Abstract Sago wastewater is 94% of the water produced from sago processing that could pollute environment. One biological treatments to solve this problem use mutualism symbiotic between microalgae Chlorella sp. and agrobost with addition 5.000 lux constant light. The purpose research was develop technology for aerobic bacteria in decomposition liquid waste, particular optimizing photosynthesis...

Large quantities of wastewater are generated by the petroleum refining process. Micron-scale emulsion droplets and submicron difficult to remove from oil-refined wastewater, addressing these issues has been a major challenge for researchers. Membrane technology is widely used in water treatment because it very selective effective filtration his research focuses on oil refinery using polysulfone...

The health risk resulting from benzene exposure in petroleum refineries was calculated using data from the scientific literature from various countries throughout the world. The exposure data was collated into four scenarios from petroleum refinery environments and plotted as cumulative probability distributions (CPD) plots. Health risk was evaluated for each scenario using the Hazard Quotient ...

BACKGROUND Occupational exposure to nickel (Ni) is associated with an increased risk of lung and nasal cancers. Ni compounds exhibit weak mutagenic activity, alter the cell's epigenetic homeostasis, and activate signaling pathways. However, changes in gene expression associated with Ni exposure have only been investigated in vitro. This study was conducted in a Chinese population to determine w...

Refinery sludge is one of the major industrial wastes that needs to be handled and treated . Therefore, this study aim to investigate the Kinetics of devolatilization and oxidation of the refinery sludge collected from a typical petroleum refinery plant located in Malaysia . Thermo Gravimetric Analyzer (TGA) was used in this study for modeling of the devolatilization and oxidation processes in ...

Tree swallow (Tachycineta bicolor) and house wren (Troglodytes aedon) eggs and chicks were collected near a refinery site on the North Platte River, Casper. Wyoming, USA and at a reference site 10 km upstream. Total polycyclic aromatic hydrocarbon (PAH) concentrations in swallow and wren chicks were higher at the refinery site than at the reference site. Polycyclic aromatic hydrocarbon concentr...

Wastewater is not a liability, instead considered as resource for microbial fermentation and value-added products. Most of the wastewater contains various nutrients like nitrates phosphates apart from organic constituents that favor growth. Microalgae are unicellular aquatic organisms widely used treatment. Various cultivation methods such open, closed, integrated have been reported microalgal ...

This paper presents the results of an investigation into the treatment of Tehran Refinery effluents in UASB reactors. Four pilot-scale UASB reactors were built with similar dimensions, each with a volume of 45.78 1, and operated in parallel at 37 °C. The sludge seed was prepared from the waste activated sludge of the wastewater treatment unit of the refinery. The organic loading rates were grad...