Biochar for Wastewater Treatment: Preparation, Modification, Characterization, and Its Applications

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Water contamination is a critical global issue impacting human health and ecosystems.
• Biochar, a biomass-derived material, shows promise for wastewater treatment applications.

Purpose of the Study:

• To provide a comprehensive review of biochar preparation, modification, characterization, and application in wastewater treatment.
• To highlight biochar's effectiveness in removing diverse pollutants and its role in environmental remediation.

Main Methods:

• Literature review of peer-reviewed articles from reputable databases.
• Analysis of biochar preparation via pyrolysis and its influencing factors (biomass type, operational conditions).
• Evaluation of characterization techniques (FTIR, XRD, XPS, SEM, TGA, BET) for assessing biochar properties.

Main Results:

• Pyrolysis is the primary method for biochar production, with biomass and conditions influencing its characteristics.
• Biochar demonstrates significant effectiveness in removing organic and inorganic contaminants from wastewater.
• Characterization techniques are vital for understanding biochar's potential in environmental applications.

Conclusions:

• Biochar is a promising material for wastewater treatment and environmental remediation.
• Further research is essential to address concerns regarding long-term stability, pollutant release, environmental safety, and regeneration.
• Establishing quality standards and regulatory frameworks is crucial for the sustainable use of biochar in water management.