Removal of soluble microbial products and dyes using heavy metal wastes decorated on eggshell

Ting Yang Lin, Wai Siong Chai, Shu Jen Chen, Jeng Ywan Shih, Apurav Krishna Koyande, Bing Lan Liu, Yu Kaung Chang

Research output: Journal PublicationArticlepeer-review

31 Citations (Scopus)


This work studied the potential of using eggshell (ES) (200–300 μm) waste as adsorbent for sequential removal of heavy metals, soluble microbial products, and dye wastes. In this study, among soluble microbial products, chicken egg white (CEW) proteins were selected as simulated contaminants. ES was applied to capture heavy metal ions (e.g., Cu2+ and Zn2+) and the formed eggshell metal (ES-M) complex was use to absorb soluble microbial products (e.g., soluble proteins), followed by subsequent removal of dyes from aqueous solutions using ES-M-CEW adsorbent. The experimental conditions for the adsorption of CEW proteins by ES-M include shaking rate, adsorption pH, isothermal and kinetic studies. The maximum protein adsorption by ES-Zn and ES-Cu were 175.67 and 153.65 mg/g, respectively. Optimal removal efficiencies of the ES-M-CEW particles for Acid Orange (AO7) and Toluidine blue (TBO) dyes were at pH 2 and 12, respectively, achieving performance of 75.38 and 114.18 mg/g, respectively. The removal of TBO dye by ES-M-CEW adsorbent was equilibrated at 5 min. The results showed that low cost and simple preparation of the modified ES particles are feasible for treating various wastewaters.

Original languageEnglish
Article number128615
Publication statusPublished - May 2021
Externally publishedYes


  • Dye
  • Metal ion
  • Powdered eggshell
  • Removal
  • Soluble microbial product

ASJC Scopus subject areas

  • Environmental Engineering
  • Chemistry (all)
  • Environmental Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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