The manufacture of high-value products involves many different batch processes, for example industrial fermenters. Such processes require high levels of consistency in their operation to ensure minimal losses of raw materials, utilities and product. Recent application studies have indicated that multivariate statistical technology can provide some support when trying to maintain consistent oper...

The operation of a production facility has a major effect on the efficiency; therefore it is of upmost importance to find the best possible schedule. Due to the high practical expediency, the topic of batch process scheduling has gained growing interest in the last two decades and many approaches have been published to solve a wide variety of scheduling problems. In the present work first the d...

Modeling and simulation of Polyhydroxybutyrate (PHB) production by Protomonas extorquens in fed-batch culture were conducted in this research. The fed-batch model, developed for this process, employed a kinetic model proposed by other researchers. Several kinetic models were investigated to choose the best model. The criterion for this selection was goodness of fit (δ2). Haldane kinetic model w...

This paper presents industrial experience with a resource-constrained batch process scheduling program. The batch process representation is loosely based on the ISA S88 batch process standard. This representation allows the import of batch process information from other software, e.g. batch process simulators. The scheduling algorithm is a non-optimization approach that proceeds in two steps. F...

The paper presents an approach to improve the product quality from batch-to-batch by exploiting the repetitive nature of batch processes to update the operating trajectories using process knowledge obtained from previous runs. The data based methodology is focused on using the linear time varying (LTV) perturbation model in an iterative learning control (ILC) framework to provide a convergent b...

Today, the goal of many organizations is to optimize their business processes. A factor for optimization is the reduction of costs associated with mass production and customer service, e.g., by the mean of batch processing. In business process management, batch activities allow to improve the process performance by synchronizing the execution of a set of process instances. However, the issue of...

Both the continuous and batch transesterification of linseed oil were examined in order to maximize the fatty acid methyl esters (FAME) yield. The continuous process was conducted in a packed bed reactor using calcium oxide as a heterogeneous catalyst. In addition, the impact of two variables, namely the molar ratio of methanol to oil and the flow rate (ml/min), on the FAME yield were stu...

introduction: note taking while attending a ppt requires high activity of memory and writing process which ultimately leads to what is called “death by power point” referring to boredom and fatigue. to overcome this we planned to evaluate the impact of utilisation of uncompleted handouts given prior to ppt presentations. methods: final year mbbs students were divided in 2 batches, batch a and b...

To monitor a batch process, which is dynamic in nature, it is necessary to consider the time varying relationship of its variables throughout the entire run. MPCA models built with batch wise unfolded data have been used extensively for batch process monitoring, these methods will not only consider the known samples to asses the ongoing batch run, but will also consider a dynamic forecast of th...