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All Journal Jurnal IPTEK
Leily Nurul Komariah
Master Department of Chemical Engineering, Universitas Sriwijaya
Civil Engineering, Building, Construction & Architecture Computer Science & IT Industrial & Manufacturing Engineering Mechanical Engineering

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Effectiveness of Reducing Ammonia Levels in Hospital Wastewater Using A Combination of Bagasse Bio Adsorbent and Nanofiltration Membrane Laily Noor Fitri Lestari; Subriyer Nasir; Leily Nurul Komariah
Jurnal IPTEK Vol 29, No 1 (2025): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.7691

Abstract

The increasing environmental impact caused by hospital wastewater, particularly due to its ammonia content, necessitates innovative treatment methods. This study investigates the effectiveness of a combination of sugarcane bagasse-based activated carbon bio-adsorbent and nanofiltration membrane technology to reduce ammonia concentrations in hospital wastewater. The activated carbon was produced through carbonization at 550°C and chemical activation using 10% H2SO4. Adsorption experiments were conducted by varying bed heights (5, 7.5, and 10 cm) and flow rates (2, 3, and 4 L/min), followed by nanofiltration at 25, 30, and 35 Psi pressures. Results showed that the combined treatment reduced the wastewater pH from 9.08 to 6.53 and ammonia concentration from 4.61 mg/L to 0.02 mg/L, successfully meeting regulatory standards. This indicates that the integrated method effectively decreases ammonia levels and improves wastewater quality before discharge.
Synthesis of Zeolite from Coal Bottom Ash Using Hydrothermal Method as An Adsorbent for Heavy Metals Cd, Pb, Fe, and Cu Yayat Setiawan; David Bahrin; Leily Nurul Komariah
Jurnal IPTEK Vol 29, No 1 (2025): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.7715

Abstract

This study aims to synthesize zeolite from coal combustion bottom ash using the hydrothermal method and evaluate its effectiveness in adsorbing heavy metals—specifically cadmium (Cd), lead (Pb), iron (Fe), and copper (Cu). Bottom ash was treated via alkali fusion at 750°C, followed by acid activation with 1 M HCl to extract silica and alumina. Zeolite synthesis was hydrothermal at 100°C with 6, 12, and 24 hours of crystallization. Sodium aluminate (NaAlO2) was added to adjust the Si/Al ratio and enhance structural stability. The synthesized zeolites were characterized using X-ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM). The sample crystallized for 12 hours and exhibited the highest SiO2/Al2O3 ratio, measuring 3.73. Adsorption tests revealed optimal performance at pH 5–9 and 120 minutes contact time, achieving removal efficiencies of 97.84% for Pb2+, 99.47% for Cd2+, 99.73% for Fe2+, and 99.91% for Cu2+. These findings demonstrate that bottom ash-derived zeolite is a promising, low-cost adsorbent for heavy metal removal from wastewater. It supports use in sustainable and long-term industrial effluent treatment systems.
Co-Authors David Bahrin Laily Noor Fitri Lestari Subriyer Nasir Yayat Setiawan