Treatment of Cr (VI) Contaminated Waste Water Using Biosorbent Prunus Amygdalus (Almond) Nut Shell CarbonAuthor(s): Mosleh M. Manfe, S. J. Attar, M. Parande and Niraj S. Topare
Increase in population coupled with mining, extraction and use of various metals as different industrial and household materials, the load of toxic metal pollution in the environment is increasing. The waste from metallurgical/mining sectors, in general, creates destabilization in the ecosystem, as most of the heavy metal ions are toxic to the living organisms. The demand of chromium has been increasing globally because of its extensive use in various metallurgical, chemical and leather tanning industries due to its various physico-chemical properties. The present paper deals with the adsorption of Cr (VI) using a Prunus Amygdalus (Almond nutshell). The uptake capacity of the present adsorbent was studied as a function of contact time, pH, adsorbate concentration and adsorbent dose. From the time variation experiments, the equilibrium contact time was found to be 6 hr. Cr (VI) uptake capacity of the adsorbent increased with decrease in pH. The maximum uptake capacity of the adsorbent was observed at pH 1.8. The adsorption capacity of the adsorbent was found to increase with increase in adsorbate concentration, whereas it decreased with increasing in adsorbent dose.