Study of the polymer concentration and polymer/crosslinker ratio effect on gelation time of a novel grafted polymer gel for water shutoff using a central composite design method

2015 ◽  
Vol 27 (2) ◽  
pp. 204-212 ◽  
Author(s):  
Rituraj Singh ◽  
Vikas Mahto
Keyword(s):  
Central Composite Design ◽  
Design Method ◽  
Polymer Concentration ◽  
Gelation Time ◽  
Polymer Gel ◽  
Ratio Effect ◽  
Grafted Polymer ◽  
Water Shutoff ◽  
Central Composite

Study of Salinity and pH Effects on Gelation Time of a Polymer Gel Using Central Composite Design Method

2011 ◽  
Vol 51 (3) ◽  
pp. 438-451 ◽  
Author(s):  
M. Baghban Salehi ◽  
M. Vafaie Sefti ◽  
A. Mousavi Moghadam ◽  
A. Dadvand Koohi
Keyword(s):  
Central Composite Design ◽  
Design Method ◽  
Gelation Time ◽  
Ph Effects ◽  
Polymer Gel ◽  
Central Composite

scholarly journals Optimization of Eugenol Extraction from Clove Oil using Response Surface Methodology

2015 ◽  
Vol 9 (11) ◽  
pp. 68
Author(s):  
Widayat Widayat ◽  
Hadiyanto Hadiyanto ◽  
Bambang Cahyono ◽  
Ngadiwiyana Ngadiwiyana
Keyword(s):  
Response Surface Methodology ◽  
Optimum Condition ◽  
Central Composite Design ◽  
Response Surface ◽  
Design Method ◽  
Main Process ◽  
Clove Oil ◽  
Design Variables ◽  
Central Composite

The objective of this research was to obtain optimum condition of eugenol production from clove oil using a central composite design method. The main process occured in the eugenol production was saphonification and neutralization processes. In order to optimize these processes, the ratio of NaOH/clove oil and temperature were studied as design variables i.e. ratio of NaOH/clove oil=1:2.5-1:3.5 while temperature was varied between 40 and 60oC. The yield of eugenol was considered as the main response in of this experiment. The result showed that the optimum condition was achieved when the temperature and the ratio of NaOH/clove oil were 50oC and 2.75:1, respectively and the yield was 39.17%.<br />

scholarly journals Preparation an Optimal Hydrogel of Water Shutoff for Iranian Oil Field

2021 ◽  
Vol 5 (1) ◽  
pp. 169-181
Author(s):  
Asefe Mousavi Moghadam ◽  
Mohsen Vafaie Sefti ◽  
Mahsa Baghban Salehi ◽  
Hassan Naderi
Keyword(s):  
Design Method ◽  
Gelation Time ◽  
Gel Strength ◽  
Oil Field ◽  
Effective Parameters ◽  
Water Shutoff ◽  
Two Factors ◽  
Burman Design ◽  
Rheological Experiments ◽  
Plackett Burman Design

Presenting a suitable hydrogel for water shutoff in Iranian oil field is based on gelation time and gel strength. Rheological behavior of gel was the main purpose of this research. To determine the gelation time, thermal stability and gel strength a plan of bottle tests were conducted by using the central composite design method with two factors. The hydrogels composed of AN125VLM and chromium triacetate as copolymer and crosslinker, respectively were recorded for 8 weeks.     Furthermore, the consistency modulus of the gels was measured by amplitude sweep tests using the Paar-Physica universal spectrometer, model MCR501. A hydrogel with 26,339 ppm concentration of copolymer and 0.12 ratio of crosslinker/copolymer and also gelation time of 2 days was selected as the optimal one. Also, it showed the maximum value of consistency modulus of 31,900 Pa among the other samples, tremendously, which showed the highest resistance against external stress. To ensure the gel strength among different effective parameters on the gel in porous media, a plan of rheological experiments were carried out. A 12 Run Plackett-Burman design was used for screening the eight parameters of NaCl, CaCl2, KCl and MgCl2 concentrations, temperature, pH, sodium lactate and nanoclay while keeping the optimal hydrogel component constant. Finally, it was found that temperature was the most effective parameter to control gelation time and also pH had negligible effect on the gelation time of this optimal gel.

Extraction of carotenoids from Lycium ferocissimum fruits for cotton dyeing: Optimization survey based on a central composite design method

2016 ◽  
Vol 17 (1) ◽  
pp. 36-43 ◽  
Author(s):  
Khaled Faidi ◽  
Noureddine Baaka ◽  
Saoussen Hammami ◽  
Ridha El Mokni ◽  
Zine Mighri ◽  
...  
Keyword(s):  
Central Composite Design ◽  
Design Method ◽  
Central Composite ◽  
Cotton Dyeing
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