Sorption kinetics of copper, zinc, cadmium and nickel ions on synthesized silico-antimonate ion exchanger

Abou-Mesalam, M.M.

doi:10.1016/s0927-7757(03)00191-2

Cited by 138 publications

(58 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A broad band between 3201.83 and 3518.16 cm −1 in both adsorbents is indicative of the presence of free and hydrogen bonded OH groups on adsorbent surface. This stretching is due to both the silanol groups (Si-OH) and adsorbed water (peak at 3400 cm −1 ) at the adsorbent surface (Abou-Mesalam 2003). (Ho et al 2001).…”

Section: Ft-ir Spectroscopymentioning

confidence: 99%

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

et al. 2018

View full text Add to dashboard Cite

In this study, adsorption potential of soya bean adsorbent for lead (Pb) and arsenic (As) has been assessed in order to consider its suitability for purification of wastewater containing heavy metals. The main focus of study was on Pb and As. Batch experiments were performed to study the adsorption of Pb and As on soya bean absorbent. The effect of various experimental parameters (adsorbent dose, contact time, temperature and pH) was studied, and optimal conditions were determined. The effect of adsorbent dose on the biosorption of Pb and As from aqueous solution was studied at 37 °C by varying the adsorbent amount from 1 g/100 ml to 4 g/100 ml. Highest amount of Pb and As was adsorbed at sorbent amount of 3 g/100 ml. The optimum pH for removal of As and Pb was found to be 2.0 and 4.0 ± 0.26. Maximum biosorption of Pb and As was achieved at 37 °C. The maximum percentage removal of Pb and As was attained at 60 min of shaking time. Langmuir and Freundlich isotherm models were utilized for equilibrium studies. It was found that biosorption by soya bean adsorbent was exothermic in nature. The thermal degradation analysis suggested that the degradation occurs in two steps and adsorbent is thermally stable.Keywords Biosorption · Soya bean adsorbent · Lead and arsenic · Sorption isotherm and thermal analysis of biosorbent

show abstract

Section: Ft-ir Spectroscopymentioning

confidence: 99%

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

et al. 2018

View full text Add to dashboard Cite

show abstract

“…FT-IR of the un-activated carbon show band at 1246 cm-1, predicting the presence of phenolic and lactonic groups,while -O -H group may be indicated from the bands in the region 1377 -1447. The absorption bands assigned in the region 1520 -1622 may be attributed to quinonic and carboxylate groups [1,14,[27][28][29].For steam activated, slight shifts of week absorption bands characterizing the previous reported groups were found. Moreover, some of the detected absorption bands either disappeared or became less predominant.…”

Section: Resultsmentioning

confidence: 99%

“…The progressive increase of industrial technology results in continuous increase of pollution, so that a great effort has been devoted for minimizing these hazardous pollutants and therefore avoiding their dangerous effects of animals, plants and humans [1][2][3][4][5][6][7].In brief, the enrichment of waste water with these metals beyond the healthy levels may causes a poisoning, leading to dysfunction of the kidney, reproductive system, liver, brain and also central nervous system [8].The removals of these hazardous materials may be performed using various techniques, including precipitation [9], membrane filtration [10], ion exchange [11][12], sorptive flotation [13], and adsorption [1][2][3][4][5][6][7].The removal of heavy metals via adsorption over solid adsorbents, e.g. activated carbons and others, is one of the most convenient methods used [14][15][16][17][18][19][20][21].Activated carbon prepared from solid wastes still excellent adsorbents for many toxic materials present in the various types of waste water. This ability to arrest the different pollutant molecules is mainly attributed to its higher specific surface area [21].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of heavy metals by activated carbon synthesized from solid wastes

Kanawade¹,

Gaikwad²

2011

IJCEA

View full text Add to dashboard Cite

Abstract-Dates pits as a huge solid waste were used to prepare physically and chemically activated carbon. The raw materials were physically activated with steam (CS), while the chemically activated samples were prepared in the presence of zinc chloride (CZ) and phosphoric acid (CA), individually. The textural properties, including surface area, mean pore radius and total pore volume, were determined from the low temperature adsorption of nitrogen at 78 K. FT -IR spectroscopy and base neutralization capacity were used for the description of surface groups. The adsorption of heavy metals as pollutants, including Cu2+, Mn2+, Pb2+, Fe3+ and Cd2+ was studied in a batch experiments.The type and amount of used activator had considerable effects on the textural characteristics of investigated samples, i.e. it develops the porosity and therefore changes the textural properties. These changes of textural properties were associated with an excellent removal efficiency, exceeds 92 % and depending on the type of activator.

show abstract

“…A faixa de concentração do CTAB estava abaixo da concentração micelar crítica (CMC), para evitar a formação de micelas [20,21]. Para o estudo do efeito do pH no processo de adsorção do surfatante na matriz inorgânica fez-se o ajuste do pH da solução de CTAB em pH 9,6 com solução de NaOH (0,1 mol.L -1 ) e em pH 3,0 com adição de uma solução de H 3 PO 4 (0,3 mol.L -1 ).…”

Section: Estudo Da Adsorção Do Surfatante Ctab Na Matriz Inorgânicaunclassified

“…Dentre os modelos de adsorção com ligações químicas estudadas, os que mais se aplicam aos fenômenos de adsorção líquidos-sólidos são os modelos de Langmuir e de Freundlich [17]. Esses modelos são os mais freqüentemente usados para descrever isotermas para aplicações em tratamento de águas e de efluentes [18][19][20][21].…”

Section: Introductionunclassified

Estudo da adsorção de surfactante catiônico em uma matriz inorgânica preparada via óxido de nióbio

Pereira

Silva

2009

Cerâmica

View full text Add to dashboard Cite

ResumoUma aplicação que vem sendo estudada para o nióbio na forma de fosfato hidratado é no processo de adsorção. Os fosfatos são constituídos por cristais lamelares, o que possibilita a utilização em processo de adsorção de moléculas polares como o surfactante catiônico brometo de cetiltrimetilamônio (CTAB). Este trabalho descreve o estudo da adsorção do surfactante CTAB em uma matriz preparada a partir do óxido de nióbio. O adsorvente preparado foi caracterizado por difração de raios X, termogravimetria, microscopia eletrônica de varredura acoplada a um espectrômetro de dispersão de energia e por análise de área superficial específica. Para o estudo de adsorção utilizaram-se isotermas de Langmuir e de Freundlich. No processo de adsorção variou-se o pH, podendose observar melhor quantidade adsorvida em pH 3,0 com Q 0 = 16,52 mg.g -1 . O processo de adsorção mostrou comportamento favorável para o modelo de Langmuir e desfavorável para o modelo de Freundlich. Palavras-chave: adsorção, isoterma de Langmuir, isoterma de Freundlich. Abstract One of the applications that have been studied for niobium is the adsorption process, in the form of hydrous phosphates. These materials are constituted of lamellar crystals, what make them possible to be used in adsorption processes and polar molecules intercalation as the cationic as the cationic surfactant cetyltrimethyammonium bromide (CTAB

show abstract

Sorption kinetics of copper, zinc, cadmium and nickel ions on synthesized silico-antimonate ion exchanger

Cited by 138 publications

References 8 publications

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

Adsorption of heavy metals by activated carbon synthesized from solid wastes

Estudo da adsorção de surfactante catiônico em uma matriz inorgânica preparada via óxido de nióbio

Contact Info

Product

Resources

About