Basic Dye Removal with Sorption onto Low-Cost Natural Textile Fibers

Abstract

Over the last several years, the trend of researchers has been to use some very low-cost materials as adsorbents. For this purpose, some already commercially used bast fibers were selected as potential adsorbent materials to remove basic dye from synthetic effluents. The adsorption of basic yellow 37 dye was studied using three different bast fibers under the names of flax, ramie, and kenaf. Their morphological structure was examined using several techniques such as scanning electron microscopy (SEM), crystallinity, X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), as well as those characterizations being a useful tool to propose a mechanism of the whole adsorption process. The adsorption evaluation was achieved by studying at first the pH (12) and temperature effects (25–55 °C). Two isotherm models (Langmuir and Freundlich) were also applied to the experimental equilibrium data revealing the superiority of ramie fibers (327, 435, and 460 mg·g−1 (25 °C) for kenaf, flax, and ramie, respectively). The crucial adsorbent’s dosage was found to be 0.1 g per litre for all fibers, while the completed desorption study (eluant’s pH and reuse cycles) also confirmed the strong potential of these kinds of fibers as adsorbents. The latter may be attributed to the cellulosic content.

Potential of Moringa oleifera seeds and fuel wood ash as adsorbent of dye and organic matter in wastewater from batik producing enterprises

“…This could be among the reasons for the reduced removal efficiencies of DMOCSE in BPW at pH above 10 at which the solubility of the Moringa seed proteins decreases since high adsorption capacity is obtained at low pH (Yaseen and Schotz, 2019b). Analogous to this study, Kyzas et al (2018) also observed higher uptake (78 to 91%) of basic dye onto low-cost natural textile fibers at pH 12 with the large increase occurring between pH 6 and 8 signifying that some change in the nature of the process was occurring.…”

Isotherms, kinetic and thermodynamic studies of methylene blue adsorption on chitosan flakes derived from African giant snail shell

“…Equally, mercury-doped zinc (II) oxide nanorods (Saravanan et al, 2013a), ZnO/CuO nanocomposites (Saravanan et al, 2013b), CeO 2 , V 2 O 5 , CuO and nanocomposite of CeO 2 /V 2 O 5 and CeO 2 /Cu (Saravanan et al, 2013c) and zinc (II) oxide/silver nanocomposite (Saravanan et al, 2013d) have been applied for the adsorption of dyes. Also, adsorbents for the treatment of dye contaminated aqueous solution include Fe 3 O 4 nanoparticles (Ghaedi et al, 2015), zinc (II) oxide/silver/Mn 2 O 5 nanocomposite (Saravanan et al, 2015), carbonaceous material (Gupta et al, 2016), ZnO/CeO 2 nanoparticles (Saravanam et al, 2016), commercially used bast fibers under the names of flax, ramie and kenaf (Kyzas et al, 2018) and activated carbon coated with zinc oxide (Pourali et al, 2020). In particular, adsorbents that have been utilized for methylene blue adsorption from aqueous solution include jute fiber carbon (Senthilkumaar et al, 2005), unburned carbon (Wang et al, 2005), cedar sawdust and crushed brick (Hamdaoui, 2006), bamboo activated carbon (Hameed et al, 2007), garlic peel (Hameed and Ahmad, 2009), bentonite (Hong et al, 2009) and carbon nanotube (Yao et al, 2010).…”

Adsorption of Organic Constituents from Reverse Osmosis Concentrate in Coal Chemical Industry by Coking Coal

“…where q t is the adsorption amount at t time, (mg/g); C t is the liquid phase concentration at t time, (mg/L). Quasi-primary and quasi-secondary kinetics are commonly used to describe adsorption of real wastewater by adsorbents [17]. The quasi-first-order kinetics and the quasi-second-order kinetic model were used to fit the kinetic experimental data.…”