Simultaneous biosorption of methylene blue and trivalent chromium onto olive stone

M. C. Trujillo*, M. A. Martín-Lara, A. B. Albadarin, C. Mangwandi, M. Calero

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this work, olive stone (OS) was utilized to investigate its capacity as biosorbent for methylene blue (MB) and Cr(III), which are usually present in textile industry effluents. Equilibrium and kinetic experiments were performed in batch experiments. The biosorption process followed pseudo-second-order kinetics. The equilibrium data were fitted with several models, but Langmuir and Sips models best reproduced the experimental results. Maximum biosorption capacities were 3.296 mg/g (0.0116 mmol/g) and 4.990 mg/g (0.0960 mmol/g) for MB and Cr(III), respectively. Several operation variables, such as
biosorbent mass, flow rate, and initial concentration on the removal of dye and metal, were evaluated in column system. The removal efficiency improved as OS mass increased and decreased when flow rate and initial concentration increased. Also, MB uptake was substantially decreased by increasing the initial concentration of Cr(III), ranging from 6.09 to 2.75 mg/g. These results show that the presence of Cr(III) significantly modifies the biosorption capacity of MB by the OS. These results suggest that OS is a potential low-cost food industry waste for textile industry wastewater treatment.
Original languageEnglish
Pages (from-to)17400-17410
Number of pages11
JournalDesalination and Water Treatment
Volume57
Issue number37
Early online date01 Sep 2015
DOIs
Publication statusPublished - 2016

Keywords

  • Biosorption
  • Chromium III
  • Methylene blue
  • Olive stone
  • Wastewater treatment

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Environmental Science(all)
  • Chemistry(all)

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