Synthesis and characterization of arginine-doped heliotrope leaves with high clean-up capacity for crystal violet dye from aqueous media

Brini, Lahoucine
Hsini, Abdelghani
Naciri, Yassine
Bouzıanı, Asmae
Ajmal, Zeeshan
H'Maida, Khalihana
Boulahya, Aziz
Arahou, Mohamed
Bakiz, Bahcine
Albourine, Abdallah
Fekhaoui, Mohammed
Novel an arginine-modified Heliotrope leaf (Arg@HL) was used as adsorbent for the crystal violet (CV) dye adsorption in a batch process. The physicochemical and morphological composition of Arg@HL were characterized by field-emission-scanning-electron-microscopy (FE-SEM), Fourier transforms infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC). The experiments were carried out to investigate the factors that influence the dye uptake by the adsorbent, such as the contact time under agitation, adsorbent amount, initial dye concentration, temperature and pH of dye solution. The optimum conditions of adsorption were found on the batch scale as followed: CV concentration of 20 mg center dot L-1, an amount of 0.75 g center dot L-1 of the adsorbent, 90 min contact time, 6 pH and 25 degrees C temperature for Arg@HL. The results confirmed a second-order model explaining the dye crystal violet's adsorption's kinetics by Arg-Heliotrope leaves. The Langmuir model effectively defines the adsorption isotherms. The results revealed that the Arg@HL has the potential to be used as a low-cost adsorbent for the removal of CV dye from aqueous solutions.


Synthesis and characterization of waterborne silane coupling agent containing silicone-acrylic resin
Akın, Özlem; Aras, Leyla; Department of Polymer Science and Technology (2004)
In this study, waterborne silicone-acrylic resin was produced by incorporating silane coupling agent onto the acrylic main chain by emulsion polymerization. After applying different emulsion polymerization processes, batch polymerization was selected to obtain the resultant resin. Thus finding the optimum conditions by investigating the parameters of monomer ratios, initiators, concentrations of initiators, temperature and time, the novel resin was synthesized. Water-dispersed silicone-acrylic resin was pro...
Synthesis and characterization of copper phthalocyanine deposited mica titania pigment
Topuz, Berna Burcu; Gündüz, Güngör; Department of Polymer Science and Technology (2010)
In the present work, anatase and rutile titanium dioxide (TiO2) coated lustrous mica pigments were prepared by heterogeneous nucleation method. Anatase-rutile phase transformation of the TiO2 on mica substrate was achieved by coating very thin layers of tin (IV) oxide on mica surfaces prior to TiO2 deposition. Muscovite mica, which was used in the experiments was sieved, pre-treated with sodium bicarbonate and decantated before coating process. The surface morphology of mica titania pigments and anatase-rut...
Synthesis and characterization of copper phthalocyanine and tetracarboxamide copper phthalocyanine deposited mica-titania pigments
Topuz, Berna Burcu; Gündüz, Güngör; MAVİŞ, BORA; Colak, Uner (2013-01-01)
Combination pigments were synthesized by the deposition of copper phthalocyanine and tetracarboxamide copper phthalocyanine on a mica-titania pigment in dimethyl formamide solvent to improve color properties. The MIR and XRD analyses were performed to observe the crystal transformations of the pigments on the substrate. The stable beta form of copper phthalocyanine normally preferred in paint applications was obtained at 90 degrees C and 120 degrees C, while tetracarboxamide copper phthalocyanine remained a...
Production and Structural Characterization of NiB Nanoalloy Synthesized by Ball Milling
Mut, Seda; Mehrabov, Amdulla; Akdeniz, Mahmut Vedat (2016-10-01)
Ni-B nanocrystalline alloy/intermetallic phase powders have been synthesized via mechanical alloying by using high-energy ball milling. The effects of milling time on phase formation, microstructure and magnetic behaviors have been investigated. Milling operation has been carried out with two different compositions of Ni-B alloys as Ni80B20 and Ni60B40 up to 80 hours of milling time. Initial sub-micron sized particles have been reduced down to a size ranged in between 20 nm to 110 nm at the end of ball mill...
Synthesis of Magnetic Fe3O4-Chitosan Nanoparticles by Ionic Gelation and Their Dye Removal Ability
ŞAHBAZ, DENİZ AKIN; YAKAR, ARZU; Gündüz, Ufuk (2015-05-01)
The aim of this study was to synthesize magnetic Fe3O4 chitosan nanoparticles (m-Fe3O4-CNs) by ionic gelation method and use them as adsorbent for the removal of Bromothymol Blue (BB) from aqueous solutions. Also, the effect of various parameters on the preparation of m-Fe3O4-CNs was investigated in this study. The nanoparticles were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectroscopy and ...
Citation Formats
L. Brini et al., “Synthesis and characterization of arginine-doped heliotrope leaves with high clean-up capacity for crystal violet dye from aqueous media,” WATER SCIENCE AND TECHNOLOGY, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: