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Electrocoagulation for nickel, chromium, and iron removal from mine water using aluminum electrodes

Year: 2024

Type: article

Abstract: High global demand for nickel metal has contributed significantly to the growth of the nickel mining industry in Indonesia. This growth has a positive multiplier effect on the economy, with the potential to affect aquatic life and humans owing to the high levels of chromium, nickel, and iron in mine water. Therefore, this study aims to develop an electrocoagulation (EC) technology to remove nickel, chromium, and iron from mine water. This study used a continuous reactor and aluminum electrodes with variations in current strength (2, 4, and 6 A) and detention times (15, 30, and 45 min). The results showed that the operating scenario with a current strength of 6 A and an inflow of 0.3 L/minute had a removal efficiency of 86.89% nickel, 99.51% chromium, and 80.61% iron with a charge loading value of 11,194 F/ma3 and Reynolds number of 39. These results are expected to provide valuable information for the development of an effective EC technology, thereby demonstrating its potential for the removal of metals from nickel mine water.

Source: Heliyon

DOI: 10.1016/j.heliyon.2024.e40784

Authors: Muhammad Ghozali Harahap, Muhammad Sonny Abfertiawan, Mindriany Syafila, Marisa Handajani, Tonny H. Gultom

Institutions: Bandung Institute of Technology, University of Indonesia

Language: English

Topic: Coagulation and Flocculation Studies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,100