Novel biosorbents synthesized from fungal and bacterial biomass and their applications in the adsorption of volatile organic compounds

Zhuowei Cheng, Ke Feng, Yousheng Su, Jiexu Ye, Dongzhi Chen, Shihan Zhang, Xiaomin Zhang, Dionysios D. Dionysiou

Research output: Contribution to journalArticle

Abstract

Adsorption is an efficient and low-cost technology used to purify volatile organic compounds (VOCs). In the current study, novel microbial adsorbents were synthesized using cells of lyophilized fungi (Ophiostoma stenoceras LLC) or bacteria (Pseudomonas veronii ZW) that were modified by aminomethylation. Based on the adsorption performance and structural characterization results, the modified fungal biosorbent was the best. Its maximum adsorption capacities for ethyl acetate, α-pinene, and n-hexane were 620, 454, and 374 mg·g−1, respectively, which were much higher than those of other synthesized biosorbents. The specific surface area of the fungal biosorbent was 20 m2·g−1, and most of the components were hydrocarbon compounds and polysaccharides. The VOC adsorption process on these synthesized biosorbents was in accordance with the Langmuir isothermal model and the pseudo-first-order kinetic model, thereby suggesting that physical adsorption was the dominant mechanism. The fungal biosorbent could be used for five consecutive VOC sorption-desorption cycles without any obvious decrease in adsorption capacity.

Original languageEnglish (US)
Article number122705
JournalBioresource Technology
Volume300
DOIs
StatePublished - Mar 2020

Keywords

  • Adsorption kinetics
  • Aminomethylation modification
  • Fungal
  • Microbial biosorbents
  • VOC adsorption

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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