Hydrothermal carbonization aqueous phase promotes nutrient retention and humic substance formation during aerobic composting of chicken manure

Haijun Sun; Sen Chen; Ning Zhu; Paramsothy Jeyakumar; Jixiang Wang; Wenping Xie; Yanfang Feng

doi:10.1016/j.biortech.2023.129418

Hydrothermal carbonization aqueous phase promotes nutrient retention and humic substance formation during aerobic composting of chicken manure

Bioresour Technol. 2023 Oct:385:129418. doi: 10.1016/j.biortech.2023.129418. Epub 2023 Jun 28.

Authors

Haijun Sun¹, Sen Chen², Ning Zhu³, Paramsothy Jeyakumar⁴, Jixiang Wang³, Wenping Xie⁵, Yanfang Feng³

Affiliations

¹ Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
² Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
³ Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
⁴ Environmental Sciences, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand.
⁵ State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, China. Electronic address: wpxie@issas.ac.cn.

PMID: 37390933
DOI: 10.1016/j.biortech.2023.129418

Abstract

The aqueous phase (AP) of hydrothermal carbonization is rich in humic substances (HSs), which could influence the poultry manure composting process and the product quality. Here, raw AP and its modified product (MAP) with different nitrogen (N) contents were added into chicken manure composting at low (5%) or high (10%) rate. Results showed that all APs addition decreased the temperature and pH but AP-10% increased total N, HSs, and humic acid (HA) of compost by 12%, 18% and 27%, respectively. MAP applications increased the total phosphorus by 8-9% and MAP-10% enhanced the total potussium content by 20%. Additionally, both AP and MAP additions increased the contents of three major components of dissolved organic matter by 20-64%. In conclusion, both AP and MAP can generally improve the chicken manure compost quality, which provides a new idea for the recycling of APs derived from agro-forestry wastes during hydrothermal carbonization.

Keywords: Biomass recycle; Compost fertility; DOM; Humic acid; Poultry manure.

MeSH terms

Animals
Chickens
Composting*
Humic Substances* / analysis
Manure
Nutrients
Soil / chemistry

Substances

Humic Substances
Soil
Manure