Hydrothermal carbonization of sewage sludge for hydrochar production: optimization of operating conditions using Box-Behnken design coupled with response surface methodology
Hydrochar was produced from sewage sludge via the hydrothermal carbonization (HTC) process. The effects of carbonization temperature (150–300 °C), solid load (10–30%), and reaction time (30–120 min) were investigated using response surface methodology (RSM) based on the Box-Behnken factorial design....