{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T04:21:06Z","timestamp":1785817266035,"version":"3.56.0"},"reference-count":54,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T00:00:00Z","timestamp":1683504000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["32001211"],"award-info":[{"award-number":["32001211"]}]},{"name":"National Natural Science Foundation of China","award":["19KJB180010"],"award-info":[{"award-number":["19KJB180010"]}]},{"name":"National Natural Science Foundation of China","award":["21KJA0005"],"award-info":[{"award-number":["21KJA0005"]}]},{"name":"Natural Science Foundation for Higher Education Institutions of Jiangsu Province","award":["32001211"],"award-info":[{"award-number":["32001211"]}]},{"name":"Natural Science Foundation for Higher Education Institutions of Jiangsu Province","award":["19KJB180010"],"award-info":[{"award-number":["19KJB180010"]}]},{"name":"Natural Science Foundation for Higher Education Institutions of Jiangsu Province","award":["21KJA0005"],"award-info":[{"award-number":["21KJA0005"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Carbon sequestration is the primary function of biochar. Hence, it is necessary to design biochar with high carbon (C) retention and low C loss. In this study, three P compounds, including KH2PO4, Ca(H2PO4)2, and NH4H2PO4, were premixed with corn stalk (1:4, w\/w), aiming to produce biochars (CSB+K, CSB+Ca, and CSB+N) with high C sequestration and slow release of P at three temperatures (300, 500, and 700 \u00b0C). The addition of all P sources obviously increased C retention, with the order of NH4H2PO4 (65.6\u201383.5%) &gt; Ca(H2PO4)2 (60.4\u201378.2%) &gt; KH2PO4 (50.1\u201376.1%), compared with the pristine biochar (47.8\u201373.6%). The addition of Ca(H2PO4)2 and KH2PO4 led to an increase in aromaticity and graphitization, as evidenced by H\/C, FTIR, Raman and XPS analysis, whereas an opposite result occurred on CSB+N. Furthermore, all three phosphates reduced C loss of biochars with H2O2 oxidation, and CSB+Ca showed the best effect. Ca(H2PO4)2 and KH2PO4 pretreated biochars had higher resistance to K2Cr2O7 oxidation and thermal treatment. In contrast, the C loss of NH4H2PO4-added biochar at 500 and 700 \u00b0C with K2Cr2O7 oxidation was increased by 54% and 36%, respectively. During the pyrolysis process, Ca(H2PO4)2 was transformed into insoluble Ca2P2O7, leading to the lowest P release rate of CSB+Ca. This study indicates that co-pyrolysis of corn stalk and Ca(H2PO4)2 is optimal for increasing C retention, enhancing C stability and improving slow-release performance of P regardless of pyrolysis temperature.<\/jats:p>","DOI":"10.3390\/molecules28093950","type":"journal-article","created":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T03:34:53Z","timestamp":1683516893000},"page":"3950","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Effect of Different Phosphates on Pyrolysis Temperature-Dependent Carbon Sequestration and Phosphorus Release Performance in Biochar"],"prefix":"10.3390","volume":"28","author":[{"given":"Tianxia","family":"Bai","sequence":"first","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"},{"name":"School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenge","family":"Ma","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenhui","family":"Li","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinling","family":"Jiang","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiamin","family":"Chen","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Cao","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenjie","family":"Yang","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dan","family":"Dong","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tingwu","family":"Liu","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yonggang","family":"Xu","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai\u2019an 223300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"110691","DOI":"10.1016\/j.rser.2020.110691","article-title":"Biomass for a sustainable bioeconomy: An overview of world biomass production and utilization","volume":"139","author":"Antar","year":"2021","journal-title":"Renew. 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