Citric acid as a green additive to retard calcium carbonate scales on process equipment

2020 ◽  
Vol 98 (9) ◽  
pp. 1973-1979 ◽  
Author(s):  
Marina Prisciandaro ◽  
Giuseppe Mazziotti di Celso ◽  
Amedeo Lancia ◽  
Dino Musmarra ◽  
Despina Karatza
2017 ◽  
Vol 69 ◽  
pp. 173-177 ◽  
Author(s):  
G. Mazziotti di Celso ◽  
M. Prisciandaro ◽  
D. Karatza ◽  
A. Lancia ◽  
D. Musmarra

2010 ◽  
Vol 345 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Latha-Selvi Canabady-Rochelle ◽  
Christian Sanchez ◽  
Michel Mellema ◽  
Sylvie Banon

Friction ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 182-197 ◽  
Author(s):  
Zhiqiang Tu ◽  
Enzhu Hu ◽  
Bangbang Wang ◽  
Karl D. David ◽  
Philipp Seeger ◽  
...  

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3800
Author(s):  
Hala Zahlan ◽  
Waseem Sharaf Saeed ◽  
Radwan Alrasheed ◽  
Naser M. Alandes ◽  
Taieb Aouak

This investigation determined a feasible route to prepare hyperbranched polyesters involving citric acid (CA) and glycerol (GLC) monomers (CA-co-GLC) using a thermal polycondensation method. The synthesized copolymer was characterized using Fourier transform infrared spectroscopy (FT-IR), carbon-13 nuclear magnetic resonance spectroscopy, and differential scanning calorimetry. The ability of CA-co-GLC to inhibit deposition of inorganic scales such as calcium carbonate was investigated under varying temperature and pH medium. The evaluation of inhibition efficiency (IE) was conducted using the static scale inhibition method. The mechanism of the inhibitor’s action was investigated via growth solution analysis, measurement conductivity, and analysis of CaCO3 using FT-IR and scanning electron microscopy. The results obtained showed that the CA-co-GLC had good IE at an elevated temperature reaching 75% at 100 °C, pH 7.5, and 10 ppm copolymer dose. Using the same dose, the IE reached 66% at 50 °C and pH 10. The CA-co-GLC did not chelate Ca2+ in water, but led to a change in polymorphism, making it brittle and able to slip easily from the surface. Its action principally prevented the adhesion of calcium carbonate onto the surface.


2017 ◽  
Vol 95 (9) ◽  
pp. 1671-1675 ◽  
Author(s):  
Giuseppe Mazziotti di Celso ◽  
Marina Prisciandaro ◽  
Despina Karatza ◽  
Amadeo Lancia ◽  
Dino Musmarra

Author(s):  
Vitalii Zoshchuk ◽  
Alla Orlova ◽  
Sergey Martynov

The article describes the process of operation of water heating equipment, associated with water, which requires compliance with certain water regime. It is focused on the consequences and their elimination when using water heating equipment, and safe operation. The results of physical and chemical analyses of artesian water have been ordered.


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