Copper sorption from aqueous solutions and sugar cane spirits by chemically modified babassu coconut (Orbignya speciosa) mesocarp

Vieira, Adriana P.; Santana, Sirlane Aparecida Abreu; Bezerra, Cícero Wellington Brito; Silva, Hildo A. S.; Melo, Júlio C.P. de; Filho, Edson Cavalcanti da Silva; Airoldi, Cláudio

doi:10.1016/j.cej.2010.04.036

Cited by 76 publications

(48 citation statements)

References 31 publications

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“…To do so, many techniques have been proposed to remediate wastewaters [9][10][11][12][13][14][15][16][17][18][19][20][21]. One of the main techniques is the use of adsorbent materials like zeolites, silicas, polymers, cellulose, industrial/agricultural wastes, activated carbon and clays among others [13,[15][16][17][18][19][20][21][22]. Nevertheless, some of these materials in their bare forms do not present extraordinary adsorptive capacity and, thus, require an organofunctionalization step, prior to their application as adsorbents [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Cassava root husks powder as green adsorbent for the removal of Cu(II) from natural river water

Jorgetto

Silva

Saeki

et al. 2014

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Cassava root husks powder as green adsorbent for the removal of Cu(II) from natural river water

Jorgetto

Silva

Saeki

et al. 2014

Applied Surface Science

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“…In order to improve the sorption capacity of these biomaterials, agricultural by-products have been chemically modified with different reagents and methods. Most materials obtained from chemical modification have been used to remove metals (Randall et al 1978, Okieimen and Okundaye 1989, Laszlo and Dintzis 1994, Wartelle and Marshall 2000, Vieira et al 2010, while dye removal is covered by few reported studies. Some studies have reported modification of lignocellulosic materials to remove cationic dyes (Gong et al 2006, Mao et al 2010.…”

mentioning

confidence: 99%

Sawdust Derivative for Environmental Application: Chemistry, Functionalization and Removal of textile dye from aqueous solution

Pinto

Bezerra

Silva

et al. 2016

An. Acad. Bras. Ciênc.

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The adsorption of Violet Remazol 5R (VR 5) on wood sawdust modified with succinic anhydride (SSA) as a function of contact time, pH, and initial dye concentrations was investigated using a batch technique under ambient conditions. The SSA obtained was confirmed by IR spectroscopy, thermogravimetry and 13 C NMR, and degrees of substitution (DS) were calculated. A study on the effect of the pH on the adsorption of VR 5 showed that the optimum pH was 2.0. The interactions were assayed with respect to the pseudofirst-order and pseudo-second-order kinetic models, and were found to follow closely the pseudo-secondorder. The isotherm was adjusted to the Langmuir, the Freundlich and the Temkin sorption models. SSA is a promising material for the removal of dye textile from aqueous solutions, and under conditions studied the removal percentage achieved was 51.7%.

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“…Results obtained from these IR spectra show remarkable coincidence in the presence of some functional groups reported by Garg et al (2008) for sugarcane and bagasse fibers, and by Vieira et al (2010) for the babassu coconut fibers. In this work, the peaks observed, about 3260, 2930, 1720, 1610 and 1030 cm -1 , reveal a similar composition of functional groups detected for other vegetable fibers by the aforementioned authors.…”

Section: Resultsmentioning

confidence: 69%

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

Luzardo¹,

Velasco²,

Alves³

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TIn this work, a study of the correlation between the functional groups present in the chemical structure of the fibers of coconut shells, cocoa and eucalyptus, and their adsorption capacity of Cd +2 and Cu +2 ions from water was performed. The content of soluble solids and reactive phenols in aqueous extracts were determined. The chemical functional groups present in the fibers were examined using the IR spectra. The adsorption capacity of the peels was determined using atomic absorption spectrophotometer. For Cd +2 , a significant correlation between the adsorption capacity and some specific chemical functional groups present in the fiber was verified. The potential use of these peels, as adsorbent of Cd +2 ions, is based on the presence of OH functional groups such as aryl-OH, aryl-O-CH 2 of phenol carboxylic acids, as well as carbonyl groups derived from carboxylic acid salts, in these fibers.Caracterização química de resíduos sólidos agroflorestais visando à sua utilização como adsorventes de metais em água R E S U M O Neste trabalho foi realizado um estudo da correlação entre os grupos funcionais presentes na estrutura química das fibras de casca de coco, cacau e de eucalipto e sua capacidade de adsorção de íons de Cd +2 e Cu +2 da água. Foram determinados o teor de sólidos solúveis e fenois reativos em extratos aquosos. Os grupos químicos funcionais presentes nas fibras foram analisados utilizando-se os espectros de IV. A capacidade de adsorção das cascas foi determinada através de um espectrofotômetro de absorção atômica. Para os íons de Cd +2 foi encontrada uma correlação significativa entre a capacidade de adsorção e alguns grupos funcionais químicos presentes na fibra. O uso potencial dessas cascas, como adsorvente de íons de Cd +2 , se baseia na presença de grupos funcionais arilo-OH, arilo-O-CH 2 de ácidos carboxílicos fenois, tais como grupos carbonila derivados a partir de sais de ácidos carboxílicos, nessas fibras.

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Copper sorption from aqueous solutions and sugar cane spirits by chemically modified babassu coconut (Orbignya speciosa) mesocarp

Cited by 76 publications

References 31 publications

Cassava root husks powder as green adsorbent for the removal of Cu(II) from natural river water

Cassava root husks powder as green adsorbent for the removal of Cu(II) from natural river water

Sawdust Derivative for Environmental Application: Chemistry, Functionalization and Removal of textile dye from aqueous solution

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

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