The Influence Factor of Removal Humic Acid from Wastewater Using Cucurbiturils

Abstract:

Adsorption of three different source humic acid (HAⅠ:shaihai JuFeng Technology Co., Ltd,china; HAⅡ:Sigma,American; HAⅢ:Lingshi hope preparation plant,Japan) in wastewater by Cucurbiturils was explored. The factors of effect of the removal rate of HA, such as amount of initial adsorbent,HA concentration, and pH values were investigated. The results of adsorption show that:the maximum capacity of HAⅠ,HAⅡ,HAⅢ at equilibrium (Q_e) and percentage of adsor-ption (η/%) are 9.88 mg·g^-1(99.59%), 8.22 mg·g^-1(99.84%),8.19 mg·g^-1 (99.39%), respectively, when HA concentration, temperature, pH value and fixed adsorbent dose are 10 mg·L^-1, 298 K, 6.5 and 2.4g·L^-1; Adsorption amount of HA over cucurbiturils decreased with the increasing of solution pH,and increased with increasing of cation concentration;Adsorption amount of HA on cucurbiturils after four successive adsorption regeneration cycles was decreased from16.29mg·g^-1 to 11.45mg·g^-1. In conclusion,we found that the Cucurbiturils were significantly effective for the removal of HA and can be recycled from wastewater.

• Periodical: Advanced Materials Research (Volume 413)
• Pages: 217-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.413.217
• Online since: December 2011
• Authors: Qin Yang, Yong Li Yang, Wen Dong Wang, Man Ge, Dan Li
• Keywords: Adsorption, Cucurbiturils, Humic Acid (HA), Regeneration, Removal, Wastewater

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