Wyniki wyszukiwania - Biblioteka Nauki

1

Pelletizing of Various Municipal Solid Waste: Effect of Hardness and Density into Caloric Value

100%

Suryawan I. W. K. , Fauziah E. N. , Septiariva I. Y. , Ramadan B. S. , Sari M. M. , Ummatin K. K. , Lim J.-W.

Ecological Engineering & Environmental Technology

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2022

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tom Vol. 23, iss. 2

122--128

EN

Density and hardness are physical parameters in the manufacturing of refuse derived fuel (RDF) pellets. In making pellets, a high heating value for the combustion system is desired. This research aimed to analyze the mixture of municipal solid waste to its density and hardness and study its correlation to heating value. The variable used in this research is a mixture of paper waste and garden waste and food scraps and garden waste. The density and hardness for the mix of paper waste and garden waste were 1970.6 to 2474.8 kg/m3 and 37.8–42.8 HA, respectively. The mixture of food waste and garden waste has density and hardness of 1822 to 2276.7 kg/m3 and 17.4–37.8 HA. The correlation between density and hardness on heating values did not reach a significance of 0.05, so there was no strong relationship between density and hardness on heating values.

2

The Effect of the COVID-19 Pandemic on Waste Management in the Eastern Tourism Regions of Java and Bali Islands

100%

Septiariva I. Y. , Sari M. M. , Istanabi T. , Suhardono S. , Prayogo W. , Suryawan I. W. K.

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tom Vol. 24, iss. 3

1--9

EN

The tourism sector is one of the sectors that has been negatively affected by the COVID-19 pandemic. Increased waste generation is a significant problem that tourist areas must face during the COVID-19 pandemic. Therefore, to reduce the impact, research was carried out on waste management before and during the pandemic in regional tourism areas, especially in the eastern part of Java and Bali. This study aims to analyze the changes and composition of waste and during the COVID-19 pandemic in tourist areas in the Eastern Tourism Areas of Java and Bali. Collecting, processing data, and statistical analysis carry out the research method. Based on the study results, the waste generation generated in eight eastern regencies of Java and Bali experienced a change between -5.67% to 1.82%. Plastic waste increased by 27.61% during the pandemic, while mask waste increased by 1.23% in one area. Waste management also changed from -0.011% to 1.821%. The analysis results using ANOVA showed that the COVID-19 pandemic significantly affected the amount of waste generated by the eight tourist areas, with the main contribution caused by an increase in mask waste.

3

Transforming Bubble Wrap and Packaging Plastic Waste into Valuable Fuel Resources

100%

Sari M. M. , Inoue T. , Rofiah R. , Septiariva I. Y. , Prayogo W. , Suryawan I. W. K. , Arifianingsih N. N.

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2023

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tom Vol. 24, nr 8

260--270

EN

This study aimed to investigate the potential of plastic waste, specifically bubble wrap and packaging plastic, as a fuel source through pyrolysis process. The samples were analyzed using FTIR and GC-MS. The results showed that both samples contained alkanes and alkenes, with hydrocarbon fractions like those found in gasoline, kerosene, and diesel fuel. The pyrolysis process resulted in hydrocarbon fractions ranging from light to heavy fractions. The bubble wrap sample showed the highest percentage of hydrocarbon fraction in the kerosene range (C10–C13), with an area of 19.23%. In contrast, the packaging plastic sample showed the highest percentage of hydrocarbon fraction in the diesel range (C14–C20), with an area percentage of 19.67%. The calorific value of the pyrolysis products was also determined, with the bubble wrap sample having a higher value than that of gasoline, while the packaging plastic sample had a value close to that of kerosene. The results of this study suggest that plastic waste has the potential to be converted into fuel, which can contribute to sustainable development by reducing dependence on fossil fuels and reducing plastic waste. However, further refinement of the pyrolysis products is needed to meet commercial fuel standards.

4

Comparison of Solid Waste Generation During and Before Pandemic Covid-19 in Indonesia Border Island (Riau Islands Province, Indonesia)

100%

Sari M. M. , Septiariva I. Y. , Istanabi T. , Suhardono S. , Sianipar I. M. J. , Tehupeiory A. , Suryawan I. W. K.

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2023

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tom Vol. 24, iss. 2

251--260

EN

Waste in the archipelagic border area must be appropriately managed to maintain diplomatic relations. Indonesia’s Riau Islands Province is an archipelagic region in Indonesia with limited solid waste infrastructure development. The capacity of the waste infrastructure depends on the rate of waste generation and is influenced by the socioeconomic conditions of the community. This study aims to study the model for estimating the rate of waste generation in the Riau Islands. This study uses data before and during the Covid-19 pandemic in 2019 and 2020. The estimation model uses a multiple linear regression model with independent variables such as gross regional domestic product, access sanitation, total population, and human development index. The fixed variable is the incidence of waste generation rate. During the pandemic Covid-19, the generation and composition of waste in the Riau Islands Archipelago did not experience significant changes, so the waste generation and composition characteristics are the same. However, the variable human development index (0.053) and the population (0.012) significantly increase the waste generation rate. The gross regional domestic product (0.017) negatively correlates, reducing the waste generation rate. The Riau Islands, which has an ocean area of 96%, is a source of life and significant to manage because the waste can be released into the ocean. Therefore, management from sources through policies considering the gross regional domestic product, total population, and human development index needs to be considered to reduce waste generation in the archipelago.