Turbidity Removal Efficiency of Tannin Based Flocculants Derived from Different Agricultural Waste
Main Article Content
Abstract
Tannin-based flocculants have been investigated, produced, and commercialized as a promising product in water supply and wastewater treatment. This study compared turbidity removal efficiency of tannin-based flocculants produced from different agricultural waste. Tannin was extracted using ultrasonic method (ethanol 50%, 2 h, 500 kHz) and modified according to Mannich reaction using HCHO and NH4Cl. The coagulation and flocculation efficiencies were determined using Jar-tests on artificial wastewater with initial turbidity of 200 NTU. The results showed that at pH 7 and alum dosage of 5 ppm, turbidity removal efficiency of flocculants derived from longan pericarp, mimosa bark, green tea waste, and green banana peel were 93%, 92.7%, 92%, and 89.8%, respectively; corresponding to flocculant dosages of 10 ppm, 12 ppm, 8 ppm and 8 ppm. Production efficiency for green tea waste (9.4%), mimosa bark (7.1%), longan pericarp (4.6%) were much higher than that for green banana peel (0.5%). Based on the turbidity removal and production efficiencies as well as the optimal dosages of tannin-based flocculants, green tea waste was found to be the most potential material of all four agricultural waste to produce tannin-based flocculants.
References
[2] G. Vijayaraghavan, T. Sivakumar, A. V. Kumar, Application of Plant-based Coagulants for Wastewater Treatment, Int. J. Adv. Eng. Res. Stud, Vol. 1, No. 1, 2011, pp. 88-92, https://doi.org/10.1016/B978-0-12-822933-0.00012-7.
[3] B. Bolto, J. Gregory, Organic Polyelectrolytes in Water Treatment, Water. Res., Vol. 41, 2007,
pp. 2301-2324, https://doi.org/10.1016/j.watres.2007.03.012.
[4] J. S. Martín, M. G. Velasco, J. B. Heredia, Acacia Mearnsii De Wild Tannin-Based Flocculant in Surface Water Treatment, J. Wood. Chem. Technol., Vol. 29, 2009, pp. 119-135, https://doi.org/10.1080/02773810902796146.
[5] J. S. Martín, J. B. Heredia, M. A. D. Acedo, Optimum Coagulant from Acacia Mearnsii De Wild for Wastewater Treatment, Chem. Eng. Technol., Vol. 12, 2011, pp. 2069-2076, https://doi.org/10.1002/ceat.201100330.
[6] J. B. Heredia, J. S. Martín, M. A. D. Acedo, Optimization of the Synthesis of a New Coagulant from A Tannin Extract, J. Hazard Mater., Vol. 186, 2011, pp. 1704-1712, https://doi.org/10.1016/j.jhazmat.2010.12.075.
[7] K. Sharma, V. Kumar, J. Kaur, A. Kumar, Health Effects, Sources, Utilization and Safety of Tannins: A Critical Review, Toxin Rev., Vol. 40, No. 3, 2019, pp. 1-13, http://doi.org/10.1080/15569543.2019.1662813.
[8] M. Kondo, A. Jayanegara, Y. Uyeno, H. Matsui, Variation of Tannin Contents in Selected Agro-Industrial By- products and Their Biological Activity in Precipitating Protein, Adv. Anim. Vet., Vol. 4, No. 2, 2016, pp. 66-70, http://dx.doi.org/10.14737/journal.aavs/2016/4.2.66.70.
[9] H. T. T. Nguyen, K. N. Duong, The Effect of Mimosa Pigra L. in Fodder on Growth of Goat, CTU J. Sci., Vol. 48(b), 2017, pp. 58-65, http://doi.org/10.22144/ctu.jvn.2017.617 (in Vietnamese).
[10] X. Wang, K. L. Xu, H. L. Feng, Condensed Tannins from Longan Bark as Inhibitor of Tyrosinase: Structure, Activity, and Mechanism, J. Agric. Food Chem., Vol. 66, No. 4, 2018, pp. 908-917,
https://doi.org/10.1021/acs.jafc.7b05481.
[11] H. A. M. Bacelo, S. C. R. Santos, C. M. S. Botelho, Tannin-based Biosorbents for Environmental Applications – A Review, Chem. Eng. J., Vol. 303, 2016, pp. 575-587, https://doi.org/10.1016/j.cej.2016.06.044.
[12] T. H. Terrill, A. M. Rowan, G. B. Douglasb, T. N. Barry, Determination of Extractable and Bound Condensed Tannin Concentrations in Forage Plants, Protein Concentrate Meals and Cereal Grains, Sci. Food. Apic., Vol. 58, 1992, pp. 321-329, https://doi.org/10.1002/jsfa.2740580306.
[13] W. Kyamuhangire, T. Krekling, E. Reed, R. Pehrson, The Microstructure and Tannin Content of Banana Fruit and Their Likely Influence on Juice Extraction, J. Sci. Food. Agr., Vol. 86, 2006, pp. 1908-1915, https://doi.org/10.1002/jsfa.2553.
[14] R. A. A. Juboori, V. Aravinthan, T. Yusaf, L. Bowtell, Assessing the Application and Downstream Effects of Pulsed Mode Ultrasound as a Pre-Treatment for Alum Coagulation, Ultrason Sonochem, Vol. 31, 2016, pp. 7-19, https://doi.org/10.1016/j.ultsonch.2015.11.028.
[15] S. M. Asharuddin, N. Othman, Q. A. Maqtari, W. A. H. A. Towayti, S. N. H. Arifin, The Assessment of Coagulation and Flocculation Performance and Interpretation of Mechanistic Behavior of Suspended Particles Aggregation by Alum Assisted by Tapioca Peel Starch, Environ. Technol. Inno., Vol. 32, 2023, pp. e103414, https://doi.org/10.1016/j.eti.2023.103414.
[16] W. Subramonian, T. Y. Wu, S. P. Chai, An Application of Response Surface Methodology for Optimizing Coagulation Process of Raw Industrial Effluent Using Cassia Obtusifolia Seed Gum Together with Alum, Ind. Crop. Prod., Vol. 70, 2015, pp. 107-115, https://doi.org/10.1016/j.indcrop.2015.02.026.
[17] N. Graham, F. Gang, G. Fowlera, M. Watts, Characterisation and Coagulation Performance of a Tannin-based Cationic Polymer: A Preliminary Assessment, Colloids Surf A: Physicochem, Eng. Aspectsl, Vol. 327, 2008, pp. 9-16, https://doi.org/10.1016/j.colsurfa.2008.05.045.
[18] A. L. Ahmad, S. S. Wong, T. T. Teng, A. Zuhairi, Improvement of Alum and Pacl Coagulation by Polyacrylamides (PAMs) for the Treatment of Pulp and Paper Mill Wastewater, J. Chem. Eng, Vol. 137, No. 3, 2008, pp. 510-537, https://doi.org/10.1016/j.cej.2007.03.088.