富含营养的热水碳生产由外源营养物质与海藻内部水相结合
Jikai Lu1, Rui Wang2, Bing Wang3
1College of Engineering, Ocean University of China, 1299 San-sha Road, Qingdao, 266000, Shandong, China; Shandong Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), 19 Ke-yuan Road, Jinan, 250014, Shandong, China.
Journal of environmental management
|December 10, 2023
概括
这项研究引入了一种新的方法,从海藻中制造富含营养的热水碳 (NRHC),增强土壤改善和减少浪费. 该过程显著增加了营养含量,导致了更好的植物生长和经济高效的生产.
科学领域:
- 生物质的转化和利用.
- 用于环境应用的材料科学
- 可持续农业和土壤科学
背景情况:
- 水热碳化 (HTC) 产生有价值的水热碳,用于改善土壤,但传统方法产生营养缺乏的产品和危险的废水.
- 需要可持续和高效的方法来生产富含营养的热水碳 (NRHC) 用于农业应用.
研究的目的:
- 开发一阶段,可扩展的战略,以利用海藻和外源营养素生产工业营养丰富的热水碳 (NRHC).
- 研究营养物质结合的机制以及由此产生的NRHC的特性.
- 评估新NRHC生产工艺的经济可行性和环境效益.
主要方法:
- 将外源营养素 (二酸,酸,尿素) 与海藻内部水相结合,用于HTC.
- 利用表面复合沉,离子交换和静电相互作用来分配营养.
- 使用密度函数理论 (DFT) 模拟来分析NRHC属性.
- 进行种子发芽测试,以评估农业肥料标准.
主要成果:
- 与传统的热水碳相比,用外源营养素生产的NRHC显示N (2.12x),P (18.56x) 和K (25.69x) 含量显著增加.
- 种子发芽的根系长度增加了4.3-5.9倍,符合农业肥料标准.
- 精简的过程使NRHC生产成本降低了47.83-58.23%,利增加了1.56-1.68倍,同时尽量减少废水的产生.
结论:
- 一个多功能和可扩展的单步策略,用于生产工业营养丰富的热水碳 (NRHC) 已经成功演示.
- 外源营养素的加入显著提高了热水碳的营养含量和农业效用.
- 这种低成本,环保的工艺为水热碳在农业中大规模生产和直接应用提供了一个有希望的新途径.
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