Biogas Production Systems: Operation, Process Control, and Troubleshooting

Author(s):  
Hossein Ghanavati
Author(s):  
Nídia S. Caetano ◽  
Vera Ribeiro ◽  
Leonardo Ribeiro ◽  
Andresa Baptista ◽  
Joaquim Monteiro

2016 ◽  
Vol 39 (3) ◽  
pp. 334-343 ◽  
Author(s):  
Rafal Cupek ◽  
Kamil Folkert ◽  
Marcin Fojcik ◽  
Tomasz Klopot ◽  
Grzegorz Polaków

Classical control applications with a centralized logic and distributed input/output system are being replaced by dynamic environments of cooperating components. Thus, the OPC (Object Linking and Embedding for Process Control) UA (Unified Architecture) is becoming more popular, because the OPC Data Access substandard is not well suited for distributed systems. Moreover, in many production systems, redundant data servers are preferred, for financial and legal reasons. Providing performance evaluation gives an estimate of the time required (and data samples lost) to switch to a backup data source for redundant OPC UA architecture, depending on the failure detection method, number of variables and redundancy mode.


2017 ◽  
Vol 37 (6) ◽  
pp. 1081-1090 ◽  
Author(s):  
Camila F. Matos ◽  
Juliana L. Paes ◽  
Érika F. M. Pinheiro ◽  
David V. B. De Campos

2018 ◽  
Vol 30 ◽  
pp. 03007 ◽  
Author(s):  
Jakub Drewnowski ◽  
Ewa Zaborowska ◽  
Carmen Hernandez De Vega

Nowadays, the use of mathematical models and computer simulation allow analysis of many different technological solutions as well as testing various scenarios in a short time and at low financial budget in order to simulate the scenario under typical conditions for the real system and help to find the best solution in design or operation process. The aim of the study was to evaluate different concepts of biochemical processes and energy balance modelling using a simulation platform GPS-x and a comprehensive model Mantis2. The paper presents the example of calibration and validation processes in the biological reactor as well as scenarios showing an influence of operational parameters on the WWTP energy balance. The results of batch tests and full-scale campaign obtained in the former work were used to predict biochemical and operational parameters in a newly developed plant model. The model was extended with sludge treatment devices, including anaerobic digester. Primary sludge removal efficiency was found as a significant factor determining biogas production and further renewable energy production in cogeneration. Water and wastewater utilities, which run and control WWTP, are interested in optimizing the process in order to save environment, their budget and decrease the pollutant emissions to water and air. In this context, computer simulation can be the easiest and very useful tool to improve the efficiency without interfering in the actual process performance.


2021 ◽  
Vol 9 ◽  
Author(s):  
Abrar Inayat ◽  
Shams Forruque Ahmed ◽  
F. Djavanroodi ◽  
Fatima Al-Ali ◽  
Mira Alsallani ◽  
...  

Anaerobic digestion (AD) is an established method that has been extensively utilized for waste management, waste treatment, and biogas production. Anaerobic co-digestion (AcoD) is regarded as a practical approach to address substrate characteristics and system optimization issues. The distinction between AcoD and mono-digestion is that AcoD has a higher organic loading and significant substrate composition variation. There are many factors involved in AcoD which affect the biogas plant’s production ability and performance. Using response surface methodology (RSM) to forecast the optimal conditions for maximum biogas output, this article provides an overview of the different operational parameters in the AcoD process, modeling of the AcoD process, and overall process optimization. Standard software used for AcoD process simulation are Aspen Plus, SuperPro Designer, BioWin, CFD, and MATLAB. Review addresses design, development, and optimization frameworks for biogas production systems that take numerous aspects into account. The most significant AcoD optimization parameters include temperature, co-substrate concentration, inoculum ratio (percent), and C/N ratio.


Author(s):  
Meisam Tabatabaei ◽  
Elena Valijanian ◽  
Mortaza Aghbashlo ◽  
Hossein Ghanavati ◽  
Alawi Sulaiman ◽  
...  

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