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Hashfi Hawali Abdul Matin, Hashfi
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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.
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.
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.
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.
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.
Co-Authors Alim Andini Razes, Widita Aulianissa Ainaya, Fadia Desti Ramadhani, Danila Enova Rahmadhani, Sakina Fajri, Roifah Garnis Perwitasari, Iyualevi Hanifta Man Andira, Muhammad Hasna Rosyida, Sharifah indrawan, muhammad Khairunnisa, Hasna Muhammad, Farhan Nur Fadilah, Rizky Prabang Setyono Prayogi, Eko Rachmalia, Fayza Sagita Armadhan, Winda Saniscara Nugraheni, Rachel Shafa Alfitra, Zhalzabilla SITI RACHMAWATI Yhoviera Farraz Muali, Aiko