Study on the Enzyme Desizing Process for Cotton Fabric Using Ultrasonication

2011 ◽  
Vol 331 ◽  
pp. 261-264 ◽  
Author(s):  
Qi Ming Zhao ◽  
Shan Yan Zhang
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Research Result ◽  
Strength Loss ◽  
Cotton Fabrics ◽  
Optimum Process ◽  
Process Conditions ◽  
Fabric Strength ◽  
Enzyme Dosage

The auxiliary devices of ultrasonic treatment was designed and manufactured. The cotton fabric was desized using 2000L desizing enzyme with the conventional enzyme desizing process and ultrasonic enzyme desizing process respectively. Through the orthogonal experiment, the optimum process conditions of conventional enzyme desizing process and ultrasonic enzyme desizing process were determined. For the conventional enzyme desizing process, the optimized desizing conditions of cotton fabrics were: desizing enzyme dosage was 1.5g/l, temperature was 80°C, PH value was 6, and time was 60mins. The optimum process conditions of ultrasonic enzyme desizing process were: desizing enzyme dosage was 1.5g/l, temperature was 50°C, PH value was 6 and time was 45minutes. The research result indicates that, under the same desizing condition, ultrasonication can improve the desizing percentage and whiteness of cotton fabric, but the fabric strength loss increases slightly. And for the same required desizing percentage, the ultrasonic enzyme desizing process saved time and reduced the temperature of experiments compared with traditional enzyme desizing process

Alkali Pre-Treatment Dyeing Technology for Hemp/Cotton/Polyester Knitted Fabric

2014 ◽  
Vol 915-916 ◽  
pp. 871-874 ◽  
Author(s):  
Xian Ping Zeng ◽  
Jin Fa Liu
Keyword(s):  
Cotton Fabric ◽  
Alkali Treatment ◽  
Orthogonal Experiment ◽  
Optimum Process ◽  
Knitted Fabric ◽  
Polyester Mesh ◽  
Liquor Ratio ◽  
Pre Treatment ◽  
C 50

In this paper, the hemp / cotton / polyester mesh knitted fabric (Han / C / T) is treated by alkali treatment, conventional dyeing and alkali pre-treatment dyeing. We have obtained the conclusion that alkali treatment improves the dyeing effect. Alkali pre-treatment dyeing was done after alkali treatment. The fabric dyeing effect is improved obviously. The optimum process come from orthogonal experiment (dyes 2.5% owf, Na2SO4 :30g/L, Na2CO3:10g/L, liquor ratio (1:50) and 90°C×50 min). Through this optimum process, dyeing effect for hemp / cotton / polyester mesh knitted fabric is close to the pure cotton fabric dyeing effect.

scholarly journals Study on Aqueous Enzymatic Extraction Process of Common Pistache Oil

2021 ◽  
Vol 251 ◽  
pp. 02058
Author(s):  
Feng Xuehua ◽  
Tao Ali ◽  
Song Zurong ◽  
Gong Panpan
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Extraction Process ◽  
Optimal Time ◽  
Process Conditions ◽  
Optimal Process ◽  
Enzymatic Extraction ◽  
Hydrolysis Time ◽  
Aqueous Enzymatic Extraction ◽  
The Common

The aqueous enzymatic method was applied to extract the common pistache oil and the optimal extraction process conditions were identified. By observing the effect of enzymatic hydrolysis time, pH value, temperature on aqueous enzymatic extraction process and performing the orthogonal experiment based on the single factor test, the optimal process parameters were obtained, namely, the optimal time, temperature, and pH value were respectively 3 h, 50℃, and 7 with a final extraction rate of 25.38 %.

The Preparation of Loaded Photocatalyst for Advanced Treatment of NH3-N in Coking Water

2013 ◽  
Vol 726-731 ◽  
pp. 2829-2832
Author(s):  
Yong Shu Tian ◽  
Run Xin Hou
Keyword(s):  
Photocatalytic Degradation ◽  
Orthogonal Experiment ◽  
Influence Factors ◽  
Advanced Treatment ◽  
Optimum Process ◽  
Process Conditions ◽  
Single Factor ◽  
Clay Brick ◽  
Degradation Rates ◽  
Single Factor Experiment

Photocatalyst of Fe-Sm-Yb modified TiO2 loaded on clay brick was prepared for degradation of NH3-N in coking water. The influence factors of NH3-N degradation rates were discussed by single factor experiment and orthogonal experiment. The optimum process conditions of photocatalytic degradation NH3-N in coking water were confirmed. The results show that NH3-N degradation rates 82.23% were highest in the conditions of pH 6.5, photocatalyst charge of 1.4 g, illumination for 6h, reaction at 55°C, calcination at 500°C.

The Discussion on Synthesis Process of Biurea by Hydrochloric Acid

2013 ◽  
Vol 448-453 ◽  
pp. 464-467 ◽  
Author(s):  
Meng Meng Qi ◽  
Ran Guo ◽  
Meng Su ◽  
Xiao Xue Cheng ◽  
Ling Zhang
Keyword(s):  
Hydrochloric Acid ◽  
Hydrazine Hydrate ◽  
Ph Value ◽  
Condensation Reaction ◽  
Complex Salt ◽  
Synthesis Process ◽  
Optimum Process ◽  
Process Conditions ◽  
Acid Method ◽  
Reaction Solution

By Series of comparative experiments, Factors of influencing the yield of biurea which is prepared from the condensation reaction between hydrazine hydrate and urea are studied, such as pH value, ratio of urea to hydrazine hydrate, temperature of reaction solution, reaction time and acid addition order. Under the optimum process conditions, the yield of biurea can reach over 97%, the biurea produced by hydrochloric acid method avoids large amounts of complex salt wastewater in condensation reaction of sulfuric acid method, and make the production process of biurea tends to be more environmentally friendly.

Green natural dye from Buddleja officinalis and its ultrasonic dyeing on cotton fabric

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Guizhen Ke ◽  
Ziying Zhao ◽  
Chen Shuhui ◽  
Jianqiang Li
Keyword(s):  
Cotton Fabric ◽  
Ph Value ◽  
Cotton Fabrics ◽  
Natural Dye ◽  
Color Strength ◽  
Content Type ◽  
Washing Fastness ◽  
Uv Transmittance ◽  
Protection Capability ◽  
Ultrasonic Conditions

Purpose The purpose of this paper is to explore a new eco-friendly green textile dyeing. Natural plant Buddleja officinalis is traditionally used as yellow pigment addition in rice. It is worth developing its application and dyeing performance in cotton fabric. Design/methodology/approach Buddleja officinalis dried flower was extracted with ethanol aqueous. The extraction conditions including ethanol concentration, material to liquor ratio, extract time and temperature were optimized. Then cotton fabrics were dyed with Buddleja officinalis extraction under conventional and ultrasonic conditions. The effects of dyeing time, bath ratio, pH value of dyeing bath, dyeing temperature and mordants on K/S values were studied and the resulting color strength obtained by conventional and ultrasonic dyeing were compared. The ultraviolet (UV) transmittance of Buddleja officinalis dyed cotton fabric was also evaluated. Findings The color strength of the fabric dyed with Buddleja officinalis under ultrasonic conditions was higher than that under conventional conditions. Alum, Fe and Cu as simultaneous mordants improved the K/S value of the dyed cotton fabrics. Both washing fastness and rubbing fastness were fairly good in all Buddleja officinalis dyed cotton fabrics, washing fastness = 3–4 and rubbing fastness = 4. What’s more, the dyed cotton fabrics showed lower transmittance values as compared to undyed cotton fabrics and indicated potential UV protection capability. Practical implications Buddleja officinalis can be a new natural dye source for the ultrasonic dyeing of cotton fabric. Originality/value It is for the first time that Buddleja officinalis is used as a natural dye in cotton fabric dyeing with less water and the dyeing using ultrasound has been found to have an obvious improvement in the color strength and color-fastness.

Study on Preparation of Nanocarbon Black-Polypropylene Electric Conduction Composite Materials

2013 ◽  
Vol 785-786 ◽  
pp. 183-186
Author(s):  
Zhi Jia Han ◽  
Sheng Fei Shen ◽  
Zai Yuan Li
Keyword(s):  
Carbon Black ◽  
Orthogonal Experiment ◽  
Optimum Process ◽  
Process Conditions ◽  
Mixing Times ◽  
Single Factor ◽  
Carbon Black Content ◽  
Polypropylene Composite ◽  
Polypropylene Composites ◽  
Single Factor Experiment

The paper has learned on the preparation of nanometer carbon black and polypropylene nanocarbon black-polypropylene composite material by using the small extrusion blending mixer which has been designed by our team. The results show that: Resistance of nanometer carbon black - polypropylene composites decreases with increasing carbon black content and extrusion mixing times. Through single factor experiment and orthogonal experiment to determine the optimum process conditions are at 260°C, nanocarbon black content 60%, extrusion mixing times 5. Under these conditions the resistance of nanometer carbon black-get polypropylene composites is 12.73 ohms.

Using Fly Ash to Preparare Polysilicate Aluminum Ferric Flocculant and Treating Coal Slurry

2015 ◽  
Vol 1092-1093 ◽  
pp. 966-971
Author(s):  
Jian Li Yang ◽  
Mei Li Du ◽  
Gang Li
Keyword(s):  
Fly Ash ◽  
Orthogonal Experiment ◽  
Curing Temperature ◽  
Molar Ratio ◽  
Optimum Process ◽  
Process Conditions ◽  
Coal Slurry ◽  
Element Ratio ◽  
Silicon Iron ◽  
Aluminum Iron

Solid waste resource utilization is a important way for sustainable economic development, environmental and ecological protection. Using adsorption and flocculation characteristics of fly ash to preparare fly ash-based inorganic flocculant and use it for treating slime water, make waste fly ash into treasure, not only solve environmental problems, but also has very important theoretical significance and application value.In this study, we use Na2CO3 melt to improve acid-soluble activity of fly ash, extract ideally the aluminum and iron silicon as active ingredients in the fly ash. On the basis of the solubilization experiment, we design orthogonal experiment about larger impact several factors on the the flocculant preparation of process: silicon and aluminum element ratio, silicon iron element ratio and curing temperature, the orthogonal experiment results show that the best optimum process conditions is: Si: Al (mole ratio) is 1:0.5, Si: Fe (molar ratio) is 1:0.5, curing temperature is 60°C, curing time is 2 hours. Finally, we use poly silicate aluminum iron flocculants prepared to do flocculation test on slime water, determine the best flocculation conditions is: when we treat slime water which concentration is 8g/L and volume is 250mL, the optimum dosage of polysilicate aluminum iron is 1.3mL, the transmittance gets to 74.2%, the flocculation effect is the best.

Study on Dyeing of the Plasma Modification Silk Fabric in Supercritical Carbon Dioxide

2011 ◽  
Vol 175-176 ◽  
pp. 661-666 ◽  
Author(s):  
Jun Yan ◽  
Lai Jiu Zheng
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Plasma Modification ◽  
Silk Fabric ◽  
Dyeing Process ◽  
Before And After ◽  
Fabric Strength ◽  
Supercritical Carbon

A study has been conducted into the dyeing of silk fabric in supercritical carbon dioxide. In order to reach better dyeing effect, plasma modifying is used to silk. Plasma modifying can decompose disulfide bond of the protein fiber, change the state of scale layer and break silk gum of fiber so that dyestuff could infiltrate. Factors of plasma modifying are fixed, including pH value, processing time. And they affect the values of fabric colour feature and fabric strength. In this work, C.I. Disperse Blue-77 and C.I. Disperse Yellow E-3G are used by combining orthogonal experiment and single factor analysis. During dyeing process, temperature and pressure have a great impact on the result. Modification process and dyeing process are optimized, and the best process is determined. The results presented in this study show dyestuff can infiltrate through modified fabric easily. Through the testing, the washing fastness and rubbing fastness of silk fabric after being modified are improved. The changes between before and after dyeing are analyzed by scanning electron microscope and infrared spectrometer. It is showed that modified fabric obtains a better effect.

Optimization of Degrading Poly-Containing Wastewater Conditions of Mixed Bacteria by Orthogonal Experiments

2012 ◽  
Vol 550-553 ◽  
pp. 2386-2390
Author(s):  
Jiang Hong Liu ◽  
Rui Dan Xu ◽  
Yang Pan ◽  
Yuan Ying Wang
Keyword(s):  
Ph Value ◽  
Nitrogen Sources ◽  
Inoculum Size ◽  
Optimum Process ◽  
Process Conditions ◽  
Activation Time ◽  
Orthogonal Experiments ◽  
Phosphorus Sources ◽  
Initial Ph ◽  
Mixed Bacteria

The factor influencing on the mixed bacteria to degrade wastewater containing poly-containing conditions were optimized. Crude oil as a source of carbon, the effects of nitrogen sources, phosphorus sources, time, inoculation amount, temperature, mineralization content, initial pH value and activation time on degrading poly-containing wastewater were investigated by experiment of single factor and orthogonal experiments. The optimum process conditions were as follows: polyacrylamide (HPAM) which comes from waste water as a source of nitrogen, without other nitrogen source, K2HPO4 was phosphorus sources, the microorganisms activation time was 2, incubation time was 3d, initial pH value was 7, the inoculum size was 5%(v/v), incubation temperature was 35°C, the mineralization degree was 4000 mg•L-1. The main factors affecting degradation rate was nitrogen sources, time, pH, activation time, inoculum size and mineralization content.

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