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All Journal TEKNIK Jurnal Kesehatan Masyarakat
Haryono S. Huboyo, Haryono S.
Environmental Engineering Program, Faculty of Engineering, University of Diponegoro
Education Engineering Public Health

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Analysis of Particulates and SO2 Removal from Coal Combustion Emissions Using Cyclone and Wet Scrubber With Textile Wastewater Feed Huboyo, Haryono S.; Sudarno, Sudarno
TEKNIK Vol 41, No. 3 (2020): December 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v41i3.33883

Abstract

Reuse of wastewater in the industry is mostly accomplished for watering plants. In a closed cycle, however, industrial wastewater can be returned through treatment to save water usage. This study aims to analyze textile wastewater's ability to be used as scrubbing liquid in the SO2 gas and particulate removal from coal combustion using a packed wet scrubber. Usually, the textile industry uses boiler fueled by coal and discharging base/alkaline wastewater. The method is carried out experimentally using a prototype device using a combination of cyclone and scrubber, with a source of coal combustion gas emissions. We did experiments using textile wastewater four times and two times using clean water as a control. We monitor the SO2, particulate emission in the gas stream, and pH, sulfate levels, and TSS levels in collected wastewater according to SNI. SO2 gas and particulates from coal combustion will be absorbed by the scrubber's wastewater spray so that SO2 will dissolve into sulfate, particulate matter into TSS. The study results using textile wastewater showed the removal efficiency of particulates on cyclone by 34-78%.  The removal efficiency of SO2 on wet scrubber was only 24.7%. There was an increase in TSS levels after passing through the scrubber by 46%. The rise in TSS and sulfate concentrations in the wastewater indicates the absorption of SO2 and particulates into wastewater. Based on this result, we can use textile wastewater for controlling the emission of SO2 and particulate from coal combustion by feeding it for the scrubber. However, the efficiency of this process is not optimal.
Walking Towards Wellness: Exploring Community Views on Urban Walkability for a Healthier Lifestyle in Semarang Azizah, Kirana Prasetya; Setiadji, Bagus H.; Huboyo, Haryono S.
Jurnal Kesehatan Masyarakat Vol. 21 No. 1 (2025)
Publisher : Universitas Negeri Semarang in collaboration with Ikatan Ahli Kesehatan Masyarakat Indonesia (IAKMI Tingkat Pusat) and Jejaring Nasional Pendidikan Kesehatan (JNPK)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kemas.v21i1.26750

Abstract

Promoting active mobility, such as walking, is a key measure in creating a healthier urban environment. In support of Semarang City’s Urban Mobility Plan, which prioritises low-carbon strategies, the local government has undertaken extensive development of pedestrian infrastructure since 2017. This study investigates public willingness to utilise pedestrian pathways, a critical component in ensuring the effectiveness of such interventions. Data were collected through a survey involving 254 respondents across 24 major roads in Semarang. Findings indicate that walking is predominantly undertaken for shopping and health-related activities, typically covering distances between 200 and 800 metres on weekends. Destinations most frequented include shops, markets, stalls, and shopping centres. The results highlight the importance of integrating user-centred design into pedestrian infrastructure and emphasize the function of pedestrian paths as a social interaction space for both physical exercise and building community cohesion, thereby maintaining the mental health of residents.
Co-Authors Azizah, Kirana Prasetya Setiadji, Bagus H. Sudarno Sudarno