Utilization of Passion Fruit Skin By-Product as Lead(II) Ion Biosorbent

Gerola, Gislaine Passarella; Boas, Naiza V.; Caetano, Josiane; Tarley, César Ricardo Teixeira; Gonçalves, Affonso Celso; Dragunski, Douglas Cardoso

doi:10.1007/s11270-013-1446-z

Cited by 35 publications

(42 citation statements)

References 38 publications

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“…After soaking with nickel nitrate solution, all of the functional groups bands of the OPMF show some changes, especially the -OH stretching (3318 cm -1 ), suggesting the major attachment of Ni 2+ was on the -OH groups. In agreement with other previous finding [12], other functional groups (carbonyl, carboxyl and C-O-C groups) were also found to participate in the binding of metal ions to the biomass.…”

Section: Nickel Adsorption Onto Opmfsupporting

confidence: 92%

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Gasification of Nickel-Preloaded Oil Palm Biomass with Air

Syed‐Hassan¹,

Nor-Azemi²

2016

Bull. Chem. React. Eng. Catal.

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This study experimentally investigates the gasification of nickel-preloaded oil palm biomass as an alternative catalytic approach to produce clean syngas. To eliminate the use of catalyst support, nickel was added directly to the oil palm mesocarp fiber via ion-exchange using an aqueous solution of nickel nitrate. Nickel species was found to disperse very well on the biomass at a nano-scale dispersion. The presence of the finely dispersed nickels on biomass enhanced syngas production and reduced tar content in the producer gas during the air gasification of biomass. It is believed that nickel particles attached on the biomass and its char promote the catalytic cracking of tar on their surface and supply free radicals to the gas phase to enhance the radical-driven gas-phase reactions for the reforming of high molecular weight hydrocarbons. The unconsumed nickel-containing char shows great potential to be re-utilised as a catalyst to further enhance the destruction of tar components in the secondary tar reduction process.

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Section: Nickel Adsorption Onto Opmfsupporting

confidence: 92%

“…Carbon gasification: C+ CO2→ 2CO (10) C + H2O → CO+ H2 (11) C + 2H2→ CH4 (12) In the absence of catalyst and at a relatively low temperature (<1000 °C), the extent of reac- 3-7) is rather limited. Significant portion of hydrocarbon volatiles remain unconverted until they exit the reactor.…”

Section: Biomass Decompositionmentioning

confidence: 99%

Gasification of Nickel-Preloaded Oil Palm Biomass with Air

Syed‐Hassan¹,

Nor-Azemi²

2016

Bull. Chem. React. Eng. Catal.

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“…Furthermore, it should be noted that the adsorption capacity of the modified biomass was higher than the one in natura, confirming the efficiency of this material. For better understanding of this mechanism, models of pseudo-first order, pseudo-second order, Elovich equation and intra-particle diffusion were applied (Doğan, Alkan, Türkyilmaz, & Özdemir, 2004;Gerola et al, 2013;Kalavathy, Karthikeyan, Rajgopal, & Miranda, 2005;Özcan, Özcan, Tunali, Akar, & Kiran, 2005;Pérez-Marín et al, 2007). The values found for each model are presented in Table 1.…”

Section: Influence Of Time On Adsorptionmentioning

confidence: 99%

<b>Biosorbent of macadamia residue for cationic dye adsorption in aqueous solution

et al. 2017

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ABSTRACT. This study evaluated the adsorption capacity of the methylene blue dye in macadamia residues, in natura and chemically modified. The waste characterization was performed using SME and spectroscopy in the infrared region, indicating the presence of carboxyl, carbonyl and hydroxyl groups. The equilibrium time for both residues was 240 minutes, following a kinetic described by models of the pseudo second-order and intra-particle diffusion. The maximum adsorption capacity was 117 mg g -1 to the residue in natura and 184 mg g -1 for the modified one, and was described by the Freundlich isotherm model. The system demonstrated to be spontaneous and favorable for both studied materials. Thus, these residues are promising for the adsorption of methylene blue dye in effluents.Keywords: effluent, agro industrial waste, methylene blue, Macadamia biomass.Resíduo de macadâmia como biossorvente para adsorção de corante catiônico em solução aquosa RESUMO. O presente trabalho avaliou a capacidade de adsorção do corante azul de metileno em resíduos de noz-macadâmia in natura e quimicamente modificado. A caracterização dos resíduos foi realizada utilizando MEV e espectroscopia na região do infravermelho a qual indicou a presença de grupos carboxílicos, carbonila e hidroxila. O tempo de equilíbrio alcançado para ambos os resíduos foi de 240 min., seguindo a cinética descrita pelos modelos de pseudo segunda-ordem e difusão intrapartícula. A capacidade máxima de adsorção foi 117 mg g -1 para o resíduo in natura e 184 mg g -1 para o modificado, sendo descrita pelo modelo isotérmico de Freundlich. O sistema mostrou-se espontâneo e favorável para os dois materiais estudados. Desta forma, estes resíduos são promissores para a adsorção do corante azul de metileno em efluentes.Palavras-chave: efluente, resíduo agroindustrial, azul de metileno, biomassa de macadâmia.

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“…Para melhor entendimento deste mecanismo e analisar os dados obtidos experimentalmente, aplicaram-se os modelos de pseudo-primeira ordem, pseudo-segunda ordem, equação de Elovich e difusão intra-partícula (Doğan et al, 2004;Kalavathy et al, 2005;Özcan et al, 2005;Pérez-Marín et al, 2007;Gerola et al, 2013). Os valores encontrados para cada modelo se encontram na Tabela 1.…”

Section: Figura 1 Espectro De Infravermelho Dos Resíduos Da Palha Deunclassified

Biossorção de azul de metileno utilizando resíduos agroindustriais

Honorato

Machado

Celante

et al. 2015

Rev. bras. eng. agríc. ambient.

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R E S U M OO presente trabalho avaliou a capacidade de adsorção do corante azul de metileno nos resíduos da palha de milho e da bainha do palmito pupunha in natura. A caracterização dos resíduos foi determinada utilizando-se a microscopia eletrônica de varredura e espectroscopia na região do infravermelho a qual indicou a presença de grupos carboxílicos, hidroxila e carbonila. O tempo necessário para que o sistema atingisse o equilíbrio para ambos os resíduos foi de 240 min, seguindo uma cinética descrita pelo modelo de pseudosegunda ordem. A capacidade máxima de adsorção foi de 102,8 mg g -1 para o resíduo da palha de milho, seguindo o modelo de isoterma de Langmuir e 50,9 mg g -1 para o resíduo de palmito pupunha, sendo que o modelo que melhor se ajusta foi Freundlich. Desta forma, esses resíduos são promissores para a adsorção do corante azul de metileno em efluentes. Biosorption of methylene blue using agro-industrial residues A B S T R A C TThis study evaluated the ability of adsorption of methylene blue dye in waste of corn straw and sheath of palmetto pupunha in natura. The characterization of the waste was performed using MEV and spectroscopy in the infrared region, which indicated the presence of carboxyl groups, hydroxyl and carbonyl. The time required for the system to reach equilibrium for both residues was approximately 240 min, following the kinetics of pseudo-second order. The maximum adsorption capacity was 102.8 mg g -1 for corn straw, following the isotherm model of Langmuir and 50.9 mg g -1 for the residue of the sheath of palmetto pupunha, following the isotherm model of Freundlich. Thus, the wastes are promising for adsorption of methylene blue dye in effluents.Palavras-chave: efluente corante palha de milho palmito pupunha Key words: effluents dye corn stover palmetto pupunha

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Utilization of Passion Fruit Skin By-Product as Lead(II) Ion Biosorbent

Cited by 35 publications

References 38 publications

Gasification of Nickel-Preloaded Oil Palm Biomass with Air

Gasification of Nickel-Preloaded Oil Palm Biomass with Air

<b>Biosorbent of macadamia residue for cationic dye adsorption in aqueous solution

Biossorção de azul de metileno utilizando resíduos agroindustriais

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