PROCESS ENGINEERING: A NEGLECTED TOOL IN WASTE MANAGEMENT AND PRODUCT UPGRADE IN NIGERIA

 Engr. Prof. Joseph Onyebuchi Okafor

Thursday 2nd September 2021

 This lecture has shown that:
i. Bone derived active carbon can be used in Bottling company effluent and those offensive odours in bottling company effluents were efficiently removed.

ii. The pilot plant that was designed and constructed is functional and is capable of purifying bottling company effluents to WHO admissible limits of effluent discharge into the environment. This can be modified to treat other liquid effluents from small scale, medium scale and large scale industries in Nigeria.


iii. Grade A shea butter at processing conditions of 4.33 days of SNCP, 10min SNBD and 86.23oC of SNDT resulted in shea butter of 2.869meq/kg of PV, 0.628% of FFA, percentage oil content of 53.58% and desirability index of 0.878.

iv. A rotary shea nut dryer was designed and fabricated and tested. The dryer was found to put some important process parameters under control.

v. Tensile strength and other Physico-chemical properties increased with the inclusion of cellulosic nanoparticles into the neat rubber matrix.

vi. The physicomechanical properties of these composites compared favourably well with rubber matrix reinforced with carbon black and therefore could be a replacement for carbon black.

vii. The final product has an enhanced aesthetic value whereas previously rubber products are black but this time around the colour ranges from grew white, light yellow and light brown.