Abstract
The use of adsorbent prepared from sugarcane bagasse, an agro waste from sugar industries has been studied as an alternative substitute for activated carbon for the removal of dyes from aqueous solution. Adsorbents prepared from sugarcane bagasse modified with citric acid was used as a low-cost biosorbent for removal of dyes from the aqueous solution. Adsorption parameters such as initial pH values, dyes concentrations, adsorbent dosages and contact times were investigated by the batch experiments. The Freundlich and Langmuir adsorption isotherm models were used to evaluate the experimental data. The results showed that the adsorption process of dyes onto the modified sugarcane bagasse leaned towards Langmuir model for MSB and Freundlich for SB. Maximum adsorption capacity of MSB was found to be 8.40 mg/g at pH 9. The results showed that the modified sugarcane bagasse with citric acid could be a potential low-priced adsorbent for removal of the color from the aqueous solution.
Highlights
Dye production industries and many other industries which use dyes and pigments generate wastewater, which is characteristically high in color and organic content [1]
When comparing the FTIR spectrum of modified sugarcane bagasse (MSB) to the one of sugarcane bagasse (SB), the higher intensity of the peak at 1730 cm-1 confirmed by the presence of carboxyl groups in citric acid, leading to the increase the adsorption capacity of MSB for dyes
The results showed that the percentage of dye removal decreased with increasing pH values
Summary
Dye production industries and many other industries which use dyes and pigments generate wastewater, which is characteristically high in color and organic content [1]. About 1000 L of water is used for every 1000 kg clothes processed It is estimated about 10–15% of the dyes were lost in industrial effluent [3, 4]. Discharge of such coloured effluents impart the colour to the receiving water bodies (rivers, stream and lakes) and causes many significant problems such as increasing the toxicity and chemical oxygen demand. It reduces light penetration which is a derogatory effect on photosynthesis phenomena [4, 5]. Wastewater with dyes is very difficult to treat, since the dyes are recalcitrant organic molecules, resistant to aerobic digestion and stable to light, heat and oxidizing agent [1, 6]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Science and Technology Development Journal - Natural Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
