scholarly journals Effect of Operating Parameters on Performance of Ultrafiltration (UF) to Fractionate Catfish Protein Hydrolysate

2014 ◽  
Vol 70 (2) ◽  
Author(s):  
D. Novin ◽  
K. F. MD Yunos
Keyword(s):  
Ionic Strength ◽  
Isoelectric Point ◽  
Protein Hydrolysate ◽  
Operating Time ◽  
Regenerated Cellulose ◽  
Operating Parameters ◽  
Permeate Flux ◽  
Feed Concentration ◽  
Effect Of Ph

The effect of pH, ionic strength and feed concentration on performance of ultrafiltration (UF) to fractionate Catfish protein hydrolysate (CFPH) through 5kDa regenerated cellulose (RC) membrane was studied. The highest and lowest permeate flux belonged respectively to pH 9 and isoelectric point (IEP) with flux reduction of 5.75 L/m2.h at pH 9 and 10.98 L/m2.h at pH isoelectric through operating time. Further, by adding the salt, the highest permeate flux and transmission obtained at highest ionic strength of 0.15 M NaCl with 52.96% of transmission (in average). Then, the transmission reached to 54.18% by increasing feed concentration up to 1.5 mg/ml. 

scholarly journals The effects of operating parameters on spiramycin removal by nanofiltration membrane

2013 ◽  
Vol 68 (7) ◽  
pp. 1512-1519 ◽  
Author(s):  
Changwei Zhao ◽  
Weihong Fan ◽  
Tao Wang ◽  
Deyin Hou ◽  
Zhaokun Luan
Keyword(s):  
Operating Parameters ◽  
Operating Pressure ◽  
Nanofiltration Membrane ◽  
Flux Rate ◽  
Permeate Flux ◽  
Feed Concentration ◽  
Feed Temperature

Spiramycin removal from wastewater using four nanofiltration (NF) membranes (NF270, NF90, ESNA1-K1 and ESNA1-LF2-LD) was studied. The effects of operating pressure, feed temperature, feed concentration, cation and anion ions on the permeate flux rate and spiramycin rejection were investigated. The results show that increasing operating pressure resulted in the increase of both permeate flux and spiramycin rejection. The flux rate increased almost linearly with temperature, while the spiramycin rejection decreased. The permeate flux rate declined relatively with increasing feed concentration of spiramycin for NF270 and ESNA1-LF2-LD membranes compared with NF90 and ESNA1-K membranes. The presence of cations reduced spiramycin rejection, with the strength of influence for the NF270 NF membrane following the order Mg2+>Ca2+>K+. The presence of anions also resulted in decreased spiramycin rejection, the strength of the effect following the order NO3−>Cl−>SO42− for the NF270 membrane.

Nanofiltration process of glyphosate simulated wastewater

2012 ◽  
Vol 65 (5) ◽  
pp. 816-822 ◽  
Author(s):  
Z. Y. Liu ◽  
M. Xie ◽  
F. Ni ◽  
Y. H. Xu
Keyword(s):  
Operating Temperature ◽  
Retention Rate ◽  
Maximum Level ◽  
Transmembrane Pressure ◽  
Operating Parameters ◽  
Permeate Flux ◽  
Feed Concentration ◽  
Membrane Performance ◽  
Simulated Wastewater ◽  
Ph Range

Nanofiltration separation of glyphosate simulated wastewater was investigated using a DK membrane. The effects of operating parameters and the addition of impurities on membrane performance were studied in detail. It was found that at 20 °C, with a glyphosate concentration of 500 mg/L and pH of 2.96, the glyphosate retention rate and the membrane permeate flux increased slightly with increasing transmembrane pressure. With an increase in operating temperature, the permeate flux increased linearly while the retention rate decreased. The permeate flux and glyphosate retention rate decreased with increasing feed concentration. Within the pH range of 3–5, the glyphosate retention rate decreases with increasing pH and reaches a minimum at the isoelectric point of the membrane, while the permeate flux reaches a maximum level at this point. In the pH range of 5–11, with the increases of pH, the glyphosate retention rate increases and the permeate flux decreases. Glyphosate retention decreases slightly with increasing NaCl and phosphite concentrations. This can be explained in terms of the shielding phenomenon.

scholarly journals Performance of Single and Two-Stage Cross-Flow Ultrafiltration Membrane in Fractionation of Peptide from Microalgae Protein Hydrolysate (Nannochloropsis gaditana)

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 610
Author(s):  
Nur Izzati Md Saleh ◽  
Wan Azlina Wan Ab Karim Ghani ◽  
Siti Mazlina Mustapa Kamal ◽  
Razif Harun
Keyword(s):  
Molecular Weight ◽  
Flow Rate ◽  
Protein Hydrolysate ◽  
Cross Flow ◽  
Optimum Operating ◽  
Operating Parameters ◽  
Low Molecular Weight ◽  
Permeate Flux ◽  
Two Stage ◽  
Nannochloropsis Gaditana

Cross-flow ultrafiltration (UF) membrane with two different configurations; single (10 kDa and 5 kDa) and two-stage (10/5 kDa) in fractionating microalgae protein hydrolysate (MPH) were studied to obtain a low molecular weight of peptide. The effect of flow rate, trans-membrane pressure (TMP), and pH in fractionating MPH were evaluated based on permeate flux and peptide transmission. The results showed that, for single UF membrane, optimum operating parameters were at a flow rate of 23 mL/min, TMP of 1.5 bar, and pH of 9, with permeate flux of 43.65 L/m2 h (10 kDa) and 55.42 L/m2 h (5 kDa) and peptide transmission of 58.20% (10 kDa) and 67.34% (5 kDa). Meanwhile, for two-stage (10/5 kDa) UF membrane, the best parameters were observed at a flow rate of 23 mL/min, TMP of 1.5 bar, and pH of 2, with permeate flux of 69.85 L/m2 h and peptide transmission of 79.13%. Fractionation of MPH with two-stage UF membrane was observed to be better at producing a low molecular weight of peptide compared to single UF membrane. In conclusion, it was possible to produce permeate flux with a high amount of low molecular weight of peptide by controlling the operating parameters with the suitable configuration membrane.

scholarly journals Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process

Membranes ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 65
Author(s):  
Xueru Yan ◽  
Alexandre Favard ◽  
Stéphane Anguille ◽  
Marc Bendahan ◽  
Philippe Moulin
Keyword(s):  
Ionic Liquid ◽  
Flow Rate ◽  
Continuous Process ◽  
Hybrid Process ◽  
Absolute Pressure ◽  
Mechanical Resistance ◽  
Operating Parameters ◽  
Separation Performance ◽  
Feed Concentration ◽  
Time Operation

Membrane processes are promising methods to separate gases from feed streams without phase changing. A hybrid process, the combination of ionic liquids with a ceramic membrane (ILM), has been developed for humidity removal in a green continuous process. This new concept provides a more efficient and available ionic liquid (IL)-based membrane regeneration process, which just switches the moist feed stream to dry air. Furthermore, the ILM presents high stability and mechanical resistance during long-time operation. In addition, the influences of several operating parameters, including flow rate, temperature, absolute pressure, and feed concentration on process efficiency were investigated. The lower inlet flow rate was found to be favorable for drying humid air. Moreover, when the pressure increased, the mass of absorbed water was increased, while the feed concentration had no significant effects on the membrane separation performance. However, the operating temperature had a great effect on humidity removal. It is necessary to note that the processes at room temperature can limit the energy consumption. The absorbing process of ILM remained efficient after several absorption desorption cycles. Therefore, the new ILM hybrid process that has been developed has great potential for consecutive humidity removal processes.

scholarly journals The effect of pH and ionic strength of dissolution media on in-vitro release of two model drugs of different solubilities from HPMC matrices

2013 ◽  
Vol 111 ◽  
pp. 384-391 ◽  
Author(s):  
Kofi Asare-Addo ◽  
Barbara R. Conway ◽  
Hassan Larhrib ◽  
Marina Levina ◽  
Ali R. Rajabi-Siahboomi ◽  
...  
Keyword(s):  
Ionic Strength ◽  
In Vitro Release ◽  
Effect Of Ph ◽  
Vitro Release

Isolation of Immunoglobulin from Chicken Egg Yolk using Single-Stage Ultrafiltration with 100-kDa Regenerated Cellulose Membranes

2011 ◽  
Vol 7 (1) ◽  
Author(s):  
Jianguo Liu ◽  
Juan Yang ◽  
Hai Xu ◽  
Hu Zhu ◽  
Jianbo Qu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Egg Yolk ◽  
Single Stage ◽  
Regenerated Cellulose ◽  
Cellulose Membrane ◽  
Permeate Flux ◽  
Operational Parameters ◽  
Solution Ph ◽  
Chicken Egg ◽  
Chicken Egg Yolk

The aim of this work is to develop a membrane-based cost-effective process for the rapid isolation of immunoglobulin from chicken egg yolk. It was found that a single-stage ultrafiltration using a 100 kDa molecular weight cut-off regenerated cellulose membrane could be employed to isolate immunoglobulin from the crude feedstock. The effects of operational parameters (solution pH, ionic strength, stirring speed and permeate flux) on the transmission of immunoglobulin and the presence of impurity protein with molecular weight close to immunoglobulin were quantified using the parameter scanning ultrafiltration technique. Under optimized conditions, the purity of immunoglobulin obtained was about 85 percent after the single-stage ultrafiltration process, and the recovery of immunoglobulin from the feedstock was 91 percent.

Sorption of Eu(III) and Am(III) on attapulgite: effect of pH, ionic strength and fulvic acid

2010 ◽  
Vol 98 (1) ◽  
Author(s):  
Qiao Hui Fan ◽  
M. L. Zhang ◽  
Y. Y. Zhang ◽  
K. F. Ding ◽  
Z. Q. Yang ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Fulvic Acid ◽  
Effect Of Ph

Concentration and Desalination of Protein Derived from Tuna Cooking Juice by Nanofiltration

2013 ◽  
Vol 65 (4) ◽  
Author(s):  
Muhammadameen Hajihama ◽  
Wirote Youravong
Keyword(s):  
Membrane Filtration ◽  
Protein Concentration ◽  
Protein Hydrolysate ◽  
Salt Content ◽  
Cross Flow ◽  
Transmembrane Pressure ◽  
Permeate Flux ◽  
Batch Mode ◽  
Additional Process ◽  
Canning Industry

Tuna cooking juice is a co-product of tuna canning industry. It riches in protein, currently used for production of feed meal as well as protein hydrolysate. The finish products are usually in the form of concentrate, produced by evaporation process. However, evaporation is energy consumable process and the salt content level of the concentrate is often over the standard, thus required additional process for lowering salt content e.g. crystallization. The use of membrane technology, therefore, is of interest, since it required less energy and footprint compared with evaporation and is also able to reduce salt content of the concentrate. The aim of this study were to employ and select the membrane filtration process, and optimize the operating condition for protein concentration and desalination of tuna cooking juice. The results indicated that nanofiltration (NF) was more suitable than the ultrafiltration (UF) process, regarding the ability in protein recovery and desalination. The NF performance was evaluated in terms of permeation flux and protein and salt retentions. The protein and salt rejections of NF were 96 % and 5 %, respectively. The permeate flux(J) increased as transmembrane pressure (TMP) or cross flow rate (CFR) increased and the highest flux was obtained at TMP of 10 bar and CFR of 800 L/h. Operating with batch mode, the permeate flux was found to decrease as protein concentration increased, and at volume concentration factor about 4, the protein concentration  about 10% while salt removal was aproximately 70 % of the initial value. This work clearly showed that NF was successfully employed for concentration and desalination of protein derived from tuna cooking juice.

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