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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Journal of Community Based Environmental Engineering and Management Jurnal Pendidikan IPA Indonesia

Toru Matsumoto

The University of Kitakyushu

Author-ID : 2426856

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Engineering Environmental Science Public Health Other

Published : 5 Documents Claim Missing Document

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Articles

PARTICIPATION OF LEADERS AND COMMUNITY IN SOLID WASTE MANAGEMENT IN INDONESIA TO REDUCE LANDFILL WASTE LOAD Indriyani Rachman; Qiyam Maulana Binu Soesanto; Hafizhul Khair; Toru Matsumoto
Journal of Community Based Environmental Engineering and Management Vol. 4 No. 2 (2020): Vol. 4 No.2, September 2020
Publisher : Department of Environmental Engineering - Universitas Pasundan - Indonesia

The increase in population and changes in community consumption patterns are one of the triggers for the increasing volume of waste. Therefore, changes are needed to manage waste so that the accumulation of waste can be handled properly. Government cooperation is considered important in solving problems. The volume of waste from its source has to be reduced. Therefore, it is important to empower the community in managing waste. This study compares the community participation in 3 villages in managing waste in their respective housing areas and waste management managed by the City Sanitation Department. Waste management in 3 locations became areas that can reduce the amount of waste going to the landfill. The data collection methods include interviews, observation and documentation, while data analysis uses descriptive qualitative techniques. Based on the results of the study, one form of leader and community participation in environmental improvement efforts is by participating in managing waste, participating in 3R workshops and giving labor contributions in the form of community service.

LIFE CYCLE ASSESSMENT OF DOMESTIC WASTEWATER TREATMENT IN MEDAN CITY, INDONESIA Ira Rumiris Hutagalung; Toru Matsumoto
Journal of Community Based Environmental Engineering and Management Vol. 4 No. 2 (2020): Vol. 4 No.2, September 2020
Publisher : Department of Environmental Engineering - Universitas Pasundan - Indonesia

Medan City already has been having Waste Water Treatment Plant (WWTP) under PDAM Tirtanadi (North Sumatera Government) supervision, namely IPAL Cemara. IPAL Cemara is off-site sewerage system to treat domestic wastewater, includes black and grey water. IPAL Cemara has maximum capacity 60,000 m3/day, but recently, the number of treated households by IPAL Cemara is 18,396 households and the used capacity is less than 10,000 m3/day. This research analyses on operational phase of IPAL Cemara on environmental impacts, starts at wastewater influent from households and ending at release of wastewater effluent and disposal of dry sludge. The phase of reuse or recycle of effluent wastewater and dry sludge, and waste management are not included. Functional unit in this research is treatment of 7,171 m3 wastewater per day for a year. The system boundary starts at wastewater influent and ends at release of wastewater effluent. The characterization factors are tracked based on CML Baseline 2001 and all of data processed by Microsoft Excel. For the result, got that Aerated Pond has removal efficiency of BOD and COD more than 70%, but on the other hand, it is the largest contributor to Climate Change impact because of diesel consumption (16.97%), the amount of CO2 (4,95%), and N2O (4.26%) from biogenic emission, and electricity use (3.04%). The 65% reducing of TSS is occurred in UASB Reactor but UASB Reactor also as contributor for Climate Change impact (16.63%) and Photo-Oxidant Formation impact (29.34%) due to the highest production of CH4. Facultative Pond contributes 49% of Climate Change impact and 31% of Photo-Oxidant Formation impact because of the highest production of CH4. Based on normalized by impact category, Freshwater Ecotoxicity and Eutrophication is the largest environmental impact in a whole system of IPAL Cemara. Freshwater Ecotoxicity caused by 72% CS2 at Release of Wastewater and Eutrophication caused by 41.25% of NH3 and 39.60% of N. It is Align with the result of normalized by Life Cycle Stage, shows that the Release of Wastewater Effluent is the largest contributor to environment in a whole system of IPAL Cemara.

Multi Perception Analysis of Medan City Residents Against the River Environment Indriyani Rachman; Ira Rumiris Hutagalung; Toru Matsumoto
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 2 (2021): July 2021
Publisher : Universitas Diponegoro

Deli Medan River is one of the rivers used as a mode of transportation in the 1980s. The shift in water transportation to land causes the Deli Medan River not to get attention and tend to be ignored. This study aims to describe the perception of the people of Medan City on the Deli River Medan while at the same time looking for a correlation between each variable. This study involved 365 respondents divided from various urban villages in the Medan City area (136 men and 232 girls). The selected respondents are aged 9-60 years with a vulnerable elementary school to a college education. Spearman correlation analysis is used to see the relationship between variables. The results of the study inform that there is no relationship between pollution and siltation that occurs in the Deli River Medan, different results are shown between the changing of river transportation modes to land caused by river silting, the level of education and awareness in disposing of waste, as well as pollution that occurs and industries that dispose of waste. Wastewater in the Medan Deli River body (Sig. <0.05). Furthermore, the Deli Medan River has been polluting by waste and wastewater.

Study of Beach Litter on Remote Island, Case Study: Ainoshima Island, Japan Nani Anggraini; Irfan Tawakkal; Muhammad Ma‘arij Harfadli; Sattar Yunus; Indriyani Rachman; Toru Matsumoto
Journal of Community Based Environmental Engineering and Management Vol. 7 No. 2 (2023): Vol. 7 No.2, September 2023
Publisher : Department of Environmental Engineering - Universitas Pasundan - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jcbeem.v7i2.10102

Ainoshima Island is a Remote Island located north of Kyushu Island which is also known as a popular tourist attraction named Cat Island. The island is inhabited by a small population but is frequented by tourists to enjoy nature and fishing. The coastline is in the form of cliffs and sandy beaches, but there is a lot of marine debris on the sandy beaches. In addition, its location allows waste from the surrounding area to be carried by currents to this island. This research examines the diversity of categories and types of macroplastic litter trapped on the sandy beach of Ainoshima Island. Survey transects were conducted in the spring of 2023 via visual observation based on a survey method developed by NOAA, in 2012. The survey results were then categorized based on a photo guide database from the OSPAR Maritime Area for Active Monitoring of Marine Debris on the Beach. Data on the types of waste found are divided into artificial polymer materials (plastic), rubber, cloth, paper/cardboard, processed/finished wood, metal, glass, and ceramics. As a result, the plastic category is the dominant category of the total type of waste trapped in sandy beach areas.

The Supplementary Low Carbon Education E-book for Elementary School Students to Enhance Sustainability Literacy and Global Character Diversity Anna Permanasari; Indarini Dwi Pursitasari; Toru Matsumoto; Ida Hamidah; Annisa Nurramadhani
Jurnal Pendidikan IPA Indonesia Vol. 15 No. 1 (2026): March 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v15i1.36719

The development of e-books related to low-carbon education (LCE) has been used to enhance sustainability literacy and global character diversity (GCD) among elementary students. The research was conducted to identify the three themes of e-books available to students in phases A, B, and C. The three e-books have developed into a supplementary, ongoing curriculum. The e-books with flip mode and a high validity index have already been implemented and researched using a pre-experimental design in each phase. The e-books were designed as picture stories, equipped with various features to train students’ sustainability literacy and GCD through invitations to think critically, to complete projects, and to express their thinking related to the context and environmental problems. The validity of the e-books was ensured through validation by 5 experts and 20 users, and the data were analyzed using simple statistics and CVI/CVR indexes. The sustainability literacy instrument used was developed and implemented together in the context of learning in Indonesia and Japan (Kitakyushu), with some modifications tailored to each phase. Students' GCD was monitored using a standard questionnaire based on GCD indicators. The research shows that all the e-books have high usability, as indicated by the CVI/CVR scores. The implementation results show, on average, an increase in students’ sustainability literacy from moderate to high. The improvement in students’ GCD was from the moderate to the high category. In addition, the books, attractively packaged with cartoon images, were easy to use with an Android app and very handy, which made the learning experience enjoyable for students.

Co-Authors Anggraini, Nani Anna Permanasari Annisa Nurramadhani Hafizhul Khair Ida Hamidah Indarini Dwi Pursitasari Indriyani Rachman Ira Rumiris Hutagalung Ira Rumiris Hutagalung Irfan Tawakkal Muhammad Ma‘arij Harfadli Qiyam Maulana Binu Soesanto Sattar Yunus

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