+1 credit
| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
|---|---|---|---|---|---|---|
| 1 | Jack Zhong | -- | 215 | 2026-09-24 05:00:54 | | | |
| 2 | Jack Zhong | -14 word(s) | 201 | 2026-09-24 05:03:43 | | |
Video Upload Options
Crystal violet is a synthetic triarylmethane cation that serves as a histological stain, a textile dye and an antimicrobial agent, and it is one of the dyes most often chosen as a model pollutant in adsorption studies. It is persistent, brightly coloured and potentially toxic, and it is poorly removed by conventional biological treatment, so uptake onto a cheap solid is the treatment most examined. Because the molecule is a large organic cation, the uptake is governed by the surface charge of the adsorbent and by the pore size relative to the ion, and mesoporous oxides with pores wide enough to admit it adsorb it readily from neutral solution [1]. Agricultural residues are the most frequently tested low-cost adsorbents, date palm fibre being one of them [2]. Chemically modified rice husk is another [3]. Their performance is compared through the adsorption isotherm and the uptake rate rather than through a single capacity figure [4]. Polymer fibres and nanofibre mats carrying a natural gum give a reusable form of the same adsorbent [5]. Reported capacities are strongly pH dependent and are rarely measured at a comparable ionic strength, so values from different studies are not directly comparable.
References
- Monash, P.; Pugazhenthi, G. Adsorption of crystal violet dye from aqueous solution using mesoporous materials synthesized at room temperature. Adsorption 2009, 15, 390-405. [CrossRef]
- Alshabanat, M.; Alsenani, G.; Almufarij, R. Removal of Crystal Violet Dye from Aqueous Solutions onto Date Palm Fiber by Adsorption Technique. Journal of Chemistry 2013, 2013, 210239. [CrossRef]
- Homagai, P.L.; Poudel, R.; Poudel, S.; Bhattarai, A. Adsorption and removal of crystal violet dye from aqueous solution by modified rice husk. Heliyon 2022, 8, e09261. [CrossRef]
- Chadha, M.; Berry, S. Evaluation of adsorption kinetics and equilibrium for crystal violet dye removal from wastewater using papaya peel waste as a sustainable adsorbent. Discover Chemistry 2025, 2, 260. [CrossRef]
- Thamer, B.M.; Abdo, H.S. Tragacanth gum-enhanced adsorption performance of polyvinyl alcohol nanofibers for cationic crystal violet dye removal. Biomass Conversion and Biorefinery 2024, 14, 8979-8991. [CrossRef]
