Refine search
Results 1-3 of 3
Removal of Cu++ ions from aqueous solution by bisorbent based on Lagenaria vulgaris shell | Uklanjanje Cu++ jona iz vodenih rastvora biosorbentom na bazi kore Lagenaria vulgaris
2009
Bojic, A., Univerzitet u Nisu, Nis (Serbia). Prirodno-matematicki fakultet, Odsek za hemiju | Mitic-Stojanovic, D.L., JP Vodovod, Vranje (Serbia) | Bojic, d., Univerzitet u Nisu, Nis (Serbia). Prirodno-matematicki fakultet, Odsek za hemiju | Andjelkovic, T., Univerzitet u Nisu, Nis (Serbia). Prirodno-matematicki fakultet, Odsek za hemiju
This study investigates the effect of pH, temperature, contact time and initial metal concentration on Cu++ ions removal from water solutions, using biomass of Lagenaria vulgaris skin (LV). With higher pH, the efficiency of copper sorption increases and reaches its maximum at pH 7.0. Temperature has negative effect on sorption process due to its exothermic properties. Biosorption efficiency increases with time and reaches equilibium after 40 min. Increasing initial copper concentration gives an increase in biosorbent sorption capacity, and a proportional decrease in treatment efficiency. Obtained results have shown that LV based biosorbent is an efficient and available mean for toxic metal removal from natural and waste waters.
Show more [+] Less [-]Cu and Cd adsorption on river sediment | Adsorpcija Cu i Cd na recnom sedimentu
2009
Colic, J., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia) | Petkovic, A., Institut za vodoprivredu Jaroslav Cerni, Beograd (Serbia)
A batch adsorption test was conducted to examine the adsorption characteristics of cadmium and copper on bed sediments of the Sava river and its relation to the concentration of dissolved metals. The adsorption of ions were studied using equilibrium technique as a function of adsorbate concentration. The adsorption data, over the whole range of concentrations used, follow the Langmuir adsorption isotherm. Cu2+ and Cd2+ adsorption isotherms were measured on some sediment samples obtained from 3 different sites.
Show more [+] Less [-]The degree of metals (Fe and Cu) accumulation in aquatic macrophytes in lakes near city Kragujevac [Serbia] | Stepen akumulacije metala (Fe i Cu) u nekim vodenim makrofitama jezera u okolini Kragujevca [Srbija]
2008
Brankovic, S., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Pavlovic, D., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Topuzovic, M., Prirodno-matematicki fakultet, Kragujevac (Serbia) | Milivojevic, J., Institut za strna zita, Kragujevac (Serbia)
The results of researches of the degree of metals (Fe and Cu) of accumulation in certain species aquatic macrophytes and their organs which sampled in three lakes near city Kragujevac are exposed in this study. The results show variability of the degree of accumation of Fe and Cu among species, their organs and researched localities, and capacity of some aquatic macrophytes species and their organs which accumulate high level of mentioned metals from aquatic environment. Results obtained in this reserches pointed important role of macrophytes vegetation in bioindication and phytoremediation, and ability for use for monitoring pollutants, in studies of quality aquatic ecosystems and their protection, repairing and revitalization.
Show more [+] Less [-]