Page 32 - GS58346 Tasik Chini
P. 32
Collection and treatment of mining effluents Application of Biomining
• Understand the sources of water that mines use in their • Carried out for efficient tailings management by using natural
operations as well as the effluent discharged to the resources
environment. • The use of biochar may be considered as an effective option for
• Most mines produce tailings as the final waste. Tailings mine wastes management. Application of biochar as a
management is a crucial issue in mining operations phytostabilization technology. Biochar is become a promising
because of their irreversible impact on the environment. heavy metal adsorbent due to its abundance of polar functional
• Process-affected water in tailings pond generally groups, such as hydroxyl, carboxylic and amino groups. Biochar
contains metals and acid that must be neutralized prior has many properties, such as a relatively structured carbon
to disposal. matrix, high degree of microporosity, extensive surface area, and
• Furthermore, the presence of other chemicals in tailings high pH and cation exchange capacity leading to make it a good
such as surfactants, leaching agents, reagents, solvent adsorbent (Li et al., 2015)
extractants, and other additives in the mining operations • Beside that, biosolids and plants on physicochemical conditions of
also needs to be treated before discharge of tailings. iron ore tailings showed that biosolids and plants are able to
(Ritcey GM, 2005) improve conditions related to iron ore mine soil fertility and
recolonization of reclaimed sites may be affected by higher metal
concentrations (Cele and Maboeta, 2016)
• For the treatment of acid mine drainage and metal sulfides
recovery, Xingyu et al. (2013) used a novel low pH sulfidogenic
bioreactor using activated sludge as carbon source.
