Biochar, phosphate, and magnesium oxide in seaweed and cornstarch dregs co-composting: Enhancing organic matter degradation, humification, and nitrogen retention

doi:10.1016/j.wasman.2024.07.024

	Biochar, phosphate, and magnesium oxide in seaweed and cornstarch dregs co-composting: Enhancing organic matter degradation, humification, and nitrogen retention
	Cui, Yinjie 1; Zeng, Yang 3; Hu, Huili 1; Zhang, Yuxue 2; Wang, Derui 2; Feng, Dawei2
发表期刊	WASTE MANAGEMENT
ISSN	0956-053X
	2024-10-01
卷号	187 页码:207-217
关键词	Co-composting Seaweed Cornstarch dregs Biochar-Phosphates Humification Nitrogen conservation
DOI	10.1016/j.wasman.2024.07.024
通讯作者	Feng, Dawei([email protected])
英文摘要	Seaweed waste, abundant and rich in plant-stimulating properties, has the potential to be transformed into valuable soil amendments through proper composting and utilization management. Given its low carbon-to- nitrogen ratio, co-composting seaweed with carbon-rich cornstarch dregs is an effective strategy. However, the potential application of co-composting largely depends on the efficiency of the composting and the quality of the product. This study explores the effects of adding 10 % corn stalk biochar to a co-composting system of seaweed and cornstarch dregs, alongside varying buffering capacities of phosphates (KH2PO4 2 PO 4 and K2HPO4 & sdot;3H2O- 2 HPO 4 & sdot;3H 2 O- KH2PO4) 2 PO 4 ) and MgO, on the degradation efficiency of organic matter, nitrogen transformation, and humification. The results indicate that the addition of biochar and salts enhances the oxygen utilization rate (OUR) and cellulase activity during the thermophilic phase. Additionally, X-ray diffraction (XRD) and parallel factor analysis (PARAFAC) demonstrate more intense solubilization and transformation of proteinaceous substances, along with cellulose degradation. These processes are crucial for enhancing organic matter degradation and humification, significantly boosting degradation (with an increase of 28.6% to 33.8 %) and humification levels (HA/FA increased by 37.1 % to 49.6 %). Specifically, groups with high buffering capacity significantly promote the formation of NO3--N 3 --N and NH4+-N, 4 +-N, and a higher degree of humification, creating an optimal environment for significantly improving nitrogen retention (increased by 4.80 %). Additionally, this treatment retains and slightly enhances the plant-stimulating properties of seaweed. These findings underscore the potential of integrating biochar with specific ratios of phosphates and MgO to enhance composting efficiency and product quality while preserving the plant-stimulating effects of seaweed.
资助机构	TaiShan Industrial Experts Program ; National Natural Science Foundation of China ; Key Laboratory of Coastal Environmental Processes and Ecological Remediation at the Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences
收录类别	SCI
语种	英语
关键词[WOS]	EMISSION ; MATURITY ; DYNAMICS ; WASTES
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:001281107400001
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/35685
专题	海岸带生物学与生物资源利用重点实验室海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
通讯作者	Feng, Dawei
作者单位	1.Harbin Inst Technol Weihai, Sch Marine Sci & Technol, Weihai 264209, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 3.Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Cui, Yinjie,Zeng, Yang,Hu, Huili,et al. Biochar, phosphate, and magnesium oxide in seaweed and cornstarch dregs co-composting: Enhancing organic matter degradation, humification, and nitrogen retention[J]. WASTE MANAGEMENT,2024,187:207-217.
APA	Cui, Yinjie,Zeng, Yang,Hu, Huili,Zhang, Yuxue,Wang, Derui,&Feng, Dawei.(2024).Biochar, phosphate, and magnesium oxide in seaweed and cornstarch dregs co-composting: Enhancing organic matter degradation, humification, and nitrogen retention.WASTE MANAGEMENT,187,207-217.
MLA	Cui, Yinjie,et al."Biochar, phosphate, and magnesium oxide in seaweed and cornstarch dregs co-composting: Enhancing organic matter degradation, humification, and nitrogen retention".WASTE MANAGEMENT 187(2024):207-217.