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Influence of Biochar from Slow Pyrolysis on Dissolved Organic Carbon and Total Dissolved Nitrogen Levels of Urban Storm-Water Runoff

  • Enrico Mancinelli
  • Edita Baltrėnaitė
  • Pranas Baltrėnas
  • Raimondas Grubliauskas
  • Eglė Marčiulaitienė
  • Giorgio Passerini
  • Mantas Pranskevičius
Article

Abstract

Biochar as a filtering media has been attracted increasing attention for applications in urban storm-water runoff (USWR) management. Up-flow percolation tests were conducted with pine bark (PB) and biochars from PB (BCPB) for evaluating changes in dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations varying with pyrolysis temperatures (i.e., 300, 450, and 700 °C) and types of USWR (i.e., roof and pathway USWR). The most suitable pyrolysis temperature for limiting DOC leaching from BCPB depends on the types of USWR. For all the adopted pyrolysis temperature, BCPB released cumulative amount of DOC up to 0.01% of the TC content in the up-flow percolation tests with pathway USWR. High-temperature (i.e., 700 °C) BCPB released lower cumulative amount of DOC (up to 0.02% of the TC content) compared to the low-temperature (< 450 °C) BCPB in the roof USWR up-flow percolation tests. As for BCPB effectiveness in carbon sequestration, the amount of carbon that is not retained in BCPB because of leaching (DOC less than 0.1% of the TC content) may be considered negligible. Of the tested BCPB, only high-temperature BCPB removed TDN for both the types of USWR with cumulative removed quantities up to 0.006 g/kg dry weight, thus representing a better option for reducing N loads to receiving water basins.

Keywords

Biochar Pine bark Dissolved organic carbon Total dissolved nitrogen Urban storm-water runoff 

Notes

Acknowledgements

This research was funded by grants (No. S-MIP-17-83 and No. S-MIP-17-20) from the Research Council of Lithuania.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018
corrected publication July 2018

Authors and Affiliations

  1. 1.Department of Industrial Engineering and Mathematical SciencesUniveristà Politecnica delle MarcheAnconaItaly
  2. 2.Institute of Environmental ProtectionVilnius Gediminas Technical UniversityVilniusLithuania

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