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Papers by fatkur rohman
Desalination, 2011
Electrodialysis (ED) is a feasible method for acid recovery where it can separate and also concen... more Electrodialysis (ED) is a feasible method for acid recovery where it can separate and also concentrate the separated acid involved from the feed stream. To ensure maximum ED performances, the optimum operating conditions must be obtained. In this work, a dynamic optimization i.e. the orthogonal collocation method was applied to obtain those optimum operating conditions. The mathematical model of the
Chemical Engineering Journal, 2010
a b s t r a c t Electrodialysis (ED) is a feasible method for acid recovery because it has the ca... more a b s t r a c t Electrodialysis (ED) is a feasible method for acid recovery because it has the capability of separating ionic chemicals from non-ionic chemicals in process or waste streams to achieve product purity or eliminate wastes. At the same time, it can also enrich the separated chemicals. In this work, a model based on first principle was developed in order to understand the behavior of electrodialysis process. The Nernst-Planck derived relationship was used to build the ED process model which contains a set of ordinary differential equations (ODE). A degree of freedom analysis was carried out and a unique solution with 38 unknown parameters were identified. The parameters were determined from the literature and various equations. The developed model was then simulated and the results were compared to that from previous experimental work. The accuracy of the developed model was high with 99% degree of confidence. The sensitivity analysis of various ED parameters towards its performances was also analyzed. It was found that process time and energy consumption increased when higher initial HCl concentration in the dilute and concentrate tanks, higher current density and lower V conc /V dil ratio were applied. However, the effect of flowrate on process time and energy consumption was found to be insignificant.
pembahasan proses kurikulum PAI
Disusun untuk memenuhi tugas mata kuliah "Pengembangan Kurikulum PAI" Dosen Pengampu: Afiful Ikhw... more Disusun untuk memenuhi tugas mata kuliah "Pengembangan Kurikulum PAI" Dosen Pengampu: Afiful Ikhwan, M.Pd.I Kelompok 3 Disusun Oleh:
Drafts by fatkur rohman
Desalination, 2011
Electrodialysis (ED) is a feasible method for acid recovery where it can separate and also concen... more Electrodialysis (ED) is a feasible method for acid recovery where it can separate and also concentrate the separated acid involved from the feed stream. To ensure maximum ED performances, the optimum operating conditions must be obtained. In this work, a dynamic optimization i.e. the orthogonal collocation method was applied to obtain those optimum operating conditions. The mathematical model of the
Chemical Engineering Journal, 2010
a b s t r a c t Electrodialysis (ED) is a feasible method for acid recovery because it has the ca... more a b s t r a c t Electrodialysis (ED) is a feasible method for acid recovery because it has the capability of separating ionic chemicals from non-ionic chemicals in process or waste streams to achieve product purity or eliminate wastes. At the same time, it can also enrich the separated chemicals. In this work, a model based on first principle was developed in order to understand the behavior of electrodialysis process. The Nernst-Planck derived relationship was used to build the ED process model which contains a set of ordinary differential equations (ODE). A degree of freedom analysis was carried out and a unique solution with 38 unknown parameters were identified. The parameters were determined from the literature and various equations. The developed model was then simulated and the results were compared to that from previous experimental work. The accuracy of the developed model was high with 99% degree of confidence. The sensitivity analysis of various ED parameters towards its performances was also analyzed. It was found that process time and energy consumption increased when higher initial HCl concentration in the dilute and concentrate tanks, higher current density and lower V conc /V dil ratio were applied. However, the effect of flowrate on process time and energy consumption was found to be insignificant.
pembahasan proses kurikulum PAI
Disusun untuk memenuhi tugas mata kuliah "Pengembangan Kurikulum PAI" Dosen Pengampu: Afiful Ikhw... more Disusun untuk memenuhi tugas mata kuliah "Pengembangan Kurikulum PAI" Dosen Pengampu: Afiful Ikhwan, M.Pd.I Kelompok 3 Disusun Oleh: