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Slow pyrolysis enhances the recovery and reuse of phosphorus and reduces metal leaching from biosolids.
Roberts, David A; Cole, Andrew J; Whelan, Anna; de Nys, Rocky; Paul, Nicholas A.
Afiliación
  • Roberts DA; MACRO - the Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia. Electronic address: david.roberts1@jcu.edu.au.
  • Cole AJ; MACRO - the Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
  • Whelan A; Wastewater Operations, Townsville Water and Waste, QLD 4811, Australia.
  • de Nys R; MACRO - the Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
  • Paul NA; MACRO - the Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; Present address: Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia.
Waste Manag ; 64: 133-139, 2017 Jun.
Article en En | MEDLINE | ID: mdl-28318964
ABSTRACT
In this study, biochar is produced from biosolids with and without alum at a range of temperatures and simulated oxidative aging of the biochars is conducted to quantify the long-term leaching of P and metals. While biosolids containing alum had negligible amounts of plant-available P, after pyrolysis >90% of the P became immediately available for plant growth. When biosolids with no alum were converted into biochar there was a small increase in the availability of P but a larger pool was available after oxidation. Both of the biosolids leached significant amounts of metals after oxidation. In contrast, the biochars had a very low available metal content and this did not increase with oxidation, demonstrating a stable metal content. Pyrolysis is an effective waste management strategy for biosolids that can simultaneously reduce the leaching of metals and increase the efficiency of recycling of P for beneficial re-use.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Administración de Residuos / Metales Idioma: En Revista: Waste Manag Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2017 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Administración de Residuos / Metales Idioma: En Revista: Waste Manag Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2017 Tipo del documento: Article