Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi

The humification process in peat soils involves the degradation of physical structure in organic matter and changes in chemical characteristics under aerobic and anaerobic conditions. To classify humification degree, the von Post Scale method is widely used by industries, researchers and students. H...

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Main Author:	Azmi, Izzatul Akmal
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Soils Soil science Including soil surveys, soil chemistry, soil structure, soil-plant relationships Fuel
Online Access:	https://ir.uitm.edu.my/id/eprint/75378/1/75378.pdf
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spelling	my-uitm-ir.753782023-03-28T11:23:45Z Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi 2022 Azmi, Izzatul Akmal Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships Fuel The humification process in peat soils involves the degradation of physical structure in organic matter and changes in chemical characteristics under aerobic and anaerobic conditions. To classify humification degree, the von Post Scale method is widely used by industries, researchers and students. However, this method often produces different results and interpretation due to different skills exhibit by individuals. This study hypothesized that there is a significant difference between physicochemical properties of peat soils in relation with different peat humification degree. The objectives of this study are to analyze the physicochemical properties of peat soils; to compare the humification degree between von Post Scale and FESEM-EDX technique, and to propose the basic humification classification technique for the Tasik Series. The peat samples with various degrees of decomposition were differentiate in the field using the von Post Scale method. Physical analyses were performed using the Munsell soil colour chart, core rings, oven-dried method, and syringe method to determine the soil colour, bulk density, moisture content, and fibre content, respectively. Soil chemical properties analyses conducted includes the soil pH in KCl and water, soil C/N ratio, soil exchangeable cations (Ca, Mg, and Na) and soil cation exchange capacity (CEC). The microstructural analysis was determined using FESEM, and the elemental analysis was derived using EDX. The results for physical analysis showed that the higher the peat humification degree, the peat soils become darker with increment in soil bulk density, lower soil water content as well as organic matter contents. On the other hand, the results of soil chemical analysis were inconsistent among samples. The data indicates that as peat soils' decomposition increases, the soil pH, nutrient availability, soil cation exchange capacity and soil exchangeable cations also increase whereas the soil C/N ratio showed a decreasing pattern. Owing to the FESEM analysis solely observed based on a minute scale, the characterization of basic humification degree was not able to be introduced due to the inconsistent and fluctuating results in microscopic, chemical, and elemental analysis. As such, bigger sample sizes are needed in the future to obtain better results. 2022 Thesis https://ir.uitm.edu.my/id/eprint/75378/ https://ir.uitm.edu.my/id/eprint/75378/1/75378.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Plantation and Agrotechnology Boll Kassim, Nur Qursyna
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Boll Kassim, Nur Qursyna
topic	Soils Soil science Including soil surveys, soil chemistry, soil structure, soil-plant relationships Fuel
spellingShingle	Soils Soil science Including soil surveys, soil chemistry, soil structure, soil-plant relationships Fuel Azmi, Izzatul Akmal Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
description	The humification process in peat soils involves the degradation of physical structure in organic matter and changes in chemical characteristics under aerobic and anaerobic conditions. To classify humification degree, the von Post Scale method is widely used by industries, researchers and students. However, this method often produces different results and interpretation due to different skills exhibit by individuals. This study hypothesized that there is a significant difference between physicochemical properties of peat soils in relation with different peat humification degree. The objectives of this study are to analyze the physicochemical properties of peat soils; to compare the humification degree between von Post Scale and FESEM-EDX technique, and to propose the basic humification classification technique for the Tasik Series. The peat samples with various degrees of decomposition were differentiate in the field using the von Post Scale method. Physical analyses were performed using the Munsell soil colour chart, core rings, oven-dried method, and syringe method to determine the soil colour, bulk density, moisture content, and fibre content, respectively. Soil chemical properties analyses conducted includes the soil pH in KCl and water, soil C/N ratio, soil exchangeable cations (Ca, Mg, and Na) and soil cation exchange capacity (CEC). The microstructural analysis was determined using FESEM, and the elemental analysis was derived using EDX. The results for physical analysis showed that the higher the peat humification degree, the peat soils become darker with increment in soil bulk density, lower soil water content as well as organic matter contents. On the other hand, the results of soil chemical analysis were inconsistent among samples. The data indicates that as peat soils' decomposition increases, the soil pH, nutrient availability, soil cation exchange capacity and soil exchangeable cations also increase whereas the soil C/N ratio showed a decreasing pattern. Owing to the FESEM analysis solely observed based on a minute scale, the characterization of basic humification degree was not able to be introduced due to the inconsistent and fluctuating results in microscopic, chemical, and elemental analysis. As such, bigger sample sizes are needed in the future to obtain better results.
format	Thesis
qualification_level	Master's degree
author	Azmi, Izzatul Akmal
author_facet	Azmi, Izzatul Akmal
author_sort	Azmi, Izzatul Akmal
title	Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
title_short	Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
title_full	Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
title_fullStr	Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
title_full_unstemmed	Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi
title_sort	peat soils humification degree analyzed by fesem equipped with energy dispersive xray technique as supplemental for von post scale method / izzatul akmal azmi
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Plantation and Agrotechnology
publishDate	2022
url	https://ir.uitm.edu.my/id/eprint/75378/1/75378.pdf
_version_	1783736049358340096

Peat soils humification degree analyzed by FESEM equipped with energy dispersive Xray technique as supplemental for von Post Scale method / Izzatul Akmal Azmi

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