首页|Ultra-high specific surface area activated carbon from Taihu cyanobacteria via KOH activation for enhanced methylene blue adsorption
Ultra-high specific surface area activated carbon from Taihu cyanobacteria via KOH activation for enhanced methylene blue adsorption
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Cyanobacteria-based activated carbon(CBAC)was successfully prepared by pyrolysis-activation of Taihu cyanobacteria.When the impregnation ratio and activated temperature were 2 and 800 ℃,respectively,the optimal CBACs possessed an ultra-high specific surface(2178.90 m2·g-1)and plenty of micro-and meso-pores,as well as a high pore volume(1.01 cm3·g-1).Ascribed to ultra-high surface area,π-πinteraction,electrostatic interaction,as well as hydrogen-bonding interactions,the CBACs displayed huge superiority in efficient dye removal.The saturated methylene blue adsorption capacity by CBACs could be as high as 1143.4 mg g-1,superior to that of other reported biomass-activated carbons.The adsorption was endothermic and modeled well by the pseudo-second-order kinetic,intra-particle diffusion,and Langmuir models.This work presented the effectiveness of Taihu cyanobacteria adsorbent ascribed to its super large specific surface area and high adsorption ability.
Yifang Mi、Wenqiang Wang、Sen Zhang、Yalong Guo、Yufeng Zhao、Guojin Sun、Zhihai Cao
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Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles,Ministry of Education,Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing,Zhejiang Sci-Tech University,Hangzhou 310018,China
Key Laboratory for Technology in Rural Water Management of Zhejiang Province,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China
Key Research &Development program of Zhejiang Province国家重点研发计划浙江省自然科学基金
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