Article Per Year (5 Year)
p-Index From 2021 - 2026
0.92
P-Index
This Author published in this journals
All Journal Waste Technology
Hashfi Hawali Abdul Matin
Environmental Science, Faculty of Mathematic and Natural Science, Universitas Sebelas Maret
Computer Science & IT Other

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
The Effect of Sawdust Concentration on Biogas Production from Chicken Dung in Anaerobic Co-Digestion Budiyono Budiyono; Andrew Christian Timothy Prasetyo; Grace Sheilla Kristiani Handoko; Hashfi Hawali Abdul Matin
Waste Technology Vol 10, No 2 (2022)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/10.2.%p

Abstract

Resources of oil and natural gas which are derived from fossil energy are wane more and more. One of the research of alternative energy are the production of biogas. Biogas is formed when organic material is degraded by microorganisms in anerobic conditions. Biogas consists of methane gas (50-70%), carbon dioxide (30-50%), and also includes small amounts of other compounds such as hydrogen sulfide (H2S), nitrogen gas (N2) and water vapor. The purpose of this study is to examine the effect of pretreatment on the biogas yield produced, examine the effect of adding nutrients to the biogas yield produced, and examine the effect of the C/N ratio value on the biogas yield produced. Anaerobic fermentation is a series of biological processes that convert organic matter into CH4 and CO2 and also convert S compounds to H2S in the absence of oxygen (O2) by anaerobic microorganisms consisting of four primary stages. In biogas production research, the variables used are the C/N ratio, pretreatment of raw materials, and the addition of nutrients. This research includes three processes, there are the preparation process, the operation process, and the result analysis. It is known that chemical pretreatment using acids results in greater biogas products. Then, the results were obtained that biogas with C/N 30 produced more biogas products. The liquid state (L-AD) method produces more biogas than the solid state (SS-AD) method. The HCl pretreatment variable with C/N ratio of 30, and TS 10% produces the largest kinetics rate compared to other variables.
Analysis of Sebelas Maret University Students Insight of Cosmetic Waste Management that has Hazardous and Toxic Content Hashfi Hawali Abdul Matin; Muhammad Amjad Hamy Faqiih; Muhammad Yusuf Muharram Bayu Aji; Silvi Puspita Sari; Ulfi Hanum; Vania Maharani Rizky Pratiwi
Waste Technology Vol 10, No 2 (2022)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/10.2.28-34

Abstract

Cosmetics contain chemicals including formaldehyde, fragrance and even heavy metals such as lead or mercury. So indirectly cosmetic packaging waste must also contain harmful chemicals and belong to waste B3. Toxic hazardous material waste (waste B3) is waste that contains harmful and toxic substances, so that it can directly or indirectly pollute and damage the environment, disrupt health, and threaten the survival of humans and other organisms. The awareness of students of Universitas Sebelas Maret Surakarta towards B3 waste management can be seen from their understanding of the dangers and how to handle B3 waste in the environment around the residence. An understanding of B3 waste is important in shaping a person's attitude or behavior towards the sustainability of the surrounding environment. The purpose of this study is to find out how much information and knowledge is owned by students of Universitas Sebelas Maret Surakarta related to the management of B3 cosmetic waste in the surrounding environment. The analysis method used in this study is a descriptive analysis method whose descriptive explanation of the data obtained regarding the knowledge of Sebelas Maret University students on B3 cosmetic waste.  The data collected is in the form of primary data conducted through questionnaires and secondary data from valid sources. The results showed that the knowledge of students of Universitas Sebelas Maret Surakarta about B3 cosmetic waste was relatively good. However, for B3 waste management is still not good enough proven from 50 respondents only 30 respondents who stated that using the 3R method (reuse, reduce, recycle) on B3 cosmetic waste, the remaining 20 respondents answered never or just thrown away and there was only one respondent who ever sent B3 cosmetic waste to the authorities sent to the installation "Waste for Change". However, 49 respondents were willing to change their attitude by doing 3R before they disposed of B3 cosmetic waste directly. From the results of this study, it is expected that the campus will hold socialization about the dangers of B3 waste to its students because students also indirectly also produce B3 waste.
Hazardous and Toxic Solid Waste Analysis at Covid-19 Isolation Site (Case Study: Hotel X Bojonegoro Regency) Hashfi Hawali Abdul Matin; Adhistie Fadila Setyaputri; Arlinda Dwi Restanti; Auriga Wahyu Widyadana Ramadhan; Cahya Maulidta Rohman; Desma Asty Pramudita; Dhea Gita Fitri Sagitarian
Waste Technology Vol 10, No 2 (2022)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/10.2.10-17

Abstract

Covid-19 is one of the pandemics that be a problem in Indonesia. This condition becomes one of the urgencies that must be handling seriously to break the chain of transmission. The one ways to handling can be taken by isolating people who are suspected and infected with the corona virus. Bojonegoro is one of the cities in Indonesia that implemented solutions with isolation. As a seriously action to handling can be seen by making Hotel X Bojonegoro for isolation locations. Handling carried out at this location bring a correlation to the emergence of solid waste from covid patients where it becomes one of the sources of B3 waste. This research aims to find out the management of B3 waste (medical solid) at Hotel X in Bojonegoro Regency which is used as a place for isolation of covid-19 patients. The type of research that used in this study is qualitative descriptive with the location of the research determined intentionally (purposive). This study uses primary data obtained from the results of interview methods and uses secondary data derived from literature studies of various existing data and research and correlated to the theme of this study. The results of the investigation showed that the source of waste came from activities in dealing with covid-19 patients so that all kinds of goods that have contact with patients are considered in this type of waste categorized as B3 waste management is done with coordination on third parties which is taken by officers and brought pharmaceutical and medical device installations (INFALKES) for further handling process. In its processing operations are carried out with incentives of funds provided by the government. With this research, it is expected that the supervision of B3 waste can provide more supervision of B3 waste management in hotels where covid-19 isolation is located.
Analysis of Understanding and Attitudes of the Muntilan District Community towards Cell Phone Waste Alya Afra Inas Nur; Agra Dewi Sabrina; Cindy Nurshillah; Daravita Anggorowati; Eka Rachma Putri; Hashfi Hawali Abdul Matin
Waste Technology Vol 11, No 1 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.1.28-32

Abstract

One of the wastes that includes hazardous and toxic waste is electronic waste. Electronic waste such as phone waste is classified as hazardous and toxic waste based on Government Regulation of the Republic of Indonesia No. 101 of 2014. The number of cellular phone uses in Indonesia is increasing every year, the increasing number of cellular phone users in Indonesia has an impact on the amount of cellular phone waste that if not accompanied by the treatment of cellular phone waste as hazardous and toxic waste will harm the environment.  This research aims to determine the understanding of the people of Muntilan District towards electronic waste (cell phone) and to determine the attitude of the people of Muntilan District towards unused cell phones. This research uses descriptive methods with quantitative and qualitative analysis. The data used in the study consists of primary and secondary data, where primary data is obtained through structured interviews. The data obtained from this study are people in Muntilan District are quite familiar with hazardous and toxic waste but most of them did not recognize that cell phone wastes are included in the category of hazardous and toxic waste. The community’s attitudes towards unused cellular phones are to keep the phone.
Analysis of Community Perception on Medical Mask Waste Classified as Hazardous and Toxic Waste in Surakarta, Indonesia Andini Noviana Hartanti; Clara Estelita Damayanti; Fariz Pradana Adzil Fadzilah; Fatiya Azma Tsabita; Fauziana Erlis Safitri; Gavriel Enos Berlin; Hashfi Hawali Abdul Matin
Waste Technology Vol 11, No 1 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/11.1.68-74

Abstract

Hazardous and toxic waste is a substance, energy, or other component that can pollute the environment and endanger the health of living things. One example of this waste is medical waste. Medical waste is classified as hazardous and toxic waste because medical waste is infectious which has the potential to pose a risk of disease transmission. The Covid-19 pandemic has led to an increase in medical waste such as disposable masks. This mask waste requires special management so that it does not become a medium for spreading the virus. This study aims to find out how the public's understanding of mask waste is classified as infectious hazardous and toxic waste, and how the community's knowledge is in managing mask waste. The method of data collection was done through a questionnaire using a Likert approach. The data obtained were analyzed using quantitative and descriptive analysis methods. The results showed that the understanding and awareness of self-management of medical mask waste in the city of Surakarta was high, but the presentation of willingness to collect and send it was quite low. More initiatives and roles from the government and the community are needed in the management of medical mask waste.
Co-Authors Adhistie Fadila Setyaputri Agra Dewi Sabrina Alya Afra Inas Nur Andini Noviana Hartanti Andrew Christian Timothy Prasetyo Arlinda Dwi Restanti Auriga Wahyu Widyadana Ramadhan Budiyono Budiyono Cahya Maulidta Rohman Cindy Nurshillah Clara Estelita Damayanti Daravita Anggorowati Desma Asty Pramudita Dhea Gita Fitri Sagitarian Eka Rachma Putri Fariz Pradana Adzil Fadzilah Fatiya Azma Tsabita Fauziana Erlis Safitri Gavriel Enos Berlin Grace Sheilla Kristiani Handoko Muhammad Amjad Hamy Faqiih Muhammad Yusuf Muharram Bayu Aji Silvi Puspita Sari Ulfi Hanum Vania Maharani Rizky Pratiwi