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Rina Noor Hayati
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science

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Aplikasi Campuran Ekstrak Kulit Nanas dan Biji Pepaya sebagai Biokoagulan untuk Penurunan Fe, Mn, dan Kekeruhan pada Air Asam Tambang dengan Metode Jar Test Ismi Khairunnissa Ariani; Rina Noor Hayati; Riza Hudayarizka; Cut Keumala Banaget; Krisma Nabilla
SPECTA Journal of Technology Vol. 9 No. 3 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i3.8481486

Abstract

Acid mine drainage can pollute the environment if not treated properly. Acid mine drainage can be treated using the coagulation-flocculation jar test method with pineapple peel and papaya seed biocoagulants to reduce the contaminants contained therein. The purpose of this study was to determine the characteristics of acid mine drainage, analyze the effect of biocoagulant dosage and analyze the variation of slow stirring time in reducing Fe, Mn, Turbidity parameters in Acid Mine Drainage. The research variables used were biocoagulant dosage of 0.5 - 2.5 gr/500 mL and slow mixing time of 10 - 30 minutes. Based on the characteristic test, acid mine drainage has content that exceeds the quality standard. The optimum biocoagulant dose was 0.5 gr/500 mL with Fe parameter removal efficiency of 66.56% with a concentration of 18.3 mg/L, Mn of 8.71% with a concentration of 12.78 mg/L, and Turbidity of 78.87% with a concentration of 5.33 NTU. The optimum stirring time is 10 minutes with Fe removal efficiency of 61.71%, Mn of 71.18%, and Turbidity of 63.12%.
Penentuan Status Mutu Kualitas Air Sungai Somber Hulu Menggunakan Metode Indeks Pencemaran Basransyah, Basransyah; Rina Noor Hayati; Melisa Triandini Maulani; Defriatno, Mawan Eko
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

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Abstract

Population growth that is not balanced with adequate environmental management can hurt environmental quality. The Somber Hulu River is one of the rivers located in the North Balikpapan District. Some people living around the river directly discharge liquid waste into the river, potentially causing pollution that can disrupt the river ecosystem. One sign of pollution in the Somber Hulu River is characterized by smelly and cloudy river water. The research began by determining the river water sampling point, and then the water samples were tested to determine the pollutant concentration based on the specified parameters. The next stage was determining the water quality status using the Pollution Index (IP) method. The reference water quality standard used the class II river water quality standard based on Government Regulation number 22 of 2021. The purpose of this study was to determine the water quality status in the Somber Hulu River as a basis for decision-making in planning control measures to improve surface water quality. Based on the results of the measurements carried out, it is known that in general the water quality of the Somber Hulu River is moderately polluted with an IP value of 3.87 and lightly polluted with an IP value of 7.05 at point 2, an IP value of 5.37 at point 3, and an IP value of 5.25 at point 4. There needs to be management and control of water pollution sources, such as optimizing the use of septic tanks, carrying out monitoring activities, conducting routine river water quality monitoring, and encouraging community involvement in sustainable river management.
Co-Authors Ariani, Ismi Khairunnissa Basransyah, Basransyah Cut Keumala Banaget Defriatno, Mawan Eko Krisma Nabilla Melisa Triandini Maulani Riza Hudayarizka