scholarly journals INNOVATIVE COTTON OIL REFINING TECHNOLOGY

2020 ◽  
pp. 74-79
Keyword(s):  
Electromagnetic Field ◽  
Quality Improvement ◽  
Sodium Hydroxide ◽  
Cottonseed Oil ◽  
Oil Refining ◽  
Alkaline Solutions ◽  
Intensity Increase ◽  
Refined Oil ◽  
Yield And Quality ◽  
Cotton Oil

The results of partial and final refining of raw cottonseed oil by solution of aluminates and and sodium hydroxide are given. The intensification of the technological process is carried out by the treatment of alkaline solutions by exposure to electromagnetic field intensity. Increase in yield and quality improvement of refined oil is achieved.

Silicon Promotes Physiological Adjustments, Fiber Yield and Quality Improvement of Naturally Colored Cotton BRS Safira

2021 ◽  
pp. 1-11
Author(s):  
Rener Luciano de Souza Ferraz ◽  
Patrícia da Silva Costa ◽  
Ivomberg Dourado Magalhães ◽  
Pedro Roberto Almeida Viégas ◽  
Igor Eneas Cavalcante ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Yield And Quality ◽  
Fiber Yield ◽  
Colored Cotton ◽  
Physiological Adjustments ◽  
Naturally Colored Cotton

Cotton oil refining method

2021 ◽  
Vol 11 (4) ◽  
pp. 1886-1892
Author(s):  
Sunnatullo Shamsulloyevich Ismatov
Keyword(s):  
Oil Refining ◽  
Refining Method ◽  
Cotton Oil

scholarly journals Nanofiltration of Succinic Acid in Strong Alkaline Conditions

Membranes ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 147 ◽  
Author(s):  
Schlackl ◽  
Herchl ◽  
Samhaber
Keyword(s):  
Electron Microscopy ◽  
Succinic Acid ◽  
Sodium Hydroxide ◽  
Alkaline Solutions ◽  
Fiber Production ◽  
Degree Of Dissociation ◽  
Alkaline Conditions ◽  
Separation Behavior ◽  
Scanning Electron ◽  
Disodium Succinate

Nanofiltration is considered to be an appropriate separation technique in the production of bio-based materials. For the utilization of process streams from the viscose-fiber production, understanding the separation behavior of organic compounds in highly alkaline solutions is necessary. Experiments with succinic acid in sodium hydroxide (NaOH) solutions with varying concentrations up to 5 mol L−1 were performed with the NP030 membrane from Microdyn Nadir. Furthermore, experiments with aqueous disodium succinate and solutions of sodium sulfate in sodium hydroxide were carried out. The influence of concentration ratios and temperature was studied. The Spiegler and Kedem model as well as the Pusch model were applied to fit the experimental data. Additionally, scanning electron microscopy (SEM) and infrared (ATR–IR) measurements were performed to validate the chemical and thermomechanical stability of the membrane. The succinic acid retention varies with its degree of dissociation. In a fully dissociated form, the NaOH concentration shows no impact on the retention. In contrast, the retention of sulfate decreases with increasing NaOH concentration.

The Role of Sodium Hydroxide in the System C3A-CaSO4-H2O at 30°C

1986 ◽  
Vol 85 ◽  
Author(s):  
Hanaa Youssef Ghorab ◽  
Safaa Hussein Abou El Fetouh
Keyword(s):  
Solid Solution ◽  
Sodium Hydroxide ◽  
Calcium Hydroxide ◽  
Hydration Product ◽  
Ion Concentration ◽  
Molar Ratio ◽  
Alkaline Solutions ◽  
Hydration Reaction ◽  
X Ray Diffraction

ABSTRACTThe hydration reaction of C3A with gypsum (molar ratio = 1:1.5) has been studied in water and in sodium hydroxide solutions at 30°C. The hydration product were analyzed microscopically and by means of X-ray diffraction. The concentration of sulfate and aluminum in solution was determined spectrophotometrically. In the absence of alkali, the amount of ettringite formed passes through a maximum and is accompanied by almost complete consumption of sulphate ion in solution. Alkali depresses the formation of ettringite and accelerates that of calcium hydroxide. The monosulfate hydrate appears immediately in alkaline solutions and water then reappears after a day as a solid solution with the tetracalcium aluminate hydrate. The formation of the monophase solid solution is accompanied by the consumption of C3A, ettringite, and calcium hydroxide and by an increase in the amount of the dissolved aluminum. The presence of alkali markedly increases the initial sulfate ion concentration from solution.

Optimization of Planning and Scheduling of Refinery Product Based on Downstream Requirements

2016 ◽  
Author(s):  
Guoxi He ◽  
Yongtu Liang ◽  
Limin Fang ◽  
Qi Zheng ◽  
Liying Sun
Keyword(s):  
Crude Oil ◽  
Production Scheduling ◽  
Oil Refining ◽  
Production Cycle ◽  
Nonlinear Method ◽  
Scheduling Optimization ◽  
Planning And Scheduling ◽  
Refined Oil ◽  
Scheduling Model ◽  
Mixed Crude

The disconnect between the optimization systems of upstream production and downstream demand poses a legitimate problem for China’s refined oil industry in terms of overproduction waste. Established methods only partially model the refinery system and are unable to integrate detailed production plans or meet market demands. Therefore, the research on production scheduling optimization combined with the demand of downstream pipeline network has very real applications that not only reduce the consumption of human/material resources, but also increase economic efficiency. This paper aims to optimize the production scheduling of refined oil transportation based on the demand of downstream product pipelines by analyzing the relationships between crude oil supply, refinery facility capacities and refinery tanks storage. The new model will minimize the refined production surplus therefore minimizing refinery costs and wastage. This is done by implementing models custom designed to optimize the three subsystems of the overall process: oil product blending scheduling optimization, producing and processing equipment scheduling optimization, and mixed crude oil scheduling optimization. We first analyzed the relationship between all the production units from the crude oil to the distributional destinations of oil products. A mathematical model of the refinery production scheduling was then built with minimum total surplus inventory as the objective function. We assumed a known downstream demand and used a step by step model to optimize oil stocks. The oil blending plan, production scheduling, amount of crude oil, and refined oil mixing ratios were all derived from the model using three methods: a nonlinear method called Particle Swarm Optimization (PSO), the simplex method and the enumeration method. The evidence laid out in this paper verifies our models functionality and suggests that systems can be significantly optimized by using these methods which can provide solutions for industries with similar challenges. Optimization of the refinery’s overall production process is achieved by implementing models for each of the three distinguished subsystems: oil blending model, plant scheduling model, and the mixed crude oil refining model. The demand dictates the final production quantities. From those figures we are able to place constraining limits on the input crude oil. The refined oil production scheme is continuously enhanced by determining the amount of constituent feed on the production equipment according to the results of previous production cycle. After optimization, the minimum surplus inventory of the five oil components approach their lower limits that were calculated using our models. We compare the literature on scheduling optimization challenges both in China and abroad while providing a detailed discussion of the present situation of Chinese refineries. The interrelationships of production processes on each other are revealed by analyzing the system and breaking it down to three fundamental parts. Basing the final production predictions on the downstream demand, we are able to achieve a minimum refinery surplus inventory by utilizing a comprehensive refinery scheduling model composed of three sub-models.

Recovery of Sulfur-Alkaline Waste by Processing into Cellular Silicate Material

2018 ◽  
Vol 22 (10) ◽  
pp. 24-27
Author(s):  
Ya I. Vaisman ◽  
I.S. Glushankova ◽  
Yu.A. Ketov ◽  
L.V. Rudakova ◽  
M.P. Krasnovskikh
Keyword(s):  
Amorphous Silicon ◽  
Sodium Hydroxide ◽  
Silicon Oxide ◽  
Silicate Glasses ◽  
Alkaline Solutions ◽  
Organosulfur Compounds ◽  
Silicate Material ◽  
Mechanism Of Formation ◽  
Alkaline Waste ◽  
Amorphous Silicon Oxide

The formation of cellular silicate glasses from sulfide-alkaline solutions and amorphous silicon oxide has been studied. The mechanism of formation of silicates from sodium hydroxide and amorphous silicon oxide and processes of gasification with the participation of the organic component of waste are considered. Technological solutions for recovery of sulfide-alkaline solutions are proposed. At the same time, the process of recovery consists in mixing sulfuralkaline waste with natural amorphous silicon oxide, tripoli, and further roasting the resulting composition at glass formation temperatures. As a result of heat treatment, sulfur from organosulfur compounds is oxidized to sulfur (IV), and sodium hydroxide, after dehydration, enters in composition of the resulting vitreous silicate cellular material.

Growth, yield and quality improvement of potato tubers through the application of seaweed sap derived from the marine alga Kappaphycus alvarezii

2017 ◽  
Vol 29 (6) ◽  
pp. 3253-3260 ◽  
Author(s):  
Biswajit Pramanick ◽  
Koushik Brahmachari ◽  
B. S. Mahapatra ◽  
Arup Ghosh ◽  
Dibakar Ghosh ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Marine Alga ◽  
Kappaphycus Alvarezii ◽  
Growth Yield ◽  
Potato Tubers ◽  
Yield And Quality

scholarly journals Plant Availability of Magnesium in Typical Tea Plantation Soils 

2020 ◽  
Author(s):  
Qunfeng Zhang ◽  
Dandan Tang ◽  
Xiangde Yang ◽  
Saipan Geng ◽  
Ying He ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Tea Plant ◽  
Tea Plantation ◽  
Fertilizer Use Efficiency ◽  
Fertilizer Use ◽  
Plant Cultivation ◽  
Yield And Quality ◽  
Tea Quality ◽  
Use Efficiency ◽  
Tea Plants

Abstract Background and aims: Magnesium (Mg) plays important roles in improving the yield and quality of tea. However, Mg deficiency frequently occurs in acidic tea plantation soil. Methods: Tea plants were pot-cultivated in 12 typical tea plantations soils amended with and without Mg fertilizer. Exchangeable Mg (Ex-Mg) concentration in soils were quantitatively extracted using four extraction solutions (Mehlich-3, BaCl2, CaCl2 and NH4OAC). Plant availability of Mg was evaluated by Mg uptake and use efficiency, as well as its association with quality-components in tea plants.Results: Ex-Mg in soils were extracted most efficiently by Mehlich-3, while Mg concentrations in tea plant tissue higher correlated with Ex-Mg extracted by CaCl2 than other extraction solutions. Mg fertilizer use efficiency in tea plant varied from 6.08% to 29.56 %, and Mg fertilization significantly improve green tea quality by decreasing the ratio of total polyphenol to amino acid in tea leaves (24-60%). Moreover, the effect of Mg application on tea quality improvement and the use efficiency of Mg fertilizer both negatively correlated with total Mg concentration (r = -0.94 and -0.63, respectively) and nitrogen (N) level (r = -0.61 and -0.51, respectively) in soils prior to tea plant cultivation.Conclusions: CaCl2 could be recommended for plant-available Mg extraction in tea plantation soil, and Mg fertilizer use efficiency could be affected and predicted by total N and Mg status in soils prior to tea plant cultivation, providing a potential theoretical for guidance of Mg fertilization for tea yield and quality improvement in tea plantation management.

scholarly journals Physicochemical features, functional characteristics, and health benefits of cottonseed oil: a review

2022 ◽  
Vol 82 ◽  
Author(s):  
M. A. Zia ◽  
S. H. Shah ◽  
S. Shoukat ◽  
Z. Hussain ◽  
S. U. Khan ◽  
...  
Keyword(s):  
Fiber Quality ◽  
Health Benefits ◽  
Cottonseed Oil ◽  
Vital Role ◽  
Dual Use ◽  
Cotton Crop ◽  
Refined Oil ◽  
Physicochemical Features ◽  
Cotton Seeds ◽  
Processing Steps

Abstract Vegetable oils have their specific physicochemical properties due to which they are playing vital role in human nutritional diet for health benefits. Cottonseed oil is obtained from various species of cotton seeds that are famous to be grown mainly for their fiber quality. The most prominently used specie is Gossypium hirsutum. It is obvious that the seeds of different variety of cotton vary as grown in diverse agroclimatic conditions with respect to oil, fats and protein contents. Cottonseed oil is routinely used for cooking and food manufacturing products. Cottonseed oil obtained after proper extraction/processing steps from crude state to refined oil in a variety of ways. Cotton crop is considered for their dual-use purpose, for fiber quality and oil production to promote health benefits in the world. Keeping in view the above facts, this review clearly demonstrated an overview about physicochemical and functional properties of cottonseed oil to promote health benefits associated with the use of this oil. The overall characteristics and all concerned health benefits of CSO will further improve their usefulness is a compact way. We have summarized a brief multi-dimensional features of CSO in all aspects up to the best of our knowledge for the end researchers who can further research in the respective aspect.

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