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Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic

100%

Pawluk K., Fronczyk J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

2015

tom 47

nr 1

Activated carbon is an effective sorbent for removing organic and inorganic contaminants from aqueous solutions. In conducted experiments, granulated activated carbon (GAC) was used to examine the adsorption processes of heavy metals (Cd, Cu, Ni, Pb and Zn). Studies (performed in batch system) were carried out as a function of time, heavy metals concentration and pH values. The obtained results show that GAC effectively removes mentioned metals. Numerous kinetic models were used to investigate the mechanism of adsorption processes. Using the Langmuir isotherm, the maximum adsorption capacities were calculated to be 3.010, 3.662, 4.430, 3.800 and 4.169 mg·g–1 for Cd, Cu, Ni, Pb and Zn, respectively, in neutral conditions and 2.684, 2.578, 3.482, 2.592 and 2.253 mg·g -1 in acidic conditions.

Contamination of runoff waters from roads with high traffic intensity in the urban region of Gdansk, Poland

100%

Polkowska Z., Zabiegala B., Gorecki T., Namiesnik J.

Polish Journal of Environmental Studies

2005

tom 14

nr 6

Our paper presents the results of determination of road runoff water pollutants. Samples of runoff waters were collected at six sites with high traffic intensity located along a major transportation route from the city of Reda to the city of Gdańsk, and at one site with low traffic intensity located in Reda. Sampling was carried out over a period of two months in the fall of 2000. Additional samples were collected in March 2001. The analytes determined in the samples included organochlorine, organonitrogen and organophosphorus pesticides, selected volatile organohalogen compounds, petroleum hydrocarbons, as well as selected anions and cations. Total organic carbon (TOC) was also determined. In the petroleum hydrocarbons group, the highest concentrations were recorded for methyl tert-butyl ether (MTBE). Heptachlor epoxide and o, p'-DDE (DDT metabolite) were detected most often among the pesticides. Sulphate ions were found in all samples. Very high concentrations of sodium and chloride ions were measured in samples collected directly before the winter season. Overall, the results confirmed that road runoff waters are heavily polluted and their quality should be monitored.

Ograniczanie wyników

1 Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

1 Polish Journal of Environmental Studies

1 Fronczyk J.

1 Gorecki T.

1 Namiesnik J.

1 Pawluk K.

1 Polkowska Z.

1 Zabiegala B.

1 2015

1 2005

Wyniki wyszukiwania

Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic

Contamination of runoff waters from roads with high traffic intensity in the urban region of Gdansk, Poland