2001
DOI: 10.1016/s0043-1354(01)00071-9
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Sorption of lead ions on diatomite and manganese oxides modified diatomite

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Cited by 298 publications
(140 citation statements)
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“…The diffraction spectrogram indicates that the diatomite consists mainly of silica ( SiO 2 ) and CaCO 3 with smaller amonts of Al 2 O 3 ,Fe 2 O 3 ,K 2 O,MgO,Na 2 O,TiO 2 ,and MnO. amorphous band, represented the spectrum of raw diatomite DB ( black color ) shown in Fig.11 is probably due to the glass formation of SiO 2 as the inorganic base accompanied quartz, calcite 15 . For Quartz ( the peaks at 2 theta= 14.5°-17.5°-19.5°-21°-23°-26.5°-36°-39.5°) and calcite ( peaks of 2 theta = 29.5° to 47°-47.5°-48.5°-57.5°-60°-64.5°-68.5°-77.5° ) are the characteristic peaks of the raw diatomite 16,17 .…”
Section: Characterizations Of (Dbdmf1dmf2dmf3 and Dmf4) X-ray Difmentioning
confidence: 98%
“…The diffraction spectrogram indicates that the diatomite consists mainly of silica ( SiO 2 ) and CaCO 3 with smaller amonts of Al 2 O 3 ,Fe 2 O 3 ,K 2 O,MgO,Na 2 O,TiO 2 ,and MnO. amorphous band, represented the spectrum of raw diatomite DB ( black color ) shown in Fig.11 is probably due to the glass formation of SiO 2 as the inorganic base accompanied quartz, calcite 15 . For Quartz ( the peaks at 2 theta= 14.5°-17.5°-19.5°-21°-23°-26.5°-36°-39.5°) and calcite ( peaks of 2 theta = 29.5° to 47°-47.5°-48.5°-57.5°-60°-64.5°-68.5°-77.5° ) are the characteristic peaks of the raw diatomite 16,17 .…”
Section: Characterizations Of (Dbdmf1dmf2dmf3 and Dmf4) X-ray Difmentioning
confidence: 98%
“…The statistical analysis using ANOVA (p<0.05) demonstrates no significant difference for C18 and diatomaceous earth, even though both materials were revealed to be good solid supports in the dispersion step. It is explained by the fact that these materials may selectively interact with the analytical interference due to their particle size, high surface area, and porous structure as [42] for C18 and by Al-Degs et al [43] and Tsai et al [44] for diatomaceous earth.…”
Section: Choice Of Solid Supportmentioning
confidence: 99%
“…Na literatura encontram-se diversos tipos de estudos com aluminossilicatos usados como adsorventes de metais pesados. Zeólitas naturais, como a clinoptilolita, utilizada para a retirada de chumbo, cádmio e cromo 34 , terra diatomácea utilizada como adsorvente de íons chumbo 35 , bentonita que age como adsorvente também de íons chumbo 36 , kianita (Al 2 SiO 3 ) usada para adsorver metais pesados de corpos d'água 37 , argila natural estratificada (mistura de diversos argilominerais) empregada para retirar íons de cobre, zinco e níquel de esgoto 38 , esmectitas naturais usadas como adsorventes de zinco e chumbo 39 , montmorilonitas adsorvendo íons cobre 40 e íons cromo 41,42 são alguns dos diversos exemplos do emprego destes materiais como adsorventes de metais pesados. Para a otimização do processo de adsorção de metais pesados, é necessário determinar as condições limites do sistema.…”
Section: Aplicação De Aluminossilicatos Na Remoção De Metais Pesadosunclassified