Removal of Crystal Violet dye from aqueous solution using ash-based adsorbent materials
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Crystal Violet: Production, Applications and Precautions
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Resumo
Crystal Violet (CV) is widely used for various purposes and enters into
the aquatic systems from the effluents of textile, paint, medical and
biotechnological industries. A considerable amount of this dye is lost
during manufacturing and processing operations. Contaminated
wastewater containing CV must be treated before releasing in the
environment because it is highly cytotoxic and carcinogenic to
mammalian cells, present mitotic poisoning nature and is nonbiodegradable
being classified as a recalcitrant molecule. This chapter
reports the removal of CV dye from water using surfactant-modified zeolite from coal fly ash (MZSF), surfactant-modified zeolite from coal
bottom ash (MZSB) and nanosilica from sugarcane waste ash (SiO2NP).
The adsorbent materials were characterized to obtain chemical and
mineralogical composition and others physicochemical properties. The
adsorption kinetic of CV onto adsorbents was discussed using the
pseudo-first order, pseudo-second order, and Elovich models. The
Langmuir and Freundlich isotherm models were used to describe the
equilibrium adsorption data. The maximum adsorption capacities were
36.7 mg g-1 and 21.1 mg g-1 for CV/MZSF and CV/MZSB, respectively.
The adsorption process of CV/SiO2NP achieves equilibrium in 60 min of
contact time, and the maximum adsorption capacity was 117.98 mg g-1.
Application of the adsorbent materials synthesized from agricultural
waste and coal combustion products can ensure the sustainability and
cost-effectiveness of treating effluent containing CV dye, especially
effluent from the textile industries generated in large quantity.
Como referenciar
FUNGARO, DENISE A.; ROVANI, SUZIMARA; BERTOLINI, THARCILA C.R.; FILHO, FLAMARION F. Removal of Crystal Violet dye from aqueous solution using ash-based adsorbent materials. In: DUFFET, VICTOR (ed.). Crystal Violet: Production, Applications and Precautions. Hauppauge, NY, USA: Nova Science Publishers, 2019. , cap. 3. p. 1-40. Disponível em: http://repositorio.ipen.br/handle/123456789/30872. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.