The removal of cationic dyes from aqueous solutions by adsorption onto pistachio hull waste

Abstract In this work, the ability of chrome shavings and of crust leather buffing dusts to remove dyes from aqueous solutions has been studied. Buffing dusts proved to be a much better adsorbent than chrome shavings for cationic dyes. The adsorption of anionic dyes is very important on two studied wastes. The pH has an obvious influence on the adsorption of dyes. Adsorption of cationic dyes is less favourable under acidic conditions (pH <3.5) and at high pH values (pH >10.5). The adsorption of anionic dyes on both adsorbents is more favourable under acidic conditions (pH <3). The adsorption on chrome shavings is improved by the use of finer particles. The kinetic adsorption was also studied. Adsorption isotherms, at the optimum operating conditions, were determined. Adsorption follows the Langmuir model. The isotherm parameters have been calculated. The column technique could be applied to treat significant volumes of solutions.

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REMOVAL OF Cd(II) AND Pb(II) FROM AQUEOUS SOLUTIONS BY PISTACHIO HULL WASTE

Revista Internacional de Contaminación Ambiental ◽

10.20937/rica.2018.34.02.11 ◽

2018 ◽

Vol 34 (2) ◽

pp. 307-316 ◽

Cited By ~ 3

Author(s):

Mohsen Hamidpour ◽

◽

Nahid Hosseini ◽

Vahid Mozafari ◽

Mohammad Heshmati Rafsanjani ◽

...

Keyword(s):

Aqueous Solutions ◽

Hull Waste

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Synthesis of magnetic functionalized MWCNT nanocomposite through surface RAFT co-polymerization of acrylic acid and N-isopropyl acrylamide for removal of cationic dyes from aqueous solutions

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2018.05.063 ◽

2018 ◽

Vol 161 ◽

pp. 34-44 ◽

Cited By ~ 14

Author(s):

Soleyman Hosseinzadeh ◽

Hossein Hosseinzadeh ◽

Shahryar Pashaei ◽

Zahra Khodaparast

Keyword(s):

Acrylic Acid ◽

Aqueous Solutions ◽

Cationic Dyes ◽

Isopropyl Acrylamide

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Fabrication of MoO3 Nanowire-based Membrane Devices for the Selective Adsorption of Cationic Dyes from Aqueous Solutions with High Performance and Reusability

Micromachines ◽

10.3390/mi10090586 ◽

2019 ◽

Vol 10 (9) ◽

pp. 586 ◽

Cited By ~ 1

Author(s):

Zhang ◽

Park

Keyword(s):

Methylene Blue ◽

Methyl Orange ◽

Aqueous Solutions ◽

Rhodamine B ◽

High Performance ◽

Selective Adsorption ◽

Treatment Method ◽

Cationic Dyes ◽

Adsorption Ability ◽

Anionic Dye

A series of ultralong (up to tens of micrometers) MoO3 nanowire-based membranes were synthesized for the treatment of aqueous solutions containing the cationic dyes methylene blue (MB) and rhodamine B (RhB). This treatment method possesses extremely rapid and superhigh adsorbability (up to 521 and 321 mg/g for MB and RhB, respectively), as well excellent selective adsorption ability of cationic dyes with respect to the anionic dye methyl orange (MO). Moreover, the cationic dyes on the membrane can be desorbed easily, and reusability is good.

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