However, the hydrogen yield of group 900-5-300 was only 5.5% lower than that of group 800-5-300, while the reaction rate increased by 2.22-fold (from 0.27 L/min to 0.60 L/min). In addition, further elevation of reaction temperature from 900 o C to 1100 o C is not cost-effective (only a 30% improvement in reaction rate), which impedes the industrial application of this technology. From the perspective of hydrogen yield and reaction rate, 900 o C should be a more suitable temperature for industrial hydrogen production from biochar than 700-800 o C suggested by previous studies .