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确定有效废人发水解参数组合及其在合成液态氮有机肥料中的典型物理化学特性。

Determining effective waste human hair hydrolyzing parameters combination and its typical physicochemical characteristics in synthesizing liquid nitrogenous organic fertilizer.

机构信息

Chemical Engineering Department, Institute of Technology, Hawassa University, Hawassa, Ethiopia.

出版信息

Sci Rep. 2024 Nov 9;14(1):27382. doi: 10.1038/s41598-024-79116-5.

DOI:10.1038/s41598-024-79116-5
PMID:39521903
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11550818/
Abstract

Discarded Human hairs are considered as waste material in most parts of the world and its accumulation causing several environmental problems. However as a potential material resource, human hair has the advantage that it is completely biodegradable, renewable and available in every locality. Thus reutilizing human hair cut discards with a target of extracting a particular major nutrient supply, namely nitrogen, carbon, sulfur and so forth, can create a positive impact on solving soil's infertility problems and less productivity issues of concerned agrarian communities. This study has tried to develop waste human hair based bio-fertilizer by primarily identify the better performing hydrolyzing mixture rang of formulation (H5), ratio of human hair waste mass to aqueous hydrolyzer mixture usages (1:5), favorable reacting time ( 90 min) and temperature ( 70 C) values progressively. Then the physicochemical characteristics were analyzed to reveal the resulted final product's viscosity (~ 76.0 cp.), density (~ 1.17 gm/l), pH (~ pH 9), organic nutrients availability concerning primary Macronutrients (~ 18:0.03:1 N-P-K ratio ), Secondary Macronutrients (~ 0.13:0:7 Ca-Mg-S ratio) and other trace micronutrient constituents; which are considered as requirements for the soil nutrient enrichments and plant growths.

摘要

在世界上的大多数地方,废弃的人类毛发都被视为废物,其堆积会造成许多环境问题。然而,作为一种潜在的材料资源,人类毛发完全可生物降解、可再生,并且在每个地方都有供应。因此,重新利用剪下的废弃毛发,并以提取特定的主要营养物质供应(如氮、碳、硫等)为目标,可以对解决土壤贫瘠问题和有关农业社区的低生产力问题产生积极影响。本研究试图通过初步确定表现更好的水解混合物配方范围(H5)、人类毛发废物质量与水水解混合物使用比例(1:5)、有利的反应时间(90 分钟)和温度(70°C)值,来开发基于废弃人类毛发的生物肥料。然后,对其物理化学特性进行分析,以揭示最终产物的粘度(76.0 cp.)、密度(1.17 gm/l)、pH(pH 9)、主要大量营养素(18:0.03:1 N-P-K 比)、次要大量营养素(~0.13:0:7 Ca-Mg-S 比)和其他痕量微量元素的可用性,这些都是土壤养分丰富和植物生长所必需的。

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本文引用的文献

1
Solubility of structurally complicated materials: 3. Hair.结构复杂材料的溶解性:3. 毛发。
ScientificWorldJournal. 2009 Apr 27;9:255-71. doi: 10.1100/tsw.2009.27.
2
Fourier-transform Raman spectroscopic study of human hair.人发的傅里叶变换拉曼光谱研究。
Spectrochim Acta A Mol Biomol Spectrosc. 1997 Jul 15;53A(7):1021-31. doi: 10.1016/s1386-1425(97)00055-3.