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PREPARATION CONDITIONS OF HUMIC ACIDS FROM VILLAGE'S COMPOST FUEL (VCF) AND THEIR EFFECTS ON HUMIC ACIDS CHEMICAL CHARACTERISTIC ALTERNATION DURING ISOLATION PART II. EFFECT OF TH

Article

Last updated: 03 Jan 2025

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Tags

Chemistry

Abstract

IR spectra of humic acids ( HAs) extracted by  NaOH solution under different conditions  showed that  HAs extracted by 0.1 M after 6h  and 16 h have identical finger print regions. These spectra indicate the presence of highest number of  functional groups and highest aromatic COOH group content, in comparison with ( HAs) extracted by 0.1M after 2h  and 24 h. IR spectrum of humic acids  HAs extracted by 0.2M after 2h was generally similar with the two latter spectra. The IR spectra of HAs extracted after 2h by 0.5M, 1M, and 2M not only show the disappearance of aromatic COOH bands but also indicate the hydrolysis of ester moieties and increase the OH groups content of the extracted HAs. The IR spectra of HAs extracted at the latter three concentrations showed attacked finger print regions. Uv-Vis spectra show two clearly observable peaks at 208 and 280 nm which are characteristic to these humic acids. The spectral change of the latter are in agreement with the results obtained by IR analysis  According to results obtained,  the extraction by 0.1M NaOH after 16h leads to production of HAs of highest condensation, highest functional group content. 

DOI

10.21608/absb.2007.11105

Keywords

Humic acids, VCF

Authors

First Name

M.

Last Name

BADR

MiddleName

H.

Affiliation

Chemistry Department, Faculty of Science, Al-Azhar University (For Girls)

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City

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Orcid

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Volume

18

Article Issue

Issue 1-A

Related Issue

2097

Issue Date

2007-06-01

Receive Date

2007-01-16

Publish Date

2007-06-01

Page Start

87

Page End

101

Print ISSN

1110-2535

Online ISSN

2636-3305

Link

https://absb.journals.ekb.eg/article_11105.html

Detail API

https://absb.journals.ekb.eg/service?article_code=11105

Order

14

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

PREPARATION CONDITIONS OF HUMIC ACIDS FROM VILLAGE'S COMPOST FUEL (VCF) AND THEIR EFFECTS ON HUMIC ACIDS CHEMICAL CHARACTERISTIC ALTERNATION DURING ISOLATION PART II. EFFECT OF THE EXTRACTION CONDITIONS ON THE FUNCTIONAL GROUPS CONTENTS OF HUMIC ACIDS AS REVEALED BY SPECTROSCOPIC ANALYSIS

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Type

Article

Created At

22 Jan 2023