Indonesian Journal of Urban and Environmental Technology
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ANALYZING THE FACTORS THAT AFFECT THE AMOUNT OF PLASTIC WASTE
Get PDFOne of the biggest environmental issues facing the planet today is plastic garbage, which was created by people and has an effect on them as well. Although though governments have implemented policies, rules, and other initiatives to increase public awareness of and engagement in decreasing plastic trash, the statistics has not changed, and this amount keeps rising every year. Several nations appear to be having trouble solving this problem. In addition, according to the World Bank, the country produces more plastics the wealthy its citizens are. By evaluating behavior and educating people, culture and education can be the answer to this problem. As people get more educated, their awareness of and care for the environment increases. The relationship between each of these factors—culture, education, national income, and government role and environmental problems might potentially help minimize plastic waste. Consequently, the goal of this study is to pinpoint the variables that may have an impact on the volume of plastic garbage and examine how these variables may affect the quantity of plastic waste in various nations. Hofstede\u27s national culture dimension (Power Distance, Collectivism and Individualism, Masculinity and Femininity, Uncertainty Avoidance, Long-term Orientation and Short-term Orientation, Indulgence and Restraint), wealth per capita, education, and the government\u27s plan and policy on sustainable consumption are the variables that will be examined. In this study, worldwide data for the year 2018 is gathered from 66 different nations utilizing secondary sources, and the data is then analyzed using the Multiple Linear Regression approach. According to the findings, there is a strong correlation between individualism and collectivism and the volume of plastic garbage. The results of this study should help each nation\u27s government reduce the quantity of plastic garbage that is generated
EFFECT OF RAINFALL ON THE CHEMICAL COMPOSITION OF RAINWATER IN MONITORING ACID DEPOSITION IN GREATER BANDUNG
Get PDFAim: The study aimed to investigate the impact of rainwater on the acidity levelsto monitor acid deposition and identify sources of pollutant that affect the acidity concentrations of rainwater. Methodology and Results: One unit of rainwater sampler in each location was employed, andsamples were taken to the National Research and Innovation Agency laboratory (BRIN) for analysis of rainwater quality including acidity/pH degree, conductivity, and ion concentrations. The results show that high rainfall intensity (>300 mm/month) in April and December 2019 led to a decrease in electrical conductivity (<10 mS/cm) and ion compounds (>200 μmol/L) of rainwater, likely due to the dissolution/washing process of anions in the air during the rainy season and acid and alkaline neutralization in the dry season. The most identified chemical compounds were ammonium (NH4+), sulfate (SO42-), nitrate (NO3-), and salt (NaCl). Conclusion, significance, and impact study: Based on back-trajectory projections, the decline in rainwater quality was attributed to both local emissions (transportation, industry, agriculture, and waste burning) and long-range sources (earth crust, oceans, coastlines, marine activities, and anthropogenic and forest fires in the Australian territory)
CRITICAL SUCCESS FACTORS FOR MODULAR CONSTRUCTION ON HIGH-RISE RESIDENTIAL BUILDINGS BASED RISK MANAGEABILITY TO INCREASE PROJECT TIME PERFORMANCE
Get PDFInternational Construction Costs published in Comparison 2020 continued to increase as an impact of the Covid-19 pandemic, The modular system is considered able to answer the problems of increasing costs. Although modular construction has been widely applied to low-rise buildings, application in high-rise buildings remains limited, less than 1% worldwide. The need for residential high-rise building applying modular construction in Indonesia becomes important. The interdependence between parties in modular projects is greater than in conventional methods. Unavailability of design guidelines hinders the construction industry in implementing modular technology. The purpose of this study is to analyze the critical success factors for modular construction of residential high-rise buildings applying risk-based management to improve project time performance. Forty-one Indicators were drawn from literature reviews and specialist interviews to conduct a sustainability evaluation. The survey was submitted to case project developers, designers, supervisors, and contractors in Indonesia, thereafter statistically analyzed using SPSS and risk management analysis with three stages: risk sources, risk drivers and risk causes. Critical success factors for drawing approvals have a considerable influence on modular construction among 15 other factors, followed by supply chain and design standardization. It is necessary to mitigate these risks to improve project time performance
THE RECYCLING POTENTIAL OF SOLID WASTE IN JATINEGARA SUB-DISTRICT, EAST JAKARTA
Get PDFAim: This study aims to analyze the recycling potential of solid waste in Jatinegara sub-district as a basis for optimizing solid waste management with the 3R principle. Methodology and Results: The sampling method to calculate the waste generation rate and composition was based on SNI 19-3964-1994. The sampling results showed that the average waste generation of Jatinegara sub-district was 0.22 kg/person/day or 2.02 liters/person/day. With a population of 328,345 in 2020, the waste generation is 663,055 L/day or 663.05 m3/day. The waste composition comprises 55.02% organic waste and 44.98% non-organic waste. The composition of organic waste that has the potential to be reprocessed is 38.52%. The potential for recycling non-organic waste is determined by identifying the types of waste that waste banks can accept. The composition of non-organic waste that can be recycled is 26.11%. Non-organic waste that has the potential to be sold to waste banks is 96.26% of total plastic waste, 100% of paper waste, 100% of metal waste, and 100% of glass/glass waste. Conclusion, significance and impact study: The total waste that can be recycled in Jatinegara sub-district is 64.62%, and the residue generated is 35.38%. Recycling can reduce waste to 372.76 m3/day
POTENTIAL OF BLACK SOLDIER FLY (BSF) IN REDUCING MUNICIPAL FOOD LOSS AND WASTE (FLW) AT TAMAN SARI DISTRICT, WEST JAKARTA
Get PDFBlack Soldier Fly (BSF) larvae are known to have the ability to process food loss and waste and reduce the weight of food loss and waste, by producing decomposition products that have beneficial values. Food loss and waste needs to be reduced to reduce the burden of waste entering the Final Disposal (TPA). Aim: The purpose of this study was to determine the ability of BSF larvae and to determine the quality of the decomposition results in processing food loss and waste in the Taman Sari District on a laboratory scale. Methodology and Results: Taman Sari Distrisct is a high dense populated area Total days of bioconversion activity is 12 days, giving back 1,000 grams of municipal waste organic, containing food loss and food waste, according to variation is given repeatedly on the 1st, 5th, and 8th days for each 12 sample code. The amount of 5 days old (5-DOL) maggot used for each sample code is 30 grams. Conclusion, significance, and impact study: The percentage reduction in processing from 3 kg of food loss and waste can reach 86% with the average residue produced in the form of 415.67 grams of solid compost and 221.7 grams of prepupa. Bred prepupa will evolve into several stages: pupa, fly, egg, baby larvae, and 5-DOL for 57 days on its life cycle
RHEOLOGICAL STUDY ON THE PARAMETERS AFFECTING THE VISCOSITY OF THE GREEN SOLUTION CONSISTING SLS AND LTTM
Get PDFEnhanced Oil Recovery (EOR) is known to effectively improve oil recovery by producing the residual oil saturation in a reservoir. Many chemicals for injected fluid in EOR are synthetic and harmful to the environment. Aims: This study aims to characterize a newly developed green solution consisting of Sodium Lignosulfonate (SLS) and a Low Transition Temperature Mixture (LTTM) for injection agent. Methodology and Results: The concentration of surfactant was defined using weight percentage, which was calculated from the portion of the total weight of LTTM. The characterization was approached by analyzing the behavior of the green solution based on the power law analysis of the rheological measurement. The analyses of value, viscosity, shear rate, and shear stress were carried out. Increasing in viscosity was caused by the additional molecular mass of sucrose in the solution. This study found that the SLS concentration and LTTM ratio affects the rheological behavior of the green solution. Conclusion, significance, and impact study: According to the results, adding the SLS concentration increases the probability of the green solution becoming an EOR agent by showing shear-thinning behavior. Further studies are required to ensure the feasibility of the green solution during the injection period and the propagation in the reservoir
DETERMINATION OF BATTERY WASTE MANAGEMENT STRATEGY IN THE IMPLEMENTATION OF ELECTRIC MOTORCYCLES IN DENPASAR CITY
Get PDFElectric two-wheelers are becoming increasingly popular in Indonesia, particularly in the city of Denpasar; due to government regulations and social action, programs growing the number of electric motorcycles will impact the generation of toxic and hazardous waste in the form of used batteries which can cause environmental pollution if not managed properly. In connection with the establishment of a lifecycle-based business ecosystem and reduction of pollution risks, the thing that needs serious attention is the development of independent battery waste management facilities in Denpasar City. Aim: In this regard, a study was conducted on the development and management strategy of used battery waste for electric motorcycles in Denpasar City. Methodology and Results: Data was analyzed on primary data collected through in-depth interviews with key persons and questionnaires and secondary data obtained from related institutions. The development strategy was directed at six indicators, i.e., economy, interest, infrastructure, media, technology, and battery waste management facilities. By considering the six strategy indicators, the location of battery waste management facilities from four sub-districts in Denpasar City was determined using the Analytic Hierarchy Process (AHP) method, where the South Denpasar Sub-district was obtained as the top priority with a value of 0.403. Conclusion, significance, and impact study: This strategy is expected to be a direction for implementing electric motorcycle vehicles in Denpasar Cit