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 W.T. Tsai et al., Adsorption of acid dye onto activated carbons prepared from agricultural waste bagasse by ZnCl2 activation, Journal of Chemosphere. 45(1) (2001) 51–58.DOI: https://doi.org/10.1016/s0045-6535(01)00016-9
 K. Santhy, P. Selvapathy, Removal of reactive dyes from wastewater by adsorption on coir pith activated carbon, Bioresource Technology. 97(11) (2006) 1329–1336.DOI: https://doi.org/10.1016/j.biortech.2005.05.016
 A. Reife, Dyes, environmental chemistry, in: Kirk-Othmer (Ed. ), Encyclopedia of Chemical Technology, John Wiley & Sons, Washington, (1993).
 U. Pagga, D. Brown, The degradation of dyestuffs: Part II. Behaviour of dyestuffs in aerobic biodegradation test, Chemosphere. 15(4) (1986) 479–491.DOI: https://doi.org/10.1016/0045-6535(86)90542-4
 M.F. Boeniger, Carcinogenity of azo dyes derived from benzidine, Department of Health and Human Services (NIOSH), Pub. No. 80-119 Cincinnati, OH, USA, (1980).
 O. Dursun, D. Gulbeyi, O. Ahmet, Methylene blue adsorption from aqueous solution by dehydrated peanut hull, Journal of Hazardous Materials. 144(1) (2007) 171–179.DOI: https://doi.org/10.1016/j.jhazmat.2006.09.092
 A.S. Franca, L.S. Oliveira, M.E. Ferreira, Kinetics and equilibrium studies of methylene blue adsorption by spent coffee ground, Desalination. 249(1) (2009) 267–272.DOI: https://doi.org/10.1016/j.desal.2008.11.017
 Md. Tamez Uddin et al., Adsorptive removal of methylene blue by tea waste, Journal of Hazardous Materials. 164(1) (2009) 53–60.DOI: https://doi.org/10.1016/j.jhazmat.2008.07.131
 A. Mokhtar et al., Removal of dyes from colored textile wastewater by orange peel adsorbent: Equilibrium and kinetic studies, Journal of Colloids and Interfacial Science. 288(2) (2005) 371–376.DOI: https://doi.org/10.1016/j.jcis.2005.03.020
 A. Ola et al., Use of rice husk for adsorption of direct dyes from aqueous solution: A case study of direct F. Scarlet, Egyptian J. Aquatic Res. 31(1) (2005) 1–11.
 L.S. Tan, K. Jain, C.A. Rozaini, Adsorption of textile dye from aqueous solution on pretreated mangrove bark, an agricultural waste: Equilibrium and kinetic studies, J. App. Sci. Environ. Sani. 5(3) (2010) 266–276.
 S.N. Ijioma et al., Antinociceptive property of Costus afer ker stem juice and ethanol leaf extract in albino rats, Comprehensive Journal of Medical Sciences. 2(2) (2014) 14–19.
 A.N. Ezejiofor, C.N. Orish, E.O. Orish, Effect of aqueous leaves extract of Costus afer ker Gawl (Zingiberaceae) on the liver and kidney of male albino Wister rat, Ancient Science of Life. 33(1) (2013) 4–9.DOI: https://doi.org/10.4103/0257-7941.134554
 B.H. Hameed, Removal of cationic dye from aqueous solution using jackfruit peel as non-conventional low cost adsorbents, Journal of Hazardous Materials. 162(1) (2009) 344–350.DOI: https://doi.org/10.1016/j.jhazmat.2008.05.045
 B.H. Hameed, A.A. Ahmad, Batch adsorption of methylene blue from aqueous solution by garlic peel, an agricultural waste biomass, Journal of Hazardous Materials. 164(2) (2009) 870–875.DOI: https://doi.org/10.1016/j.jhazmat.2008.08.084
 B.H. Hameed, R.R. Krishni, S. A. Sata, A novel agricultural waste adsorbent for the removal of cationic dye from aqueous solutions, Journal of Hazardous Materials. 162(1) (2009) 305–311.DOI: https://doi.org/10.1016/j.jhazmat.2008.05.036
 B.H. Hameed, M.I. El-Khaiary, Sorption kinetics and isotherm studies of a cationic dye using agricultural waste: broad bean peels, Journal of Hazardous Materials. 154(1) (2008) 639–648.DOI: https://doi.org/10.1016/j.jhazmat.2007.10.081
 B.H. Hameed, Evaluation of papaya seeds as a novel nonconventional low-cost adsorbent for removal of methylene blue, Journal of Hazardous Materials. 162(2) (2009) 939–944.DOI: https://doi.org/10.1016/j.jhazmat.2008.05.120
 V. Ponnusami, V. Gunasekar, S.N. Srivastava, Kinetics of methylene blue removal from aqueous solution using gulmohar delonix regia plant leaf powder: Multivariate regression analysis, Journal of Hazardous Materials. 169(1) (2009) 119–127.DOI: https://doi.org/10.1016/j.jhazmat.2009.03.066
 T. Santhi, S. Manonmani, Removal of Methylene blue from aqueous solution by bioadsorption onto Ricinus communis epicarp activated carbon, Chemical Engineering Research Bulletin. 13(1) (2009) 1–5.DOI: https://doi.org/10.3329/cerb.v13i1.2518
 S.A. Dhahir et al., Adsorption of malachite green dye from aqueous solution onto Iraqi raw Al-Hussainiyat clay, Eur. Chem. Bull. 2(11) (2013) 866–872.
 M. Shanthi, V. Kuzhalosai, Photocatalytic degradation of an azo dye, Acid Red 27, in aqueous solution using nano ZnO, Indian Journal of Chemistry. 51A (2011) 428–434.
 M.H. Elhussien, Y.M. Isa, Langmuir, Freundlich adsorption isotherms and kinetics for the removal of methylene blue dye from aqueous solution using activated carbon derived from pods of Acacia nilotica var astringens (Sunt tree) by chemical activation with ZnCl2, Chemical and Process Engineering Research. 38 (2015).
 S.S. Ashour, Kinetic and equilibrium adsorption of methylene blue and remazol dyes onto steam-activated carbons developed from date pits, Journal of Saudi Chemical Society. 14(1) (2009) 47–53.DOI: https://doi.org/10.1016/j.jscs.2009.12.008
 M.L. Gary et al., Introduction to Spectroscopy: Infrared spectroscopy, 4th ed., Bellingham, Brooks/Cole, Washington, 2010, p.15–87.
 N. Sharma, B.K. Nnadi, Utilization of sugarcane baggase, an agricultural waste to remove malachite green dye from aqueous solution, J. Mater. Environ. Sci. 4(6) (2013) 1052–1065.
 P.S. Kumar et al., Adsorption of methylene blue dye from aqueous solution by agricultural waste: Equilibrium, thermodynamics, kinetics, mechanism and process design, Colloid Journal. 3 (2011) 651–661.DOI: https://doi.org/10.1134/s1061933x11050061
 A. El–Maghraby, H.A. El–Deeb, Removal of a basic dye from aqueous solution by adsorption using rice hulls, Global NEST. J. 13(1) (2011) 90–98.
 C.K. Enenebeaku et al., Equilibrium and thermodynamic studies for adsorption of methylene blue dye onto raw cassava peel (RCP), Journal of Emerging Trends in Engineering and Applied Sciences. 7(3) (2016) 133–142.
 R. Han et al., Biosorption of methylene blue from aqueous solution by fallen phoenix tree leaves, Journal of Hazardous Materials. 141(1) (2007) 156–162.DOI: https://doi.org/10.1016/j.jhazmat.2006.06.107
 G. Annadurai, R.S. Juang, D.J. Lee, Use of cellulose based waste for adsorption of dyes from aqueous solutions, Journal of Hazardous Materials. 92(3) (2002) 263–274.DOI: https://doi.org/10.1016/s0304-3894(02)00017-1
 S. Sharma, A. Hasan, N. Kumar, L. Pandey, "Removal of methylene blue dye from aqueous solution using immobilized Agrobacterium fabrum biomass along with iron oxide nanoparticles as biosorbent", Environmental Science and Pollution Research, 2018DOI: https://doi.org/10.1007/s11356-018-2280-z
 A. Adeogun, J. Akande, M. Idowu, S. Kareem, "Magnetic tuned sorghum husk biosorbent for effective removal of cationic dyes from aqueous solution: isotherm, kinetics, thermodynamics and optimization studies", Applied Water Science, Vol. 9, 2019DOI: https://doi.org/10.1007/s13201-019-1037-2
 C. Matias, P. Vilela, V. Becegato, A. Paulino, "Adsorption and Removal of Methylene Blue from Aqueous Solution Using Sterile Bract of Araucaria angustifolia as Novel Natural Adsorbent", International Journal of Environmental Research, 2019DOI: https://doi.org/10.1007/s41742-019-00231-7
 P. Thabede, N. Shooto, E. Naidoo, "Removal of methylene blue dye and lead ions from aqueous solution using activated carbon from black cumin seeds", South African Journal of Chemical Engineering, 2020DOI: https://doi.org/10.1016/j.sajce.2020.04.002
 F. Titchou, R. Akbour, A. Assabbane, M. Hamdani, "Removal of cationic dye from aqueous solution using Moroccan pozzolana as adsorbent: Isotherms, kinetic studies, and application on real textile wastewater treatment", Groundwater for Sustainable Development, p. 100405, 2020DOI: https://doi.org/10.1016/j.gsd.2020.100405
 N. Okorocha, C. Omaliko, C. Osuagwu, M. Chijioke-Okere, C. Enenebeaku, "Utilization of Agro-Waste in the Elimination of Dyes from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Studies", International Letters of Chemistry, Physics and Astronomy, Vol. 86, p. 11, 2021DOI: https://doi.org/10.18052/www.scipress.com/ILCPA.86.11
 E. Marzi Khosrowshahi, N. Farhami, B. Jannat, S. Farrokhzadeh, H. Razmi, "Walnut bloom powder as a waste-based sorbent for cationic dyes removal: equilibrium, kinetic, and thermodynamic studies", Canadian Journal of Chemistry, p. 1, 2021DOI: https://doi.org/10.1139/cjc-2021-0045
 E. Marzi Khosrowshahi, N. Farhami, B. Jannat, S. Farrokhzadeh, H. Razmi, "Walnut bloom powder as a waste-based sorbent for cationic dyes removal: equilibrium, kinetic, and thermodynamic studies", Canadian Journal of Chemistry, Vol. 99, p. 956, 2021DOI: https://doi.org/10.1139/cjc-2021-0045