The influence of catalyst support alumina-silica in terms of different Al2O3 to SiO2 mole ratios containing 20 wt.% Ni on the production of hydrogen and catalyst coke formation from the pyrolysis-catalysis of waste tyres is reported. A two-stage reactor system was used with pyrolysis of the tyres followed by catalytic reaction. There was only a small difference in the total gas yield and hydrog...

Theoretically, a haplotype has a higher level of heterozygosity than individual single nucleotide polymorphism (SNP) and the association study based on the haplotype may have an increased power for detecting disease associations compared with SNP-based analysis. In this study, we investigated the effects of four haplotype-tagging SNPs (htSNP) and the inferred haplotype pairs of the X-ray cross-...

We evaluated humoral immunity by measuring IgG, IgA, IgM, and IgE concentrations in 274 male workers in an iron foundry in Cracow, Poland. There were two groups: 199 coke oven workers and 76 cold-rolling mill workers. The groups were similar with respect to age, length of work (average 15 years), and smoking habits. Exposure to polycyclic aromatic hydrocarbons (PAHs), assessed by personal and a...

The article compares the efficiencies of coke plant wastewater treatment in the integrated systems that combine physicochemical and chemical purification methods with ultrafiltration and reverse osmosis. The wastewater treated came from the “Coke Plant Czestochowa New”. In the process of volume coagulation the coagulant used was sulfate (VI) iron (III)-PIX-113, with the dosage of 400 mg/dm and ...

A large amount of COG (coke oven gas) is produced from coking plants every year, which contains 55–60% H2. In this work, the breakthrough separation H2 with ZIF-8/ethylene glycol-water slurry was studied. Following investigation (ab-ad)sorption isotherms single component gas CH4 and H2, main components coke gas, in different slurries their corresponding viscosities, influence operating conditio...

The catalytic cracking of methane over nickel gauze is proposed as an attractive alternative for the production of CO-free hydrogen. The catalyst deactivates due to intensive coke deposition. Therefore, the reactor was operated periodically with the reaction followed by the catalyst regeneration by burning of coke in oxidative atmosphere. The optimal reaction performance was found to consist of...

The catalytic gasification of petroleum coke with different ratios K2CO3 was investigated by a thermogravimetric analyzer (TGA) using the non-isothermal method. initial, peak, and final temperatures decreased greatly as amount increased, reaction became saturated at concentration K+ higher than 5 mmol/g; further increase in catalyst; rate varied slightly, but no inhibition effect observed. vapo...

The surface chemistry of methane on Ni-ZrO2 and bimetallic CuNi-ZrO2 catalysts and the stability of the CuNi alloy under reaction conditions of methane decomposition were investigated by combining reactivity measurements and in situ synchrotron-based near-ambient pressure XPS. Cu was selected as an exemplary promoter for modifying the reactivity of Ni and enhancing the resistance against coke f...

In China, the risk of getting lung cancer from inhaled polycyclic aromatic hydrocarbons (PAHs) is higher in eastern portions of the country, and greater in major cities than in rural areas, researchers have found. Yanxu Zhang et al. modeled the amount of PAH emissions nationwide and characteristics of Chinese populations to determine their risk for lung cancer. Variation in genetic susceptibili...