Journal article
Changes of nutrients and potentially toxic elements during hydrothermal carbonization of pig manure
Chemosphere, Vol.243, pp.1-7
03/2020
PMID: 31995863
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Abstract
The effects of reaction temperature, residence time, sulfuric acid and potassium hydroxide on the total concentration and speciation of N and P, potentially toxic elements (salts and metal elements) of pig manure during its hydrothermal carbonization (HTC) were investigated. Concentrations of Cl, K, Na and Mg in the hydrochars were much lower but total N, P and nitrate-nitrogen (NO3−-N) contents were significantly higher than in untreated pig manure. The acid-extractable fractions of Cu and Zn in hydrochars were 0.03–0.63 and 0.17–0.66 times lower than those in pig manure and decreased significantly with increasing reaction temperature. The addition of sulfuric acid (H2SO4) or potassium hydroxide (KOH) in HTC reduced the contents of P, Ca, Mg, Cl and heavy metal elements (HMEs) in hydrochars, and the removal rates of Cu and Zn were up to 55% and 59%, respectively. Overall, the rapid treatment of pig manure by HTC reduced the harm of salts and HMEs, and effectively recovered the nutrients in pig manure. The HTC under alkaline conditions was desirable for optimizing the main elemental composition of the hydrochars.
Details
- Title
- Changes of nutrients and potentially toxic elements during hydrothermal carbonization of pig manure
- Creators
- Chengfang Song - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, ChinaWenqiao Yuan - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, ChinaShengdao Shan - Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou, 310023, ChinaQi Ma - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, ChinaHaibo Zhang - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, ChinaXudong Wang - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, ChinaNabeel Khan Niazi - University of Agriculture FaisalabadHailong Wang - Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
- Publication Details
- Chemosphere, Vol.243, pp.1-7
- Publisher
- Elsevier Ltd
- Grant note
- This study was funded by the National Natural Science Foundation of China (41501341, 31601271, 21876027, 21577131, 41371313), Zhejiang Province Key Research and Development Plan (2017C03010), Zhejiang Province Natural Science Foundation (LY16D010011, LY16D010010, LZ19D010001), and the 111 Project (D18008).
- Identifiers
- 991012951094002368
- Copyright
- © 2019 Elsevier Ltd. All rights reserved.
- Academic Unit
- School of Environment, Science and Engineering; Science; Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article