Adsorption isotherm and kinetic study of Direct Orange 102 dyes on TNJ activated carbon P. Srinivasan a,⇑ , A. John Bosco b,⇑ , R. Kalaivizhi b , J. Arockia Selvi b , P. Sivakumar c a Centre for Environmental Research, Department of Chemistry, Kongu Engineering College, Erode 638 060, India b Department of Chemistry, SRM Institute of Science and Technology, Faculty of Engineering and Technology, Kattankulathur 603 203, India c Department of Chemistry, A.A. Govt. Arts College, Namakkal 637 002, India article info Article history: Available online xxxx Keywords: Biomimicry Structural element Humerus bone Tie member Stress analysis abstract The present research shows an adsorbent prepared from an agricultural waste was studied for its effi- ciency in removal color. The process parameters were analyzed like agitation time, initial dye concentra- tion, adsorbent dose, pH and temperature. The experimental data analysed by the Langmuir and Freundlich models of adsorption. The adsorption isotherm data were fitted well to Langmuir isotherm. The Kinetic data obtained at different concentrations were analysed using a pseudo first order and second order kinetic model. The experimental data fitted very well the pseudo second-order kinetic model. This study proves that the novel activated carbon is a promising adsorbent for remediation of textile effluent in a sustainable manner. Ó 2018 Elsevier Ltd. All rights reserved. Peer-review under responsibility of the scientific committee of the 3rd International Conference on Recent Advances in Material Chemistry, ICRAMC 2019. 1. Introduction Bio mimicry is the discipline of observing nature and applying nature’s lessons to human design and innovation [1]. Nature is the world’s largest research and development laboratory [2]. The main objective of this project is to model a tie member similar to human hand bone (humerus) and to evaluate its structural effi- ciency under uni-axial loading [1]. In this paper FEA is used to find the stress pattern of human hand bone and similar tie member is derived. The bone between shoulder and elbow is humerus bone. This humerus bone is largest bone of human hand arm [3]. For analysis we have considered the simple geometry of tie member. There are three levels of bio mimicry namely, organism level, behaviour level and ecosystem level [4]. In the before their discharge in to the environment, not only for aesthetic reasons. This is impor- tant to regions where water resources might be scarce and sensitive. Disperse dyes have been shown to have high partition coeffi- cient and solubility, suggesting significant potential for bio- concentration [4]. The methods for colour removal from industrial waste water include biological treatment, coagulation, floatation, adsorption, oxidation and hyper filtration. Activated carbon method is the most popular physico-chemical treatment for the removal of dissolved organics from waste water. Activated carbons are the most important commercial adsorbents. Their high surface area with their chemical structure allows them to be used in vari- ety of industrial applications [5,6]. The advantage of using acti- vated carbon are, less land area as compared to biological treatment, flexibility in design and operation and superior removal of organic contaminants. Besides the technology of activated car- bons are not well developed in recent times, the high cost of pro- duction coupled with problems associated with regeneration, has necessitated the search for alternate adsorbents [7–10]. 2. Experimental 2.1. Materials and methods Plant wastes used for the present study were collected from the rural areas in and around Erode and Salem districts, Tamil Nadu, India. The dried material is used for the preparation of activated carbon using physical and chemical activation methods. 2.2. Preparation of TNJAC Thevetia neriifolia Juss wood is used as precursor for the prepa- ration of activated carbon. The wood is first washed to remove the https://doi.org/10.1016/j.matpr.2020.02.198 2214-7853/Ó 2018 Elsevier Ltd. All rights reserved. Peer-review under responsibility of the scientific committee of the 3rd International Conference on Recent Advances in Material Chemistry, ICRAMC 2019. ⇑ Corresponding authors. E-mail addresses: sricsri@gmail.com (P. Srinivasan), sambosco@gmail.com (A. John Bosco). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: P. Srinivasan, A. John Bosco, R. Kalaivizhi et al., Adsorption isotherm and kinetic study of Direct Orange 102 dyes on TNJ activated carbon, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2020.02.198