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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) Proceeding Mulawarman International Conference on Tropical Public Health
Warow, Novalia
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Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health

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Effectiveness of Hermetia illucens Chitosan as a Biocoagulant to Reduce Turbidity and TDS Hiola, Tumartony Thaib; Utama, Deddy Alif; Kalengkongan, Maykel; Warow, Novalia
Mulawarman International Conference on Tropical Public Health Vol. 1 No. 1 (2025): The 3th MICTOPH
Publisher : Faculty of Public Health Mulawarman University, Indonesia

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Abstract

Background : Limboto Lake is experiencing pollution that has led to increased turbidity and Total Dissolved Solids (TDS), deteriorating water quality and posing health risks to the surrounding communities. Domestic wastewater flowing into the lake is the primary source of this contamination. One approach to addressing this issue is water treatment using chitosan derived from Hermetia illucens pupal shells, which has active amino groups acting as a natural biocoagulant. Chitosan was selected for its eco-friendly, biodegradable properties and its effectiveness in coagulation and flocculation processes. Objective : This study aims to evaluate the effectiveness of chitosan in reducing turbidity and TDS levels in water samples from Limboto Lake. Research Methods/ Implementation Methods : The research method employed was a laboratory experiment with a pre-test and post-test control group design, involving chitosan concentrations of 50, 100, and 150 ppm. Results : Results indicated that the highest reduction in turbidity occurred at a 100 ppm concentration, from a pre-treatment level of 14.14 NTU down to 1.79 NTU, or about 87.34%, meeting clean water quality standards. Furthermore, the highest TDS reduction was also observed at 100 ppm, from 68.93 mg/L pre-treatment to 41.3 mg/L, a reduction of approximately 40.08%, remaining within safe limits as per Ministry of Health Regulation No. 2 of 2023. Conclusion/Lesson Learned : Based on these findings, it can be concluded that Hermetia illucens chitosan is effective as a natural biocoagulant in reducing turbidity and TDS in lake water. The use of chitosan holds potential as an eco-friendly alternative solution for water treatment.
Analisis Erosi dan Sedimentasi di Sub Das Alo-Pohu Kesatuan Pengelolaan Hutan Vi Gorontalo Mosi, Yetty; Warow, Novalia; Usman, Mutmainnah; Bahuwa, Isra Cahayani; Rosalia, Nurma; Kadir, Zein Setiawan; Hamidun, Marini Susanti; Lihawa, Fitryane; Dunggio, Iswan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.616

Abstract

Gorontalo Province has topography in the form of lowlands to highlands which is shaped like a basin and most of Gorontalo Province is a water catchment area. One of the rivers with quite high sedimentation levels is the Alo River. To avoid more severe damage, technical conservation steps need to be taken, one of which is by building serial and continuous Check Dams. This research aims to determine erosion and sedimentation control and its effectiveness in the Alo watershed. The research method used was a direct survey method at the activity location, interviews with related agencies and people who were active at the location, then analysis was carried out. The stages begin with collecting primary data, secondary data. The data analysis used is using the Smith and Wischmeier (1978) equation known as the Universal Soil Loss Equation (USLE) A = R x K x LS x C x P. The results of the research show that the activities The construction of the Check Dam was carried out in 2021 by the Environment and Forestry Service of Gorontalo Province through KPH VI Gorontalo which is located in Buhu Village, Gorontalo Regency. The results of studies in the field show that the width of the Alo River is narrowing and experiencing shallowing, marked by the appearance of deltas at several points. On average, the width of the Alo river is only around 3-4 meters with a depth of around 10-15 cm. The conclusion of this research is 4. The Check Dam built by DLHK Gorontalo Province through KPH VI does not function well in dealing with erosion and sedimentation that enters the Alok River due to lack of maintenance and involvement of the local community. Keywords: Soil conservation, Water, Gorontalo.
Co-Authors Bahuwa, Isra Cahayani Deddy Alif Utama Fitryane Lihawa Hiola, Tumartony Thaib Iswan Dunggio Kadir, Zein Setiawan Kalengkongan, Maykel Marini Susanti Hamidun Mosi, Yetty Rosalia, Nurma Usman, Mutmainnah