Biosorptive Removal of Cu(II) from Aqueous Solutions by Using Carissa carandas and Syzygium aromaticum

Abstract

Biosorption of copper from aqueous solutions by Carissa carandas and Syzygium aromaticum was investigated in batch mode. Biosorptivity of both of these biosorbents has been correlated with the pH change, agitation time and dose of adsorbent and concentration of metal ions in the solution. Biosorbent Carissa carandas leaf powder showed higher sorption efficiency than that of biosorbent Syzygium arometicum powder under identical experimental conditions. Also, the adsorption of Cu(II) onto Syzygium arometicum was best described by the Langmuir isotherm model. The maximum adsorption capacities estimated from Langmuir isotherm model for Cu(II) were 54.2 mg/g and 76.61 mg/g for Carissa carandas and Syzygium arometicum respectively.

Adsorption of Cu(II) Ion onto Activated Eupatorium Adenophorum and Acer Oblongum: Thermodynamic, Kinetic and Equilibrium Studies

“…Scanning electronic microscopy (SEM) is one of the most used characterization techniques applied for the analysis of surface morphology, properties, porosity and texture morphology of adsorbent [19][20][21]28 . The surface morphology of AEA and AAO before and after metal ions adsorption is shown in Figure 3 …”

Equilibrium and Thermodynamic Studies of Pb(II), Cu(II) and Zn(II) Adsorption onto Dicliptera bupleuroides Leaves

“…In recent years, many plant materials have appeared in the development of low cost adsorbent prepared from cheaper and easily available materials. Some of the recent adsorbents used for removal of copper, zinc and lead are Olive pomace 16 , Phragmites australis shoot 17 , Azolla filiculoides 18 , Orange peels 19 , Carissa carandas and Syzygium aromaticum 20 . The objective of the present work is to investigate the possibility of the use of activated Dicliptera bupleuroides leaves (Figure 1) (DBL), as an alternative low-cost adsorbent for removal of Cu(II), Zn(II) and Pb(II) ions from synthetic waste water.…”