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All Journal Teknosains : Jurnal Sains, Teknologi dan Informatika Jurnal Teknologi Mineral dan Batubara
Shinta Indah
Universitas Andalas
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PEMANFAATAN BATU APUNG SEBAGAI ADSORBEN DALAM APLIKASI KOLOM ADSORPSI UNTUK PENYISIHAN LOGAM KROMIUM DARI AIR TANAH Shinta Indah; Denny Helard; Febbi Herdiani
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1510

Abstract

The utilization of pumice as an adsorbent has been tested in adsorption column applications in removing chromium (Cr) from groundwater. The pumice was taken from the banks of the Pasak River, Pariaman, West Sumatra. The column used is made of glass with 130 cm in height and 2,6 cm in diameter. The experiment was carried out by varying the bed height (65, 75, and 85 cm) and the influent flow rate (2, 3, and 4 gpm/ft2), while the influent concentration used was according to the groundwater sample conditions. The concentration of Cr was analyzed using inductively coupled plasma emission (ICPE). The performance of the adsorption column can be evaluated from the breakthrough curve, which is a plot between the Ct/C0 ratio and the sampling time. The experimental results showed that the optimum condition with the highest removal efficiency of 65.15% and an adsorption capacity of 0.0031 mg/g were obtained at a bed height of 85 cm and an influent flow rate of 2 gpm/ft2. Based on the experimental results, it was concluded that Cr removal efficiency increased as the influent flow rate decreased and as the bed height of adsorbent increased. The adsorption column with Sungai Pasak Pariaman pumice as an adsorbent has potential to be applied in removing Cr metal from groundwater.
Combination of lime stone and fly ash in the adsorption of iron (Fe) metal from coal acid mine drainage Cici Wulandari; Shinta Indah; Vera Bachtiar
TEKNOSAINS : Jurnal Sains, Teknologi dan Informatika Vol 12 No 1 (2025): TEKNOSAINS: Jurnal Sains, Teknologi dan Informatika (In Progress)
Publisher : LPPMPK-Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/tekno.v12i1.1234

Abstract

Coal mining activities often produce acid mine drainage characterized by low pH values below 5 and high concentrations of heavy metals including iron (Fe). If the water is not managed properly, it can impact the environment due to the influence of acidity and high concentrations of dissolved metals. This research aims to utilize the combination of activated limestone and fly ash by heating at 110°C for 3 hours for acid mine drainage treatment, namely neutralizing pH and adsorbing heavy metal Fe. The selection of adsorbent materials was based on economic considerations, abundant availability, and utilization of fly ash waste. The method used was batch adsorption experiments with contact times of 30 and 60 minutes. Acid mine drainage from coal mine with initial pH 4.55 and Fe metal concentration 7.58 mg/L. The adsorbent combination of limestone and fly ash in the ratio of 1:1, 1:2, and 2:1. From the experimental results, it was obtained that the adsorbent combination was able to neutralize pH up to 6 and remove Fe up to 1.35 mg/L was the ratio of 1:2 with a stirring time of 30 minutes. So it can be concluded that adding fly ash dose 2 times compared to the dose of limestone is more effective to raise the pH value and remove Fe heavy metal, because the higher the dose given, the more ion adsorption sites will be available
Co-Authors Cici Wulandari Denny Helard Febbi Herdiani Vera Bachtiar