초록
Production of hydrogen is influenced by the pH, the concentration of organic matter, and the concentration of sludge. A short-term test is presented in which the specific hydrogenic activity of a waste sludge is calculated in order to quantify its hydrogen production capacity. To determine the ideal conditions for the measurement of SHA was used glucose in concentrations of 1000; 2000; 4000; 8000; 12,000; 16,000; and 20,000 mg O<SUB>2</SUB> L<SUP>-1</SUP>; sludge in concentrations of 1250; 2500; 5000; and 7500 mg TVS L<SUP>-1</SUP>; and pH adjustments of 5.0; 5.5; 6.0; and 6.5. Given the initial concentration of soluble COD of 12,000 mg O<SUB>2</SUB> L<SUP>-1</SUP>, sludge concentration of 2500 mg TVS L<SUP>-1</SUP>, and pH of 6.0, the highest SHA obtained was 483 mLH<SUB>2</SUB> g TVS<SUP>-1</SUP> h<SUP>-1</SUP>. As to volumetric measurements, given the initial concentration of organic matter of 8000 mg L<SUP>-1</SUP>, biomass concentration of 5.000 mg TVS L<SUP>-1</SUP>, and pH of 5.5, the volume of produced hydrogen per mass of soluble COD added reached a maximum of 38 mL gCOD<SUP>-1</SUP>.