Ghanim Alwan | Missouri University of Science and Technology (original) (raw)
Papers by Ghanim Alwan
Global Journal of Research In Engineering, Jul 10, 2015
This work deals with modeling and operation optimization of lab-scale continuous biochemical reac... more This work deals with modeling and operation optimization of lab-scale continuous biochemical reactor. Wastewater is feeding to reactor contaminated with different concentration of glucose. The reactor is non-linear with stochastic changing in optimum operating conditions. Simulated model could develop the process and generate extra-confirmed data. The selected process variables are: dilution rate (D), feed substrate concentration (Si), pH and temperature (T). Simulated model could develop the process and generate extra-confirmed data. The effect of D was observed within Si of 20 g/L, while pH and T are affecting within Si of 60 g/L.Si has major effect on dynamic characteristics of the reactor. Reasonable agreement has been found when compared the simulated result with the previous work. Optimization technique helps the decision maker to select best operating conditions. This could reduce the risk of experimental runs and consumed cost for operating and design. Global Genetic algorithm (GA) has been found more reliable than deterministic search for the bioreactor. Optimization results are based on maximizing biomass growth. Optimal results indicate that maximum biomass concentration (X) is 80.57 g/L could be obtained at high value of Si (197.56 g/L) and low D (0.1hr-1 ).Si is sensitive variable for stochastic mutation of biomass growth.
Tikrit Journal of Engineering Science, Jun 30, 2008
The present work studies the effect of noise on the dynamic response of pH, conductivity and ther... more The present work studies the effect of noise on the dynamic response of pH, conductivity and thermocouple sensors which used into several industrial processes. Thermocouple would be proven had more stability against noise than conductivity and pH meter. The effect of noise on process signals could be condensate as low as possible by using suitable model of filter especially when the sensors were implemented to a digital computer.
DOAJ (DOAJ: Directory of Open Access Journals), Feb 1, 2015
The present work studies the effect of noise on the dynamic response of pH, conductivity and ther... more The present work studies the effect of noise on the dynamic response of pH, conductivity and thermocouple sensors which used into several industrial processes. Thermocouple would be proven had more stability against noise than conductivity and pH meter. The effect of noise on process signals could be condensate as low as possible by using suitable model of filter especially when the sensors were implemented to a digital computer.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2018
Experimental investigations have been carried out to investigate the pH-control problems of indus... more Experimental investigations have been carried out to investigate the pH-control problems of industrial electroplating wastewater treatment plants. The accurate and sensitive PID control system could treat most problem and disturbances in the normal operation of the water treatment. However, conventional treatment was replaced by proprietary treatment agent called a QUASIL which was found to be more effective for a wide range of pH.
Journal of Techniques, 2008
The stability condition of the plate heat exchanger (PHE) which is dynamically highly nonlinear c... more The stability condition of the plate heat exchanger (PHE) which is dynamically highly nonlinear can be limited by using the experimental phase plane technique. This technique proved to be better and more accurate compared with other methods which are needed to solve a set of theoretical complex differential equations to study the stability of PHE. The accuracy of this technique can be increased by increasing the numbers of on-line detectors which are implemented with digital computer. Nomenclature F 1 : Cold water flow rate (Kg / sec). F 2 : Hot water flow rate (Kg / sec). kc : Proportional gain (-). T 1 : Inlet temperature of cold water (°C). T 2 : Outlet temperature (controlled variable) of cold water (°C). T 3 : Inlet temperature of hot water (°C). T 4 : Outlet temperature of hot water (°C). T I : Integral control time constant (minute). T D : Derivative control time constant (minute). t : Time (minute).
LabVIEW technique is the powerful graphical programming language that has its roots in operation,... more LabVIEW technique is the powerful graphical programming language that has its roots in operation, automation control and data recording for the wastewater system with multiple contaminants of heavy metals; Cu, Cr, and Fe from the electroplating process. LabVIEW is a flexible language that contains large number of functions and tools, which enhance the performance of the process. pH of wastewater is the major key of precipitation process which selected as the desired value of the treatment system. The flow rate of chemical reagents (acid and base) can be selected as the effective decision variable. The pH process dynamically behaved as the first order lag system with dead time. Proportional-integral (PI) mode would be proven as the best scheme for control the fast pH process. Genetic algorithm (GA) was found the suitable stochastic technique for adaptation controller parameters of the unsteady state nonlinear system. PI genetic adaptive controller improves the performance of the process.
Iraqi Journal of Chemical and Petroleum Engineering, 2015
Performance of gas-solid spouted bed benefit from solids uniformity structure (UI).Therefore, the... more Performance of gas-solid spouted bed benefit from solids uniformity structure (UI).Therefore, the focus of this work is to maximize UI across the bed based on process variables. Hence, UI is to be considered as the objective of the optimization process .Three selected process variables are affecting the objective function. These decision variables are: gas velocity, particle density and particle diameter. Steady-state solids concentration measurements were carried out in a narrow 3-inch cylindrical spouted bed made of Plexiglas that used 60° conical shape base. Radial concentration of particles (glass and steel beads) at various bed heights and different flow patterns were measured using sophisticated optical probes. Stochastic Genetic Algorithm (GA) has been found better than deterministic search for study mutation of process variables of the non-linear bed. Spouted bed behaved as hybrid system. Global GA could provide confirmed data and selected best operating conditions. Optimiza...
Global Journal of Research In Engineering, Jul 10, 2015
This work deals with modeling and operation optimization of lab-scale continuous biochemical reac... more This work deals with modeling and operation optimization of lab-scale continuous biochemical reactor. Wastewater is feeding to reactor contaminated with different concentration of glucose. The reactor is non-linear with stochastic changing in optimum operating conditions. Simulated model could develop the process and generate extra-confirmed data. The selected process variables are: dilution rate (D), feed substrate concentration (Si), pH and temperature (T). Simulated model could develop the process and generate extra-confirmed data. The effect of D was observed within Si of 20 g/L, while pH and T are affecting within Si of 60 g/L.Si has major effect on dynamic characteristics of the reactor. Reasonable agreement has been found when compared the simulated result with the previous work. Optimization technique helps the decision maker to select best operating conditions. This could reduce the risk of experimental runs and consumed cost for operating and design. Global Genetic algorithm (GA) has been found more reliable than deterministic search for the bioreactor. Optimization results are based on maximizing biomass growth. Optimal results indicate that maximum biomass concentration (X) is 80.57 g/L could be obtained at high value of Si (197.56 g/L) and low D (0.1hr-1 ).Si is sensitive variable for stochastic mutation of biomass growth.
Tikrit Journal of Engineering Science, Jun 30, 2008
The present work studies the effect of noise on the dynamic response of pH, conductivity and ther... more The present work studies the effect of noise on the dynamic response of pH, conductivity and thermocouple sensors which used into several industrial processes. Thermocouple would be proven had more stability against noise than conductivity and pH meter. The effect of noise on process signals could be condensate as low as possible by using suitable model of filter especially when the sensors were implemented to a digital computer.
DOAJ (DOAJ: Directory of Open Access Journals), Feb 1, 2015
The present work studies the effect of noise on the dynamic response of pH, conductivity and ther... more The present work studies the effect of noise on the dynamic response of pH, conductivity and thermocouple sensors which used into several industrial processes. Thermocouple would be proven had more stability against noise than conductivity and pH meter. The effect of noise on process signals could be condensate as low as possible by using suitable model of filter especially when the sensors were implemented to a digital computer.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2018
Experimental investigations have been carried out to investigate the pH-control problems of indus... more Experimental investigations have been carried out to investigate the pH-control problems of industrial electroplating wastewater treatment plants. The accurate and sensitive PID control system could treat most problem and disturbances in the normal operation of the water treatment. However, conventional treatment was replaced by proprietary treatment agent called a QUASIL which was found to be more effective for a wide range of pH.
Journal of Techniques, 2008
The stability condition of the plate heat exchanger (PHE) which is dynamically highly nonlinear c... more The stability condition of the plate heat exchanger (PHE) which is dynamically highly nonlinear can be limited by using the experimental phase plane technique. This technique proved to be better and more accurate compared with other methods which are needed to solve a set of theoretical complex differential equations to study the stability of PHE. The accuracy of this technique can be increased by increasing the numbers of on-line detectors which are implemented with digital computer. Nomenclature F 1 : Cold water flow rate (Kg / sec). F 2 : Hot water flow rate (Kg / sec). kc : Proportional gain (-). T 1 : Inlet temperature of cold water (°C). T 2 : Outlet temperature (controlled variable) of cold water (°C). T 3 : Inlet temperature of hot water (°C). T 4 : Outlet temperature of hot water (°C). T I : Integral control time constant (minute). T D : Derivative control time constant (minute). t : Time (minute).
LabVIEW technique is the powerful graphical programming language that has its roots in operation,... more LabVIEW technique is the powerful graphical programming language that has its roots in operation, automation control and data recording for the wastewater system with multiple contaminants of heavy metals; Cu, Cr, and Fe from the electroplating process. LabVIEW is a flexible language that contains large number of functions and tools, which enhance the performance of the process. pH of wastewater is the major key of precipitation process which selected as the desired value of the treatment system. The flow rate of chemical reagents (acid and base) can be selected as the effective decision variable. The pH process dynamically behaved as the first order lag system with dead time. Proportional-integral (PI) mode would be proven as the best scheme for control the fast pH process. Genetic algorithm (GA) was found the suitable stochastic technique for adaptation controller parameters of the unsteady state nonlinear system. PI genetic adaptive controller improves the performance of the process.
Iraqi Journal of Chemical and Petroleum Engineering, 2015
Performance of gas-solid spouted bed benefit from solids uniformity structure (UI).Therefore, the... more Performance of gas-solid spouted bed benefit from solids uniformity structure (UI).Therefore, the focus of this work is to maximize UI across the bed based on process variables. Hence, UI is to be considered as the objective of the optimization process .Three selected process variables are affecting the objective function. These decision variables are: gas velocity, particle density and particle diameter. Steady-state solids concentration measurements were carried out in a narrow 3-inch cylindrical spouted bed made of Plexiglas that used 60° conical shape base. Radial concentration of particles (glass and steel beads) at various bed heights and different flow patterns were measured using sophisticated optical probes. Stochastic Genetic Algorithm (GA) has been found better than deterministic search for study mutation of process variables of the non-linear bed. Spouted bed behaved as hybrid system. Global GA could provide confirmed data and selected best operating conditions. Optimiza...