Hydrolysate Lab Report

The experiments were conducted using homogenous anion exchange membranes (AEM) and cation exchange membranes (CEM) supplied by Permionics Membranes Pvt. Ltd. (Vadodara, India). The membrane size was 200 mm × 120 mm. The laboratory ED unit was fabricated using transparent acrylic plate purchased from Sushil enterprises (Saharanpur, India). The titanium electrodes (anode and cathode) were procured from Titanium Tantlum Pvt. Ltd., Chennai. The direct current was supplied by a power supply operating at 0-16 volt. Sulfuric acid, glucose, xylose and phenolphthalein were obtained from HiMedia Laboratories (Mumbai, India) and used without any further purification. Ultrapure Type 1 was used throughout the experiments.

4.2 Lignocellulosic Hydrolysate Preparation

The Kansas grass hydrolysate liquor was prepared in the Biochemical Engineering Laboratory, Indian Institute of Technology Roorkee, Roorkee in a laboratory scale vertical pretreatment reactor operated at conditions of 100°C, an approximate 30 minutes

The synthetic hydrolysate solutions were also prepared from different concentration of sulfuric acid and distilled water to conduct the initial set of experiments for optimization.

4.3 Experimental Procedure

All the experiments were conducted in a laboratory scale parallel planar electrodialyser using one cell pair of electrodialysis stack as shown in figure 1 and figure 2. The cell unit is composed of one anode and one cathode as well as membranes one anion exchange membrane (A) and two cation exchange membrane (C) along with spacers (S). The center of the cell has an opening of 36 cm2, which represents the effective area of etectrodialyser cell. The membranes are arranged to facilitate unidirectional ion flow under an applied