Combined Microwave-Acid Pretreatment of the Biomass

Bioconversion of Sugarcane Biomass into Ethanol: An Overview about Composition, Pretreatment Methods, Detoxification of Hydrolysates, Enzymatic Saccharification, and Ethanol Fermentation

“…If compared with conventional heating method that uses superficial transfer of heat, microwave pretreatment uses the direct interaction between a heated object and an applied electromagnetic, generating high heating efficiency and easy operation [50]. The main advantage of this process is the short reactions times and homogeneous heating of the reaction mixture [51]. Microwave assisted pretreatment of SB/SS could be a useful process to save time and energy and minimum generation of inhibitors [52].…”

“…Microwave can be combined with the chemicals further to improve the sugar yield from the substrate [51]. …”

Acidic Pretreatment

“…Since the concentrated acid pretreatment process is operated at a low temperature and pressure, inhibitors from sugar degradation are less than those with dilute acid pretreatment, and relatively low-cost equipment such as fiberglass tanks and pipings is allowed [36]. The major drawback of this process is from the corrosiveness of acid itself [16,23,33,36,37]. The major drawback of this process is from the corrosiveness of acid itself [16,23,33,36,37].…”

Chapter 3. Sugarcane as an Alternative Source of Sustainable Energy

“…After the separation of char, the recovered solution is primarily composed of glucose, which can be eventually fermented for ethanol production [34]. The main advantages of this process are the short reaction times and homogeneous heating of the reaction mixture [37]. Primary pyrolysis reactions initiate at high temperatures to release volatiles, followed by condensation of hot volatiles and proceeded with autocatalytic secondary pyrolysis reactions [35].…”