覆盖铁的坚果废弃物生物吸收剂:合成,酸盐修复,以及随后的肥料应用
Chandra M Tummala1, Mohammed Dardona1, Sai Praneeth1
1Department of Civil and Environmental Engineering, Wayne State University, 5050 Anthony Wayne Dr., Detroit, MI, 48202, USA.
Environmental research
|October 23, 2023
概括
这项研究开发了铁涂的雪茄和核桃来捕获废水中的酸盐,证明了它们作为缓释肥料的潜力. 新型生物吸收剂有效地去除了酸盐并增强了植物生长,促进了循环经济目标.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 农业科学 农业科学
背景情况:
- 淡水营养物质的污染,特别是酸盐的污染,是全球日益关注的问题,导致有害的藻类繁殖.
- 有效的酸盐回收对于防止肥胖和保护有限的酸盐储量至关重要.
- 生物降解生物吸收剂提供了酸盐去除的潜力,但它们作为缓释肥料的双重作用需要研究.
研究的目的:
- 从农业废物中开发新的生物降解生物吸收剂,用于酸盐捕获.
- 为了评估铁氧化物涂层外的吸附能力和性能,以去除酸盐.
- 评估含的生物吸收剂作为缓释肥料对植物生长的潜力.
主要方法:
- 用铁氧化物涂覆 pistachio 和核桃,以创建新的生物吸收剂.
- 进行批量和列实验以确定酸盐吸附能力.
- 使用先进的表征技术 (SEM,BET,XRD) 进行表面分析.
- 进行序列释放实验和Mehlich-3提取,以评估酸盐的生物可用性.
- 评估使用含生物吸收剂的营养原料进行植物生长促进.
主要成果:
- 成功地用血涂覆贝,增加表面积和粗度.
- 酸盐去除能力为12.63毫克/克的涂层 pistachio 和9.25毫克/g的涂层核桃.
- 酸盐吸附数据最适合弗洛伊德利希等热量和伪二次动力学,表明复杂的吸收机制.
- 序列释放实验显示了快速和缓慢的酸盐脱吸成分.
- 超过90%的释放的酸盐是生物可用的植物吸收,玉米芽生长的增加>43%.
结论:
- 铁涂的雪茄和核桃是有效的,低成本的生物吸收剂,用于从废水中去除酸盐.
- 这些生物吸收剂作为可行的缓释肥料,利用农业废物并帮助回收.
- 开发的技术通过将废物转化为有价值的资源,支持零废物循环经济目标.
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