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Sorption Kinetics for the Removal of Methyl Violet Dye From Waste Water Using African Nutmeg as Biomass A.K. Asiagwu**, B O. Peretomo-Clarke and M. A. Okposo



JCBPS; Section D; November 2016 – January 2017, Vol. 7, No. 1; 097-106. E- ISSN: 2249 –1929 
Journal of Chemical, Biological and Physical Sciences
An International Peer Review E-3 Journal of Sciences
Available online atwww.jcbsc.org
Section D: Environmental Sciences
CODEN (USA): JCBPAT Research Article 

Sorption Kinetics for the Removal of Methyl Violet Dye 
From Waste Water Using African Nutmeg as Biomass
A.K. Asiagwu**, B O. Peretomo-Clarke and M. A. Okposo
Department of Chemistry, Delta Stare University, Abraka, Nigeria.
Received: 23 December 2016; Revised: 05 January 2017; Accepted: 08 January 2017

Abstract:
 This work presents the kinetic model for the sorption of methyl violet dye 
by African nutmeg (monodora myristica) shells. The effects of various experimental 
parameters such as pH, contact time, adsorbent dosage, temperature and dye ion 
concentration were evaluated. From the analysis, the amount of dye adsorbed 
increased from 1.41mg/L to 1.97mg/L with increase in contact time ranging from 20 
to 100 minutes. Adsorption also increased from 1.30mg/L to 1.70mg/L with increase 
in adsorbent dosage from 2 to 6g. It was also observed that increase in concentration 
from 10 to 50mg/L lead to increase in amount of dye adsorbed. Also, increase in pH 
from 2 to 10 lead to increase in amount of dye adsorbed from 0.74mg/L to 2.35mg/L. 
While in the effect of temperature, the amount of dye adsorbed decreased from 
2.53mg/L to 2.18mg/L with increase in temperature from 300C to 700C. There was an 
increase in the percentage of dye removed in the effects of temperature and 
concentration, while contact time, pH and adsorbent dosage, reverse was the case. 
The R2
values for the Langmuir and Freundlich isotherms were 0.600 and 0.920 
respectively, indicating that the Freundlich isotherm has a better relationship and is 
more suitable for describing the process. The pseudo-first and pseudo-second order 
kinetics were used to analyze the data and it was found that they had R2
values of 
0.766 and 1 respectively. By implication, the pseudo-second order model fit into it 
because of its R2
value. The Pseudo-second order agrees with the sorption process. 
Keywords: Dye removal, sorption kinetics and sorption models
INTRODUCTION 
The pressing need for cost-effective technique for the removal of dyes from waste water has triggered 
several researches unto the use of low-cost agro-waste as adsorbent. The presence of coloured 

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