scholarly journals Increasing the Efficiency of Vacuum Belt Filter in Gol-E-Gohar Iron Ore Concentrate Production by Adding Surfactants

2021 ◽  
Vol 6 (1) ◽  
pp. 18
Author(s):  
Ahmad Azargoon Jahromi ◽  
Hojat Naderi ◽  
Ali Dehghani
Keyword(s):  
Sodium Dodecyl ◽  
Hard Water ◽  
Solid Content ◽  
Filtration Time ◽  
Sodium Lauryl Ether Sulfate ◽  
Cake Moisture ◽  
Similar Chemical ◽  
Lauryl Ether ◽  
Vacuum Belt ◽  
Filter Aid

In this research, filtration experiments were carried out by four types of surfactants as filter aid. Sodium dodecyl sulfate and sodium lauryl ether sulfate as anionic surfactant (SDS and SLES), polyethylene glycol as nonionic surfactant (PEG) and cetyl trimethylammonium bromide as cationic surfactant (CTAB) were used to were used in order to evaluate their effects on moisture reduction of concentrate and improvement of the filtration process. All of the tests were done at the optimal conditions include 60 KPa vacuum pressure, 120 s filtration time, 105 microns particle size and 60% (w/w) solid content of pulp. Results showed that in all of the tests, cake moisture decreased by adding surfactants; however, anionic surfactants SDS and SLES were better than other chemicals. By adding 100 g/t SDS and SLES to the pulp, the filter cake moisture content was reduced by 2%. SDS and SLES improves filtration performance by increasing the ratio of throughput to moisture. At the concentration of 100 g per ton SDS and SLES, the highest throughput and lowest moisture was achieved. Although both of SDS and SLES have similar chemical structure and action, SLES was selected due to better solubility in hard water, economic justification and availability.

scholarly journals Decellularization of Kidney Tissue: Comparison of Sodium Lauryl Ether Sulfate and Sodium Dodecyl Sulfate for Allotransplantation in Rat

2020 ◽  
Author(s):  
Mohammad Amin Keshvari ◽  
Alireza Afshar ◽  
Sajad Daneshi ◽  
Arezoo Khoradmehr ◽  
Mandana Baghban ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Kidney Tissue ◽  
Dna Quantification ◽  
Sodium Lauryl Ether Sulfate ◽  
Ether Sulfate ◽  
Lauryl Ether ◽  
Dodecyl Sulfate ◽  
Decellularized Scaffolds

Chronic kidney diseases (CKD) and end stage renal disease (ESRD) are growing threats worldwide. Tissue engineering is a new hope to surpass the current limitations such as the shortage of donor. To do so, the first step would be fabrication of an intact decellularized kidney scaffold. In the current study, an automatic decellularization device was developed to perfuse and decellularize male rats' kidneys using both sodium lauryl ether sulfate (SLES) and sodium dodecyl sulfate (SDS) and to compare their efficacy in kidney decellularization and post-transplantation angiogenesis. After anesthesia, kidneys were perfused with either 1% SDS solution for 4 h or 1% SLES solution for 6 h. The decellularized scaffolds were stained with hematoxylin and eosin (H&E), periodic acid Schiff (PAS), Masson’s trichrome, and alcian blue to determine cell removal and glycogen, collagen and glycosaminoglycans (GAGs) contents, respectively. Moreover, scanning electron microscopy (SEM) was performed to evaluate the cell removal and preservation of microarchitecture of both SDS and SLES scaffolds. Additionally, DNA quantification assay was applied for all groups in order to measure residual DNA in the scaffolds and normal kidney. In order to demonstrate biocompatibility and bioactivity of the decellularized scaffolds, allotransplantation was performed in back muscle and angiogenesis was evaluated. Complete cell removal in both SLES and SDS groups was observed in SEM and DNA quantification assays. Moreover, the extracellular matrix (ECM) architecture of rat kidney in the SLES group was significantly preservation better than the SDS group was shown. The formation of blood capillaries and vessels were observed in the kidney allotransplantations in both SLES and SDS decellularized kidneys. In conclusion, we demonstrated that both SLES and SDS could be promising tools in kidney tissue engineering. The better preservation of ECM than SDS, introduces SLES as the solvent of choice for kidney decellularization. ¬¬

scholarly journals Decellularization of kidney tissue: Comparison of sodium lauryl ether sulfate and sodium dodecyl sulfate for allotransplantation in rat

2021 ◽  
Author(s):  
Mohammad Amin Keshvari ◽  
Alireza Afshar ◽  
Sajad Daneshi ◽  
Arezoo Khoradmehr ◽  
Mandana Baghban ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Extracellular Matrix ◽  
Sodium Dodecyl ◽  
Kidney Tissue ◽  
Sodium Lauryl Ether Sulfate ◽  
Ether Sulfate ◽  
Lauryl Ether ◽  
Decellularized Scaffolds ◽  
Scanning Electron

Abstract Background: Chronic kidney diseases and end stage renal disease are growing threats worldwide. Tissue engineering is a new hope to surpass the current limitations such as the shortage of donor. To do so, the first step would be fabrication of an intact decellularized kidney scaffold. In the current study, an automatic decellularization device was developed to perfuse and decellularize male rats' kidneys using both sodium lauryl ether sulfate (SLES) and sodium dodecyl sulfate (SDS) and to compare their efficacy in kidney decellularization and post-transplantation angiogenesis.Methods: After anesthesia, kidneys were perfused with either 1% SDS solution for 4 h or 1% SLES solution for 6 h. The decellularized scaffolds were stained with hematoxylin and eosin, periodic acid Schiff, Masson’s trichrome, and Alcian blue to determine cell removal and glycogen, collagen and glycosaminoglycan contents, respectively. Moreover, scanning electron microscopy was performed to evaluate the cell removal and preservation of microarchitecture of both SDS and SLES scaffolds. Additionally, DNA quantification assay was applied for all groups in order to measure residual DNA in the scaffolds and normal kidney. In order to demonstrate biocompatibility and bioactivity of the decellularized scaffolds two tests were done. The scaffolds were recellularized with the human umbilical cord mesenchymal stromal/stem cells (hUC-MSCs). In addition, the allotransplantation was performed in back muscle and angiogenesis was evaluated.Results: Complete cell removal in both SLES and SDS groups was observed in scanning electron microscopy and DNA quantification assays. Moreover, the extracellular matrix architecture of rat kidney in the SLES group was significantly preserved better than the SDS group. The hUC-MSCs were successfully migrated from the cell culture plate surface into the SDS and SLES decellularized scaffolds. The formation of blood capillaries and vessels were observed in the kidney allotransplantation in both SLES and SDS decellularized kidneys.Conclusions: We demonstrated that both SLES and SDS could be promising tools in kidney tissue engineering. The better preservation of extracellular matrix than SDS, introduces SLES as the solvent of choice for kidney decellularization.

scholarly journals Decellularization of kidney tissue: comparison of sodium lauryl ether sulfate and sodium dodecyl sulfate for allotransplantation in rat

2021 ◽  
Author(s):  
Mohammad Amin Keshvari ◽  
Alireza Afshar ◽  
Sajad Daneshi ◽  
Arezoo Khoradmehr ◽  
Mandana Baghban ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Kidney Tissue ◽  
Sodium Lauryl Ether Sulfate ◽  
Ether Sulfate ◽  
Lauryl Ether ◽  
Dodecyl Sulfate

Surfactant Treatment and Leaching Combination Process for Preparation of Deproteinized Natural Rubber Latex

2015 ◽  
Vol 659 ◽  
pp. 500-504
Author(s):  
Jirapornchai Suksaeree ◽  
Wirach Taweepreda ◽  
Wiwat Pichayakorn
Keyword(s):  
Natural Rubber ◽  
Skin Irritation ◽  
Sodium Dodecyl ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Combination Process ◽  
Surfactant Treatment ◽  
Leaching Process ◽  
Sodium Lauryl Ether Sulfate ◽  
Cocamidopropyl Betaine

This study aimed to improve the efficacy of protein removal from fresh natural rubber latex (NRL) and to decrease the production cost by using surfactant treatment and leaching combination processes. The 0.5-3% anionic surfactants, i.e. sodium dodecyl sulfate or sodium lauryl ether sulfate, nonionic tween80 surfactant, or an amphoteric cocamidopropyl betaine surfactant was used in surfactant treatment process. Moreover, water, aqueous surfactant solutions, and/or 1-5% organic solvents (i.e. ethanol, isopropanol and/or acetone) was then used in leaching process. The fresh NRL was preserved by paraben compounds in the presence of surfactant at ambient temperature for 20-120 minutes, and then centrifuged. This might prevent the skin irritation of deproteinized NRL (DNRL) caused by ammonium stabilizer that normally uses in latex industry. The upper rubber mass was then leached for upto three cycles with leaching solvents, and then finally redispersed in distilled water. The milky-like DNRLs were obtained by these processes. Their dry rubber contents were 41-47% that could be adjusted. Their viscosities were 9-13 centipoises with the pH of 6.04-6.61. The protein residues in these DNRLs were 0.0000-0.3244% which were lower than that of fresh NRL (1.2428%). These indicated the efficacy of studied deproteinization process for 73.90-100.0%. Types and concentrations of surfactant, incubation times, leaching solvents, and cycles of leaching process affected the efficacy of deproteinization process. Moreover, the properties of these dried films were not different from that of fresh NR film. This DNRL could be further used for several applications including medical skin products.

scholarly journals Isolation and Characterization in a Soil Conditioned With Foaming Agents of a Bacterial Consortium Able to Degrade Sodium Lauryl Ether Sulfate

2020 ◽  
Vol 11 ◽  
Author(s):  
Ludovica Rolando ◽  
Paola Grenni ◽  
Jasmin Rauseo ◽  
Tanita Pescatore ◽  
Luisa Patrolecco ◽  
...  
Keyword(s):  
Bacterial Consortium ◽  
Foaming Agents ◽  
Sodium Lauryl Ether Sulfate ◽  
Isolation And Characterization ◽  
Ether Sulfate ◽  
Lauryl Ether

scholarly journals Polycation–Sodium Lauryl Ether Sulfate-Type Surfactant Complexes: Influence of Ethylene Oxide Length

2015 ◽  
Vol 119 (20) ◽  
pp. 6338-6347 ◽  
Author(s):  
Leo F. W. Vleugels ◽  
Jennifer Pollet ◽  
Remco Tuinier
Keyword(s):  
Ethylene Oxide ◽  
Sodium Lauryl Ether Sulfate ◽  
Ether Sulfate ◽  
Lauryl Ether

Formulation of Face-Wash from Coconut (Cocos nucifera (L.)) Oil in Ben Tre Province, Vietnam

2021 ◽  
Vol 882 ◽  
pp. 183-190
Author(s):  
Tran Thi Kim Ngan ◽  
Tran Thien Hien ◽  
Le Thi Hong Nhan ◽  
Xuan Tien Le
Keyword(s):  
Cocos Nucifera ◽  
Personal Care Products ◽  
Coconut Oil ◽  
Sulfate Solution ◽  
Lauryl Sulfate ◽  
Personal Care ◽  
Sodium Lauryl Ether Sulfate ◽  
Lauryl Ether ◽  
Human Care ◽  
Cocos Nucifera L

Today, the need for human care and beauty is increasing. The use of personal care products, especially those from nature, has been given special attention by consumers. With diverse features and good effects on the human body, especially the skin, coconut oil is being cared for by many manufacturers. With the aim of diversifying personal care products from coconut oil, this research has initially achieved positive results. Soap saponified as raw soap is considered to have good cleaning effect (better than sodium lauryl sulfate solution (SLS) when diluted to the same concentration). The combination of 10% crude soap and 4% sodium lauryl ether sulfate (SLES) surfactants formulate cleansing products with effective cleansing properties. Ingredients auxiliary cleaners, moisturizing, and softening, antioxidants are added with the appropriate content to improve the disadvantages of raw soap. The personal care products that have been studied have the potential to enter the cosmetic market and attract many consumers.

scholarly journals Preparation of Co-Amorphous Systems by Freeze-Drying

Pharmaceutics ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 941
Author(s):  
Melvin Wostry ◽  
Hanna Plappert ◽  
Holger Grohganz
Keyword(s):  
Amino Acid ◽  
Freeze Drying ◽  
Sodium Dodecyl ◽  
Solid Content ◽  
Water Soluble ◽  
Tween 20 ◽  
Scanning Calorimetry ◽  
Total Solid Content ◽  
Amorphous Systems ◽  
Freeze Dried

Freeze-drying was evaluated as a production technique for co-amorphous systems of a poorly water-soluble drug. Naproxen was freeze-dried together with arginine and lysine as co-former. To increase the solubility of naproxen in the starting solution, the applicability of five surfactants was investigated, namely sodium dodecyl sulfate, pluronic F-127, polyoxyethylene (40) stearate, tween 20 and TPGS 1000. The influence of the surfactant type, surfactant concentration and total solid content to be freeze-dried on the solid state of the sample was investigated. X-ray powder diffraction and differential scanning calorimetry showed that the majority of systems formed co-amorphous one-phase systems. However, at higher surfactant concentrations, and depending on the surfactant type, surfactant reflections were observed in the XRPD analysis upon production. Crystallization of both naproxen and amino acid occurred from some combinations under storage. In conclusion, freeze-drying was shown to be a feasible technique for the production of a selection of co-amorphous drug–amino acid formulations.

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