Related Experiment Video
Updated: Feb 11, 2026

Electrostatic Method to Remove Particulate Organic Matter from Soil
Published on: February 10, 2021
Adsorption removal of natural organic matters in waters using biochar
Duu-Jong Lee1, Ya-Ling Cheng2, Ruei-Jyun Wong2
1Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
Abstract:
This work concerns the adsorption of aromatic organic matter from river water using various doses of a simulated biochar. The water yielded five UV254 peaks associated with organic matters in size exclusion chromatography (SEC), corresponding to molecular weights (MW) of 10,000, 6500, 4800, 3000, and 1500 Da. Biochar removes all of these peaks with an overall adsorption of 6.4 mg-DOC/g-C, and preferentially removes organic matter with high MW. Physisorption control in a pseudo-second-order type model fits the adsorption kinetics. Biochar can therefore be used as an efficient adsorbent of organic matter in water.
Related Concept Videos
Classifying Matter by State
Physical and Chemical Properties of Matter
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
The Atomic Theory of Matter
What is Natural Selection?
Analyte Adsorption and Distribution

