International Research Journal Of Pure & Applied Chemistry 19(1): 19, 2019; Article No. IRJPAC.49474 ISSN: 22313443, NLM ID: 101647669
Efficiency Of Sawdust From Selected African Indigenous Wood Spp. As A Lowcost Adsorbent For Removal Of Copper Ion From Contaminated Water
E. A. Iyiola, J. M. Owoyemi, O. Olasunkanmi, T. P. Saliu, B. Olufemi, D.O. Dania, S.O. Ayanleye And A. Wekesa.
This study investigates the use of sawdust from 3 hardwood species as lowcost
the removal of copper from contaminated water. The experimental design used for this study
was 3 x 2 x 4 factorial experiment; the different sawdust species, two baselines (treated and
untreated) and four levels of pH and time as factors were combined and used for the study.
Test was carried out to investigate the effect of sawdust pretreatment
on their adsorption
capacity in the removal of Copper ions from contaminated water at different pH levels; the
sawdust samples were sieved through a screen size of 850 ?m after which a portion of each
species sawdust was subjected to pretreatment
by boiling while the other portions were
maintained as control samples (untreated). The results show that adsorption capacity for both
treated and untreated samples were 69.75±13.78%, 68.60±19.48%, 69.34±23.08%,
74.79±17.79%, 74.52±22.30% and 76.90±18.21% for Alstonia boonei, Erythrophleum
suaveolens and Ficus mucuso respectively. The contact time and pH showed no significant
difference between the treated and untreated samples. Sawdust from the selected wood
species are suitable to be used as adsorbent towards the removal of copper from contaminated
Applied Tropical Agriculture Volume
Assessment Of Density And Anatomical Properties Of Nigerian Grown Cocos Nucifera Wood
Owoyemi, J.M. And Akinwamide, T.O.
The knowledge of density and anatomical features of wood is required to understand its
morphology prior to its use in order to recommend appropriate treatments and application.
Anatomy of coconut wood with its density was investigated in this study. Methods used
include sectioning and fibre characterization both along and across the stem of the tree. The
mean results obtained for the Fibre Length, Fibre Diameter, Lumen Width and Vessel
Diameter were 1.49mm, 0.030mm, 0.02mm, and 0.27mm in that order. Its density was found
to vary along the stem. The basic density distribution of Cocos nucifera showed that the
middle portion has the highest density of 1107.85kg/m3, followed closely by the base portion
with 1052.67 kg/m3 while the top portion recorded the least density of 1003.79 kg/m3. Both
the density and anatomical results showed a comparable value which make it a suitable
alternative for timber.
PRO LIGNO Vol. 15 N° 2 2019 Pp. 3037 ONLINE ISSN 20697430 ISSNL 18414737 Www.proligno.ro
A Study Of Combustion Properties Of Briquettes Produced From A Blend Of Sawdust Banana Leaves And Cow Dung In Nigeria
Ebenezer Iyiola, Motunrayo Ogunleye, Babatola Olufemi, Jacob Owoyemi, And Samuel Ayanleye
The study was undertaken to evaluate the combustion properties of briquettes from wood and
agricultural wastes. Terminalia superba sawdust and banana leaves were used and cow dung
acting as binder in varying mixing ratios. The briquettes were produced using an automatic
press at a constant compaction pressure of 1.77kN/m2 and the substrate were combined at
ratios 5:1:4, 4:4:2, 3:2:5, and 2:5:3, the briquettes produced were subjected to combustion
tests. Combustion related properties such as percentage volatile matter, percentage ash of the
briquettes was determined. The compressed density ranged between 517.09 ± 35.40kg/m3 and
571.29 ± 28.73kg/m3, while the reduction in density which signifies the rate at which the
briquettes reduced in density after compression and relaxation ranged between 46.82±2.56
kg/m3 and 55.81±1.80kg/m3 respectively. The result from this study shown that briquette in
ratios of 2:5:3 and 3:2:5 show better combustion properties than others.