Abstract :
Adsorption of contaminants in textile wastewater onto activated carbon derived from two wood species has been studied using batch-adsorption techniques. This study was carried out to examine the removal efficiency of the low-cost adsorbent (Afzelia africana) AFA and (Acacia albida) ACA for the removal of heavy metals and other organic contaminants from textile effluents. The influence of contact time and adsorbent dose kept constant on the adsorption process was also studied. Removal efficiency increased with increase in contact time. The two adsorbents had an average removal efficiency of 60% at 90mins contact time for Zn. The ACA had higher removal efficiency for chromium at all contact times than AFA except at 120mins contact time where there existed a slight difference in the removal efficiency between the two adsorbents. Removal efficiency of iron was high between 58.18- 70.52% and 72.75-75.86% for AFA and ACA carbon respectively. This showed that iron had high affinity to the adsorbents surface. It was observed that AFA exhibited highest removal efficiency for nitrate at all contact times as compared to ACA. Results indicated that the freely abundant, locally available, low-cost adsorbent derived from the two wood species could be treated as being economically viable for the removal of contaminants from textile effluents.
Keywords :
Adsorption, Contaminants, Effluent, Environment, Heavy Metals, PollutionReferences :
1. Mittal, A.; Teotia, M.; Soni, R.K. and Mittal, J. 2016. Applications of egg shell and egg shell membrane as adsorbents: A Review, Journal of Molecular Liquids. doi: 10.1016/j.molliq.2016.08.065
2. Okafor, J.O.; Agbajelola, D.O.; Peter, S.; Adamu, M and David, G.T. 2015. Studies on the adsorption of heavy metals in a paint industry effluent using activated maize cob. Journal of Multidisciplinary Engineering Science and Technology (JMEST). 2, 39-46.
3. Sapci, Z. and Ustun, E.B. 2012. Interactions between contaminated aquatic environments and element uptake by Echinodorus amazinocus and Cryptocoryne undulata. Ecotoxicol. Environ. Saf. 76, 114–125.
4. Pathirana, C.; Ziyath, A.M.; Jinadasa, K.; Egodawatta, P.; Sarina, S.; Goonetilleke, A. 2019. Quantifying the influence of surface physico-chemical properties of biosorbents on heavy metal adsorption. Chemosphere, 234, 488–495
5. Sapci-Ayas, Z. 2021. Investigation of direct applicability of modified agricultural waste for contaminant removal from real textile wastewater. Water. 13, 1354.
6. Paraschiv, D.; Tudor, C. and Petrariu, R. 2015. The textile industry and sustainable development: A Holt–Winters Forecasting Investigation for the Eastern European Area. Sustainability. 7, 1280-1291
7. Hassaan, M. A. and El Nemr, A. 2017. Advanced oxidation processes for textile wastewater treatment. International Journal of Photochemistry and Photobiology. 2, 85-93.
8. Oloyede, A.M.; Ogunlaja, O. and Ogunlaja, A. 2014. Sub-chronic toxicity assessment of local textile ‘Adire and Kampala’ (Tie and Dye) effluents on mice (Mus musculus). Research Journal of Environmental Sciences. 8, 142-148.
9. Baloye, D. O.; and Palamuleni, L. G. 2016. Modelling a critical infrastructure-driven spatial database for proactive disaster management: A developing country context. Jamba (Potchefstroom, South Africa). 8, 220.
10. Jindo, K.; Mizumoto, H.; Sawada, Y.; Sanchez-Monedero, M. A. and Sonoki, T. 2014. Physical and chemical characterization of biochars derived from different agricultural residues. Bio-geosciences. 11, 6613-6621.
11. Fatokun, V.O.; Owofadeju, F. K.; Ewemoje, O.E. and Ewemoje, T.A. 2021. Batch Adsorption investigation of the use of Cordia milleni carbon for wastewater treatment. Journal of Applied Science and Environmental Management (JASEM). 25, 949-953.
12. Ijaola, O.O.; Ogedengbe, K. and Sangodoyin, A.Y. 2013. Kinetic study of water contaminants adsorption by bamboo granular activated and Non-activated carbon. International Journal of Engineering and Technology Innovation. 3, 289-298
13. Omotoso, O.A. and Sangodoyin, A.Y. 2013. Production and utilization of cassava peel activated carbon in treatment of effluent from cassava processing industry. Water Practice & Technology. 8, 215-224
14. Fatokun, V.O.; Owofadeju, F.K.; Ewemoje, O.E. and Ewemoje, T.A. 2021. Investigation of adsorbent characteristics of carbonized low-density woods in the treatment of textile effluent. FUOYE Journal of Engineering and Technology (FUOYEJET). 6, 1-4.
15. Ajayi-Banji, A.A.; Ewemoje, T.A. and Ajimo, A.A. 2015. Efficacy of locust beans husk char in heavy metal sequestration. Environ. Res. Eng. and Mgt. 71, 5-10.
16. de Caprariis, B.; Paolo De F.; Elisabetta P. and Marco S. 2018. Activated biochars used as adsorbents for dyes removal. Chemical Engineering Transactions. 64, 22-28