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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

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.

The Effect of Phytoremediation Using Duckweed (Lemna minor) on Ammonia Levels in Catfish Farming Wastewater in Boyolali Prayogi, Eko; Indrawan, Muhammad; Hawali Abdul Matin, Hashfi
Waste Technology Vol 12, No 1 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.1.39-43

Farming activities, especially catfish Farming, as carried out by the community in Kampung Lele, Boyolali, Indonesia cannot be separated from producing waste. Water pollution caused by catfish farming waste can be identified through increased ammonia levels. This research aims to determine whether the density of duckweed (Lemna minor) can influence changes in ammonia levels in liquid waste from catfish Farming and to determine the ammonia levels in liquid waste from catfish Farming after treatment with duckweed. The research is phytoremediation research using duckweed. The research used a completely randomized design in data collection carried out with 6 variations (0 plants, 150 plants, 300 plants, 450 plants, 600 plants, 750 plants) for 15 days starting from the first day and continuing every 2 days. The repetition carried out in the research was 4 repetitions which were based on the Federer formula. The data obtained were analyzed using two way ANOVA analysis and further tested with Duncan's post hoc test using the SPSS application. The results obtained in the form of ammonia levels after treatment decreased, namely 0.6 ppm on A150, 0.5 ppm on A300, 0.5 ppm on A450, 0.45 ppm on A600, and 0.4 ppm on A750. The density of duckweed can influence changes in ammonia levels in liquid waste from catfish Farming, through two way ANOVA analysis which obtained a sig value. equal to 0.00 or < 0.05, then there is a difference in the average ammonia based on density and time, so that in Duncan's post hoc follow-up test we found variations in A750 on the 11th day with 0.475 ppm ammonia and A600 on the 15th day with ammonia 0.45 ppm meets quality standards.

Sustainable Batik Wastewater Treatment using Advanced PVDF/NiFe@SiO2 Nanocomposite Photocatalytic Membrane Kusworo, Tutuk Djoko; Budiyono, Budiyono; Sumardiono, Siswo
Waste Technology Vol 12, No 1 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.2.112-119

The primary concern associated with the Batik industry lies in the presence of pollutant dyes that contribute to environmental contamination. Addressing this issue involves exploring various wastewater treatment methods, with membrane technology being a viable approach. In this study, a photocatalytic material, NiFe@SiO2, synthesized through the sol-gel technique, was incorporated into a PVDF membrane. Characterization results from SEM surface, indicated that the PVDF/NiFe@SiO2 membrane displayed superior characteristics compared to other membranes. The addition of the NiFe@SiO2 photocatalyst increased membrane porosity, hydrophilicity, water absorption capacity, and affinity towards water molecules. The PVDF/NiFe@SiO2 membrane exhibited enhanced performance in terms of permeate flux, pollutant rejection, stability, recyclability, and durability. Notably, the fabricated photocatalytic membrane demonstrated superior antifouling performance and flux recovery capability when operating under UV radiation. The study also delved into the influence of wastewater pretreatment on antifouling membrane performance. The modified membrane successfully reduced fouling levels on the membrane by enhancing FRR from ~70% to ~90%. This insight into how pretreatment affects the antifouling properties of wastewater opens avenues for innovative solutions and enhanced design strategies to improve the efficiency and sustainability of wastewater treatment processes. Future research endeavors could focus on maximizing the potential of the bentonite adsorbent in wastewater pretreatment and exploring the full capabilities of the NiFe@SiO2 photocatalyst in enhancing the photocatalytic and antifouling performance of the membrane.

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

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.

Analysis of Behavior and Treatment of Mask Waste Impact of the Covid-19 Pandemic and Its Impact on the Environment Alim Andini Razes, Widita; Setyono, Prabang; Hawali Abdul Matin, Hashfi
Waste Technology Vol 12, No 1 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.1.44-51

The pandemic caused by Covid-19 has had various impacts on people's lives. One of these impacts is the use of masks when carrying out outdoor activities. Most people use disposable masks, so the amount of disposable mask waste has increased during the pandemic and post-pandemic. This research aims to find out whether people process disposable mask waste during the pandemic until post-pandemic. The research method was carried out using a non-probability sampling method using Google Form. Data analysis was carried out using Likert calculations and elasticity calculations. The results of the research show a decrease in people's behavior towards processing disposable mask waste during the pandemic to post-pandemic with E = 0.535, which means that people's behavior is inelastic.

Effect of Partial Replacement of Kaolin with Waste Sanitary Ware in the Production of Ceramic Socket Ologunwa, Temitope Peter; Hossanah, Clement
Waste Technology Vol 12, No 1 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.1.%p

The research investigates the utilization of waste materials from recycled sanitary ware in the manufacture of ceramic sockets. The debris is often thrown away in surroundings of building and land fills. However, they can be recycled to provide sustainable solution to the melting problems on wall plugs. In order to create the right ceramic materials for the research, raw materials like kaolin, ball clay, and feldspar are extracted from old ceramic sinks, toilets, and bathtubs. The research's goal is to use processed ceramic materials to address the melting problem with wall sockets. Additionally, it uses an experimental procedure to create ceramic sockets from waste sanitary ware and other materials. The materials are processed, mixed, pressed, dried, and fired to achieved the desirable result. Sanitary ware waste was used to replace kaolin at intervals of 5% variation. According to the outcomes of the tests, adding recycled sanitary waste to ceramic sockets enhances their physical, mechanical, and dielectric strength. The addition of sanitary ware waste has increased the dielectric strength property, compressive strength results as also shown the strength of sanitary ware wastes compare to that of kaolin. The findings have shed light on the viability and possibility of employing recycled sanitary ware waste products in the manufacture of ceramic sockets. It also meets up to the British Standard for plug and socket BS 1363, which has the ability to withstand high and low temperature for both residential uses 120-240v and industrial usages. The sample produced pass the least dieletric strength for any insulator at 3kΩ/mm resulting into a mega ohm (mΩ).

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

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.

Unleashing the Power of AI: Revolutionizing Plastic Waste Management for Sustainable Development in Developing Nations Solaja, Oludele Mayowa
Waste Technology Vol 12, No 1 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.1.%p

Plastic waste pollution poses a significant environmental challenge worldwide, particularly in developing countries like Nigeria, where limited waste management infrastructure exacerbates the problem. This paper examines the potential of artificial intelligence (AI) technologies to address plastic waste reduction in developing countries, with a focus on the Nigerian context. Through a comprehensive analysis of challenges, opportunities, case studies, policy implications, and recommendations, the paper highlights the transformative role of AI in waste management. Challenges such as infrastructure gaps, data scarcity, and ethical considerations are identified, alongside opportunities for innovation, efficiency, and sustainability. Case studies from developed and developing countries illustrate successful AI applications in waste collection, sorting, recycling, and pollution monitoring. Policy implications emphasize the importance of comprehensive legislation, investment in infrastructure and technology, public awareness, and cross-sectoral collaboration. Recommendations include extended producer responsibility policies, landfill bans, education campaigns, and international cooperation. The future of AI-driven plastic waste reduction in developing countries hinges on technological advancement, collaborative partnerships, increased investment, supportive policies, and regulatory frameworks. By harnessing the power of AI technologies and collective action, developing countries can address the plastic waste crisis, promote environmental sustainability, and foster a cleaner, greener future for all.

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

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%.

Design of Integrated pH-Water Level Sensors using Arduino Uno-ESP 32 Microcontroller for Integrated Rice-Fish Farming Waste Water Utilization Dhiya’ulhaq, Syaikha Butsaina; Ramadiani, Haliza; Kaladinanty, Malika Pintanada; Julianto, Mohammad Endy; Indahsari, Siti Rachmi; Suhendra, Ahmad Adi
Waste Technology Vol 12, No 2 (2024)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/12.2.52-59

Integrated Rice-Fish Farming System (IRRFS), a conventional rice, poultry, and fish farming system which is widely practiced in south asia, facing the serious obstacles amidst its advantageous contemption. The main challenge is inharmonious water uptake management as the side effect of its area arrangement and inappropriate water irrigation system due to the lack of technology application, leading to the chemical contamination and high water consumption. This paper develop an integrated pH and water level sensors using combined arduino uno-esp 32 microcontroller for the newly designed IRRFS (mina padi) concept and the new concept of IRRFS in terms of area arrangement restructuration with 1:500 diminution scale, aiming to overcome the pest and chemical contamination to the system and high water amount necessity. The integrated pH-water level sensor is designed to maintain daily water uptake of fish ponds and paddy fields to prevent harvest failure. The integrated sensor will instruct either 1st pump or 2nd pump to drain in or drain off the water from the system. The working accuracy is tested by both calibration and the prototype experiment, resulting in the simultaneity working ability of integrated sensors with 1st pump and 2nd pump which possess with high accuracy.

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Contact Name
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Contact Email
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Journal Mail Official
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Location
Kota semarang,

Jawa tengah

INDONESIA