M. A. Hassaan, A. El Nemr, Health and Environmental Impacts of Dyes: Mini Review, American Journal of Environmental Science and Engineering., 1 (2017) 64-67
 P. S. Kumar, S. Ramalingam, K. Sathishkumar, Removal of methylene blue dye from aqueous solution by activated carbon prepared from cashew nut shell as a new low-cost adsorbent, Korean J. Chem. Eng., 28 (2011)149-155.
 V. Vadivelan, K.V. Kumar. Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk, J. Colloid Interface Sci., 286 (2005) 90-100.
 B. H. Hameed, A. T. M. Din, A. L. Ahmad, Adsorption of methylene blue onto bamboo-based activated carbon: kinetics and equilibrium studies, J. Hazard. Mater., 141 (2007) 819–825.
 S. Dhananasekaran
, R. Palanivel
, S. Pappu
, Adsorption of Methylene Blue, Bromophenol Blue, and Coomassie Brilliant Blue by α-chitin nanoparticles, J. Adv. Res.,
7 (2016) 113–124.
 R. Subramaniam, S. Ponnusamy, Novel adsorbent from agricultural waste (cashew NUT shell) for methylene blue dye removal: Optimization by response surface methodology, Water Resources and Industry., 11, 64-70 (2015).
 M.A. Khan, M.K. Uddin, R. Bushra, Synthesis and characterization of polyaniline Zr(IV) molybdophosphate for the adsorption of phenol from aqueous solution, Reac Kinet Mech Cat., 113 (2014) 499-517
 R. Ali Khan, S. Ikram, M. Kashif Uddin, Removal of Cr(VI) from aqueous solution on seeds of Artimisia absinthium (novel plant material), Desalination and Water Treatment., 54 (2015) 3358-3371.
 M. Kashif Uddin. A review on the adsorption of heavy metals by clay minerals, with special focus on the past decade, Chemical Engineering Journal., 308 (2017) 438–462.
 Y. D. Sintayehu, L. T. Lencha, Adsorption and Kinetic Optimization Study of Acetic Acid from Aqueous Solutions Using Activated Carbon Developed from Vernonia amygdalinaWood, American Journal of Physical Chemistry.5 (2016) 128-132.
 R. Sanghi, B. Bhattacharya Review on decolorization of aqueous dye solutions by low cost adsorbents, Color Technol, 118 (2002) 256-269.
 V. K. Garg, M. Amita, R. Kumar, R. Gupta, Basic dye (methylene blue) removal from simulated wastewater by adsorption using Indian rosewood sawdust: a timber industry waste. Dyes Pigments, 63 (2004) 243-250.
 D. Mohan, A. Sarswat, Y. Sik Ok, C. U. Pittman, Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent – A critical review, Bioresource Technology., 160 (2014) 91–202.
 D. Bergna, T. Varila, H. Romar, U. Lassi, Comparison of the Properties of Activated Carbons Produced in One-Stage and Two-Stage Processes, C, 4 (2018) 41-51.
 Rahman, M., Amin, S. M., & Alam, A. M. Removal of Methylene Blue from Waste Water Using Activated Carbon Prepared from Rice Husk, Dhaka University Journal of Science.,60 (2012) 185-189.
 S. Ghanbarnezhad, L. Sharifi , S. H. Mirhosseini, V. Khani, S. H. Zare, The Influence of Bentonite on the Removal of Methyl Violet Dye, International Journal of Advanced Science and Technology., 70 (2014) 47-54.
 M. A. Rahman, T. Ahmed, I. N. Salehin, M. D. Hossain, Color removal from textile wastewater using date seed activated carbon, Bangladesh J. Sci. Ind. Res., 52 (2017)31-42.
 Y. Zaker, M. A. Hossain, Effect of Various Factors on the Adsorption of Methylene Blue on Silt Fractionated from Bijoypur Soil, Bangladesh. Int. Res. J. Environment Sci., 2 (2013) 1-7.
 I. Langmuir, The constitution and fundamental properties of solids and liquids, J. Am. Chem. Soc., 38 (1916) 2221-2295.
 T. W. Weber, R. K. Chakkravorti, Pore and solid diffusion models for fixedbed adsorbers, AIChE J., 20 (1974)228.
 K.Y. Foo, Preparation, characterization and evaluation of adsorptive properties of orange peel based activated carbon via microwave induced K2CO3 activation. Bioresour. Technol., 104 (2012) 679-686.
 P. K. Malik, Use of activated carbons prepared from sawdust and rice-husk for sorption of acid dyes: a case study of acid yellow 36, Dyes Pigm., 56 (2003) 239-249
 S. Veli, B. Alyüz, Adsorption of copper and zinc from aqueous solutions by using natural clay. Journal of Hazardous Materials., 149 (2007) 226–233.
 Y. V. S. Sai Krishna, G. Sandhya, R. Ravichandra Babu, Removal of heavy metals Pb(ii), Cd(ii) and Cu(ii) from waste waters using synthesized chromium doped nickel oxide nano particles. Bull. Chem. Soc. Ethiop., 32 (2018) 225-238.
 B. Zhang, F. Li, T. Wu, D. Sun, Y. Li, Adsorption of p-nitrophenol from aqueous solutions using nanographite oxide. Colloids Surf A, Physicochem Eng Asp., 464 (2015) 78–88.
 L. Andrew, K.Y. Hsieh, Copper-based metal organic framework (MOF), HKUST-1, as an efcient adsorbent to remove p-nitrophenol from water, J Taiwan Inst Chem Eng., 50 (2015) 223–228.