Preparation and characterization of a new adsorbent from raphia taedigera seed
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Date
2019-09-16
Journal Title
Journal ISSN
Volume Title
Publisher
Research Group Publishers
Abstract
There has been widespread research and engagement in recent years on the
use of plant material in preparing porous carbon for wastewater treatment. In
this study, new biochars (BCs) impregnated with 0.1 M sulphuric acid (RTA)
and 0.1 M sodium hydroxide (RTB) were prepared. The BCs and raw seed
[RTR] were characterized using scanning electron microscopy (SEM), Four ier -
transform infrared (FTIR) spectrophotometer, and
thermogravimetric/Differential thermal analyser. [TGA/DTA) to determine
their morphology, spectral bands and thermal behaviour respectively. RTR
showed a scattered aggregated surface microstructure, while both RTA and
RTB gave aggregated rough surfaces with high number of pores. The FTIR
analysis showed significant changes in term of band shift, bands
disappearances, and new band formations due to pyrolysis and activation of the
BCs. The results of the TGA/DTA revealed that RTA and RTB have better
thermal stability than RTR, with the maximum degradation temperature of
RTR, RTA, and RTB occurred at 3800C, 4250C and 4100C respectively.
Adsorption efficiencies ranged from 81.671 to 99.743% for performance
evaluation on the BCs using different adsorbent dosages and the initial
concentrations of methylene blue solutions. These preliminary investigations
suggest that biochars prepared from Raphia taedigera seed can be used for
methylene blue removal from wastewater
Description
Staff Publication
Keywords
Raphia taedigera;, Adsorbent;, Carbonization;, Activation;, Methylene blue;, SEM