bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synergistic adsorption-photocatalytic degradation of methylene blue by Fe3O4/HKUST-1 composite modified with graphene oxide
Authors: Putri D R , Zulfa L L , Faaizatunnisa N , Akhlus S , Ediati R 
Published: September 2024

Abstract
Methylene blue (MB) is the most commonly used cationic dye, but the complex structure of MB makes it harder to be removed from the wastewater by conventional techniques. The integration of adsorption and photocatalytic has been proposed to overcome the drawbacks of the sole technology for more efficient and eco-friendly removal. A magnetic MOF composite, Fe3O4/HKUST-1, was successfully synthesized using the solvothermal method. The addition of graphene oxide (GO) uses the in situ method. XRD and FTIR results revealed the presence of GO, which was dispersed into the composite. SEM images for the composite showed GO(20)/Fe3O4/HKUST-1 was octahedral with Fe3O4 and GO distributed on the surface and between HKUST-1. When the initial concentration of MB was 50 mg/L, the composites exhibited high MB removal efficiency (92,75%) under irradiation through the combination of adsorption-photocatalytic. The effective removal of Fe3O4/HKUST-1 combined with the photocatalyst properties of GO, makes the composite highly efficient for applications in water purification. The adsorption kinetics of MB on the GO(20)/Fe3O4/HKUST-1 were well-fitted with the pseudo-second-order kinetic model.
Mercury Reduction using Isolates of Indigenous Fungi with Qualitative and Quantitative Methods
Authors: Dewi R S , Andriyani R , Ridwan Y S , Yoga G P , Pujiwati A , Subandrio H R , Zahro Z A , Sari A A 
Published: September 2024

Abstract
Illegal gold extraction in Indonesia, particularly in Kedungbanteng, Banyumas Regency, Central Java, causes mercury pollution in rivers and poses risks to health and ecosystems. Bioremediation, using fungi, can help cleaning up mercury pollution. This is achieved through utilizing these fungi in ways that align with emerging technologies. The study used fungi isolated from gold mining sludge waste in Kedungbanteng, Banyumas Regency that have the potential to reduce mercury (Hg). Its followed by assesing the effectiveness of fungal isolates to reduce mercury (Hg) both qualitatively and quantitatively. The study found that certain indigenous fungi from the gold mine waste in Kedungbanteng, Banyumas, have the potential to reduce mercury levels. These fungi belong to the Aspergillus (isolate A2), Penicillium (isolates A1, A4, and A5), and Basidiomycota phylum (isolate A3). Isolates A3, A4, and A5 were the three most adaptable fungi in media containing high levels of Hg. Qualitative test results show isolates A3, A4, A5 formed a yellow and white precipitate. Each of them can reduce mercury levels by 46%; 32%; 48%, respectively. Isolate A3 showed the highest average reduction in mercury levels in both fungal biomass and surrounding media. The finding in this study is that there is a relationship between the results of the qualitative test and the quantitative test. The correspondence between the two types of tests shows that the qualitative test has a significant representation of the quantitative measurement of Hg values in the tested media. Penicillium sp. isolates A5 has the potential to be used as an eco-friendly bioremediation agent as the best solution to pollution. issues.
The impact of acid mine drainage on the environment and social society
Authors: Susanto E , Soedjono E S , Titah H S 
Published: September 2024

Abstract
This study aims to analyse what factors can affect the impact of acid mine drainage on the environment and society. With a sample of research respondents being the community around the company, totalling 200 people. The variables used consist of the environmental variable (X3) as the dependent variable and independent variables, namely acid mine drainage (X1) and community social (X2), with each variable being measured by its indicators. This questionnaire is used to measure Statements compiled using the Likert scale with five respondent answers to consumer satisfaction, namely: Strongly Agree (SS), Agree (S), Hesitant (RR), Disagree (TS), and Strongly Disagree (STS). The data analysis technique used is partial least square-structural equation modelling (PLS-SEM) which is used to predict and develop theory. Partial Least Squares Structural Equation Modelling (PLS-SEM) is a robust and versatile statistical technique commonly employed for data analysis. PLS-SEM is particularly well-suited for exploratory research and when dealing with complex models, small sample sizes, or non-normal data distributions. It allows researchers to simultaneously assess the measurement and structural models, making it an effective tool for understanding complex relationships between variables. Based on the results of the analysis, it is known that Acid mine drainage affects the environment and society with a rms theta model of 0.470.
Competitive adsorption of gold ion in the presence of Fe(III) species on Mg/Al layered double hydroxides
Authors: Khoiru Wihadi Muh. Nur 
Published: September 2024

Abstract
In this paper, Mg/Al layered double hydroxide (LDH) was prepared via the co-precipitation method and used as an adsorbent of gold (AuCl4
−) with Fe3+ as the competitor ion in the aqueous solution. We conducted an adsorption test for single (without competitor) and binary (presence competitor) solutions. The adsorbent was characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Field emission scanning electron microscopy (FE-SEM). The effect of solution acidity indicated that the optimum adsorption of AuCl4
− without competitor was at pH 3. The kinetic study revealed that the adsorbent followed pseudo-second-order with a rate constant (k) of 2.88 x 10−3 and 3.92 x 10−3 g/(mg.min) for the single and binary solutions, respectively. According to the Langmuir isotherm model, the adsorption capacity was 21.74 and 14.29 mg g−1 for single and binary solutions, respectively. The morphological characteristic of the adsorbent showed the layered structure with the hexagonal platelet-type images.
The potential of palm frond-based magnetic biochar for peat water treatment
Authors: Darmayanti L , Juliani S , Andrio D 
Published: September 2024

Abstract
Riau Province has the largest palm plantation in Indonesia. The amount of palm plantation waste is quite large, so it needs to be managed so as not to pollute the environment. Palm plantation waste has a high lignocellulose content, so it has the potential to be used as a raw material for making biochar. Biochar has high effectiveness in removing organic substances from water. Despite its high adsorption capacity, biochar is difficult to separate from water due to its very small particle size. To solve this problem, magnetic biochar can be used. Magnetic biochar is the result of the magnetization of biochar with the addition of chemicals containing metal ions and pyrolyzed with little or no oxygen. The synthesis of magnetic biochar is strongly influenced by the impregnation ratio and pyrolysis temperature. This study aims to synthesize magnetic biochar from palm fronds by varying the impregnation ratio, pyrolysis temperature, and particle size and testing its ability to adsorb color and natural organic matter in peat water. Magnetic biochar was synthesized by FeCl3 impregnation ratios of 0.4, 0.5, 0.6, and 0.7, pyrolysis temperatures 450°C; 500°C with N2 gas flow, and particle size escaped sieves of 0.595 and 0.177 mm. The adsorption test results showed synthetic magnetic biochar with an impregnation ratio of 0.7, pyrolysis temperature of 500°C and particle size of 0.177 mm had the highest efficiency in removing colors and natural organic substances of 71.8% and 78.6%, respectively. From the proximate test, the magnetic biochar moisture content was 0.5%, the ash content was 3.37%, and the volatile content was 12.02%. This result has met the quality of technical activated carbon in SNI 06-3730-1995. The methylene blue absorption was 12.4 mg/g. This value is below the requirements of SNI 06-3730-1995. The results showed that magnetic biochar synthesized from palm frond has the potential to be used as an adsorbent in peat water treatment.
In situ synthesis of zinc oxide nanoparticles from electric arc furnace dust waste for functionalization of fabric: optimization with response surface methodology
Authors: Eskani I N , Rahayuningsih E , Astuti W , Pidhatika B 
Published: September 2024

Abstract
Electric arc furnace dust (EAFD) is a solid waste produced by the stainless steel producing industry. The zinc content in this material can reach 50-60%, so it is very potential to be recycled to produce zinc compounds. This study aims to conduct in situ synthesis of Zinc Oxide nanoparticles (ZnO NPs) from EAFD waste for functionalization of natural dye colored batik fabric. EAFD was leached using 3 M nitric acid and the leaching solution was used as precursor for the in situ synthesis of ZnO NPs on natural dye colored batik fabric. The in-situ synthesis of ZnO NPs was optimized using Response Surface Methodology with Box-Behnken Design (BBD) method. The independent variables were varied (the concentration of leaching solution, pH and temperature of the synthesis) and the responses were the Zn content of fabric, the diameter of ZnO NPs and the color difference of the fabric, investigated using FESEM-EDX, XRD and Colorimeter respectively. Under optimal condition, the natural dye colored batik fabric was imparted by 27 nm diameter of ZnO NPs and had an antibacterial activity against Staphylococcus aureus bacteria.
Recovery of ferronickel by green selective reduction of nickel laterite
Authors: Sari Y , Manaf A , Astuti W , Haryono T. , Nurjaman F , Bahfie F 
Published: September 2024

Abstract
The conversion of nickel laterite into ferronickel is commonly done through a high-temperature pyrometallurgical process that utilizes fossil fuels, which leads to environmental emissions. In order to deal with this, a biomass-based selective reduction process is proposed that uses palm shell charcoal (PSC) as the reductant. In this study, we investigate how to selectively reduce saprolytic nickel ore in various conditions, including pelletization, reduction at 1150°C for one hour, and wet magnetic separation. The optimal conditions, determined with 0.3 stoichiometric carbon, yielded a nickel content and recovery of 22.778 wt.% and 27.541 wt.%, respectively. Phases identified in the reduced pellet include forsterite, diopside, ferronickel, troilite, and olivine. Adjusting stoichiometry influences nickel concentration, resulting in increased recovery; however, excessive stoichiometry intensifies iron metallization, reducing nickel content. The addition of sodium sulfate affects nickel and iron recovery by promoting FeS phase formation, resulting in reduced iron recovery.
Techno-economic feasibility analysis of solar power plant at Putri Cempo landfill in Surakarta City
Authors: Indriyani Y , Laksmono R , Syahtaria M I , Sasongko N A 
Published: September 2024

Abstract
The electricity sector that leads to renewable energy sources aims to meet national electricity needs while achieving the target of renewable energy mix considering that fossil fuels are increasingly limited. One of the roles of the government in providing electricity generation in Surakarta City is through the construction of a municipal solid waste power plant (PLTSa) at the Putri Cempo landfill, but until past the targeted time PLTSa is not ready to operate. This study aims to analyze the techno-economic feasibility of potential rooftop solar power plants on buildings in the Putri Cempo landfill. The Quasi-Qualitative research method was used with primary data coming from observation and documentation while secondary data was sourced from appropriate literature studies then the data was processed and analyzed using RETScreen software. The results showed that the Landfill Office, Landfill Garage and PLTSa Office in the Putri Cempo Landfill area can be developed into solar power plant with the potential for electrical energy of 988 MWh/year. The conclusion of this research is that in meeting electricity needs and achieving the renewable energy mix target, the roofs of buildings in the Putri Cempo landfill can be maximized into solar power plant so that they can become an energy supply when an energy crisis occurs.
Development of a subsurface monitoring system for land subsidence hazard in the Bandung basin: a laboratory prototype
Authors: Sarah D , Zulfahmi Z , Sholehah A B , Riyani E A , Wahyudin  , Amar  
Published: September 2024

Abstract
Land subsidence is a global environmental hazard posed by urban area worldwide, causing degradation in environmental quality and leads to further disasters such as increased flood risk, contamination risk, and infrastructure damages. Anthropogenic causes, such as groundwater extraction and building weight, cause high land subsidence rates. The behaviour of the subsurface under the influence of anthropogenic causes must be well understood to mitigate this problem. Conventional subsurface monitoring is robust and costly. In this case, we aim to first develop a versatile and low-cost subsurface monitoring prototype for land subsidence at a laboratory scale using a model box. Methods employed were constructing an experiment model box, developing the monitoring system, and trial experiments in the laboratory. The sensors are linear vertical displacement transducer, potentiometer, water level and pressure sensors. The monitoring system uses Arduino microcontroller to convert sensors inputs to desirable outputs and a logger to record the real-time data and transmit it to personal computer in the laboratory. Land subsidence in the Gedebage area in Bandung basin was taken as a model case. The model box was filled with soil from Gedebage, Bandung. A scenario of exploitation of confined groundwater and weight of building was applied for the model case. The results show that the laboratory prototype can monitor the subsurface changes due to the applied anthropogenic forces. In the case of Bandung soil, groundwater exploitation did not immediately cause subsidence instantaneously. There is a time delay between the drawdown of groundwater level and the subsequent vertical deformation. The rate of subsidence varies spatially inside the tank, the largest is close to the pump well and surface loads. A maximum of 2.88 mm subsidence over 663 days was recorded following 1 m groundwater drawdown. This information asserts the importance of long-time monitoring in subsidence areas.
Climate change policy based on global study evolution 1979-2023: An insight and direction for Indonesia
Authors: Karinda K , Baharuddin T 
Published: September 2024

Abstract
Climate change is becoming an increasingly urgent issue and impacts countries around the world, including Indonesia, which are vulnerable to climate change. This research uses data sources in the form of research publication documents from the Scopus database by maximizing bibliometric analysis with Vosviewer. The main findings show that climate change is an urgent global challenge that requires active participation and profound contributions from Indonesia. Although the evolution of global studies on climate change policy provides valuable insights, Indonesia’s complex challenges, such as geographic diversity and the limited number of studies and publications, require a serious response. Understanding global climate change policy provides valuable insight for Indonesia in formulating future policy directions. Although the dominant research comes from environmental and social sciences, Indonesia needs to expand its involvement in sustainable economic development, green infrastructure, and renewable energy research. Cross-sector coordination and adequate financial and technological support are crucial in implementing this policy. This also requires adaptive regulation and public awareness.
Simple sterilization of rural household water by LDH (Layered Double Hydroxide)-embedded sheet
Authors: Johan E , Ihsan T , Matsue N 
Published: September 2024

Abstract
The lack of access to safe water is an urgent problem in rural communities. LDH (layered double hydroxide) is a potent material that effectively adsorbs most pathogens through its positive charge, but its powdery nature restricts its use in batch water. To overcome this, we developed LDH-embedded non-woven fabric sheets (LDH-ES) as a practical solution for sterilizing batch water. Zn/Al-LDH and Mg/Al-LDH were synthesized and embedded in fabric. Using Escherichia coli (DH5 α), two variants of 100 mL of DH5 α inoculated test solutions (1200 CFU/mL) were prepared: nutritionally poor (test water A) and moderately nutritious (test water B). Without adding LDH-ES, the viable counts in test water A were almost unchanged until 24 h, whereas in test water B it increased up to 19,000-fold after 24 h. Upon adding 162 cm2 of Zn/Al-LDH-ES (LDH = 0.2 g), both test water reduced the viable count to 0 CFU/mL after 3 h, achieving complete sterilization. In contrast, with Mg/Al-LDH-ES, the viable count after 24 h was 0 CFU/mL for test water A and 530 CFU/mL for test water B. The superior performance of Zn/Al-LDH-ES is ascribed to the additional antimicrobial effect of zinc. LDH-ES, easily retrievable post-sterilization, proves suitable for disinfecting rural household water.
Public health and water scarcity: the spatial distribution of quarter-disease patterns and access to clean water and safe drinking water in the water-scarce region of Makassar, Indonesia
Authors: Ridjal A T M , Dewi C , Basri  , Syatriani S , Syahrir M , Amaliah A R , Febriany I A 
Published: September 2024

Abstract
The scarcity and insufficient or poorly regulated water and sanitation will lead individuals to become vulnerable to different preventable health risks. When people lack even a basic drinking water solution, they rely on surface water and/or wastewater that is not risk-free. Furthermore, WHO (2019) stated that at least 2 billion individuals around the globe are using drinking water sources that are infected with feces. Tallo is one of the sub-districts in Makassar that is experiencing water scarcity, forcingly encouraging the community to use the available water sources, such as dug wells and rainwater. This study aimed to describe the spatial distribution of three-month disease patterns and access to clean water and safe drinking water in Tallo. Primary data was obtained from a face-to-face survey of 98 beneficiaries of Rainwater Harvesting (RWH) Tametotto and water clay filter in Tallo, while the spatial data was obtained from the spatially analyzed data by ArcGIS 8.0. The results revealed that the distribution of three-month diseases highly presented in diarrhea (8%) spatially shown around the river area, dermatitis (5%), and typhoid (3%). In addition, the most consumed drinking water is gallon mineral water, while the highest clean water accessed was from the artesian well in the entire research area. It concluded that the spatially distributed of the quarter diseases was diarrhea in the river area of Tallo (RT 3 and RT 4), and respondents mostly consumed gallons of mineral water for drinking and used artesian wells for Water, Hygiene, and Sanitation (WASH) in the whole area. It encouraged the government sectors to provide an appropriate water supply for Tallo as one of the water-scarce regions in Makassar and deliver education to people regarding WASH and the importance of safe water to avoid the occurrence of waterborne diseases.
Ammonium ion removal from contaminated water using Cikancra natural zeolite
Authors: Ahsan S A , Fahmi M A , Rohman A , Jakah  , Dida E N , Rusydi A F 
Published: September 2024

Abstract
Water quality in water bodies is deteriorating due to human activities such as industries, agriculture, and households. These activities have been reported to increase the levels of nitrogen species in water bodies, including ammonium (NH4
+). Various processes have been used to reduce NH4
+ concentration in water, including adsorption and ion exchange using zeolite which is renowned as an excellent adsorbent and ion exchange material. In this study, we assessed the ability of Cikancra natural zeolite to reduce the NH4
+ concentration in water. Heat pre-treatment was carried out on the zeolite to reveal its effect on the NH4
+ removal rate. Furthermore, several factors such as contact time, grain size, and initial NH4
+ concentration were evaluated to determine the optimum absorption condition. The experimental results reveal that heat-pretreated natural zeolite can reduce the NH4
+ concentration by up to 84% after 60 minutes of contact time. Furthermore, the absorption capacity of the zeolite is reaching 2.37 mg/g at an initial NH4
+ concentration of 50 mg/L. The evaluation using Freundlich and Langmuir isotherm models indicates that the process occurs physically due to Van Der Waals interaction between the adsorbate and the adsorbent.
Literature search sandbox: a large language model that generates search queries for systematic reviews
Authors: Adam Gaelen P , DeYoung Jay , Paul Alice , Saldanha Ian J , Balk Ethan M , Trikalinos Thomas A , Wallace Byron C 
Published: September 2024

Abstract

Objectives
Development of search queries for systematic reviews (SRs) is time-consuming. In this work, we capitalize on recent advances in large language models (LLMs) and a relatively large dataset of natural language descriptions of reviews and corresponding Boolean searches to generate Boolean search queries from SR titles and key questions.

Materials and Methods
We curated a training dataset of 10 346 SR search queries registered in PROSPERO. We used this dataset to fine-tune a set of models to generate search queries based on Mistral-Instruct-7b. We evaluated the models quantitatively using an evaluation dataset of 57 SRs and qualitatively through semi-structured interviews with 8 experienced medical librarians.

Results
The model-generated search queries had median sensitivity of 85% (interquartile range [IQR] 40%-100%) and number needed to read of 1206 citations (IQR 205-5810). The interviews suggested that the models lack both the necessary sensitivity and precision to be used without scrutiny but could be useful for topic scoping or as initial queries to be refined.

Discussion
Future research should focus on improving the dataset with more high-quality search queries, assessing whether fine-tuning the model on other fields, such as the population and intervention, improves performance, and exploring the addition of interactivity to the interface.

Conclusions
The datasets developed for this project can be used to train and evaluate LLMs that map review descriptions to Boolean search queries. The models cannot replace thoughtful search query design but may be useful in providing suggestions for key words and the framework for the query.