Phosphorus adsorption behavior of industrial waste biomass-based adsorbent, esterified polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers in aqueous solution

Sok Kim, Yun Hwan Park, Jae Been Lee, Ho Seon Kim, Yoon E. Choi

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

This study sought to develop a highly efficient adsorbent material for phosphorus (P) removal via valorization of industrial Escherichia coli biomass waste. To ensure an easy and fast recovery after the sorption process, the E. coli biomass waste was immobilized into polysulfone matrix. Additionally, to improve P sorption capacity, the sorbent surface was coated with polyethylenimine (PEI) and further chemically modified. The P uptakes of the developed sorbent (decarboxylated PEI-modified polysulfone-biomass composite fiber, DC-PEI-PEF) were significantly affected by pH. Moreover, the maximum sorption capacity (qmax) of DC-PEI-PEF was estimated as 30.46 ± 1.09 mg/g at neutral pH, as determined by a Langmuir isotherm model. Furthermore, DC-PEI-PEF could reach sorption equilibrium within 5 min and exhibited reusability potential. The partition coefficient of the newly developed material (DC-PEI-PEF) was calculated as 0.387 mg/g⋅μM at 4 mg/L of initial P concentration and decreased as initial P concentrations increased. Therefore, DC-PEI-PEF could be suggested as a promising adsorbent for application in direct phosphorus removal from natural aquatic environments.

Original languageEnglish
Article number123217
JournalJournal of hazardous materials
Volume400
DOIs
Publication statusPublished - 2020 Dec 5

Bibliographical note

Funding Information:
This study was financially supported by the grants of National Research Foundation of Korea (Grant No.: 2018R1A6A3A11045442 and 2019R1A2C2087449 ) and OJeong Eco-Resilience Institute (OJERI) and BK21 Plus Eco-leader Education center (ELEC) of Korea university .

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

  • Adsorption
  • Escherichia coli (E. coli)
  • Phosphorus
  • Polyethylenimine (PEI)
  • Waste biomass

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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