bluuebunny/crossref_metadata_2025_split huggingface dataset:
Student responses in environmental education using information technology at the Purwodadi Botanical Garden
Authors: Ginardi R V H , Laksono R A , Husni M , Ghozali K , Hariadi R R 
Published: January 2021

Abstract
Purwodadi Botanical Garden is an ex-situ plant conservation institution, as a conservation institution, one of the activities of Purwodadi Botanical Garden is environmental education. Increasing student visits and decreasing environmental education guides are problems that are being faced, therefore the use of information technology needs to be utilized to overcome these problems. The purpose of this study was to evaluate the pre-use of information technology in environmental education. Evaluation is aimed at elementary school students, junior high school, and high school. This study used a survey method with a questionnaire. The focus of the questionnaire is on the ease, interest, and adequacy of the information presented. Data analysis was performed using the descriptive analysis method with the division according to respondent education levels. Results of the analysis of the use of information technology in the Purwodadi Botanical Gardens show that at the primary school level, 49% are very satisfied, 44% are satisfied. at the secondary school level 30% are very satisfied, 58% are satisfied. at the high school level 39% are very satisfied, 56% are satisfied. From the results of research, the use of information technology for environmental education can be well received by students and can be immediately implemented.
Utilization of moringa oleifera leaves for making hand sanitizers to prevent the spread of COVID-19 virus
Authors: Arifan F , Broto R W , Sapatra E F , Pujiastuti A 
Published: January 2021

Abstract
Nowadays, the presence of Covid-19 in Indonesia is so terrible. But in truth, this virus can be prevented by maintaining personal hygiene. One of the simplest ways to maintain personal hygiene is to wash your hands and use hand sanitizers as a practical measure if there is no time to wash hands or limited water in certain places. Moringa leaves contain natural antiseptic ingredients, such as polyphenols. Antiseptic material can be processed into natural hand sanitizers. The results of various tests such as organoleptic, viscosity, scattering, and antibacterial test, shown that the percolation extraction method could produce an extract of hand sanitizers. It can be processed into hand sanitizers which comply with hand sanitizer quality standards. Moringa leaf extract hand sanitizer has many antibacterial components, namely saponins, triterpenoids, and tannins. The best result shows 24 minutes of the percolator, with heating temperature 40 °C and stirring time 45 minutes. The results obtained a viscosity of 2120 Cps, 4,79 cm of scattering test, and the average diameter of inhibition zones of 23,33 mm and fulfill the required standard.
Impacts of the Covid-19 pandemic on traditional oil mining at Wonocolo Village Kedewan Sub-District Bojonegoro Regency East Java
Authors: Rahmawati L A , Afiati N , Putranto T T 
Published: January 2021

Abstract
Mining in the world consists of modern and traditional mining. Various studies have discussed how field workers were precarious at being exposed to Covid-19 in modern mining. Many studies discuss ways of modern mines overcoming Covid-19, but discussion of research related to the impacts of Covid-19 on traditional mining has not been carried out. This study addressed the effect of the Covid-19 pandemic on traditional oil mining in Wonocolo, Bojonegoro Regency. This work is a descriptive study using observation and in-depth interviews and reviewing secondary data related to conventional mining activities. The results showed that the Covid-19 pandemic has an indirect effect on traditional oil mining activities in Wonocolo. The pandemic caused a decrease in demand, a drop in selling prices, lower production, and temporary closure of wells in Wonocolo traditional mining. In contrast, Covid-19 did not directly affect miners’ activities since the miners believed that Covid-19 could not infect them due to the very extreme condition in the mining area that the Coronavirus would not survive.
Life cycle assessment (LCA) of portland composite cement (PCC) 50 kg papercraft bag at PT. Semen Padang
Authors: Panggabean T , Aziz R , Dewilda Y 
Published: January 2021

Abstract
PT. Semen Padang produces several cement types, including PCC, with a total production of up to 6,568,354 tons in 2018. PCC production reached 54% of the total, where the size of 50 kg bag dominates the production with 93%, and the use of papercraft bags as the cement packaging is 78.39%. This research aims to analyze the environmental impacts of the production of 1 ton of PCC 50 kg paper craft bag using the LCA method. The gate-to-gate approach applies as the boundary, ranging from raw mill till packing unit. The impact assessment method uses IMPACT 2002+ to assess the environmental impact of the production. The result shows that the highest environmental impacts are global warming, non-renewable energy, and respiratory inorganics, with the value amounted to 0.10884252 Pt. The process of calcination and coal used in the kiln, packaging transport by diesel-powered trucks, and electricity use is the main contributor to the impact value. In order to improve the PCC production, it is recommended to have an alternative fuel on the kiln unit using rice husks or Mischantus giganteus.
Construction of co-culture of microalgae with microorganisms for enhancing biomass production and wastewater treatment: a review
Authors: Padri M , Boontian N , Piasai C , Tamzil M S 
Published: January 2021

Abstract
The development of microalgae cultivation in wastewater has been explored for years. Several wastewaters and nutrient sources related to biomass generation have been combined in recent years. On the other hand, several factors seem to reduce the possibility of industrialized this concept shortly. The growth rate and harvesting cost of the algae are often pointed as the leading cause of the gap for industrialization of this concept. In order to counteract these problems, constructing microalgae in the form of co-culture consortia with microorganisms, such as bacteria and yeast, have been reported to enhance the production of biomass under a short period of cultivation. This review highlights the strategies to combine microbial strains and microalgae for improving the process of biomass generation based on the comparison of the productivity of single and consortium of microalgae cultivation. Subsequently, mechanisms to enhance microalgae growth are scrutinized based on their interaction. Furthermore, critical factors regarding the construction of the consortia are discussed. Eventually, identifying gaps in this concept is displayed to describe the path of future focuses in this potential field.
The study on the linkage between pollution load and water quality index of the Cidurian river - a case study of Serang District segments
Authors: Pemulasari L , Kurniawan B , Maryani Y 
Published: January 2021

Abstract
The increasing population and activities carried out on the Cidurian River banks impact increasing pollutants that enter the river to decrease river water quality. This study aims to determine the effect of the river’s pollution load from domestic, agricultural, and livestock sectors on the Cidurian river water quality index. Calculation results show that the Cidurian River Water Quality Index ranges from -59 to -14, heavily polluted to moderately polluted with heavily polluted locations in Kopo District. Likewise, with the calculation of pollution load, the highest value of pollution load is in Kopo District, with the domestic sector’s ratio 56%, agriculture 16.54%, and livestock 27.46%, respectively. Based on these calculations, it can be concluded that the Cidurian River Water Quality Index in the Serang Regency segment is strongly influenced by pollution load from the domestic sector compared to the agricultural sector and livestock sector in all monitoring locations. Hence, it is necessary to construct and operate a domestic wastewater treatment plant in densely populated areas, especially in Kopo District, to reduce the domestic sector’s pollution load, which is expected to increase the Cidurian River Water Quality Index.
Identification of flood vulnerable zones in Batu Ampar Village, Balikpapan City using Geographical Information System Methods
Authors: Harfadli M M , Ulimaz M 
Published: January 2021

Abstract
Balikpapan is one of the cities that is vulnerable to flooding. One of the areas that often experience flood problems is Batu Ampar Village, in which some of its areas are basin areas so that it is vulnerable to flooding. Batu Ampar Village is a trade and service center, as well as a regional education center. The threat of flooding will greatly affect the sustain of the economic aspects. The purpose of this study is to find the vulnerable flood zones in Batu Ampar Village. The method used in this study is to use the Weighted Product method for the parameters used. Then making overlay maps will be using the ArcGIS 10.2.1 software. The overlay results will show the classify of vulnerable flood zones in Batu Ampar Village. This research has resulted in four classifications of vulnerable flood levels in Batu Ampat village. They are not vulnerable, less vulnerable, vulnerable, and very vulnerable. Highly vulnerable areas that describe frequent floods have a weighting value of more than 37 with an area of 1.32 km2. The vulnerable flood areas were located in Km. 4 (RT 41); Social housing (RT 28 and RT 48) was based on a field survey.
Impacts of zeolite activation temperature and grain size toward bioretention system efficiency in removing Pb and Zn pollutant in stormwater runoff
Authors: Martama E , Suwartha N 
Published: January 2021

Abstract
Stormwater runoff can be utilized as a clean water supply through a simple treatment technology such as a bioretention system. However, this water treatment efficiency is influenced by various factors. Previous research showed that although the bioretention system had combined with a plant and media composition, effluent concentration still exceeds the quality standard. This research aimed to improve the bioretention efficiency in removing heavy metal Pb and Zn in stormwater runoff. Three variations of bioretention were prepared, with the same combination of 2 types of plants (Chrysopogon zizanioides and Iris pseudacorus) and media composition (zeolite: quartz: compost: soil = 6:2:1:1). The zeolite activation temperatures and grain sizes simulated with three discharges variation of initial Pb and Zn concentration of synthetic stormwater runoff. The results showed that modified bioretention produced higher Pb removal efficiency (99.95% on average) and Zn (98.89% on average). Besides, the effluent concentrations have met the water quality standard following Government regulation No. 82/2001. In conclusion, the higher temperature of activated zeolite combined with smaller grain size significantly enhance the removal efficiency of Pb and Zn in stormwater runoff.
Correlation with dust exposure rice milling worker’s lung function capacity in Sub-District Kerjo
Authors: Suryadi I , Matin H H A , Suhardono S , Rinawati S , Rachmawati S , Kusumaningrum L 
Published: January 2021

Abstract
Workers in the rice mill in Kerjo Subdistrict are at risk of lung function disorders due to dust exposure from milling activities. Dust exposure is a risk factor for impaired lung function. This study aims to see the correlation between environmental dust exposure and mill workers’ pulmonary function capacity. The study was conducted with rice milling workers in Sub District Kerjo. The research method was observational and crossed sectional. The total sampling technique was used to calculate the number of samples. Measuring dust with a high volume sampler is based on the guidelines from SNI 16-7058-2004. Lung function capacity was measured by spirometry, and the questionnaire assessed other variables. The results showed a significant relationship between dust exposure (p = 0.001; r = -0.648) on lung function capacity, where dust exposure had a strong correlation and had a negative direction. Workers should use PPE during work to minimize the risk of exposure.
Settlement infrastructure management for universal access in Ngantang District, Malang Regency, Indonesia
Authors: Elya N , Ari I R D , Hariyani S , Aji B S 
Published: January 2021

Abstract
The pillars of sustainable development do not look at the three main pillars, namely economic, social and environmental. Sustainable Development Goals (SDGs) are divided into 17 goals to be achieved by 2030, one of which is the sixth goal to ensure sustainable clean water and sanitation management for all. The infrastructure problem related to sanitation in Ngantang Regency is the community’s low awareness to adopt a clean and healthy lifestyle, which is the main cause of problems with wastewater, garbage, or drainage in settlements. Fits to target of 100-0-100 Universal Access. The role of government and society is important in meeting the goal of universal access. Measurement of participation in implementing universal access priority handling uses Social Network Analysis (SNA), which is differentiated by pre-activity, activity implementation, and post-activity. The final result of this research is the settlement from the perspective of social conditions through measuring the level of participation, the value of relationship density, and finding a central actor who plays a role in bridging the community and government in implementing universal access programs.
Methane gas production from a mixture of cow manure, chicken manure, cabbage waste, and liquid tofu waste using the anaerobic digestion method
Authors: Arifan F , Abdullah  , Sumardiyono S 
Published: January 2021

Abstract
Biomass is valuable alternative energy worldwide as a substitute for fossil fuels can be converted into various forms of usable energy such as heat, steam, electricity, biogas, and liquid transportation biofuels. Cabbage waste, tofu liquid waste, cow dung and chicken manure is dangerous for the surrounding environment, which produces CH4 gas and has quite high BOD and COD values. This liquid waste has an amount of COD, suspended solids, and a high total solids content. One solution to overcome this pollution is by processing the waste into biogas, especially methane gas. The material will be transformed into methane gas by fermentation through the anaerobic digestion method. Before converting into biogas, initial characterization will be carried out in total C content, total N, COD, and C/N ratio. Then, from the biogas produced, the maximum data obtained is in variable B4 (55% cow dung: 15% chicken manure: 15% cabbage waste: 15% liquid tofu waste) with a total amount of gas of 7140 ml. This shows that tofu liquid waste can increase the potential amount of biogas produced.
Remote sensing-based spatial distribution of rice crop production and varieties in Cidahu Sub-District, Sukabumi Regency
Authors: Lestari S , Shidiq I P A , Rokhmatuloh  , Supriatna  
Published: January 2021

Abstract
Paddy (Oryza Sativa, sp.) is the main food commodity of most Indonesian. Generally, Indonesia has several rice crop varieties, which are selectively planted by farmers to increase rice crop production value. Recorded in 2019, Cidahu has a relatively high value of paddy rice production of 20.721 tons. One effective way of monitoring rice crops is by utilizing remote sensing technology, both radar and optical imagery. Radar and optical datasets are very potential to be applied in tropical and sub-tropical regions, which are prone to cloud-cover. The combination of the two complement each other in increasing the accuracy of classification. This study aims to analyze the spatial phenology of paddy, map the distribution patterns of paddy rice varieties, and analyze rice crop production’s spatial patterns using Sentinel-1 and Sentinel-2 imageries in Cidahu sub-district, Sukabumi Regency. The combination of polarization from SAR and vegetation index from optical images are used to determine the planting stages of paddy, which then serves as a guide for identifying rice varieties. The paddy stages are categorized into land preparation, vegetative, generative, and maturative. The yield from the 3,443 hectares of harvested area is 20.000-21.000 tons per hectare.
Conversion of coal fly ash into advanced crystalline materials
Authors: Kurniawati M , Azhari N J , Kadja G T M , Mukti R R , Notodarmojo S 
Published: January 2021

Abstract
In recent years, coal fly ash disposal has become one concerning environmental problems in Indonesia. Although coal fly ash is remains categorized as hazardous solid waste in several countries, it is also widely known as a valuable material used in various fields, including as a precursor for the synthesis of advanced crystalline materials such as zeolite and geopolymer. Previous studies mainly focused on the utilization of coal fly ash originated from the thermal power plant. This research done to acknowledge the potency of coal fly ash originated from the textile industry to be further converted into new advanced materials through several procedures, such as (1) modification using NaOH solution (FA-Na), (2) synthesized into geopolymer (Geo), and (3) synthesized into zeolite-A (FA-LTA). Characterization of synthesized products conducted using various techniques, i.e., X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), and cation exchange capacity (CEC). The results show that increasing crystallinity, specific surface area, and CEC in the samples are directly proportional to the increasing alkali concentration used. This research has proven that coal fly ash originated from the textile industry and could also synthesize zeolite and geopolymer.
The existence of a shortcut as an urban space system to support physic and mental health
Authors: Harani A R , Atmodiwirjo P , Yatmo Y A , Riskiyanto R 
Published: January 2021

AbstractThis paper investigates the role of shortcuts as a system in urban space to support the creation of a healthy city. In general, shortcuts can be understood as a form of connectivity in urban spatial systems. However, in particular, this paper explores the presence of shortcuts as part of a system that can improve physical and mental health. Health is one of the factors that are considered in today’s urban design. It is believed that the development of walkability in urban spaces can improve the community’s physical health. Previous studies have developed several forms of walkable urban spaces and physical activity benefits in urban spaces. Meanwhile, Indonesia’s shortcut character has its peculiarities because it includes social activities that present a sense of security, intimacy, and belonging. It also affects the mental health of the local community. This paper shows another perspective that everyday life in micro-urban environments can be developed to support macro-healthy city design. Further, this paper reveals that tracing micro-spatial practices created by shortcuts in the urban space system can positively influence mental and physical health.
Evaluation of community-based water supply system in Krembung, Sidoarjo
Authors: Marsono B D , Nirwisaya P M 
Published: January 2021

AbstractBased on the National Medium Term Development Plan (RPJMN), access to drinking water is expected to reach 100%. However,PDAMDelta Tirta Sidoarjo has only been able to serve the drinking water by 37%. In concern to this fact, the Sidoarjo’s Government launchedPenyediaan Air Minum Berbasis Masyarakat(PAMSIMAS) in Krembung Sub-district. Therefore, to determine the condition and implementation ofthe PAMSIMASprogram, an evaluation through technical and non-technical aspects is needed to provide solutions and recommendations on improvingPAMSIMAS’performance. The data collection was conducted by doing surveys, water quality analysis in the laboratory, measuring water pressure using a pressure gauge manometer, and giving out questionnaires. The distribution system is continuous for 24 hours and serves 1.458 house connections. At its farthest point, the water pressure ranges from 4,80 – 7,50 mH2O. The water quality analysis showed that turbidity, color, iron, manganese, and total coliform did not meet the quality standard. About 47% of the respondents are interested in becoming customers. Factors that influenced the interest in becoming customers are water quality and limitations of the network. The solution and recommendations that can be applied are built a water treatment plant and developing new piping systems.
Filter performance evaluation of Karangpilang III drinking water treatment plant PDAM Surya Sembada Surabaya
Authors: Marsono B D , Camellia A 
Published: January 2021

Abstract
Due to uprating, decreasing the quality of the effluent filter and unstable backwash frequency on its unit filter per day result in the volatility of Karangpilang III water production quantity and quality. Two evaluations were conducted to determine the performance of the unit filter and its backwash process. The parameter used in the evaluation is turbidity. The first evaluation showed that (1) the turbidity of all units has complied with the national regulation. However, five units were found to not comply with the criteria from PDAM; (2) the ratio of backwash volume and water production indicated that the performance of filter number 5-10 was normal with a percentage between 3-7%; (3) only five units have fulfilled UFRV criteria being within the range of 300-500 m3/m2. Further assessment on filter numbers 2 and 10 was conducted using filter coring method. The loss of media, unstratified media, cracking, and air binging were seen on filter numbers 2 and 10. Based on the post-backwash turbidity value profile, removal and effluent turbidity of filter number 2 were better than filter number 10. Floc retention filter profile of filter number 10 showed different conditions in each sampling depth from 3 sampling points.
Persistence of carbaryl pesticide in environment using system dynamics model
Authors: Sunaryani A , Rosmalina R T 
Published: January 2021

Abstract
Carbaryl, one of the carbamate insecticides are used extensively for pest control in agriculture. The chemical is highly valued for its rapid action and relatively short environmental persistence. Because of its widespread and intensive use, residues of carbaryl have the potential to contaminate the environment. This study aims to formulate a system dynamics model to simulate a degradation process of carbaryl. Since carbaryl was not readily volatilizing, this study only estimates the concentration and degradation of carbaryl in soil and water. The result revealed that carbaryl degraded rapidly, with a half-life of 7 days in soil and two days in water. The model was validated with a laboratory experiment using solid phase extraction reversed-phase high-performance liquid chromatography to determine carbaryl concentration. 12.82 % percentage error compared to the experimental value indicated that the developed model’s prediction was acceptable. The model can be used to estimate the presence of carbaryl pesticide in soil and water. Findings from this study can be used to assess the fate and the impact of carbaryl pesticide in the environment.