EFFECTIVENESS OF CHITOSAN AND NANO–CHITOSAN FOR PHENOL REMOVAL FROM REFINERY EFFLUENT
2024
Ibrahim, Abubakar Abubakar | Abdulfatai , Jimoh
Water is fundamental to all living creatures but unfortunately, it is the most poorly managed resource on the earth.Refinery discharges are parts of ways water sources are contaminated and prominent water contaminants include phenol which are more often discharged without treatment.Phenol is considered to be a very toxic pollutant in refinery wastewater which poses danger to man and its environment. In the present study, the goal was to establish the effectiveness of phenol removal using chitosan and nano – chitosan obtained from crab shells. The experiments were conducted at various conditions for both chitosan, nano – chitosan to achieve basic polysaccharide of low molecular weight chitosan (LMWC) and low molecular weight nano – chitosan (LMWNC) for removal of phenol from the refinery wastewater. Various techniques were used to characterize both chitosan, nano -chitosan and refinery wastewater, such as Double beam UV- spectrophotometer, Fourier Transforms Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Dynamic Light Scattering (DLS), Shaking Water Bath and Viscometer.The characterization of obtained chitosan and nano-chitosan absorbents showed good surface area, high pore sizes, effective size reduction yield of over 80 %, effective demineralization with good content of macro elements and good molecular weight and viscosity relationships. The values of calcium were 6.6972, 5.6422 for CTS and NCTS respectively. The results of interaction revealed at factors of 35 % sodium hydroxide, 3 h and 75 oC gives the degree of deacetylation (DD) to be 81.75 %. Phenol removal was compared with both chitosan and nano – chitosan respectively. The modified chitosan known as nano – chitosan enhancesthe adsorption capacity due to higher surface areas.
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