Open AccessInsight into the Sorption and Activation Energy Phenomenon of Kenaf Shive Sorbents in Crude Oil/Water Mixture
Author(s) -
M. Salisu,
Yahya Gambo,
Mohammed Awwal Suleiman,
Mohammed Kabir Yakubu,
Basheer Hasan Diya’uddeen,
S. U. Ishiaku,
S. P. Ukanah
Publication year - 2021
Publication title -
chemical science international journal
Language(s) - English
Resource type - Journals
ISSN - 2456-706X
DOI - 10.9734/csji/2021/v30i1130264
Subject(s) - sorption , kenaf , materials science , thermogravimetric analysis , sorbent , fourier transform infrared spectroscopy , adsorption , chemical engineering , langmuir adsorption model , composite material , fiber , chemistry , organic chemistry , engineering
The secondary effect discovery of synthetic sorbents opened another research direction for many field of studies. However, the sorption parameters of lignocellulosic sorbents are rarely reported most importantly, kenaf shive. This paper centered at the sorption behavior of optimized kenaf shive sorbents using Response Surface Methodology (RSM) via surface deposit technique. Five-level Central Composite Design (CCD) experimental matrix was used to analyze the effect of particle sizes (125-1000 µm), stirring time (5-30min) and methyltrimethoxysilane (MTMS) concentration (5-20% v/v) as individual and combined variables process in the developed sorbents. The unmodified shive was compared with the modified, and it reveals a positive shift in the sorption capability. Instrumental analysis such as FTIR (Fourier Transform Infra-Red), DT-TGA (Differential Thermal-Thermogravimetric analysis) and BET (Brunaure-Emmett-Teller) were carried out on the optimized sorbent and the results were in conformity with the sorption results. The sorption behavior deployed fits the pseudo-first-order and Langmuir isotherm with regression coefficient R2=0.9496 and R2=0.9400. The sorption property was found to be spontaneous and exothermic, however, the activation energy studies shows physic-sorption phenomenon with 25.3 kJmol-1 and R2=0.9360.