Performance of Liquids from Slow Pyrolysis and Hydrothermal Carbonization in Plant Protection

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Hagner , M , Tiilikkala , K , Lindqvist , I , Niemelä , K , Wikberg , H , Källi , A & Rasa , K 2020 , ' Performance of Liquids from Slow Pyrolysis and Hydrothermal Carbonization in Plant Protection ' , Waste and Biomass Valorization , vol. 11 , no. 3 , pp. 1005-1016 . https://doi.org/10.1007/s12649-018-00545-1

Title: Performance of Liquids from Slow Pyrolysis and Hydrothermal Carbonization in Plant Protection
Author: Hagner, Marleena; Tiilikkala, Kari; Lindqvist, Isa; Niemelä, Klaus; Wikberg, Hanne; Källi, Anssi; Rasa, Kimmo
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
Date: 2020-03
Language: eng
Number of pages: 12
Belongs to series: Waste and Biomass Valorization
ISSN: 1877-265X
URI: http://hdl.handle.net/10138/312170
Abstract: The feasibility of thermochemical biomass conversion technologies can be improved if value-added applications for all fractions can be developed. One of such approaches is the use of liquid by-products from slow pyrolysis and hydrothermal carbonization (HTC) in plant protection. Liquids produced from slow pyrolysis of pine bark, pine forest residues, wheat straw, and willow, and from hydrothermal carbonization of willow, were analyzed in this study. In particular, potential active compounds were analyzed, covering the main volatile, simple organic compounds and numerous phenolic substances. Effectivity tests of the liquids as pest repellent (Arianta arbustorum), herbicide (Brassica rapa), and insecticide (Rhopalosiphum padi) indicated that slow pyrolysis liquid from willow was the most effective pesticide, followed by the liquid from wheat, bark, and forest residues. HTC liquid did not show any pesticidal activity due to low concentration of organic compounds. High content of acetic acid and other carboxylic acids, and the presence of dozens of different phenolic compounds seem to be the main reason for the higher pesticidal activity of willow-derived pyrolysis liquid. Temperature-separated slow pyrolysis liquids proved to be suitable to be used as pesticides. Consequently there is possibility to improve the feasibility of thermochemical biomass conversion technologies remarkably by developing the liquid factions to value-added pesticides. [GRAPHICS] .
Subject: ACID
CHEMISTRY
Hydrothermal carbonization
OIL
Pine
Plant protection
Pyrolysis liquids
RECOVERY
Slow pyrolysis
WOOD VINEGAR
Wheat straw
Willow
221 Nano-technology
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