Sorption of wastewater containing reactive red X-3B on inorgano-organo pillared bentonite.
Bentonite is a kind of natural clay with good exchanging ability. By exchanging its interlamellar cations with various soluble cations, such as quaternary ammonium cations and inorganic metal ions, the properties of natural bentonite can be greatly improved. In this study, hexadecyltrimethylammonium bromide (HDTMA), CaCl(2), MgCl(2), FeCl(3), AlCl(3) were used as organic and inorganic pillared materials respectively to produce several kinds of Ca-, Mg-, Fe-, Al-organo pillared bentonites. Sorption of reactive red X-3B on them was studied to determine their potential application as sorbents in wastewater treatment. The results showed that these pillared bentonites had much improved sorption properties, and that the dye solutions' pH value had some effect on the performance of these inorgano-organo pillared bentonites. Isotherms of reactive X-3B on these pillared bentonites suggested a Langmuir-type sorption mechanism.
Zeng
Xiu-qiong
XQ
Department of Chemistry, Zhejiang University, Hangzhou 310028, China. xiuqiong_zeng@yahoo.com.cn
D000077410:Aluminum Chloride; D017607:Aluminum Compounds / Q000737:chemistry; D001546:Bentonite / Q000737:chemistry*; D002122:Calcium Chloride / Q000737:chemistry; D002412:Cations; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D015636:Magnesium Chloride / Q000737:chemistry; D009281:Naphthalenes / Q000737:chemistry*; D014227:Triazines / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
D017607:Aluminum Compounds; D002412:Cations; D002593:Cetrimonium Compounds; D002712:Chlorides; D004396:Coloring Agents; D005290:Ferric Compounds; D009281:Naphthalenes; D014227:Triazines; D014874:Water Pollutants, Chemical; C463839:reactive red 3B; D015636:Magnesium Chloride; D001546:Bentonite; D000077410:Aluminum Chloride; D002122:Calcium Chloride; C024555:ferric chloride; D000077286:Cetrimonium