Ö. Şahin, M. Kaya, C. Saka, Plasma-surface modification on bentonite clay to improve the performance of adsorption of methylene blue, Appl. Clay Sci. 116 (2015) 46-53.
 A. Khodabandehloo, A. Rahbar-Kelishami, H. Shayesteh, Methylene blue removal using Salix babylonica (Weeping willow) leaves powder as a low-cost biosorbent in batch mode: Kinetic, equilibrium, and thermodynamic studies, J. Mol. Liq. 244 (2017) 540-548.
 G. Çöle, M.K. Gök, G. Güçlü, Removal of basic dye from aqueous solutions using a novel nanocomposite hydrogel: N-vinyl 2-pyrrolidone/itaconic acid/organo clay, Water Air Soil Poll. 224 (2013) 1760.
 M. Peydayesh, A. Rahbar-Kelishami, Adsorption of methylene blue onto Platanus orientalis leaf powder: Kinetic, equilibrium and thermodynamic studies, J. Ind. Eng. Chem. 21 (2015) 1014-1019.
 F. Hemmati, R. Norouzbeigi, F. Sarbisheh, H. Shayesteh, Malachite green removal using modified sphagnum peat moss as a low-cost biosorbent: Kinetic, equilibrium and thermodynamic studies, J. Taiwan Inst. Chem. E. 58 (2016) 482-489.
 H. Shayesteh, A. Rahbar-Kelishami, R. Norouzbeigi, Adsorption of malachite green and crystal violet cationic dyes from aqueous solution using pumice stone as a low-cost adsorbent: kinetic, equilibrium, and thermodynamic studies, Desalin. Water Treat. 57 (2016) 12822-12831.
 H.R. Mahdavi, M. Arzani, M. Isanejad, T. Mohammadi, Effect of hydrophobic and hydrophilic nanoparticles loaded in D2EHPA/M2EHPA - PTFE supported liquid membrane for simultaneous cationic dyes pertraction, J. Environ. Manage. 213 (2018) 288-296.
 T. Aysu, M.M. Küçük, Removal of crystal violet and methylene blue from aqueous solutions by activated carbon prepared from Ferula orientalis, Int. J. Environ. Sci. Technol. 12 (2015) 2273-2284.
 C. Shi, F. Tao, Y. Cui, Evaluation of nitriloacetic acid modified cellulose film on adsorption of methylene blue, Int. J. Biol. Macromol. 114 (2018) 400-407.
 M. Cheng, G. Zeng, D. Huang, C. Lai, Z. Wei, N. Li, P. Xu, C. Zhang, Y. Zhu, X. He, Combined biological removal of methylene blue from aqueous solutions using rice straw and Phanerochaete chrysosporium, Appl. Microbiol. Biot. 99 (2015) 5247-5256.
 R. Zhao, Y. Li, B. Sun, S. Chao, X. Li, C. Wang, G. Zhu, Highly flexible magnesium silicate nanofibrous membranes for effective removal of methylene blue from aqueous solution, Chem. Eng. J. 359 (2019) 1603-1616.
 N. Wang, J. Chen, J. Wang, J. Feng, W. Yan, Removal of methylene blue by Polyaniline/TiO2 hydrate: Adsorption kinetic, isotherm and mechanism studies, Powder Technol. 347 (2019) 93-102.
 E. Lacasa, P. Cañizares, F.C. Walsh, M.A. Rodrigo, C. Ponce-de-León, Removal of methylene blue from aqueous solutions using an Fe2+ catalyst and in-situ H2O2 generated at gas diffusion cathodes, Electrochim. Acta. 308 (2019) 45-53.
 D. Morshedi, Z. Mohammadi, M.M. Akbar Boojar, F. Aliakbari, Using protein nanofibrils to remove azo dyes from aqueous solution by the coagulation process, Colloid. Surface. B, 112 (2013) 245-254.
 Z. Yang, H. Yang, Z. Jiang, T. Cai, H. Li, H. Li, A. Li, R. Cheng, Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide, J. Hazard. Mater. 254-255 (2013) 36-45.
 J. Xun, T. Lou, J. Xing, W. Zhang, Q. Xu, J. Peng, X. Wang, Synthesis of a starch-acrylic acid-chitosan copolymer as flocculant for dye removal, J. Appl. Polym. Sci. 136 (2019) 47437.
 H. Cherifi, B. Fatiha, H. Salah, Kinetic studies on the adsorption of methylene blue onto vegetal fiber activated carbons, Appl. Surf. Sci. 282 (2013) 52-59.
 K. Rushforth, Trees of Britain and Europe, 1st Ed., HarperCollins Pub. Ltd., 1999.
 L.R. Batdorf, Boxwood: An illustrated encyclopedia, American Boxwood Society, 2004.
 S. Mohebali, D. Bastani, H. Shayesteh, Methylene blue removal using modified celery (Apium graveolens) as a low-cost biosorbent in batch mode: Kinetic, equilibrium, and thermodynamic studies, J. Mol. Struct. 1173 (2018) 541-551.
 S. Rangabhashiyam, S. Lata, P. Balasubramanian, Biosorption characteristics of methylene blue and malachite green from simulated wastewater onto Carica papaya wood biosorbent, Surface. Interfac. 10 (2018) 197-215.
 L. Ma, C. Jiang, Z. Lin, Z. Zou, Microwave-hydrothermal treated grape peel as an efficient biosorbent for methylene blue removal, Int. J. Environ. Res. Public Health. 15 (2018) 239.
 Y.A.R. Lebron, V.R. Moreira, L.V.S. Santos, R.S. Jacob, Remediation of methylene blue from aqueous solution by Chlorella pyrenoidosa and Spirulina maxima biosorption: Equilibrium, kinetics, thermodynamics and optimization studies, J. Environ. Chem. Eng. 6 (2018) 6680-6690.
 J.-Z. Guo, B. Li, L. Liu, K. Lv, Removal of methylene blue from aqueous solutions by chemically modified bamboo, Chemosphere, 111 (2014) 225-231.
 J. Valnet, Phytothérapie, traitement des maladies par les plantes, 6e Ed. Maloine, Paris, 1992.
 F. Loru, D. Duval, A. Aumelas, F. Akeb, D. Guédon, R. Guedj, Four steroidal alkaloids from the leaves of Buxus sempervirens, Phytochemistry, 54 (2000) 951-957.
 C. Fourneau, R. Hocquemiller, D. Guédon, A. Cavé, Spirofornabuxine, a novel type of Buxus alkaloid, Tetrahedron Lett. 38 (1997) 2965-2968.
 X. Colom, F. Carrillo, F. Nogués, P. Garriga, Structural analysis of photodegraded wood by means of FTIR spectroscopy, Polym. Degrad. Stab. 80 (2003) 543-549.
 M. Kosmulski, Surface charging and points of zero charge, CRC press, 2009.
 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, J. Hazard. Mater. 169 (2009) 119-127.
 H. Azarpira, Y. Mahdavi, D. Balarak, Removal of Cd (II) by adsorption on agricultural waste biomass, Der Pharma Chem. 8 (2016) 61-67.
 H. Azarpira, Y. Mahdavi, O. Khaleghi, D. Balarak, Thermodynamic studies on the removal of metronidazole antibiotic by multi-walled carbon nanotubes, Der Pharm. Lett. 8 (2016) 107-113.
 H. Shayesteh, A. Rahbar-Kelishami, R. Norouzbeigi, Evaluation of natural and cationic surfactant modified pumice for congo red removal in batch mode: Kinetic, equilibrium, and thermodynamic studies, J. Mol. Liq. 221 (2016) 1-11.
 E. Bazrafshan, A.H. Mahvi, M. Havangi, A.H. Panahi, D. Balarak, Adsorptive removal of nitrate from aqueous environments by cupric oxide nanoparticles: kinetics, thermodynamics and isotherm studies, Fresen. Environ. Bull. 27 (2018) 5669-5678.
 M.U. Dural, L. Cavas, S.K. Papageorgiou, F.K. Katsaros, Methylene blue adsorption on activated carbon prepared from Posidonia oceanica (L.) dead leaves: Kinetics and equilibrium studies, Chem. Eng. J. 168 (2011) 77-85.
 S.K. Milonjić, A consideration of the correct calculation of thermodynamic parameters of adsorption, J. Serb. Chem. Soc. 72 (2007) 1363-1367.
 C.-H. Weng, Y.-T. Lin, T.-W. Tzeng, Removal of methylene blue from aqueous solution by adsorption onto pineapple leaf powder, J. Hazard. Mater. 170 (2009) 417-424.
 L.Y. Mwaikambo, M.P. Ansell, Chemical modification of hemp, sisal, jute, and kapok fibers by alkalization, J. Appl. Polym. Sci. 84 (2002) 2222-2234.
 P.K. Malik, Use of activated carbons prepared from sawdust and rice-husk for adsorption of acid dyes: a case study of Acid Yellow 36, Dyes Pigments, 56 (2003) 239-249.
 Y. Liu, Y. Kang, B. Mu, A. Wang, Attapulgite/bentonite interactions for methylene blue adsorption characteristics from aqueous solution, Chem. Eng. J. 237 (2014) 403-410.
 M. Ghaedi, M.D. Ghazanfarkhani, S. Khodadoust, N. Sohrabi, M. Oftade, Acceleration of methylene blue adsorption onto activated carbon prepared from dross licorice by ultrasonic: Equilibrium, kinetic and thermodynamic studies, J. Ind. Eng. Chem. 20 (2014) 2548-2560.
 A. Mittal, D. Kaur, A. Malviya, J. Mittal, V.K. Gupta, Adsorption studies on the removal of coloring agent phenol red from wastewater using waste materials as adsorbents, J. Colloid Interf. Sci. 337 (2009) 345-354.
 A. Albert, E.P. Serjeant, Ionization constants of acids and bases: a laboratory manual, 3rd Ed., Chapman and Hall, NY, 1984.
 P. Sharma, R. Kaur, C. Baskar, W.-J. Chung, Removal of methylene blue from aqueous waste using rice husk and rice husk ash, Desalination, 259 (2010) 249-257.
 M. Peydayesh, A. Rahbar-Kelishami, Adsorption of methylene blue onto a leaf powder: kinetic, equilibrium and thermodynamic studies, J. Ind. Eng. Chem. 21 (2015) 1014-1019.
 B.H. Hameed, M.I. El-Khaiary, Sorption kinetics and isotherm studies of a cationic dye using agricultural waste: broad bean peels, J. Hazard. Mater. 154 (2008) 639-648.
 B.H. Hameed, Removal of cationic dye from aqueous solution using jackfruit peel as non-conventional low-cost adsorbent, J. Hazard. Mater. 162 (2009) 344-350.
 A.E. Ofomaja, Sorption dynamics and isotherm studies of methylene blue uptake on to palm kernel fibre, Chem. Eng. J. 126 (2007) 35-43.
 B.H. Hameed, D.K. Mahmoud, A.L. Ahmad, Sorption equilibrium and kinetics of basic dye from aqueous solution using banana stalk waste, J. Hazard. Mater. 158 (2008) 499-506.
 L.S. Oliveira, A.S. Franca, T.M. Alves, S.D.F. Rocha, Evaluation of untreated coffee husks as potential biosorbents for treatment of dye contaminated waters, J. Hazard. Mater. 155 (2008) 507-512.
 D. Özer, G. Dursun, A. Özer, Methylene blue adsorption from aqueous solution by dehydrated peanut hull, J. Hazard. Mater. 144 (2007) 171-179.
 R. Gong, Y. Jin, J. Chen, Y. Hu, J. Sun, Removal of basic dyes from aqueous solution by sorption on phosphoric acid modified rice straw, Dye. Pigment. 73 (2007) 332-337.