scholarly journals PREPARATION OF FEED-GRADE MONOCALCIUM PHOSPHATE BY CRYSTALLIZATION IN AQUEOUS MEDIUM: CALCULATION AND EXPERIMENTS

2021 ◽  
Vol 59 (5) ◽  
Author(s):  
Ta Hong Duc
Keyword(s):  
Phosphoric Acid ◽  
Acid Solution ◽  
Aqueous Medium ◽  
Crystallization Temperature ◽  
Mother Liquor ◽  
Animal Feed ◽  
Phosphoric Acid Solution ◽  
Feed Additives ◽  
Monocalcium Phosphate ◽  
Crystallization Method

In this paper, we present the results of calculation, and experiments for the preparation of feed-grade monocalcium phosphate by crystallization method in phosphoric acid solution. Some parameters influence to the production such as the reaction and crystallization temperature, the ratio of recycle mother liquor to reactant mixture have been investigated. The results show that the crystallization method in the preparation of monocalcium phosphate will give product with higher quality, less impurities that will be suitable for animal feed additives. 

Electropolishing of horizontal copper cylinders in unstirred phosphoric acid solution

1978 ◽  
Vol 7 (4) ◽  
pp. 313-318 ◽  
Author(s):  
I.A.S. Mansour ◽  
G.H. Sedahmed ◽  
M.Z. El-Abd ◽  
A.M. Ahmed
Keyword(s):  
Phosphoric Acid ◽  
Acid Solution ◽  
Phosphoric Acid Solution

Evaluation of environmentally friendly inhibitor for corrosion of mild steel in phosphoric acid solution: unconventional approach

2018 ◽  
Vol 65 (5) ◽  
pp. 506-514 ◽  
Author(s):  
Khalid Rashid ◽  
Anees Khadom
Keyword(s):  
Corrosion Rate ◽  
Phosphoric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Design Method ◽  
Correlation Coefficients ◽  
Environmentally Friendly ◽  
Phosphoric Acid Solution ◽  
Content Type ◽  
Phenolic Components

PurposeThe purpose of this study is to investigate the corrosion inhibition of mild steel alloy in 2 M H3PO4solution by the pomegranate peel extract as a friendly inhibitor was studied at various temperatures, inhibitor concentrations and immersion times.Design/methodology/approachA weight loss method was used to evaluate the corrosion rate. The experimental Taguchi design method was used for the distribution of experiments. The experimental design gave results which were impossible to show graphically. However, this problem was solved effectively with the aid of regression analysis.FindingsCorrosion rate increased with temperature according to Arrhenius equation. It was found that the efficiency of inhibition was increased with an increase in the concentration of inhibitor and immersion time. However, this diminishes with increased temperature. According to Langmuir isotherm, the inhibitor was adsorbed physically on steel surface. The negative sign of estimated heat of adsorption suggests a stable spontaneous inhibition process. Combination of mathematical and statistical analysis was proposed to demonstrate the results of corrosion rate with high correlation coefficients. In addition, Fourier transform infrared spectrometer examinations confirmed that the organic inhibitor consists of phenolic components as main materials.Originality/valueUsing unconventional approach for evaluation of environmentally friendly inhibitor for corrosion of mild steel in phosphoric acid solution.

scholarly journals Electrochemical Oscillations during Electro-oxidation of Copper Anode in Phosphoric Acid Solution

2019 ◽  
Vol 87 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Lifeng DING ◽  
Peng WU ◽  
Jun CHENG ◽  
Yulan NIU ◽  
Zhengwei SONG ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Acid Solution ◽  
Phosphoric Acid Solution ◽  
Copper Anode ◽  
Electro Oxidation
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