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Updated: Jun 10, 2026

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Published on: June 15, 2014

Biochar from anaerobically digested sugarcane bagasse.

Mandu Inyang¹, Bin Gao, Pratap Pullammanappallil

¹Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.

Bioresource Technology

|July 17, 2010

Summary

This summary is machine-generated.

Anaerobic digestion of sugarcane bagasse enhances biochar properties. This digested bagasse biochar (DBC) shows improved characteristics for soil, remediation, and water treatment applications.

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Area of Science:

Agricultural Waste Management
Biomass Pyrolysis
Biochar Characterization

Background:

Sugarcane bagasse is a significant agricultural waste product.
Biochar production from biomass is a sustainable practice.
Anaerobic digestion is a process for waste treatment and biogas production.

Purpose of the Study:

To investigate the impact of anaerobic digestion on sugarcane bagasse biochar.
To compare the physicochemical properties of biochar derived from digested versus undigested bagasse.
To evaluate the potential applications of biochar produced from anaerobic digestion residues.

Main Methods:

Sugarcane bagasse underwent anaerobic digestion to produce methane and residue.
Both digested residue and fresh bagasse were pyrolyzed at 600°C under nitrogen.
Physicochemical properties of the resulting biochars (DBC and BC) were characterized.

Main Results:

Biochar yields were comparable from digested (18%) and raw (23%) bagasse.
Digested bagasse biochar (DBC) exhibited higher pH, surface area, CEC, AEC, and hydrophobicity compared to undigested biochar (BC).
DBC also displayed a more negative surface charge than BC.

Conclusions:

Anaerobic digestion significantly alters the physicochemical properties of sugarcane bagasse biochar.
The enhanced properties of DBC make it highly suitable for soil amelioration, contaminant remediation, and wastewater treatment.
Pyrolyzing anaerobic digestion residues offers an economically and environmentally sound method for agricultural waste valorization.