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

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

Gebremeariam M K  1 , Gessese D A  2
Affiliations

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

Gebremeariam M K et al. Sci Rep. .

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 oC) 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.

Keywords: Bio-fertilizer; Hydrolysis; Physicochemical; Reutilization; Waste human hair.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Process flow diagram of liquid organic fertilizer production from waste human hair.
Fig. 2
Fig. 2
Comparative values of applied temperature and waste human hair mass ratio applied.
Fig. 3
Fig. 3
Comparative time effect values between identified hydrolyzer types and hydrolysis reaction completion rate.
See this image and copyright information in PMC

References

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