Related Experiment Video
Updated: Feb 8, 2026

Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water
Published on: July 25, 2025
[Removal of Humic Acid from Water Using Pt/biochar Electrode Reactor]
Wen-Chuan Ding1,2, Xing-Guang Xiang1, Xiao-Lan Zeng1,2
1Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China.
Abstract:
A Pt/biochar electrode reactor was developed to remove humic acid in water. The removal efficiency and characteristics of the reactor were investigated. Experimental results showed that Pt/biochar electrode reactor obtained 74.58% removal rate after 300 min reaction under current density of 20 mA·cm-2. The removal rate was increased by 58.3% comparing with 47.10% removal rate achieved by Pt/graphite electrode reactor. Electrochemical oxidation and air floating played the main roles in removal of humic acid from water. The improved removal efficiency of humic acid in Pt/biochar electrode reactor was attributed to the fact that the biochar cathode could produce more H2O2 than graphite cathode. Three-dimensional excitation emission matrix fluorescence spectroscopy and Gel permeation chromatography measurement revealed that Pt/biochar electrode reactor had strong oxidation capability to mineralize the low molecular weight humic acid directly. It suggests that biochar could be use as an innovative cathode material of electrode reactor for organic pollutants treatment in water.
More Related Videos
Related Concept Videos
Water: A Bronsted-Lowry Acid and Base
Standard Electrode Potentials
Water and Mineral Acquisition
States of Water
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
Polyprotic Acids
Electrodes: Overview
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...

