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All Journal Tameh : Journal of Civil Engineering Journal Serambi Engineering (JSE)
Yunita, Irda
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Persepsi Masyarakat terhadap Dampak Limbah Tahu di Sekitar Sungai Shaskia, Nina; Yunita, Irda
Tameh Vol. 10 No. 2 (2021): Tameh: Journal of Civil Engineering
Publisher : University of Muhammadiyah Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37598/tameh.v10i2.153

Abstract

The tofu processing sector is quickly expanding in tandem with the popularity of tofu meals among Indonesians. Unfortunately, the tofu industri's rapid growth has not been matched by effective waste management, and as a result, many businesses continue to dump liquid waste directly into rivers without treatment. In the Krueng Daroy and Krueng Doy River sections of Banda Aceh, there are three tofu factories that directly dump liquid waste into the river and have the potential to damage the river. As a result, the goal of this study is to examine the public's perception of tofu waste's influence on the river ecosystem and to assess public comprehension of tofu waste's impact on the environment. The descriptive analysis method was used in this study. Questionnaires, observations, and interviews were used to gather information. After that, the data was descriptively processed and weighted. The findings are divided into three categories: public perception of aesthetics, public perception of smell, and public perception of the environmental impact of tofu waste. More than 90% of the respondents thought that tofu waste had a negative impact on the environment's aesthetics and produced stink. The public's impression of tofu waste in the river environment is 78.56 percent, which means that more than 75 percent of respondents believe tofu waste has an environmental impact. It is included in the "disturbing" category based on the average attitude rating of 785.6. This demonstrates that tofu waste has a detrimental environmental impact. As a result, business actors must get a better understanding of the impact of tofu waste on the environment, as well as the efforts that must be done to reduce that impact, such as constructing an appropriate Waste Treatment Plant (IPAL) or repurposing tofu liquid waste for other purposes.
Pemanfaatan Bottom Ash PLTU sebagai Media Filter untuk Mengolah Limbah Tahu Yunita, Irda; Teuku Muhammad Zulfikar; Fiki Angga Mulia; Elvitriana; Bahagia
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Liquid waste from the tofu industry is a significant source of water pollution, containing high levels of organic materials that can harm aquatic ecosystems. On the other hand, Coal-Fired Power Plants (CFPP) produce a large amount of bottom ash, which is still underutilized. This study aims to explore the potential of bottom ash from the Nagan Raya CFPP in Aceh as an economical and environmentally friendly alternative filter medium for treating tofu wastewater. The main focus is to evaluate the effectiveness of bottom ash in reducing Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), and neutralizing pH. The method employed is a quantitative experimental approach using a layered filtration system consisting of gravel, coir, sand, and bottom ash as the adsorbent. The contact time between the wastewater and the filter medium was varied for 2, 4, and 6 hours, with a control filter without bottom ash. Initial samples showed TSS levels of 560 mg/L and a pH of 3.8, which are far below the quality standards. The results indicate that the use of bottom ash significantly improves wastewater quality, with the highest TSS removal efficiency reaching 82.85% at a contact time of 6 hours, reducing TSS to 96 mg/L. The highest COD reduction occurred at a contact time of 2 hours, with an efficiency of 24.8%. Bottom ash was also effective in neutralizing the wastewater, raising the pH to a neutral range (6.2 – 7.0). These findings suggest that bottom ash from CFPP has great potential as a filter medium for tofu wastewater.
Co-Authors Bahagia Elvitriana Fiki Angga Mulia Shaskia, Nina Teuku Muhammad Zulfikar