Preparation and characterization of fe-co-zn trimetal oxide nanocomposites and their antibacterial activity and used as adsorbent for remediation of metals in the textile waste water

摘要

A new class of Fe-Co-Zn trimetal oxide nanocomposites was prepared through co-precipitation method and it is used as an adsorbent for the removal of heavy metal Cr (VI) ions from water. The analysis of FTIR, SEM, ED AX were recorded before and after adsorption to explore the number and position of the functional group available for heavy metal binding on to the adsorbent and changes in surface morphology and elemental constitution of the adsorbent. The effect of various factors such as solution pH, initial metal ion concentration, contact time, adsorbent dose and influence of other ions were studied in batch mode experiments. The effects of the presence of one metal ion on the adsorption of the other metal ion were investigated. The experimental results indicated that the uptake capacity of one metal ion was reduced by the presence of the other metal ion. The maximum adsorption of Cr (VI) was observed at pH 6.00 for Fe-Co-Zn trimetal oxide nanocomposites (76 %). The main focus of the work will be to recover, adsorbed the used adsorbent contaminant and regenerate the adsorbent for its reusing is of great importance for environmental and economical reasons, Fe-Co-Zn trimetal oxide nanocomposites recovered by desorption method by using proper desorption agent like H2O by batch mode study. The equilibrium data of the adsorption was well fitted to the Langmuir isotherm. The adsorption process follows the pseudo-second-order kinetic model.The synthesized Fe-Co-Zn trimetal oxide nano particles showed enhanced removal of Cr (VI) ions from water. This work demonstrates that synthesized Fe-Co-Zn trimetal oxide Nano particles can be considered as potential Nano-adsorbent. Fe-Co-Zn trimetal oxide Nano particles have good antibacterial activity.