Adsorption of direct green B on mixed hydroxy-Fe-Al pillared montmorillonite with large basal spacing.
Through cation-exchanging of montmorillonite, mixed hydroxy Fe-Al-pillared montmorillonites with large basal spacing were synthesized. The application of these mixed hydroxy Fe-Al-pillared montmorillonites as adsorbents in the areas of environmental protection and pollution control was investigated. Adsorption of Direct Green B, an organic dye, on OH--Fe--, OH--Al--, OH--Fe--Al-- pillared montmorillonites was studied. Results showed that these pillared montmorillonites had much better adsorption properties than traditional Na-organo-montmorillonite. It was also found that pH of the solutions had great effect on the performance of these hydroxy-metal pillared montmorillonites in treating the wastewater containing Direct Green B.
Zeng
Xiu-qiong
XQ
Department of Chemistry, Zhejiang University, Hangzhou 310028, China. xiuqiong_zeng@yahoo.com.cn
Liu
Wei-ping
WP
D000327:Adsorption; D017607:Aluminum Compounds / Q000737:chemistry; D001546:Bentonite / Q000138:chemical synthesis* / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D058085:Iron Compounds / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D018508:Water Purification / Q000379:methods*; D014961:X-Ray Diffraction
D017607:Aluminum Compounds; D004396:Coloring Agents; D058085:Iron Compounds; D001546:Bentonite