The Re-Usability of Ecklonia maxima (Brown Seaweed) in the Treatment of Mine Effluent

Abstract:

Groundwater contamination due to mining, industrial and agricultural activities is a source of concern, especially with the advent of more stringent environmental legislation. Water sources in South Africa are multi-functional as the same water used in industrial processes is also used in agriculture.[1] Mining activities in the Northern Cape of South Africa, is largely as a result of manganese mining where Mn (II) and Fe (II) is removed. The treatment of the effluent discharged to the environment is therefore seen as a priority.Biosorption has proven to be a viable alternative to the use of conventional heavy metal removal methods. [2, 3] The re-usability of the biomaterial was investigated using a batch system. The biomaterial was contacted with Mn (II) sulfate, after which the supernatant was analysed for metal content. The biosorbent was then dried and desorbed using HCl. This process was repeated 3 times to investigate whether the biomaterial deteriorated and whether the biosorption process was affected by multiple use of the same biomaterial. The results showed that the biosorption capacity reduced with each successive use of the biomaterial.

• Periodical: Advanced Materials Research (Volume 1130)
• Pages: 681-684
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1130.681
• Online since: November 2015
• Authors: A.B. Marshall*, D.I.O. Ikhu-Omoregbe
• Keywords: Biomass, Biosorption, Brown Seaweed, Ecklonia Maxima, Sorption Capacity

References

[1] Jackson, V. A., Paulse, A. N., Odendall, J. P., & Khan, W. Water SA Vol 35-3, (2009), p.289 – 299.

[2] Volesky, B. & Vieira, S. International Microbiology Vol 3 (2000), pp.17-24.

[3] Aderhold, D., William, C. J., Edyvean, R. G. J. Bioresource Technology Vol 58 (1996), pp.1-6.

[4] South African Trade, Investment and Tourism Promotion Symposium, 6 February (2014).

[5] Nkhata, B (2014). The need to invest in institutions to secure water in the Northern Cape. Water Security Network.

[6] Feng, D. & Aldrich, C. Hydrometallurgy Vol 73 (2004), p.1 – 10.

[7] Marshall, A.B. (2012) Kinetics and Thermodynamic Studies on biosorption of Heavy Metals Using ecklonia maxima.

[8] Volesky, B. Science Direct Vol 41 (2007), p.4017 – 4029.

[9] Volesky, B. Hydrometallurgy Vol 71 (2003), p.179 – 190.

[10] Atkinson, B.W., Bux, F., Kasan, H.C. Water SA. Vol 24 - 2 (1998), pp.129-135.

[11] Chitguppa, R., Chu, K.H., Hashim, M.A. Biotechnology Techniques Vol 11 – (1997), pp.371-373.