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An understanding of the porosity of residual coal/char/ash samples from an air-blown packed bed reactor operating on inertinite-rich lump coal
(Elsevier, 2012)
The thermal treatment of coal causes a development of internal porosity of the resultant char due to the
changes in the coal char pores, i.e. the opening of original closed pores, the formation of new pores, and
an ...
The preparation of activated carbon from South African coal
(SAIMM, 2012)
Activated carbons used in the precious metals extraction industry
are characterized by large internal surface areas and a great affinity
for metal ions. The purpose of this research is to prepare activated
carbon from ...
Leaching of rare earth elements from bentonite clay
(The Southern African Institute of Mining and Metallurgy, 2012)
Due to increasing concerns of global rare earth element shortfalls in
the near future, possible alternative sources of rare earth elements
have recently become of economic interest. One such alternative is
decanting ...
The occurrence of hazardous volatile elements and nanoparticles in Bulgarian coal fly ashes and the effect on human health exposure
(Elsevier, 2012)
Low-rank, high-mineral matter Bulgarian coals were studied using a variety of chemical, optical, and electron
beam methods. The larger fly ash carbon phases include charred carbons in contrast to coked carbons present
in ...
Multi–Sphere Unit Cell model to calculate the effective thermal conductivity in packed pebble beds of mono–sized spheres
(Elsevier, 2012)
This paper presents a new approach to the calculation of the effective thermal conductivity in packed
pebble bed reactors, namely the Multi-sphere Unit Cell model. The model specifically accounts for the
porous structure, ...
Pebble Bed Micro Model system identification
(Elsevier, 2012)
Linear system identification techniques will be applied to obtain mathematical models of a simulation of the Pebble Bed Micro Model (PBMM). The PBMM is a conceptual model of the Pebble Bed Modular Reactor (PBMR), a new high ...
Fault diagnosis of generation IV nuclear HTGR components – Part 1. The error enthalpy-entropy graph approach
(Elsevier, 2012)
Fault diagnosis (FD) is an important element in modern nuclear power plant (NPP) diagnostic systems. In this respect, FD of generation II and III water-cooled nuclear energy systems has become an active research topic to ...
Fault diagnosis of generation IV nuclear HTGR components – Part 2. The area error enthalpy-entropy graph approach
(Elsevier, 2012)
The second paper in a two part series presents the area error method for generation of representative enthalpy–entropy (h–s) fault signatures to classify malfunctions in generation IV nuclear high temperature gas-cooled ...