scholarly journals Exploring the Reusability of Synthetically Contaminated Wastewater Containing Crystal Violet Dye using Tectona grandis Sawdust as a Very Low-Cost Adsorbent

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Fouzia Mashkoor ◽  
Abu Nasar ◽  
Inamuddin ◽  
Abdullah M. Asiri
Keyword(s):  
Crystal Violet ◽  
Low Cost ◽  
Tectona Grandis ◽  
Crystal Violet Dye

Degradation of Colored Polystyrene Films

2018 ◽  
Vol 930 ◽  
pp. 254-257 ◽  
Author(s):  
Francisca Pereira de Araújo ◽  
Josy Anteveli Osajima ◽  
Mônica Regina Silva de Araujo ◽  
Edson Cavalcanti da Silva Filho ◽  
João Sammy Nery de Souza
Keyword(s):  
Crystal Violet ◽  
Carbonyl Compounds ◽  
Low Cost ◽  
Chemical Properties ◽  
Polymer Materials ◽  
Visible Radiation ◽  
No Formation ◽  
Crystal Violet Dye ◽  
Physical And Chemical ◽  
And Chemical Properties

Polystyrene is commercial polymer of extensive use in industrial scale due to great physical and chemical properties and low cost. Lifespan of polymer materials can be changed by incorporation of additions to polymeric matrix.The present study aimed to evaluate the influence of crystal violet dye in polystyrene matrices when irradiated by visible radiation. The samples were studied in the form of films, in which solution of crystal violet (5.0x10-4mol.L-1) was added to the PS solution (8% w / w). The films were irradiated with commercial lamp for 150 hours and analyzed with UV-Vis and FTIR. The results showed that the dye degraded at a rate of 16%, however the FTIR analysis revealed that polystyrene did not degrade under the conditions studied, since no formation of carbonyl compounds was observed.

scholarly journals Adsorption of Crystal Violet onto an Agricultural Waste Residue: Kinetics, Isotherm, Thermodynamics, and Mechanism of Adsorption

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Ilyasse Loulidi ◽  
Fatima Boukhlifi ◽  
Mbarka Ouchabi ◽  
Abdelouahed Amar ◽  
Maria Jabri ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Low Cost ◽  
Agricultural Waste ◽  
X Ray Diffraction ◽  
Almond Shell ◽  
Experimental Conditions ◽  
Batch Mode ◽  
Crystal Violet Dye ◽  
Pseudo Second Order ◽  
Effectiveness And Efficiency

Agricultural waste can be exploited for the adsorption of dyes, due to their low cost, availability, cost-effectiveness, and efficiency. In this study, we were interested in the elimination of crystal violet dye, from aqueous solutions, by adsorption on almond shell-based material, as a low-cost and ecofriendly adsorbent. The almond shells were first analyzed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction; then, the influence of adsorbent dose, initial dye concentration time, and pH were studied to assess adsorption capacity under optimal experimental conditions. Experimental results indicate that almond shell adsorbent removes about 83% of the dye from the solutions at room temperature and in batch mode; the kinetic study showed that the equilibrium time is about 90 min, and the model of pseudo-second order could very well describe adsorption kinetics. The modulation of adsorption isotherms showed that retention follows the Langmuir model. The thermodynamic study has shown that the adsorption is endothermic (ΔH° > 0) and spontaneous (ΔG° < 0).

scholarly journals Adsorption of crystal violet dye onto olive leaves powder: Equilibrium and kinetic studies

2021 ◽  
Author(s):  
CI Chemistry International
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Crystal Violet ◽  
Low Cost ◽  
Wave Length ◽  
Kinetic Studies ◽  
Absorption Spectrometry ◽  
Isotherm Models ◽  
Olive Leaves ◽  
Crystal Violet Dye

Adsorption of crystal violet dye from aqueous solutions applying olive leaves powder (OLP) as a biosorbent has been examined under various experimental circumstances. The influence of contact time, pH, initial concentration of studied dye and adsorbent dose on the adsorption process has been investigated applying batch experiments. The concentration of remaining dye has been determined using molecular absorption spectrometry at wave length of 580 nm. The maximum removal of studied dye has been realized at pH 7.5 with a percent removal of 99.2% after 20 min of agitation time. Langmuir, Freundlich, and Temkin isotherm models exemplify the best fit for the experimental data; while the elevated adsorption capacity was 181.1 mg.g1. Adsorption kinetics of crystal violet was expected sufficiently with the empirical pseudo-second-order model. Corresponding to the adsorption capacity, olive leaves powder thought as a low cost, effective, and environmentally friendly biosorbent for the removal of crystal violet dye from aqueous solutions.

Adsorption of Crystal Violet dye by using a low-cost adsorbent – peanut husk

2021 ◽  
Vol 233 ◽  
pp. 387-398
Author(s):  
Sohail Abbas ◽  
Tariq Javed ◽  
Shagufta Zafar ◽  
Muhammad Babar Taj ◽  
Ahmad Raza Ashraf ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Low Cost ◽  
Crystal Violet Dye

Potential use of Momordica charantia (bitter gourd) waste as a low-cost adsorbent to remove toxic crystal violet dye

2017 ◽  
Vol 82 ◽  
pp. 121-130 ◽  
Author(s):  
Linda B.L. Lim ◽  
Namal Priyantha ◽  
Ke Jia Mek ◽  
Nur Afiqah Hazirah Mohamad Zaidi
Keyword(s):  
Crystal Violet ◽  
Low Cost ◽  
Momordica Charantia ◽  
Bitter Gourd ◽  
Crystal Violet Dye ◽  
Potential Use

scholarly journals Robust Superhydrophobic Cellulose Nanofiber Aerogel for Multifunctional Environmental Applications

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 495 ◽  
Author(s):  
Hasan. M. ◽  
Deepu Gopakumar ◽  
Vishnu Arumughan ◽  
Yasir Pottathara ◽  
Sisanth K. S. ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Hydrophobic Interactions ◽  
Low Cost ◽  
Cellulose Nanofibers ◽  
Dye Adsorption ◽  
Research Area ◽  
Textile Dyes ◽  
Cellulose Nanofiber ◽  
Crystal Violet Dye ◽  
Modified Cellulose

The fabrication of superadsorbent for dye adsorption is a hot research area at present. However, the development of low-cost and highly efficient superadsorbents against toxic textile dyes is still a big challenge. Here, we fabricated hydrophobic cellulose nanofiber aerogels from cellulose nanofibers through an eco-friendly silanization reaction in liquid phase, which is an extremely efficient, rapid, cheap, and environmentally friendly procedure. Moreover, the demonstrated eco-friendly silanization technique is easy to commercialize at the industrial level. Most of the works that have reported on the hydrophobic cellulose nanofiber aerogels explored their use for the elimination of oil from water. The key novelty of the present work is that the demonstrated hydrophobic cellulose nanofibers aerogels could serve as superadsorbents against toxic textile dyes such as crystal violet dye from water and insulating materials for building applications. Here, we make use of the possible hydrophobic interactions between silane-modified cellulose nanofiber aerogel and crystal violet dye for the removal of the crystal violet dye from water. With a 10 mg/L of crystal violet (CV) aqueous solution, the silane-modified cellulose nanofiber aerogel showed a high adsorption capacity value of 150 mg/g of the aerogel. The reason for this adsorption value was due to the short-range hydrophobic interaction between the silane-modified cellulose nanofiber aerogel and the hydrophobic domains in crystal violet dye molecules. Additionally, the fabricated silane-modified cellulose nanofiber hydrophobic aerogels exhibited a lower thermal conductivity value of 0.037 W·m−1 K−1, which was comparable to and lower than the commercial insulators such as mineral wools (0.040 W·m−1 K−1) and polystyrene foams (0.035 W·m−1 K−1). We firmly believe that the demonstrated silane-modified cellulose nanofiber aerogel could yield an eco-friendly adsorbent that is agreeable to adsorbing toxic crystal violet dyes from water as well as active building thermal insulators.

scholarly journals Parkia speciosa (Petai) pod as a potential low-cost adsorbent for the removal of toxic crystal violet dye

2016 ◽  
Vol 15 ◽  
Author(s):  
Linda Biaw Leng Lim ◽  
Namal Priyantha ◽  
Hui Hsin Cheng ◽  
Nur Afiqah Hazirah
Keyword(s):  
Adsorption Isotherm ◽  
Crystal Violet ◽  
Low Cost ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Medium Ph ◽  
Crystal Violet Dye ◽  
Intra Particle Diffusion ◽  
Pseudo Second Order ◽  
Optimized Conditions

This study focused on the use of Parkia speciosa (Petai) pod as a potential adsorbent for the removal of crystal violet (CV) dye. Batch adsorption isotherm experiments carried out under optimized conditions were fitted to six isotherm models, namely Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Redlich-Peterson and Sips. Of these, the Sips model best described the adsorption isotherm of Petai pod for the removal of CV dye, giving a desirable adsorption capacity (qmax) of 163.2 mg g-1. Adsorption kinetics was found to follow the pseudo-second order, and further, intra-particle diffusion played a significant role. This study also revealed that the adsorption of CV by Petai pod is influenced by the ionic strength of the medium. However, Petai pod showed resilience towards changes in medium pH.  

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