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The Preparation of Biochar Particles from Sludge and Corncobs and Its Pb2+ Adsorption Properties

  • Yajun Hong
  • Zuxin Xu
  • Chenglian FengEmail author
  • Dayong XuEmail author
  • Fengchang Wu
Article

Abstract

In the present study, biochar particles (BPs) produced by the co-pyrolysis of sewage sludge and corncobs at temperatures of 300, 500, and 700°C were characterized. The Pb2+ adsorption properties and the heavy metal leaching toxicity rates of the BPs were investigated. It was found that the adsorption kinetics of the Pb2+ can be accurately described by a pseudo-second-order model, and the equilibrium adsorption data were well represented by both the Langmuir and the Freundilich Equations. The toxicity characteristic leaching procedure (TCLP) results indicated that the leaching concentrations of all the heavy metals were below the set limit of China’s national standard (Identification Standard for Hazardous Waste Extraction Toxicity Identification, China National Standard, GB 5085.3-2007). The results of this study can successfully provide scientific support for future corncob treatment and sludge pollution control.

Keywords

Sewage sludge Corncobs Biochar particles Characterization Adsorption experiments TCLP 

Notes

Acknowledgements

This research study was financially supported by the National Natural Science Foundation of China (51408001); University Natural Science Foundation of Anhui Province (KJ2018A0103); and the Anhui Polytechnic University "Young and Middle-Aged Top Talent" Training Program.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

128_2019_2736_MOESM1_ESM.docx (25 kb)
Electronic supplementary material 1 (DOCX 25 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Environmental Science and EngineeringTongji UniversityShanghaiChina
  2. 2.State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijingChina
  3. 3.College of Biological and Chemical EngineeringAnhui Polytechnic UniversityWuhuChina

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