A potential Mg-enriched biochar fertilizer: Excellent slow-release performance and release mechanism of nutrients

doi:10.1016/j.scitotenv.2020.144454

HFCAS OpenIR

	A potential Mg-enriched biochar fertilizer: Excellent slow-release performance and release mechanism of nutrients
	Luo, Weichen 1,2; Qian, Ling 1,2; Liu, Weiwei 3; Zhang, Xin1,2 ; Wang, Qi 1,2; Jiang, Haiyang 1,2; Cheng, Beijiu 1,2; Ma, Huan 1,2; Wu, Zhengyan4,5
	2021-05-10
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
通讯作者	Ma, Huan(huanma2012@126.com)
摘要	A potential Mg-enriched biochar fertilizer (MBF) was successfully synthesized via pyrolysis of MgCl2-enriched corn straw and high-efficiency reclaiming of N- and P-containing nutrients from biogas effluent. Mathematical modeling and column leaching method demonstrated that the MBF exhibited excellent slow-release performances of total P and N with sustainable release rates. Leaching experiment indicated that the final accumulative release ratios of N and P from MBF were 7 times and 6 times lower than those of chemical fertilizer (CF), respectively. The mechanism study reveals that the P-release performance of MBF was not only controlled by the low solubility of Mg-P precipitates formed on the biochar surface, but also enhanced by the 'P-trap' effect of MgO through re-precipitation process of PO43-. Meanwhile, the N-release behavior of MBF was dominated by the multi-effects of biochar carrier, including the confinement effect and electrostatic attraction for NH4+, as well as the hydrogen bonds and pore-filling effect for N-containing organic matter. In addition, MBF significantly promoted the corn growth and enhanced the nutrient uptake efficiency of corn. These results suggested that MBF may therefore have promising potential in sustainable agriculture application with multiple environmental benefits. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Slow release kinetics Release mechanism Biochar-based fertilizer Magnesium
DOI	10.1016/j.scitotenv.2020.144454
收录类别	SCI
语种	英语
资助项目	Science and Technology Major Project of Anhui Province[17030701029] ; Natural Science Foundation of Higher Education Institutes of Anhui Province, China[KJ2019A0180]
项目资助者	Science and Technology Major Project of Anhui Province ; Natural Science Foundation of Higher Education Institutes of Anhui Province, China
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000625384700036
出版者	ELSEVIER
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/121126
专题	中国科学院合肥物质科学研究院
通讯作者	Ma, Huan
作者单位	1.Anhui Agr Univ, Sch Life Sci, 130 Changjiang West Rd, Hefei 230036, Anhui, Peoples R China 2.Anhui Agr Univ, Natl Engn Lab Crop Stress Resistance Breeding, 130 Changjiang West Rd, Hefei 230036, Anhui, Peoples R China 3.Anhui Agr Univ, Sch Engn, 130 Changjiang West Rd, Hefei 230036, Anhui, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab High Magnet Field & Ion Beam Phys Biol, 350 Shushanhu Rd, Hefei 230031, Anhui, Peoples R China 5.Chinese Acad Sci, Key Lab Environm Toxicol & Pollut Control Technol, Hefei Inst Phys Sci, 350 Shushanhu Rd, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Luo, Weichen,Qian, Ling,Liu, Weiwei,et al. A potential Mg-enriched biochar fertilizer: Excellent slow-release performance and release mechanism of nutrients[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,768.
APA	Luo, Weichen.,Qian, Ling.,Liu, Weiwei.,Zhang, Xin.,Wang, Qi.,...&Wu, Zhengyan.(2021).A potential Mg-enriched biochar fertilizer: Excellent slow-release performance and release mechanism of nutrients.SCIENCE OF THE TOTAL ENVIRONMENT,768.
MLA	Luo, Weichen,et al."A potential Mg-enriched biochar fertilizer: Excellent slow-release performance and release mechanism of nutrients".SCIENCE OF THE TOTAL ENVIRONMENT 768(2021).