55th Inaugural Lecture - 2007 by Prof. O. Akaranta - University of ...

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alternatives to the non-renewable resources. Periasamy et al(1991) carbonised peanut shells and found the resultantactivated carbons to be more efficient in removing mercuryand chromium (VI) ions from effluents than commerciallyavailable activated carbons.Palm kernel shell has been successfully carbonised andthe resultant product used for the adsorption of dyestuffs fromaqueous solutions (Odozi and Akaranta, 1986). The effects ofcarbonisation (activation) temperatures and oxidationconditions were compared with respect to the adsorptiveproperties of the resultant carbons. The adsorptive capacity ofthe carbons increased with increase in activation temperaturefrom 600 0 C to 1000 0 C and the nitric acid oxidized carbonsexhibited better adsorption properties than those oxidized withpotassium permanganate. Yield of the activated carbonsdecreased when activation temperature is increased beyond800 0 C. An activation temperature of 800 0 C was found to be theoptimum temperature for the production of high yield andeffective activated carbon from palm kernel shell.32
RECOMMENDATIONSIt is customary on an occasion of this nature to makesome recommendations based on one’s experiences andresearch findings. From the studies so far carried out on agrowastesutilization, it is clear that agricultural wastes can playimportant roles as sources of industrial raw materials and inthe treatment of industrial effluents.i) In this era of rising cost of petroleum and its products,the use of renewable resources such as agriculturalwastes as sources of industrial raw materials for theproduction of some industrial products isrecommended.ii)Indiscriminate discharge of industrial and domesticwastes into the receiving environment has beenimplicated as the major source of the highconcentrations of some heavy metal ions in our ecosystem.The Federal and State Governments shoulddevice means of controlling the indiscriminatedischarge of untreated industrial and domestic wastes33
Page 1 and 2: UNIVERSITY OF PORT HARCOURTAGRO WAS
Page 3 and 4: The Vice - Chancellor, Sir,Members
Page 6 and 7: Table 1: Residues from the Processi
Page 8 and 9: usually used in the production of s
Page 10 and 11: Orange Seed and Peel OilsAll seeds
Page 12 and 13: satisfied International Standards O
Page 14 and 15: Figure 2:A Red Onion Skin Extract A
Page 16 and 17: of lignocellulosic materials for ch
Page 18 and 19: Pentosan an aldopentose furfural(in
Page 20 and 21: HOHOOH + ClCH 2COONaalkalinesolutio
Page 22 and 23: peel has been reported as a good po
Page 24 and 25: with superphosphates and used as co
Page 26 and 27: (Azbar et al 2004). The methods inc
Page 28 and 29: polymerized onion skin is highly ef
Page 30 and 31: substrate is in the following decre
Page 32 and 33: Figure 3: A Schematic Representatio
Page 36 and 37: into our environment. The guideline
Page 38 and 39: CONCLUDING REMARKSMr. Vice - Chance
Page 40 and 41: REFERENCESAdebowale, E.A (1985), No
Page 42 and 43: Akaranta, O. and Anusiem, A.C. I. (
Page 44 and 45: Halliday, D. (1975), Animal Blood a
Page 46 and 47: Thickeners in Latex Paints, Carbohy
Page 48 and 49: Critical Review on Current Treatmen

55th Inaugural Lecture - 2007 by Prof. O. Akaranta - University of ...

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