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Articles by M.S. Rana
Total Records ( 2 ) for M.S. Rana
  M.S. Rana , M.A. Halim , S.A.M. Waliul Hoque , Kamrul Hasan and M.K. Hossain
  The present research investigated the arsenic removal performance of prepared and commercial crab shell chitosan by adsorption filtration method. The ability of chitosan to remove arsenic from prepared arsenic contaminated solution was examined by Atomic Absorption Spectrometry (AAS). It is found that the saturation volume of prepared chitosan for l0 mg L-1 As3+/As5+ solution was 8.55 L and its arsenic removal capacity was 6244.2 mg kg-1. For commercial chitosan, the saturation volume for low and high molecular weight chitosan was 1.3 and 0.45 L and their arsenic removal capacity were 461.8 and 149.5 mg kg-1, respectively. The FT-IR study also confirmed that prepared chitosan’s arsenic removal capacity was higher than that of low and high molecular weight commercial chitosan due to the free amino group.
  M.S. Rana , M.A. Halim , S. Safiullah , M. Mamun Mollah , M.S. Azam , M.A. Goni , M. Kamal Hossain and M.M. Rana
  The study focuses on potential of using crab shell chitosan as a low-cost biosorbent, for heavy metals removal from aqueous solutions in an adsorption filtration system. Chitosan was synthesized from chitin by the treatment of strong alkali solution under reflux condition and chitin was extracted from crab shell followed by decalcification and deproteinization treatment. Spectrometric (AA and UV) method was employed to detect the heavy metals concentration. Prepared 10 mg L-1 solutions of zinc, lead, cadmium, cobalt, nickel, chromium, manganese and iron were passed through the 5 g of chitosan separately and it was found that chitosan was excellent adsorbent in removing mentioned heavy metals. The removal efficiency of chitosan was in the following order Mn>Cd>Zn>Co>Ni>Fe>Pb>Cr. The result also showed that the time required for 100% breakthrough of prepared chitosan for Mn and Zn was approximately 27 and 23 h whereas it was only 16 h for both Cr and Pb, respectively. The research revealed that prepared chitosan showed better removal performance for Mn, Cd, Zn whereas the removal efficiency was satisfactory for Co, Ni and Fe but it exhibited relatively least performance for Pb and Cr.
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