Literature DB >> 28748437

Application of ultrasound modified corn straw as adsorbent for malachite green removal from synthetic and real effluents.

Diana Ramos Lima1, Laura Klein1, Guilherme Luiz Dotto2.   

Abstract

This work aimed to study the removal of malachite green dye from wastewaters through adsorption using raw corn straw (RCS) and ultrasound-assisted modified corn straw (MCS). RCS and MCS were prepared and characterized in detail. The characterization indicated that RCS and MCS presented favorable structures for malachite green adsorption and that the ultrasound treatment provided a disorganization of the adsorbent's crystalline regions and also caused the formation of cavities and protuberances. The adsorption study was performed by equilibrium isotherms, kinetic curves, thermodynamic parameters, and application in real effluents composed of dye mixtures and inorganic compounds. The Elovich model was suitable for the adsorption kinetics and the Freundlich model was appropriate to represent the equilibrium. The maximum experimental adsorption capacities were 200 mg g-1 for RCS and 210 mg g-1 for MCS, obtained at 328 K. MCS was more effective than RCS to treat real effluents, attaining around 92% of color removal.

Entities:  

Keywords:  Adsorption; Corn straw adsorbent; Dyes; Ultrasound-assisted treatment

Mesh：

Substances：

Year:  2017        PMID： 28748437     DOI： 10.1007/s11356-017-9802-y

Source DB:  PubMed          Journal:  Environ Sci Pollut Res Int        ISSN： 0944-1344            Impact factor:   4.223


  12 in total

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Authors:  Cibele S Umpierres; Lizie D T Prola; Matthew A Adebayo; Eder C Lima; Glaydson S Dos Reis; Diego D F Kunzler; G L Dotto; Leliz T Arenas; Edilson V Benvenutti
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Journal:  Environ Sci Pollut Res Int       Date:  2018-12-13       Impact factor: 4.223

2.  Adsorption of a textile dye onto piaçava fibers: kinetic, equilibrium, thermodynamics, and application in simulated effluents.

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4.  Functionalization of corn stover with 3-aminopropyltrietoxysilane to uptake Reactive Red 141 from aqueous solutions.

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5.  Removal of Procion Red dye from colored effluents using H2SO4-/HNO3-treated avocado shells (Persea americana) as adsorbent.

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Journal:  Environ Sci Pollut Res Int       Date:  2017-12-16       Impact factor: 4.223
  5 in total

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