Sorption—desorption studies of anionic dyes on alumina pretreated with acids

Jain, Vishal; Mundhara, G. L.; Tiwari, J.S.

doi:10.1016/0166-6622(88)80148-3

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…ble, data are listed in moles of dye per unit weight of adsorbent (Table 3). The chemisorption must be due to the interaction The adsorption behavior of alumina-coated silica used in this work differs from that of acid-pretreated alumina (4,5); the of sulfonic ( -SO Ludox CL samples (Table 2) at 25 { 1ЊC.…”

Section: Characterizationmentioning

confidence: 99%

Adsorption of Dyes on Nanosize Modified Silica Particles

Koliadima

Her

et al. 1997

Journal of Colloid and Interface Science

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Section: Characterizationmentioning

confidence: 99%

Adsorption of Dyes on Nanosize Modified Silica Particles

Koliadima

Her

et al. 1997

Journal of Colloid and Interface Science

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“…Many research studies on the adsorption behavior of dyes onto various solid surfaces, such as sludge (3)(4)(5)(6), textiles (7)(8)(9)(10)(11)(12), clay (13)(14)(15), alumina (16)(17)(18)(19), and so on (16), have been done mainly 1 To whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Methylene Blue and Its Congeners on a Stainless Steel Surface

Imamura

Ikeda

Nagayasu

et al. 2002

Journal of Colloid and Interface Science

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“…Silica is the dehydrated form of silica-gel material at high temperature. Non-porous and low charge density silica and silica-gel are difficult to remove from ionic dyes directly [ 25 , 26 , 27 ]. In this case, surface modifications of silica and silica-gel are required to enhance removal efficiency of ionic dyes.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Removal of Anionic Azo Dye New Coccine Using Silica and Silica-gel with Surface Modification by Polycation

et al. 2021

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In the present work, adsorption of anionic azo dye, new coccine (NCC) on silica and silica-gel in an aquatic environment was discovered. Effective conditions such as adsorption time, pH, the influence of dosage on NCC adsorption using strong polycation, poly-diallyl-dimethylammonium chloride (PDADMAC) modified silica (PMS) and PDADMAC modified silica-gel (PMSG) were systematically studied. The removal of NCC using PMS and PMSG were much higher than that using raw silica and silica-gel without PDADMAC in all pH ranges from 3 to 10. The adsorption of NCC onto PMS and PMSG was achieved maxima at the same conditions of contact time 30 min, pH 6. The optimum adsorbent dosages of PMS and PMSG for NCC removal were 10 and 20 mg·mL−1, respectively. Experimental results of NCC adsorption isotherms onto PMS and PMSG at different ionic strength were fitted by Langmuir and Freundlich models. The NCC removal efficiencies using PMS and PMSG were higher than 87%, indicating that PMS and PMSG are novel and reusable adsorbents for removal of anionic dye. Based on adsorption isotherms, and surface group changes after PDADMAC modification and NCC adsorption examined by Fourier transform infrared spectroscopy (FTIR), we demonstrate that electrostatic interaction between positively charged adsorbents’ surfaces and negative sulfonic groups of NCC are the main driving force for anionic azo dye adsorption onto PMS and PMGS adsorbents.

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Sorption—desorption studies of anionic dyes on alumina pretreated with acids

Cited by 10 publications

References 11 publications

Adsorption of Dyes on Nanosize Modified Silica Particles

Adsorption of Dyes on Nanosize Modified Silica Particles

Adsorption Behavior of Methylene Blue and Its Congeners on a Stainless Steel Surface

Adsorptive Removal of Anionic Azo Dye New Coccine Using Silica and Silica-gel with Surface Modification by Polycation

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