نتایج جستجو برای: separation process
تعداد نتایج: 1416659 فیلتر نتایج به سال:
In this study, linearized transport pore model (LTPM) is applied for modeling nanofiltration (NF) membrane separation process. This modeling approach is based on the modified extended Nernst-Planck equation enhanced by Debye-Huckel theory to take into account the variations of activity coefficient especially at high salt concentrations. Rejection of single-salt (NaCl) electrolyte is inve...
1,3-butadiene, bd is produced from c4-cut by extractive distillation. the separation of 1,3-butadiene from c4-cut is not possible through the conventional distillation processes, because several mixtures have consisted of close boiling points constituents and make azeotrope. the basf extraction distillation process in bd unit of jam and amirkabir petrochemical company improves the relative vola...
this study aimed to explore concentration of a low grade sulfide-oxide lead-zinc sample containing 2.3% pb, 1.91% zn taken from changarzeh mine, south natanz, iran. the effects of different parameters such as type and dosage of collector, milling retention time, dosage of sodium sulfur and its preparation time, application of sodium silicate, ph and solid content were investigated in relation t...
In this paper, we overview recent advances towards the integration of process design, process control and process operability in separation and reaction/separation systems that were developed within our group at Imperial College. Based on novel mixed integer dynamic optimization algorithms, a simultaneous strategy is presented featuring high fidelity dynamic models, explicit consideration of st...
In order to study different methods of separating the seeds of cantaloupe (Cucumis melo L. var. reticualus) from the sorrounding fleshy tissues (placenta) and the effects of various treatments on seed germination characteristics, an experiment was conducted in Agricultural and Natural Research Center of Varamin, Iran, in 2009. In this research, which was based on a randomized complete blocks ...
the built up layer thickness in secondary deformation zone is one of the important parameters in metal cutting process. the built up layer (bul) is formed in second deformation zone near the tool-chip interface in the back of the chip. this parameter influences the tool life and machined surface quality. this bul should not be confused with the built up edge (bue). the deformation of the bul in...
Background: The purpose of the present study was to identify the most recent features and therapeutic approaches for separation anxiety disorder in children through systematic review of scientific resources. Conclusion: The results of this study showed that, after decades of recognition and introduction of separation anxiety disorder, this disorder is still considered as one of the most common...
چکیده ندارد.
Toluidine Blue O (TBO) is a cationic dye which is extensively used in the industries. In the present paper a simple and efficient wet chemical method was introduced for removal of TBO from waste aqueous solution. Magnetic multi-walled carbon nanotubes were synthesized using commercially available multi-wall carbon nanotubes and magnetic iron oxide nanoparticles which were examined for removal o...
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