Adsorption properties of Congo Red from aqueous solution onto surfactant-modified montmorillonite

Journal of Hazardous Materials
Li Wang, Aiqin Wang

Abstract

A series of surfactant-modified montmorillonites (MMT) were prepared using octyltrimethylammonium bromide (OTAB), dodecyltrimethylammonium bromide (DTAB), cetyltrimethylammonium bromide (CTAB) and stearyltrimethylammonium bromide (STAB), and the organification of MMT was proved by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron micrographic (SEM) and transmission electron microscope (TEM). The adsorption of Congo Red (CR) anionic dye from aqueous solution onto surfactant-modified MMT was carried out. Compared with MMT, the adsorption capacity of surfactant-modified MMT for CR was greatly enhanced and MMT modified with CTAB (2.0 CEC) exhibited the higher adsorption capacity. The effects of pH value of the dye solution, adsorption temperature, adsorption time and the initial dye concentration on the adsorption capacity of CR on CTAB-MMT have been investigated. The results showed that the adsorption kinetic of CR on CTAB-MMT could be best described by the pseudo-second-order model and that the adsorption isotherm of CR was in good agreement with the Langmuir equation. The IR spectra and SEM analysis also revealed that the adsorption of CTAB-MMT was a chemical adsorption process between CT...Continue Reading

References

Dec 1, 1981·Journal of Applied Toxicology : JAT·A R GregoryP Kluge
Mar 31, 2004·Journal of Colloid and Interface Science·Cheng-Cai WangFu-Chuang Huang
May 18, 2004·Journal of Colloid and Interface Science·Bilal Acemioğlu
Nov 18, 2005·Journal of Colloid and Interface Science·A H GemeayA B Zaki
Dec 13, 2005·Journal of Hazardous Materials·Shengling Sun, Aiqin Wang
Mar 1, 1995·Environmental Science & Technology·J A Smith, A Galan

❮ Previous
Next ❯

Citations

Mar 22, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Qingqing WangQufu Wei
Mar 12, 2016·Ultrasonics Sonochemistry·Ozkan AcisliMohsen Sheydaei
Feb 13, 2016·Journal of Environmental Management·Gautam Kumar SarmaKrishna G Bhattacharyya
Jan 19, 2010·Journal of Hazardous Materials·Vipasiri VimonsesChristopher W K Chow
Apr 27, 2013·Carbohydrate Polymers·Ali Sadeghian MaryanMahnaz Mahmoudi Rad
Jun 4, 2016·Environmental Science and Pollution Research International·Nirav P RavalNisha K Shah
Apr 29, 2014·International Journal of Biological Macromolecules·Jie WuHongyan Ding
Apr 28, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·N Contreras OlivaresM Solache-Ríos
Sep 13, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xiaoyan SunDechang Zeng
Jul 7, 2018·International Journal of Environmental Research and Public Health·Ahmad AlhujailyFuying Ma
Apr 8, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Sovan Lal BanerjeeNikhil K Singha
Aug 23, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Fethi KooliRawan Al-Faze
Feb 24, 2010·Journal of Environmental Quality·Rabih SaadJalal Hawari
Feb 8, 2021·Environmental Science and Pollution Research International·Evans DoviRunping Han
Dec 24, 2018·Journal of Colloid and Interface Science·Jing OuyangHuaming Yang

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.