Biosorption isotherm and kinetic studies for the removal of Pb (II) and Fe (II) ions from synthetic waste water using unmodified Dennettia tripetala

Various heavy metals have been released into the waters, causing serious pollution of water resources and endangering human health. Therefore, it is very important to study removal from water. In this work, adsorption metal ions including Pb(II), Cu(II), Fe(II), onto Dennettia tripetala aqueous solutions was investigated in mixed systems. The batch experiment for on system studied at different conditions contact time, initial concentration, pH adsorbent dosage. results indicated that kinetics followed pseudo-first order model base R2 Fe(II) which 0.907, pseudo-second Pb(II) with = 0.70 respectively. Hence freundlich isotherm best fit 0.979 fits Temkin 0.930. final efficiencies maximum capacity > Cu(II) room temperature. bio-sorption determined by solution dose, found 7 optimal optimum below or above 7. demonstrated electrostatic interaction between surface played an role ions. addition, compared other researches, showed promoted since none co-exist one another.