PhD defence

Sustainable Gold Mining Wastewater Treatment by Sorption Using Low-cost Materials

Among the various wastewater treatment technologies, the sorption process is considered better because of lower cost, simple design and easy operation. Sorption technique was employed to remove heavy metals from gold mining effluent using natural and plant materials.

Promotor dr.ir. PNL (Piet) Lens
Organisation Wageningen University, Sub-department of Environmental Technology
Date

Fri 18 October 2013 13:00 to 14:30

Venue Auditorium, building number 362
Generaal Foulkesweg 1
362
6703 BG Wageningen
0317-483592
Externe Zaal 1 (UNESCO-IHE, Delft)
The use of coconut shell as sorbent for copper removal from gold mining effluent has an additional positive impact on the environment in terms of solid waste management
Mike Acheampong

An assessment of the effluent quality of a gold mining company in Ghana indicated that arsenic, copper and cyanide were the major pollutants in the process effluent. The research showed that coconut shell (CS) can be an important low-cost sorbent for copper removal from inorganic wastewater. However, arsenic removal was only possible with iron-oxide-coated sand (IOCS). The research showed that the down-flow fixed-bed treatment configuration is an ideal system for the simultaneous removal of copper and arsenic from low concentration gold mining effluent, in addition to other heavy metals present in very low concentrations.