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Study on the Adsorption Property of Direct Fast Black G Dye with Diatomite

Author: HuangNa
Tutor: WuKeMing
School: Wuhan University of Science and Technology
Course: Environmental Engineering
Keywords: Direct Fast Black G Diatomite Modified Complex
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 122
Quote: 4
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Abstract


Celite as a wastewater treatment agent preferably detersive and bleaching properties . Due to natural diatomite mostly negatively charged , and thus adsorption of negatively charged organic subject to certain restrictions . Diatomite Modified able to change the diatomite surface charge , to improve the adsorption properties of the diatomaceous earth of the negatively charged organic , expanding the scope of application of celite . Bromide hexadecyl trimethylamine (CTMAB) and four- ammonium bromide (TMAB) diatomite surface modification ; effects of ferric chloride , aluminum sulfate , and polyacrylamide respectively with Celite complex with direct fast black G decolorization effect ; dye adsorption studies of direct fast black G the diatomite surface adsorption isotherms , explore and modified diatomite and complex diatomite direct Fast black G dye trapping behavior . The results show that : in general, the effect of treatment of dye wastewater using diatomaceous earth alone decolorization rate was only 41.1% ; dye wastewater decolorization rate has been greatly improved after the the diatomite modified or mixed , . After the diatomite CTMAB and TMAB modified dye wastewater decolorization rate to 50 % to 60% , while after dye wastewater decolorization rate can reach more than 90% of the diatomite coagulant compound , diatomaceous earth , aluminum sulfate complex dosage minimum , and removal efficiency the best decolorization rate reached 94.0% . The isothermal adsorption meet the Freundlich equation . Explore diatomite adsorption mechanism of direct fast black G simulated dye wastewater . Through the analysis of the test data and the adsorption isotherm , found the main sorption performance microporous adsorption , surface complexation adsorption , electrostatic adsorption and van der Waals adsorption .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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