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Waste Technology
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
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Articles 5 Documents
 1 
Search results for , issue "Vol 11, No 2 (2023)" : 5 Documents clear
Existing Governance Structures for Sustainable Solid Waste Management in Kisii Town, Kenya. Naftal, Mecheo Omonywa; Mutua, Dr. Bessy Kathambi; Moronge, Dr. James M.
Waste Technology Vol 11, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.102-111

Abstract

Solid waste management (SWM) is a major challenge in many urban areas in developing countries. The governance structures in the management of solid wastes are overwhelmed to sustainably manage them. This study sought to assess the governance structures for sustainable solid waste management in Kisii town. Study was anchored on the zero -waste theory and the circular economy theory. The study engaged a cross-sectional research design. The sample size was derived from the sampling formula of Yamane. Data collection methods encompassed questionnaires and interview schedules using a mobile software of KOBO for administration of questionnaires. Data from interviews was analyzed using both descriptive and inferential analysis; data from the questionnaires was coded and analyzed using softwares as KOBO, SPSS and excel. The results indicate that: there exist governance structures in SWM in Kisii town known at 45% by the residents, there are both national and county laws, policies and regulations. The most popular structures are; EMCA regulation to the residents is on-source separation at 78.3%, polluter pay principle at 20.3% and colour code separation the least 15%. Of the NEMA laws; EPR is known to the respondents at 67.1%, waste reuse and recycle 30% and waste valorization (2021) not common at 21.6%. The respondents are not aware of the existing county by-laws; only 46.7% are aware of the on-source separation policy. In conclusion, there exist governance structures; guided by the national EMCA 1999 laws, NEMA policies and regulations and Kisii county by-laws and policies. The resident’s knowledge concerning the existing laws and policies is limited. Its therefore recommended that, Public participation should be incorporated in all decisions, laws, policy and regulation. Also, public education through the media, banners, posters, public baraza and other methods be carried out to sensitize the general public SWM governance structures.
Analysis of Basic Level Students' Knowledge of Hazardous and Toxic Waste Yhoviera Farraz Muali, Aiko; Desti Ramadhani, Danila; Aulianissa Ainaya, Fadia; Muhammad, Farhan; Rachmalia, Fayza; Khairunnisa, Hasna; Hawali Abdul Matin, Hashfi
Waste Technology Vol 11, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.120-124

Abstract

Toxic hazardous material waste (Waste B3) is defined as waste that contains harmful and toxic substances, so that it can directly or indirectly damage the environment, disrupt health and threaten the survival of humans and other organisms. Students' awareness of B3 waste management can be seen through the level of knowledge they have. The level of knowledge is important in shaping a person's attitude or behavior towards the surrounding environment. The purpose of this study is to find out how much information or knowledge is owned by students of Sebelas Maret University (UNS) related to B3 waste management. The data analysis method used in this study is a descriptive analysis method in the form of a desriptive explanation of the data obtained about uns students' knowledge of B3 waste. The data collected in the form of primary data is conducted through interviews and questionnaires and secondary data. The results showed that the knowledge of Sebelas Maret Student University students related to B3 waste management is quite good, it can be seen through the results of questionnaires and interviews where there are 38 who already know and understand about B3 waste supported by the answers of 45 respondents who already understand the B3 waste itself, and there are 41 respondents who already know how they process B3 waste, namely by handing over B3 waste to the sewage treatment plant.
Integrated Solid Waste Management for Closed Community: An Experiment on Jahangirnagar University Campus Hossain, Md. Jakir; Mahmud, Md. Munir; Moinuddin, Golam
Waste Technology Vol 11, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.75-90

Abstract

This study examines community participation in integrated solid waste management (ISWM) at Jahangirnagar University in Bangladesh. The university faces significant challenges in waste management, with negative social, environmental and economic consequences. The goal is to identify barriers to community involvement in ISWM and provide recommendations for enhancing engagement. The research uses a mixed-methods approach, surveying 397 respondents using cluster random sampling from the university's population of 20,000. Data collection methods include interviews, observations, focus groups, and document analysis. The findings highlight obstacles to community participation, such as limited community empowerment, mobilization, organization, and resource coordination. Household waste segregation is practiced by only 30% of respondents. However, 74% of participants express willingness to oversee door-to-door waste collection and dispose of waste at designated points, influenced by socioeconomic factors. Non-compliance with ISWM regulations is observed in 26% of respondents, and 12% lack sufficient knowledge about ISWM, indicating a need for improved organization and coordination. Additionally, some university authorities rely on outdated methods, resulting in weak enforcement of environmental regulations. Ineffective policies exacerbate the situation, failing to align with the market economy. The study recommends fostering cooperation between university authorities and the community, revising and enforcing regulations, and emphasizing waste generators' responsibility for proper disposal. Addressing these challenges can significantly improve solid waste management and environmental outcomes at Jahangirnagar University.
Awareness of Medical Mask Waste Management for Young People on Central Java and Special Region of Yogyakarta Provinces During the Covid-19 Pandemic Garnis Perwitasari, Iyualevi; Saniscara Nugraheni, Rachel; Nur Fadilah, Rizky; Sagita Armadhan, Winda; Shafa Alfitra, Zhalzabilla; Hawali Abdul Matin, Hashfi; Rachmawati, Siti
Waste Technology Vol 11, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.91-96

Abstract

The Covid 19 pandemic that hit Indonesia caused the problem of increasing medical mask waste. Medical masks are included in B3 waste because they are infectious. Therefore, special treatment is needed to mask waste, so it doesn't transmit disease. This study was conducted to determine the awareness of medical mask waste management in young people, especially those who live in the provinces of Central Java and the Special Region of Yogyakarta. The research was conducted by distributing questionnaires to respondents aged 17-24 years. This research used descriptive analysis with a quantitative approach. Based on the results of the study, it is known that most of them already know the meaning of B3 waste, where 65% of respondents can answer questions correctly about the type of waste and about 95% of respondents considered medical mask waste to be harmful to the surrounding environment. Based on the results of data analysis, it is known that the respondents have shown awareness of the dangers of mask waste, but from the results of the questionnaire, it is also known that the respondents do not have the awareness to process waste. From the 151 respondents, there were only 4 people who did the processing. So that it can be seen that the level of awareness of medical waste management in young people, especially those who live in the Province of Central Java and the Special Region of Yogyakarta is still very low. The results of the questionnaire also show that there are still few TPS specifically for hazardous waste around the settlements.
Effect of Water Content on Free Fatty Acid Value Reduction in Nyamplung Crude Oil (Calophyllum Inophyllum L.) Extracted by N-Hexane Solvent and Using Factorial Design Experiment Maulidinoor, Farah Salsabillah; Broto, Wisnu
Waste Technology Vol 11, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.97-101

Abstract

This study aims to determine the effect of water content on free fatty acid levels in nyamplung (Calophyllum inophyllum L.) seed oil. Nyamplung fruit seeds have a relatively high oil content ranging from 40%-73%, which can be used as a biodiesel raw material. Nyamplung seed oil has a high FFA content that ranges from 15%-30%. The process of extracting nyamplung seed oil is done by the soxhletation method because it is considered the most efficient and uses nhexane solvent, which has non-polar properties and can increase oil yield (more than 50%). This study will use the factorial design level 2 method to determine the most influential process variables to produce optimum operating conditions in making nyamplung seed oil with the lowest FFA content. The variables used in this study are moisture content (8% and 12%), particle size (15 mesh and 25 mesh), and the ratio of materials and solvents (1:1 and 1:3). The analysis results showed that water content had the most significant influence on free fatty acid content with a value of 0.25 and the lowest free fat content of 13.30%.

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