Acid mine drainage (AMD) occurs after mining exposes metal sulfides to oxidizing
conditions. Leaching of reaction products into surface waters pollute over 20,000 km of …

The non-stoichiometric compounds of iron sulphide named pyrrhotite (Fe1− xS) are often
associated with pyrite (FeS2) in sulphidic ores and their waste products. The factors affecting …

Hydrology is a relatively young science, which has developed gradually out of the hydraulic
expedients which underpin much of civil engineering practice. Indeed, the emergence of …

The protection of groundwater and surface water from contamination by the escape of
contaminant from waste disposal is now an important consideration in many countries of the …

Tailings are ground rock particles from which the valuable minerals or metals have been
extracted. An historical overview on hard rock mines shows that since the 1930s, it has …

Increased public awareness of environmental issues coupled with increasingly stringent
environmental regulations pertaining to the disposal of sulphidic mine waste necessitates …

Acid mine drainage (AMD) forms when sulfide minerals are exposed to oxidizing conditions
in coal and metal mining, highway construction, and other large‐scale excavations. The …

A new alternative septic‐system design is presented utilizing reactive porous media barriers
for passive in situ attenuation of NO3−. The reactive material consists of solid organic carbon …

Molecular diffusion is an important mechanism for gas transport in various natural and man-
made systems. This is particularly the case with soil covers installed on acid-generating …

Infiltration tests were conducted on soil columns of silty sand over pea gravel, concrete sand
over pea gravel, and silty sand over concrete sand to investigate the capillary barrier effect …