Journal article Open Access

Valorization of the poultry litter through wet torrefaction and different activation treatments

P. J. Arauzo; P. A. Maziarka; M. P. Olszewski; R. L. Isemin; N. S. Muratova; F. Ronsse; A. Kruse


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    <subfield code="a">&lt;p&gt;The increase in volume in bio-waste is inseparable from the production of biomass derived commodities. To reduce&lt;br&gt;
the use of conventional resources, the valorization of waste streams is gaining importance, and the&lt;br&gt;
valorisation of poultry litter fits perfectly into such scheme. This study shows a possible valorization of wet&lt;br&gt;
torrefied (300 &amp;deg;C) poultry litter (WTPL) through activation and its further use as a fertilizer, and as a wastewater&lt;br&gt;
micro-pollutant absorbent. The WTPL was activated thermally, physically (CO2) and chemically (KOH) at two&lt;br&gt;
different temperatures (600 &amp;deg;C and 800 &amp;deg;C) and 30 min residence time. The properties of ACs were evaluated&lt;br&gt;
based on results of the elemental and proximate analysis, suspension pH measurement, ICP-OES, FT-IR, N2 and&lt;br&gt;
CO2 adsorption and quantity of absorbed methylene blue (MB). The yields in thermal and physical ACs were&lt;br&gt;
comparable, but much higher than ACs from chemical activation (c.a. 50% and 15% at 600 &amp;deg;C and c.a. 47% and&lt;br&gt;
6.5% at 800 &amp;deg;C). The thermal and physical ACs showed good suitability for application as a fertilizer due to their&lt;br&gt;
high macro- and micro-nutrients and low heavy metals concentration. Carbons activated with KOH proved&lt;br&gt;
their usefulness as wastewater pollutant absorbers through high MB&amp;#39;s absorption (675.8 mg/g for 600 &amp;deg;C and&lt;br&gt;
872.8 mg/g for 800 &amp;deg;C). Results state that the valorization of PL through activation is possible, and the selection&lt;br&gt;
of the activation method affects the final application of obtained material.&lt;/p&gt;</subfield>
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    <subfield code="u">Ghent University,</subfield>
    <subfield code="a">P. A. Maziarka</subfield>
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    <subfield code="u">University of Hohenheim</subfield>
    <subfield code="a">M. P. Olszewski</subfield>
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    <subfield code="u">Tambov State Technical University</subfield>
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    <subfield code="u">Tambov State Technical University</subfield>
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    <subfield code="u">Ghent University,</subfield>
    <subfield code="a">F. Ronsse</subfield>
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    <subfield code="u">University of Hohenheim</subfield>
    <subfield code="a">A. Kruse</subfield>
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    <subfield code="a">Poultry litter</subfield>
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    <subfield code="a">Wet torrefaction</subfield>
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    <subfield code="a">Activated carbon</subfield>
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    <subfield code="a">Physical activation</subfield>
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    <subfield code="a">Chemical activation</subfield>
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    <subfield code="a">10.1016/j.scitotenv.2020.139288</subfield>
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    <subfield code="a">Valorization of the poultry litter through wet torrefaction and different activation treatments</subfield>
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    <subfield code="a">"Marie Curie Actions in Horizon 2020: regional and international impact"</subfield>
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