A systematic study of two-staged upgrading process of vacuum residue for light fuel production has been carried out in a semi-batch binary reactor apparatus over Y, ZSM-5 and alkaline treated ZSM-5 zeolites. Prepared catalyst samples were characterized with XRD and BET. Density and Viscosity physical properties parameters estimation, as well as GC/SIMDIS analyses were conducted on liquid produc...

In this study, effective and easily accessible cheap catalysts that assist converting heavy oil residue to lighter products with high yield are investigated. Hydrocracking experiments were carried out in a 10 ml stainless steel bomb-type reactor up down stirrer at 200 times of reciprocation per minute. The catalyst mixture provided the minimum coke was FeSO4.H2O, binary mixtures FeSO4.H2O metal...

Substitution of coal in coking blend with bio-coal is a potential way to reduce fossil CO2 emissions from iron and steelmaking. The current study aims explore possible means counteract negative influence cokemaking. Washing kaolin coating bio-coals were conducted remove or bind part the compounds ash that catalyzes gasification coke CO2. To further how increase reactivity related more reactive ...

OBJECTIVES Characterisation of the airborne concentration of 13 polycyclic aromatic hydrocarbons (PAHs) at various workplaces in a graphite electrode and a coke production plant. Validation of the urinary excretion of 1-hydroxypyrene (hydroxypyrene) as a biological marker of exposure to PAH. DESIGN Cross sectional study of workers exposed to PAHs (106 in the graphite electrode producing plant...

Thermal treatment of CCA impregnated waste wood is a way to utilize the energy resource of the wood and at the same time to reduce the volume of the waste. An issue of concern in relation to the thermal treatment is As emission to the air. Meanwhile there is still a matter to cope with when methods to avoid As emission are implemented; the residues with increased concentrations of Cu, Cr and As...

Two factor analysis (FA)-based receptor modeling methods were applied to a polycyclic aromatic hydrocarbon (PAH) dataset from extracts of 75 PM(10) air particulate samples collected concurrently at 4 sampling sites proximate to the urban-industrial area in Hamilton, Ontario, Canada. The total PAH concentrations of 48 target compounds ranged from 0.23 to 172 ng m(-3). Principal component analysi...

BACKGROUND Coke oven workers are regularly exposed to coke oven emissions (COE) and may be at risk of developing lung diseases. There is limited evidence for the link between exposure to COE and chronic obstructive pulmonary diseases (COPD). The aim of this study was to explore the dose-response relationship between COE exposure and COPD and to assess the interaction with cigarette smoking. M...

DNA adducts derived from complex mixtures of polycyclic aromatic compounds emitted from tobacco smoke are compared to industrial pollution sources (e.g., coke ovens and aluminum smelters), smoky coal burning, and urban air pollution. Exposures to coke oven emissions and smoky coal, both potent rodent skin tumor initiators and lung carcinogens in humans, result in high levels of DNA adducts comp...

10 The development of hypersonic vehicles (up to Mach 10) leads to an important 11 heating of the whole structure. The fuel is thus used as a coolant. It presents an endothermic 12 decomposition with possible coke formation. Its additional permeation through the porous 13 structure involves internal convection. This implies very complex phenomena (heat and mass 14 transfers with chemistry). In ...