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Waste Technology
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Computer Science & IT Other
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Articles 7 Documents
 1 
Search results for , issue "Vol 12, No 1 (2024)" : 7 Documents clear
Extraction of Crude Sunflower Seed Oil as a Vegetable Oil Rich in Antioxidant using the Microwave Assisted Extraction (MAE) Method Broto, Wisnu; Subagyo, Meylinda Dita Anggi
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

Abstract

Oil is a basic necessity in every county, palm oil is an oil that is in high demand so the palm oil industry has an impact on world deforestation. One raw material that can be substituted is sunflower seeds, with a high antioxidant content obtained from vitamin E and selenium, amount 41.08 mg/100 gr. So we eill get a sunflower seeds oil product that is rich in antioxidants, which is beneficial for health. Extraction of sunflower seed oil was carried out using the Microwave Assisted Extraction (MAE) extraction method with N-Hexane solvent. This study will use the factorial design level 23 method to determine the most influential process variables to produce optimum operating conditions in making sunflower seed oil with Quicker Method analysis where the changing process. The variables extraction are temperature (T), time (W), and solvent volume (V), and the most influential process variables were obtained, amount extraction time of 9 minutes, temperature of 60°C, and solvent volume of 500 mL producing an oil yield of 53.6%, viscosity of 53.76 cSt, density of 0.919 g/cm3, water content of 0.23% b /b, FFA of 0.32% w/w, and IC50 value of 87.613 is classified as a strong antioxidant.
Evaluation of Water Pollution Due to Tofu Industrial Waste: Studies Case and Strategy Countermeasures Hanifta Man Andira, Muhammad; Fajri, Roifah; Enova Rahmadhani, Sakina; Hasna Rosyida, Sharifah; 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: 10.14710/12.1.16-19

Abstract

Tofu waste is the remaining or unused waste material from the tofu making process. Krajan Village is one of the areas where tofu industry can easily be found around it. The community who are tofu industry players usually dump their waste into the river. Liquid and solid waste from the tofu industry can reduce environmental quality and affect living things if not managed properly before being discharged into the drain. In addition, polluted river water can contain hazardous substances that have a negative impact on flora and fauna and increase the risk of disease for people whose lives depend on river water for their daily needs. Therefore, this waste must be treated first to meet the appropriate water quality standards before being discharged into the airway. The purpose of this study was to determine the level of air pollution produced by the tofu industry in the river, identify the main sources of pollution in the Krajan River, and develop appropriate and appropriate mitigation strategies to overcome pollution problems on its way to its destination. The results of the study showed that the TDS, temperature, and pH parameters that had been tested in the Krajan River were below the reference quality standard limits, namely the Central Java Provincial Regulation Number 5 of 2012 concerning Wastewater Quality Standards. However, residents around the river still feel the impacts, such as the unpleasant odor that is often smelled in the air and dust from tofu industry activities that disrupt daily activities due to river pollution from tofu industry waste, household waste, and livestock waste that is dumped directly without prior processing.
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

Abstract

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

Abstract

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.
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

Abstract

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

Abstract

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).
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

Abstract

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.

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