Fertilizer and soil conditioner value of broiler manure biochars

• DOI: 10.1007/s42773-019-00020-7
• Publication Date: 2019-08-27T13:03:01Z
• Authors: Riikka Keskinen; Jari Hyväluoma; Lauri Sohlo; Hanna Help; Kimmo Rasa
• Keywords: Chicken manure; Charcoal; Soil conditioner

Pyrolysis is an option for enhancing the sustainable management of broiler manure surpluses by producing a concentrated, hygienic char product with fertilizer and soil conditioner value. In this study, impacts pyrolysis conducted at 350, 400 450 °C on total nutrient harmful element concentrations in biochars derived from peat-bedded were examined. Emphasis was placed availability phosphorus (P). addition, pore structures these explored using X-ray microtomography image analysis. During pyrolysis, 35–50%, 40–55% 35–45% original carbon, nitrogen sulfur contents, respectively, feedstock biomass lost as volatiles. Mineral elements, including P, concentrated biochar. Although water-extractable P found to be converted less labile forms due charring, concentration effect notable increase sodium bicarbonate-extractable rendered richer comparison (7.1, 10.0, 11.1 14.8 g kg−1 produced °C, respectively). The volume micrometer-scale porosity biochar comparable that earlier wood-based biochars. biochars, structure more versatile, size distribution wider. Consequently, part too large store plant-available water, which may reduce potential improve water storage capacity.