Constructed wetlands are in use to improve the quality of contaminated groundwaters at many sites in the USA. Target contaminants include both organic and inorganic constituents. Volatile and nonvolatile hydrocarbons are found in ground water at closed petroleum refinery sites, and in leachates from landfills. Polycyclic aromatic hydrocarbons are pollutants at many sites. Chlorinated organics o...

UNLABELLED BACKGROUND Petroleum pollution is a global disaster and there are several soil cleaning methods including bioremediation. METHODS In a field study, fugal strains were isolated from oil-contaminated sites of Arak refinery (Iran) and their growth ability was checked in potato dextrose agar (PDA) media containing 0-10% v/v crude oil, the activity of three enzymes (Catalase, Peroxid...

Experiments were carried out to evaluate the batch adsorption of sulfur compounds from petroleum refinery wastewater on a chemically modified activated carbon (MAC). The modification technique enhances the removal capacity of carbon and therefore decreases cost-effective removal of sulfide from refinery wastewater. Different techniques have been used to characterize the modified activated carbo...

Intelligent production planning and scheduling are of paramount importance to ensure refinery profitability, logistic reliability and safety at the local and corporate levels. In Brazil, such activities play a particularly critical role, since the Brazilian downstream model is moving towards a demand-driven model rather than a supply-driven one. Moreover, new and specialized non-linear constrai...

Background. Thirty refineries operate within Japan with a total crude processing capacity of about 4.8 million bpd. Capacity and total product demand is closely balanced. Almost all refined products are sold to the domestic market, although Japanese refineries occasionally import and export products between other Asian countries. The Japanese petroleum businesses, once protected, faced tough co...

BACKGROUND Little is known about the respiratory effects of short-term exposures to petroleum refinery emissions in young children. This study is an extension of an ecologic study that found an increased rate of hospitalizations for respiratory conditions among children living near petroleum refineries in Montreal (Canada). METHODS We used a time-stratified case-crossover design to assess the...

To study the migration and variation rule of petroleum pollutants in soil evaluate condition, field investigation is carried out a refinery Yunnan Province relevant data are collected. Then, sampling leaching experiments on land refinery. Finally, experimental sorted out. The results show that pollution surface most serious. Because adsorb-ability soil, content deep less. diffusion process grea...