The green chemistry method was used to extract humic acid from sediments obtained from Eniong River, Nigeria). The percentage yield of 0.2, 0.41 and 0.63 were obtained for 0.1, 0.5 and 1.0M NaOH respectively. The prepared humic acid (HA) was characterized using Ultraviolet-visible spectroscopy, Fourier transformed infrared spectroscopy (FTIR) and as well an investigating its surface properties. The spectrum confirmed the presence of surface functional group including -OH, -CO, -COOH. The UV spectrum was featureless typical of humic acids. The surface properties investigation showed that the extracted humic acid (EHA) was a mesoporous adsorbent with pore size between 2-50nm.
Inhaltsverzeichnis (Table of Contents)
- 1 INTRODUCTION
- Background of Study
- 2 EXPERIMENTAL
- 2.1 Description of Study Area
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This research aims to extract humic acid from sediments collected from Eniong River, Nigeria, using a green chemistry approach. The extracted humic acid is then characterized using UV-Vis and FTIR spectroscopy, and its surface properties are investigated.
- Extraction of humic acid from river sediments
- Characterization of humic acid using spectroscopic techniques
- Investigation of the surface properties of the extracted humic acid
- Potential applications of humic acid as an adsorbent
- The role of humic substances in the environment
Zusammenfassung der Kapitel (Chapter Summaries)
The introduction provides a historical overview of humic substances, their importance in soil and water environments, and the different mechanisms proposed for their formation. It discusses the different types of humic substances, including humic acid, fulvic acid, and humin, and highlights their chemical properties and structural characteristics.
The experimental section describes the study area, Eniong River, and outlines the methodology for extracting humic acid from the collected sediments. It details the characterization techniques employed, including UV-Vis and FTIR spectroscopy, and the investigation of the surface properties of the extracted humic acid.
Schlüsselwörter (Keywords)
Humic acid, extraction, sediments, Eniong River, green chemistry, UV-Vis spectroscopy, FTIR spectroscopy, surface properties, adsorbent, environmental chemistry.
Frequently Asked Questions
What is the focus of the humic acid research in Nigeria?
The research focuses on extracting humic acid from sediments of the Eniong River using a green chemistry approach and characterizing its properties.
Which methods were used for extraction?
The study used different concentrations of Sodium Hydroxide (NaOH) to obtain varying yields of humic acid from the river sediment.
How was the extracted humic acid characterized?
Techniques such as Ultraviolet-visible (UV-Vis) spectroscopy and Fourier transformed infrared (FTIR) spectroscopy were used to confirm functional groups like -OH and -COOH.
What are the surface properties of the extracted humic acid?
Investigation showed that it is a mesoporous adsorbent with a pore size between 2 and 50 nm, making it suitable for environmental applications.
Why are humic substances important for the environment?
Humic substances play a critical role in soil and water chemistry, affecting nutrient cycling and acting as natural adsorbents for pollutants.
- Quote paper
- Ofonime Udo (Author), 2015, Extraction of humic acid from sediment obtained from Eniong River, Nigeria, Munich, GRIN Verlag, https://www.grin.com/document/296182
