Bossissi Nkuba

• 02/02/2021
• 5 p.m. (CAT)
• ​Online PhD defence​
• Supervisors: Lieven Bervoets, Sara Geenen & Landry Cizungu (Catholic University of Bukavu)
• Department of Biology

This thesis investigates the use of mercury (Hg) in artisanal small-scale gold mining (ASGM), pollution of aquatic ecosystem by Hg and other metals, and human intoxication by these metals in Kamituga (Eastern Congo).

The first part assesses perceptions on mercury, making use of qualitative data as well as a quantitative survey. It  found that despite existing laws banning Hg use in ASGM, a lack of enforcement leads to widespread use of Hg. Miners use Hg on ore concentrates, thereby limiting Hg pollution. But they use Hg in residential areas and within streams’ watersheds, thus exposing communities and aquatic ecosystems. People are poorly informed on effects of Hg on environment and health. However, the findings include some promising signs, since our respondents prioritize environment and health protection more than economic profit from ASGM (read more)