Adsorption is a chemical method for water purification. In the present study, native and impregnated active carbon was used for adsorption to evaluate the efficacy of the process in manganese removal from aqueous solutions. Impregnation reaction was performed using the precipitate colloids of manganese oxides onto the carbon surface. X-ray diffraction, Fourier-transform infrared spectroscopy, a...

The lifetime and spatial distributions of accumulation-mode aerosols in a size range of approximately 0.05-1 μm, and thus their global and regional climate impacts, are primarily constrained by their removal via cloud and precipitation (wet removal). However, the microphysical process that predominantly controls the removal efficiency remains unidentified because of observational difficulties. ...

this research was conducted to study the effect of lime based flux with the composition of cao-20%caf2-8%feo on simultaneous removal of phosphorus and sulfur from hot metal. the effects of na2o and oxygen blowing were also studied. the experiments were performed using an induction furnace and hot metal produced in isfahan steel company in the temperature range 1350-1450 ºc. the results showed t...

this research compares the performance of floating systems planted with vetiveria zizanioides as a hydroponic approach for removing nutrients from two contaminated waters. for this purpose, two pilots with overall net volume of 60 litres were constructed and inoculated by secondary treated domestic wastewater (stdw) and irrigation water obtained from minab reservoir (iwmr) in batch mode. regard...

background: among alkanes, n-alkanes with medium chain have been identified as the most important contaminants of the soil. n-hexadecane (c16h34) with low solubility in water also belongs to this group and has been used by many researchers as a model contaminant. the present study aimed to investigate the effect of the external source of carbon (glucose) as co-substrate on removal of hexadecane...

Structured catalysts for the simultaneous removal of soot and nitrogen oxides were prepared by means of coating cordierite monoliths with alumina-based suspensions containing Cu, Co or Fe and Cs as the catalytically active phase. Textural and chemical properties of the coated monoliths were determined by means of N2-physisorption, SEM and temperature programmed reduction. Their activity in the ...