2.2. Optimisation of dilute acid pretreatment
Generally, for pretreatment reactions 100 g of ground CGT was mixed with 1 L of sulfuric acid solution in a 2 L stirred Parr reactor(Parr Instruments, USA) and allowed to pre-soaked at 50 C for 30 min prior to initiating the pretreatment to ensure thorough wetting of solids.