Management of biosolids-derived hydrochar (Sewchar): Effect on plant germination, and farmers' acceptance

Journal of Environmental Management
Tatiane Medeiros MeloJörg Rinklebe

Abstract

Hydrothermal carbonization is a promising approach of biosolids management and its utilization as a soil amendment. This study evaluated the physical and chemical properties of hydrothermally converted biosolids (Sewchar) and its effect as a potential soil amendment on the growth of rice, beans, and radish. The germination experiment was conducted in a greenhouse in a randomized design using five Sewchar doses (0, 10, 20, 40 and 60 Mg ha-1). The results showed that hydrothermal carbonization influences the physicochemical properties of the biosolids, such as promoting pore structure and trace elements below the threshold values for use in agriculture. The spectroscopic techniques demonstrated higher presence of oxygen-containing functional groups (e.g., CO/OH) on surfaces of Sewchar than that of biosolids. The Sewchar doses of 10 Mg ha-1 and 60 Mg ha-1 yielded the highest dry biomass for beans and rice respectively. Increasing Sewchar doses negatively correlated with radish dry biomass, as indicated by linear regression equation fitting (p < 0.05). Thus, biomass responses to Sewchar application into the soil varied with Sewchar dose and type of plant. For a proper environmental management, a survey was conducted to assess farme...Continue Reading

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Jun 18, 2017·Environmental Geochemistry and Health·Tatiane Medeiros MeloJörg Rinklebe
Jun 24, 2017·International Journal of Environmental Research and Public Health·Dan ZhouXianping Luo
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Nov 23, 2017·The Science of the Total Environment·David O'ConnorDeyi Hou
May 14, 2018·Chemosphere·Tatiane Medeiros MeloJörg Rinklebe

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Citations

Nov 2, 2019·Environmental Geochemistry and Health·Shaopan XiaHailong Wang
Jun 25, 2020·Journal of Environmental Management·Vivian MauAmit Gross
Aug 31, 2021·The Science of the Total Environment·Ying ZhaoFan Yang
Oct 9, 2021·The Science of the Total Environment·Loreto SuárezTeresa A Centeno
Jan 10, 2022·The Science of the Total Environment·Xiaodong YangDeyi Hou

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