E3S Web Conf.
Volume 68, 2018The 1st Sriwijaya International Conference on Environmental Issues 2018 (1st SRICOENV 2018)
|Number of page(s)||6|
|Section||Reducing Global Warning Effect|
|Published online||27 November 2018|
Control of Chromium Hexavalent (Cr -VI) Pollution on Waste Water in Nickel Ore Extraction Industry with Phytoremediation Technology
1 School of Environmental Science, Universitas Indonesia, Indonesia
2 Environmental Engineering Program, Faculty of Engineering, Universitas Indonesia, Indonesia
3 General Directorate of Mineral and Coal, Ministry of Energy and Mineral Resources, Indonesia
* Corresponding author: firstname.lastname@example.org
The issue that surfaces from the digging of limonite and saprolite zones on nickel ore mining is the oxidation of chromium to chromium hexavalent. The aim of this research is to analyze the efficiency level of phytoremediation technology to reduce chromium hexavalent on waste water of nickel ore mining industry. This study was done in situ to observe the potential of Water Lettuce (Pistia stratiotes) using self-designed experimental devices.. This research was divided into three part, such as the variation of plant’s weight of 10grams, 20grams, 30grams, 60grams, 70grams, and 150grams with interval of an hour for five hours, variation of chromium hexavalent of 0.5ppm, 1ppm, 2ppm, 5ppm, and 7ppm with interval of 4 days for 20 days, and variation HRT 1.5 hours, 2 hours, and 3 hours with interval of 24 hours for 16 days. The result of this research shows the average of efficiency on observation one, two and three are 18.5%, 89%, and 28%. The usage of phytoremediation technology shows the potential to reduce chromium hexavalent pollutant.
Key words: Phytoremediation / Chromium hexavalent / Pollution Control / Pistia stratiotes / Waste water
© The Authors, published by EDP Sciences, 2018
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