Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

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.

tom Vol. 24, iss. 3

1--9

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.

Life Cycle Environmental Implications of Wastewater Treatment at an Academic Institution

100%

Septiariva I. Y. , Suhardono S. , Indawati L. , Suryawan I. W. K. , Wahyudi A. H. , Solichin S.

tom Vol. 25, nr 5

389--403

This study performs a life cycle assessment (LCA) on the wastewater treatment operations at Sebelas Maret University in Surakarta, Indonesia, with the goal of systematically evaluating the environmental impacts associated with its processes. LCA serves as a comprehensive method for assessing environmental impacts across all stages of a product’s life cycle, which includes goal and scope definition, life cycle inventory (LCI), life cycle impact assessment (LCIA), and interpretation. Utilizing this methodology, our analysis categorizes environmental impacts into three significant domains: human health, ecosystem quality, and resource depletion. The findings indicate that human health is the most impacted category, showing an effect of 0.275 disability-adjusted life years (DALY) -equivalent units. Resource depletion follows, measured at 0.193 DALY-equivalent units, and non-renewable energy consumption is quantified at 0.0214 DALY-equivalent units. To address these impacts, the study proposes several improvement strategies, such as adopting more sustainable clean water treatment technologies, capturing and utilizing methane gas through anaerobic digestion, and establishing green spaces for CO2 sequestration. These strategies aim to reduce the environmental footprint of the wastewater treatment process, moving towards more sustainable management practices.

Utilizing Pyrolysis of Plastic Debris for Refuse-Derived Fuel Production and Viable Substitute to Wood Debris

67%

Mutiara Sari M. , Inoue T. , Harryes R. K. , Septiariva I. Y. , Yokota K. , Notodarmodjo S. , Kato S. , Al Ghifari R. M. , Suhardono S. , Suryawan I. W. K. , Prayogo W. , Arifianingsih N. N.

tom Vol. 24, iss. 8

133--142

This research explores the viability of converting discarded Polyethylene Terephthalate (PET) plastic waste into a valuable resource through the implementation of pyrolysis and refuse-derived fuel (RDF) technologies. The objective is to assess the potential of PET charcoal waste as an efficient source for RDF generation, surpassing the energy recovery and recycling potential of PET waste. The study introduces three RDF variants: RDF PET100, RDF PET50, and RDF PET0. RDF PET100 is comprised entirely of PET charcoal, RDF PET50 combines 50% PET charcoal with 50% wood debris, and RDF PET0 consists entirely of wood debris. Comprehensive assessments of water content, ash content, and calorific value were conducted to evaluate the quality of these RDF formulations. Results indicate that RDF PET100 exhibits a water content of 2.63%, ash content of 0.73%, and calorific value of 5,976 MJ/kg. Similarly, RDF PET50 showcases a water content of 3.6%, ash content of 1.05%, and calorific value of 5,587 MJ/kg. RDF PET0 presents a water content of 7.51%, ash content of 1.36%, and calorific value of 4,198 MJ/kg. The outcomes underline the potential of PET plastic waste repurposing through RDF and pyrolysis techniques. Particularly, RDF PET100 emerges as a high-caliber fuel option characterized by its minimal water and ash content, coupled with a substantial calorific value. This innovation holds promise in mitigating plastic waste challenges, particularly pertinent in the context of Indonesia.