Environmental Engineering Reference
In-Depth Information
6
Pragmatic Approach for Health
Risk Assessment of Bauxite
Tailing Was
te Materials
JackC.Ng,JianPingWang,ChengPeng,andGuanyuGuan
CONTENTS
Introduction............................................................................................................ 91
Methods................................................................................................................... 93
Results.and.Discussion......................................................................................... 97
Particle.Distribution.Proile............................................................................. 97
Mineralogical.Composition.and.Elemental.Concentrations.
of.Bauxite.Tailings............................................................................................. 98
Bioaccessibility................................................................................................ 100
Risk.Assessment.............................................................................................. 100
Aluminum................................................................................................... 100
Vanadium.................................................................................................... 105
Other.Metal/Metalloids............................................................................ 106
Particulate.Matter.with.Special.Reference.to.Crystalline.
Silica.(Quartz)............................................................................................. 106
Conclusions.......................................................................................................... 108
References............................................................................................................. 108
Introduction
Alumina. mining. and. reining. is. a. major. industry. in. some. countries.. It.
contributes. signiicant. beneit. to. the. general. world. economy.. With. glob-
ally. increasing. demand. for. mineral. resources,. a. concomitant. and. ongoing.
increase.in.mining.activities.has.been.taking.place.globally.in.recent.years..
This.spurt.in.growth.is.not.without.problems;.mining.operations.inevitably.
lead.to.dust.fall-out.and.chemical.exposure,.which.in.turn.has.given.rise.to.
community.complaints.and.concerns.all.over.the.world.
91
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