Treatment of landfill leachate RO concentration by Iron–carbon micro–electrolysis (ICME) coupled with H2O2 with emphasis on convex optimization method

Jianyang Song, Weicheng Li, Yuyou Li, Ahmed Mosa, Hongyu Wang, Yong Jin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A combined technology between Iron-carbon micro-electrolysis (ICME) and H2O2 using scrap iron and granular active carbon was extensively investigated and optimized (three main independent parameters chosen) for chemical oxygen demand (COD) removal of landfill leachate reverse osmosis (RO) concentration by batch experiments. A regression quadratic equation was developed to model the outcome using central composite design (CCD) coupled with response surface methodology. A global optimization method–the convex optimization was applied to determine the optimal parameters. Under optimal parameters determined as C/Fe (Surface area) of 717143.8, H2O2 concentration of 1687.6 mg/L and pH of 3.8, the corresponding COD removal efficiency was up to 86.9%. Consequently, the COD in the effluent was less than 300 mg/L. The treated water can meet the level B standards of Wastewater Quality Standards for Discharge to Municipal Sewers (CJ 343—2010).

Original languageEnglish
Pages (from-to)49-55
Number of pages7
JournalEnvironmental Pollutants and Bioavailability
Volume31
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • convex optimization method
  • Fenton process
  • ICME
  • Landfill leachate
  • response surface methodology

ASJC Scopus subject areas

  • Chemical Health and Safety
  • Health, Toxicology and Mutagenesis
  • Toxicology

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