Andere Kunden interessierten sich auch für
![Activated Carbon From Shells of Walnut Almond Poplar Tree Wood for Phenolics and Heavy Metals Adsorption From Contaminated Water]( "Activated Carbon From Shells of Walnut Almond Poplar Tree Wood for Phenolics and Heavy Metals Adsorption From Contaminated Water")
Activated Carbon From Shells of Walnut Almond Poplar Tree Wood for Phenolics and Heavy Metals Adsorption From Contaminated Water26,99 €![Effect of Roasting on the extent of heavy metals present in dry fruits]( "Effect of Roasting on the extent of heavy metals present in dry fruits")
Effect of Roasting on the extent of heavy metals present in dry fruits32,99 €![Phytoremediation of Heavy Metals from Wastewater and Polluted Soil]( "Phytoremediation of Heavy Metals from Wastewater and Polluted Soil")
Phytoremediation of Heavy Metals from Wastewater and Polluted Soil23,99 €![Rice RootKnot Nematode: Effect on uptake of nutrients and heavy metals]( "Rice RootKnot Nematode: Effect on uptake of nutrients and heavy metals")
Rice RootKnot Nematode: Effect on uptake of nutrients and heavy metals36,99 €![Status of Selected Heavy Metals in Indian Hares]( "Status of Selected Heavy Metals in Indian Hares")
Status of Selected Heavy Metals in Indian Hares23,99 €![Heavy Metals Profile in River]( "Heavy Metals Profile in River")
Heavy Metals Profile in River36,99 €![Removal of Heavy Metals from Wastewater by MgO and ZnO Nanoparticles]( "Removal of Heavy Metals from Wastewater by MgO and ZnO Nanoparticles")
Removal of Heavy Metals from Wastewater by MgO and ZnO Nanoparticles36,99 €
The project was concerned with the potential use of natural waste materials of used tea leaves and coffee grounds, as natural adsorbents for the removal of trace metals from water. The adsorption of the metal ions Cu² , Zn² , Cd² and Pb² by these adsorbents was investigated using batch adsorption methods to determine the effects of pH, metal ion concentration, adsorbent concentration, temperature and metal ion competition. The competitive effects of soluble material leached from the adsorbents that also bind metal ions were studied. The adsorption of the metal ions was found to follow the Langmuir adsorption isotherm. However, the maximum adsorption density was found to depend on the concentration of coffee adsorbent present. Column adsorption studies showed that metal ions adsorbed by coffee grounds could be leached in dilute acid solution without any loss of subsequent adsorption properties. The acid base chemistry of both tea leaves and coffee grounds, and the soluble materials leached from the fresh tea and coffee, were studied using potentiometric titration. The stoichiometry of metal ion adsorption is not simple as it may involve more than one type of adsorption site.