Statistical investigation of study the effects of different parameters on hexamine production using response surface methodology (RSM)

Abstract

The current study was devoted to investigate experimentally and statistically the effects of different parameters on hexamine production in a bench-scale setup operating in a batch mode. The operating variables were varied in the range of (formaldehyde/ammonia) ratio =2 to 10; temperature = 20 to 80 ^oC; process time = 0 to 100 min). Experimental results revealed that a positive impact of (formaldehyde/ammonia) ratio on the production process was observed across the studied range, while temperature and time showed optimum values of 60 ^oC and 60 min, respectively for the optimum % yield of hexamine is 98%. Statistical analysis of the process showed that the Model F-value of 17.63 reveals the model's significance.  While there is only a 0.01% chance that a "Model   F-value" could come because of noise. Values of "Prob > F" less than 0.0500 point model codes are significant.