bluuebunny/crossref_metadata_2025_split huggingface dataset:
Implementing a green economy to support sustainable city: opportunities and challenges for ecopreneurs in South Tangerang City, Indonesia
Authors: Setiastuti N , Guntoro I , Pradnyapasa D A , Ariyanto N , Sugarmansyah U , Suryaningtyas A D , Utomo S , Rahman A 
Published: December 2023

Abstract
SME productivity and a green economy are part of the economic transformation strategy to achieve Indonesia’s Vision 2045. As an SME actor who pays attention to environmental aspects, ecopreneurs can play a role in increasing the achievement of a green economy in the region. This research aims to analyze the opportunities and challenges for ecopreneurs in realizing a green economy in South Tangerang City. The scope of this research is ecopreneurs in South Tangerang City. The research method used is a qualitative descriptive analysis method. Data collection methods involve field interviews, literature studies, and observation. This research proposes purposive sampling. The results show that the opportunity for ecopreneurs is to contribute to growing the regional economy, improve people’s lives by covering economic, social, and environmental aspects, increase the proportion of waste processing and recycling, and increase employment. While the challenge is the need for rapid adaptation according to consumer demands, strengthening the ability to meet business requirements, improving managerial skills, expanding networks, building partnerships, and cooperating with governments, associations, industry, and companies.
Springs occurrence and its geological controls in Sulamu, Central Fatuleu and West Fatuleu, Kupang, East Nusa Tenggara, Indonesia
Authors: Adelin A N , Putra D P E , Pranantya P A 
Published: December 2023

Abstract
Springs are one of the water sources which can be used to meet the water needs of the community. Springs can be the main reliable source of water during the dry season in areas experiencing drought such as Kupang. This study aims to present observational data at the research area to find the relationship between the occurrence of springs and the geological conditions using field observation method for mapping the spring occurrence and its geological conditions. The results shows that there are 23 springs exist in the study area. The emergence of springs is generally found in limestone, which are 11 springs, then in conglomerate with 4 springs, 3 springs in the claystone, 3 springs in sandstone, 1 spring in schist, and 1 spring in alluvial. Based on the morphology, 8 springs found on hillsides, 8 springs at the foothills, 6 springs in the valley, and 1 spring on the alluvial plains. The largest discharge is 110.98 ℓ/s appears in limestone at the foothill (break of slope). Meanwhile, the spring with the smallest discharge, 0.04 𝓁/s, is located in claystone on the hillside. But most of all, the springs occurrence are related to fractures and dissolution holes in rocks.
Enhanced Biodegradation of Crude Oil in Seawater by Using Microbial Consortia
Authors: Zahari N Z , Tuah P M , Hung L P , Cleophas F N , Yatim A N M , Ali S A M 
Published: December 2023

Abstract
A biodegradation study was performed to assess the biodegradation of crude oil in seawater by consortium of Candida tropicalis RETL-Cr1, Pseudomonas aeruginosa BAS-Cr1 and Chromobacterium violaceum MAB-Cr1. Two independent experiments using different growth substrates, 5 mM glucose and 5% (v/v) crude oil, were undertaken to compare the microbial growth profile. The study was carried out using shake flask culture at 30°C, agitated 200 rpm. Microbial growth profile was monitored by measuring the optical density (OD600) on hourly and weekly basis. Biodegradation efficiency and rate were quantified by comparing the initial and final crude oil concentration, whereas the degradation of selected aliphatic hydrocarbons was quantified by comparing the initial and final area in chromatogram. The biodegradation ratios were monitored using Gas Chromatography Mass Spectrometry (GC-MS) method. Present finding showed that glucose was completely utilized at T10. However, the consortia can growth in crude oil even after 28 days. Overall biodegradation efficiency is 69.74% while the overall biodegradation rate is 24.85 g/L/d. The consortia could degrade 37% of n-alkane in crude oil after 28 days. Besides, biodegradation ratios shown that biodegradation had took place throughout the degradation period. It can be concluded that the consortia have high potential to degrade crude oil efficiently.
Observing the management of palm-oil gasoline development in Indonesia: alternative policy selection
Authors: Maninggar N , Firmansyah R , Pertiwi R , Nurzal E R , Warsono S Y , Sofyan Y 
Published: December 2023

Abstract
The creating of new renewable energy by converting fossil fuels into biofuels is a wise solution for reducing emissions. Palm-oil gasoline, relatively unknown alternative fuel for replacing gasoline, has begun to be produced in Indonesia. As the world’s largest Crude Palm Oil (CPO) producer, Indonesia has the potential to become a best practice for palm-oil gasoline development, particularly in terms of production management. There are three ways to manage palm-oil gasoline production i.e: integration of palm-oil gasoline factories with smallholder farms, co-processing, and a mixture of the two. This paper aims to assess the preparedness of the three alternatives and provide policy recommendations for the development of palm-oil gasoline in Indonesia. Data collection were conducted in 2022 through in-depth interviews and Focus Group Discussion with a variety of energy experts. The Analytical Hierarchy Process (AHP) approach was used to analyse the data, using 5 alternative selection criteria, including: governance, fuel oil import substitution, local content use, stakeholder acceptance of the project, and impact on community. As a result, impact on community criteria are the most considered factor in palm-oil gasoline production and the integration of palm-oil gasoline factories with smallholder farms is the optimum development option.
Synthesis and characterization of Fe3O4/SiO2/Alginate photocatalyst from tin tailings for batik cual waste degradation
Authors: Andini D E , Fabiani V A , Putri R E 
Published: December 2023

Abstract
Fe3O4/SiO2/Alginate as photocatalyst for degradation of Batik Cual Waste has been synthesized. This study aimed to determine the degradation of cual batik waste using Fe3O4/SiO2/Alginate photocatalyst assisted by UV-C light. In this research, Fe3O4 was synthesized through the coprecipitation method, then coated with SiO2 and sodium alginate The source of SiO2 used comes from tin tailings sand. SiO2 content in tin tailings is 87.45%. UV DRS analysis showed that the band gap energies of SiO2, Fe3O4, Fe3O4/SiO2, Fe3O4/SiO2/Alginate were 1.76 eV, 1.61 eV, 2.04 eV and 1.59 eV, respectively. XRD analysis showed that the Fe3O4/SiO2 composite was successfully formed in the presence of typical diffraction peaks for silica quartz and magnetite on the composite diffractogram. Based on the percent degradation data, it was obtained that the optimal degradation time using the Fe3O4/SiO2/Alginate composite was 96.73% at 30 minutes.
Analysis of mangrove litter production and carbon stock in Sukamandi Village, Belitung Timur Regency
Authors: Farhaby AM , Sapriyadi  , Henri  , Arizona MO 
Published: December 2023

Abstract
This study examined the litter production and carbon stock in the mangrove forest of Sukamandi Village in Belitung Timur Regency. The research identified 10 mangrove species in the area and found that the highest litter biomass was recorded at 6x10-8 ton/ha in station III. The organic material content varied across stations, with the highest value observed in station III. The carbon content of mangrove litter was relatively low due to its composition. The study emphasizes the significance of mangrove ecosystems in carbon sequestration and underscores the need for conservation efforts in Sukamandi Village. The variations in leaf litter production in the mangrove forest are influenced by factors such as mangrove density, plant age, and fertility. Leaf litter production is higher in areas with greater tree density and varies among different mangrove species. Natural factors like weather conditions, wind direction and speed, and movements of living organisms can also impact leaf litter production. The average leaf litter production rate in Sukamandi Village is 258.81 gr/m2/month or 8.62 gr/m2/day. The carbon content in mangrove leaf litter is relatively low due to its composition, which primarily consists of water and mineral nutrients.
Mechanical properties Of Biocomposite Based On PVA Reinforced Phytoplankton For eco-friendly materials
Authors: Ariksa J , Wijianti E S , Setiawan Y , Saparin  
Published: December 2023

Abstract
The scientific advances and new technologies are made along with people’s increasing understanding of the environment. Eco-friendly has become the most important feature as a result of various scientific investigations and new products. This research is to produce a PVA biocomposite reinforced with phytoplankton (PP) that has good mechanical strength and is environmentally friendly. This biocomposite will be manufactured using the die casting method. The composition variation used in this study involves various comparisons between PVA material and phytoplankton reinforcement (PP) with compositions of 1gr, 1.5gr, and 2gr. These materials were then mixed using distilled water in a certain proportion (100 ml) after the PVA was dissolved. The findings demonstrated that the tensile characteristics tensile strength of the PVA matrix were significantly affected by the addition of PP. The findings of the research include the conclusion that, when compared to other composition variations, the biocomposite composition with 2 gr PP exhibits the best performance. The biocomposite exhibited a tensile strength of 39.1 MPa, indicating that the material has high enough mechanical strength for certain applications. These findings suggest that phytoplankton PVA biocomposites have potential as an environmentally friendly material alternative that has adequate mechanical properties. The use of phytoplankton as reinforcement is an example of how natural materials can be utilized to replace or reduce the use of synthetic materials that are more detrimental to the environment. This biocomposite can be a potential eco-friendly plastic with continued development.
Environmental rescue by local initiatives in Bangka Belitung
Authors: Murtasidin B , Robing R , Ansyari I , Zulkarnain I 
Published: December 2023

Abstract
As the greatest tin producer in Indonesia, Bangka Belitung has been associated with environmental degradation problems. The main cause of these problems is tin deregulation, from state monopoly to autonomy in tin management. Moreover, mining activity has degraded the habitat. These problems lead society, individually or in community, to be more aware of protecting ecosystems. The communities is located in Bangka Belitung. On this research, we will focus on analyzing the environmental rescue activity of two primary figures, Mr. Toha and BECAK (Bangka Environment Creative Activist of Kawa), which will be discussed in Deep Ecology by Arne Naess. The findings show that amid the environmental damage caused by massive lead mining, these local initiatives had a significant impact on environmental conservation in Bangka Belitung. Through the cultivation of mangroves and coastal ecosystem preservation, Mr. Toha managed to prevent further damage and create sustainable habitats for various species. The BECAK community also plays an active role in implementing educational activities, waste management, and environmental advocacy, which influence local environmental policies. In the context of Deep Ecology theory, these two local initiatives reflect Arne Naess’s principles, such as recognition of biodiversity, active participation in society, and the relationship between man and nature.
Blue economy versus sea mining: A model of sea territory management that synergized economic growth and sustainable development
Authors: Zukhri N , Rosalina E , Christianingrum C 
Published: December 2023

Abstract
Bangka Belitung Province is an archipelago that has sea areas that need to be managed. The management of this sea area is a hard job for the Bangka Belitung Islands Province. Bangka Belitung Province is a producer of tin as a driving force for economic growth. Economic growth is the goal of implementing sustainable development. This study aims to plan a management model for tin-producing marine areas. Management of sea areas of tin-producing areas as a locomotive for economic growth. Where this economic growth still pays attention to sustainable development. The method used in this study is qualitative. There are three data collection techniques interviews, literature review, and observation. The research results are in the form of an appropriate model to be used as a recommendation for the Regional Government. We use this reference to increase economic growth. Regional economic growth still pays attention to the realization of sustainable development. The selection of informants in this study used purposive and snowball sampling methods. The results of the study found that the Bangka Belitung Islands Province Regional Regulation No. 3 of 2020. It is about Zoning Plans for Coastal Areas and Small Islands. That rule should be used as a basis for formulating a Management Model for marine areas in Bangka Belitung. Another finding from this study is the formulation of economic sectors. The Blue Economy in supporting the realization of sustainable development. There is a need for synergy from all stakeholders to put in place PERDA No. 3 of 2020.
Behavioral-alike model-driven for the power demand of battery swapping stations in supporting two and three-wheeled electrification in the new capital city of Indonesia
Authors: Syamroni A W , Dinanta G P , Jamaluddin T A A , Kurniasari A 
Published: December 2023

Abstract
An integrated transportation system envisages (near) zero-emission for public and private vehicles toward sustainable and accessible urban mobility as a committed strategy for Indonesia’s new capital city (INCC). Electric mobility (e-mobility) is therefore aligned with the government’s climate mitigation commitment. Proposing an evidence-based solution for the refueling approach, battery swapping technology is considered due to its modularity of ‘plug and play’ (PnP) and cost-effective upfront investment, i.e., modular battery swapping point (MBSP) for two|three-wheeled e-mobility. However, due to the uncertainty and insufficient preliminary data on the number of rolled-out units, intended location, and allocation, the planning process of the supporting infrastructure in the early stages of transition is mostly hampered. Meanwhile, using common assumptions or averaging measures may lead to substantial disparities, risking the initiatives for cost-shared infrastructure spending. Therefore, constructing a framework model of a behavior-alike of MBSP is imperative. The framework has a distinct advantage in generating the time series of power demand profiles over the unknown parameters, i.e., the battery pack (BP) properties, user tendencies of fetching and filling cycles, and tailor-made intentions exploiting the predictive Monte Carlo (PMC) method. This work aims to contribute insight to stakeholders, policymakers, and operators and disseminate relevant planning research.
Diversity of soil mesofauna at various ages of post-tin mining reclamation land on Bangka Island
Authors: Pertiwi  , Inonu I , Apriyadi R 
Published: December 2023

Abstract
Soil mesofauna can be used as an indicator of soil fertility on post-tin mining reclamation land. The diversity of soil mesofauna depends on climatic conditions and soil characteristics at its habitat. The purpose of this study were to determine the diversity of soil mesofauna at various ages of post-tin mining reclamation on Bangka Island and to determine the relationship of soil mesofauna diversity at various ages of post-tin mining reclamation land on Bangka Island with the soil characteristics. This research was carried out in January-March 2021 in reclamation land with different ages (2 years, 4 years, 6 years and 26 years) and forest site as control (comparison data). The method used is a survey method and sampling with a stratified random sampling method using pifall trap. The results showed that the diversity of soil mesofauna in reclamation aged 2 years, 4 years and 6 years, and control forest was in the medium category while the 26 years old reclamation land indicated as low diversity. The age of reclamation affects the soil mesofauna’s diversity index, the higher the age of reclamation land have higher diversity index, except for the 26 years old reclamation. The soil mesofauna diversity index has a very high correlation with soil and air moisture, a very low correlation with air temperature, a moderate correlation between air temperature and soil pH, while the C-organic content is opposite or negatively correlated with the diversity index and evenness index of the soil mesofauna.
Synthesis and characterization of microcrystals cellulose from citronella waste (Cymbopogon nardus L.) as a filler in graphene oxide
Authors: Fabiani V A , Indriawati A , Andini D E , Sari S A P , Asriza R O 
Published: December 2023

Abstract
One of the energy storage materials that is interesting to research is graphene-based. Electrodes from multiple layers of graphene oxide can produce dense porous materials capable of trapping charged ions of various sizes. Graphene-based materials generally need to be composited to prevent layer buildup, resulting in less than optimal energy storage characteristics. Microcrystal cellulose should be added to reduce the formation of the graphene layer and increase the pore size. Microcrystal cellulose are produced by decomposing and separating the parts of natural cellulose crystals. One type of grass in Bangka Belitung is the citronella (Cymbopogon nardus). The cellulose yield from citronella waste is 22%. Based on FTIR spectroscopy, there are typical functional groups of cellulose such as C=O, C-H, C-O, and C-O-C groups. The size of the cellulose microcrystals obtained is 49.47 µm.
Thermal and daylighting evaluation: the basic of energy efficient house design at the earliest stages
Authors: Alfani  , Fitriaty P , Malik S M 
Published: December 2023

Abstract
The increase in electrical energy used in residential buildings is due to their designs being less responsive to the local climate. This research aims to analyse the implementation of energy efficient house design principles for the tropical, hilly area. The tropical, hilly area has distinctive climate characteristics compared to the lowland tropical area. Thus, it resulted in many challenges in providing internal comfort conditions for the occupants by architectural design only. Palu, Sulawesi Tengah Province of Indonesia, was selected as the case study location. The analyses were carried out by modelling three sample houses and simulating their daylighting and natural ventilation condition. Three house models were built considering several design parameters such as house orientation, geometry, plan, type and position of the openings. Simulations settings included different building materials, the number of occupants, operational schedules and electricity usage schedules. The operative temperature was used for thermal analysis. Meanwhile, spatial daylight Autonomy (sDA) of 100/50% was used for daylighting analysis. The result of the study provided the visualisations of thermal and daylighting conditions for each sample model. Design models of energy efficient houses suitable for the tropical hilly area were also recommended.
Derivation of geomagnetic field to determine geothermal flow at Terak, Bangka Belitung
Authors: Kusmita T , Kumala S A , Agustin N , Widyaningrum Y , Tiandho Y , Oktaviyani S 
Published: December 2023

Abstract
The Geothermal system on Bangka Belitung islands are characterised to a radiogenic type of non-volcanic geothermal energy. The presence of geothermal energy in this region can be attributed to the geological characteristics of granite rocks, which undergo processes such as fracturing, folding, or faulting. The primary objective of this study is to figure out the subsurface heat flow patterns within the geothermal region of Terak. The process of collecting data was conducted via a Proton Precession Magnetometer (PPM) instrument, which consisted of a track of 2.5 kilometres in length. The determination of subsurface heat flow patterns in total magnetic anomaly, regional anomaly, and residual anomaly was achieved through the application of the First Horizontal Derivative (FHD) and Second Vertical Derivative (SVD) algorithms. The findings indicate the presence of a subsurface heat flow pattern in the eastern region, which spreads towards the southeast and further extends to the southwest. Notably, this pattern is characterised by abnormal depths ranging from about 20 to 130 metres beneath the surface. The observed phenomenon was in line with the consistent occurrence of geothermal manifestations in the region.
High porosity activated carbon developed from biomass waste
Authors: Aldila H , Puspita I , Arsyadi A , Afriani F , Megiyo  
Published: December 2023

AbstractThe biomass waste (Bw) are abundant and high potential as an activated carbon (AC) precursors. In this study, Bw has been converted to biomass waste AC (BwAC) via chemical-physical activation from ketapang, coconut, candlenut shell, and pepper husk carbon precursors immersed in chemical activator with H3PO4then pyrolysis at 650°C. The influence of Bw sources on the pore structure development was investigated and discussed. Coconut shell carbon precursors successfully convert to activated carbon with the highest surface area and pore volume relative to the others. Lignocellulosic content plays an important role. The high lignocellulosic content has the most appropriate structure for porosity development, especially microporosity.
A simple method of fabricating activated carbon-based supercapacitor electrode sheets
Authors: Kurniawan W B 
Published: December 2023

Abstract
Pepper shell waste is a side effect of relatively untapped pepper production. In this research, activated carbon from pepper shell waste was made using the chemical activator ZnCl2 and followed by physical activation using nitrogen gas (N2). The resulting activated carbon is then printed into supercapacitor electrode sheets by adding carbon black, PVDF, and NMP by varying the composition between activated carbon and carbon black. The performance of the fabricated electrode sheets was then tested using the Galvanostatic Charge Discharge (GCD) method. The results show that the addition of carbon black affects the specific capacitance value of the fabricated electrode sheet. The GCD results show that the sample has a specific capacitance value of 13.64 F/g.