performance. This study investigates whether a company’s voluntary carbon disclosure accurately represents its carbon performance. The carbon disclosure score was measured based on content analysis of sustainability reports, and the carbon intensity of emissions was employed to calculate corporate carbon performance. Based on a sample of 38 Indonesian public companies in 2020-2022, the study finds carbon disclosure and carbon performance have a significant positive relationship, showing that carbon disclosure score reflects actual corporate carbon performance. This study finds, based on statistical graphs and hypothesis testing results, greenwashing undetected in the Indonesian context. Even so, this study offers practical suggestions for the government by providing standard guidelines for carbon emissions disclosure to facilitate diverse companies’ characteristics and companies should be confident of their performance to collect stakeholder attention.
Efficiency of Coal Mining Direction Based on Sedimentary Facies at PT Jambi Prima Coal, Sarolangun Regency, Jambi Province, Indonesia
Authors: Pangestu A R , Adni A , Fahrudin  , Qadaryati N 
Published: December 2024

Abstract
Indonesia requires a large amount of conventional energy for its current development and economic growth (e.g., coal). The coal distribution in the Sumatra Island (e.g., Muara Enim Formation) has been influenced by the sedimentary facies, resulting in the spatial geometry of the coal seams (i.e., direction and thickness). Furthermore, my study focused to analyse the sedimentary facies and the geometry of the coal seams. Based on the measured stratigraphic and borehole data, the research resulted in 4 types of sedimentary facies and coal seam geometry. The existing facies were distributary channel, crevasse splay, interdistributary bay, and swamps, which were part of the transitional lower delta plain. In the swamp facies, there are two coal seams (i.e., magma and dipa seam). The thickness of the magma seam increased towards the southeast, while towards the southwest happened to rise the dipa seam thickness. However, the dipa seam was affected by a channel facies phenomenon, causing to split into the dipa upper and dipa lower. Therefore, for determining the mining efficiency based on the sedimentary facies, the southern part of the magma and the dipa seam can be considered as the mining area, with the mining direction from the southeast towards the northwest.
A function of PVA/SiO2/CMC composite gel polymer electrolyte (GPE) for electrochemical performance of secondary zinc-air batteries (ZABs) respectively
Authors: Ulsak Mohammad Ghimnastiar , Devianto Hary , Widiatmoko Pramujo , Prakoso Tirto 
Published: December 2024

Abstract
ZABs are a desirable clean electrical energy storage technology to be developed. ZABs generates electricity through the zinc oxidation process at anode and oxygen reduction reaction at cathode. CV characterization to analyzing oxidation and reduction processes in ZAB-1P1S4C is attributed to the occurrence of oxidation (discharge) on the zinc surface with OH
− becoming a tetrahydroxyl dianion or

Z
n

(
O
H
)

4

2
−

and

Z
n

(
O
H
)

3
−

. An approach used for evaluating ZABs are called GCD characterization. There was a sharp drop in discharge curves of ZAB-1P and ZAB-3P. The sharp decrease in the ZAB-0A (1P) and ZAB-0B (3P) discharge curves occurs because the concentration of OH
− in the GPE decreases rapidly due to the evaporation of water so that OH
− which is intended for tetrahydroxyl dianions such as

Z
n

(
O
H
)

4

2
−

and zincate ion such as

Z
n

(
O
H
)

3
−

is very little formed. Another characterization is CCD characterisation to investigate influence of depth of the discharge curve and the rise in charge curve on CCD-1P4S4C. OCV is used to evaluate the difference in electric potential between a ZAB’s positive and negative terminals when no current is applied. Addition of SiO2 and CMC has effect of increasing the energy density and power density of ZAB-1P4S4C by 1.059 × 10−7 Wh/kg and 1.52 × 10−4 W/kg.
Evaluation of water consumption at district scale by analyzing smart water meter data
Authors: Obaid S , Hosoi K , Ngoc N M , Inoue T , Yokota K 
Published: December 2024

Abstract
In urbanization, understanding of water consumption is necessary for water supply infrastructure development. We have been studying water consumption at Iride-Chibata District in the development of water supply management in Kosai City, Shizuoka Prefecture, Japan. Here the water consumption has been managed by reading water meter at each household every two months. Meanwhile, with the provision of smart metering for electricity, the district has installed the smart meters, which can hourly monitor water consumption, at all of 1,871 households. This study analysed the smart water meter data of all households to evaluate the water consumption at district scale. The average daily water consumption per household was higher on weekends than on weekdays. The hourly consumption showed two peaks at the hours of 7:00 – 11:00, and 18:00 – 22:00, respectively corresponding to morning and evening activities in a household. Either morning or evening, the peaks of weekdays occurred one hour earlier than those of weekends. The evening peaks were higher than the morning ones, that might come from Japanese evening bathing culture. These findings may help for timeframe water supply planning.
Sustainable resilient communities: Strengthening tourism village institutions in disaster prone villages, central Bengkulu Regency, Bengkulu Province, Indonesia.
Authors: Darmi T , Mujtahid I M 
Published: December 2024

Abstract
This study aims to identify the institutional capacity of tourist villages in terms of preparedness, safety, and sustainable community resilience to manage tourist villages in disaster-prone areas. This study develops a theoretical framework based on institutional and socio-ecological resilience. Using qualitative research methods, the object of the study was the Rindu Hati tourist village, Central Bengkulu Regency, Bengkulu Province, Indonesia, which was identified as a disaster-prone village but is included in the top 10 tourist villages in Bengkulu Province. Data collection techniques included participant observation, in-depth interviews, and document studies. The results of the study confirmed that the Rindu Hati village has a natural landscape, socio-culture, and tourist attractions that are potential tourist villages worthy of development. Community resilience requires assistance from the local government, academic support, and the private sector. Strengthening the institutional capacity of tourist villages so that community resilience in dealing with natural disasters becomes important. The implications of the study emphasize that the development of sustainable disaster-prone tourist villages requires adaptive community resilience to all changes, but this process takes time and strong and well-organized institutions.