Adsorption/desorption behavior between a novel amphoteric granular lignin adsorbent and reactive red K-3B in aqueous solutions  被引量:15

Adsorption/desorption behavior between a novel amphoteric granular lignin adsorbent and reactive red K-3B in aqueous solutions

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作  者:LIUMing-hua HONGShu-nan HUANGJian-hui ZHANHuai-yu 

机构地区:[1]CollegeofEnvironmentandResources,FuzhouUniversity,Fuzhou350002,China. [2]StateKeylaboratoryofPulp&PaperEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China)

出  处:《Journal of Environmental Sciences》2005年第2期212-214,共3页环境科学学报(英文版)

基  金:TheNationalNaturalScienceFoundationofChina(No.50 2 0 30 0 3) ;theInnovationFundforYoungQualifiedScientistsandTechniciansofFujianProvince,China(No.2 0 0 2J0 02)andtheDevelopmentFundofScience&TechnologyofFuzhouUniversity(2 0 0 3 XQ 2 8)

摘  要:A novel amphoteric granular lignin adsorbent(AGLA) was prepared using magnesium lignosulfonate as a raw material which was provided by a straw sulfite pulp mill in Guangdong Province, China. A reactive dye(red K-3B) was used as an adsorbate to investigate the adsorption behavior by static and mobile ways. The removal of reactive red K-3B was found to be initially pH and concentration dependent. Moreover, an increase of solution temperature ranging from 5℃ to 60℃ helped to enhance the rate of intraparticle diffusion of adsorbate and changes in the size of the pores of the adsorbent and thus to reduce the adsorption time. The total breakthrough adsorption capacity was 531 mg/g, and the saturated adsorption capacity was 560 mg/g, which prevailed over the activated carbons evidently. The reactive red K-3B adsorbed on AGLA could be recovered with a mixture of alcohol, NaCl and HCl aqueous solutions. The recovery percentage could reach 92.4%.A novel amphoteric granular lignin adsorbent(AGLA) was prepared using magnesium lignosulfonate as a raw material which was provided by a straw sulfite pulp mill in Guangdong Province, China. A reactive dye(red K-3B) was used as an adsorbate to investigate the adsorption behavior by static and mobile ways. The removal of reactive red K-3B was found to be initially pH and concentration dependent. Moreover, an increase of solution temperature ranging from 5℃ to 60℃ helped to enhance the rate of intraparticle diffusion of adsorbate and changes in the size of the pores of the adsorbent and thus to reduce the adsorption time. The total breakthrough adsorption capacity was 531 mg/g, and the saturated adsorption capacity was 560 mg/g, which prevailed over the activated carbons evidently. The reactive red K-3B adsorbed on AGLA could be recovered with a mixture of alcohol, NaCl and HCl aqueous solutions. The recovery percentage could reach 92.4%.

关 键 词:LIGNIN AMPHOTERIC granular adsorbent adsorption desorption dying effluent 

分 类 号:X703[环境科学与工程—环境工程]

 

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