...Gypsum precipitation experiments were carried out by adding known volume of stock solution of sodium sulfate to known volume of water in a glass bottle maintained at 66°C. (1) Percent inhibition ( % I) = ( C 1 – C 2 ) / ( C 3 – C 2 ) x 100 Where: C₁...

...). Test inhibitors seemed to retard transformation of the least stable vaterite. scale calcium carbonate inhibition mono-ethylene glycol acrylic polymers INTRODUCTION As may be seen in Figure 3 however, the morphology of the crystallites suggested the presence vaterite and aragonite at sufficiently...

... effective inhibitors of the crystal growth of the supercritical nuclei forming in the solutions. The effect of the polymers as brucite inhibitors was compared with 1-hydroxyethylidine 1,1-diphosphonic acid (HEDP). The efficiency of inhibition followed the order: HEDP > PAA2k > PAA6k. brucite...

.... Carboxymethyl cellulose (CMC) was applied as a sulfide particle dispersant. Diethylenetriamine penta (methylene phosphonic acid) (DTPMP) was amended in the combination with CMC to examine the synergistic effect on sulfide particle dispersion and inhibition. To examine the effect of dispersants on mixed scales...

... between the coupled specimens as well as regular linear polarization resistance measurements. A parametric study was conducted including temperature, CO₂ partial pressure, type of corrosion control chemical, solution chemistry, sand layer thickness and deposition scenario. Inhibition was more...

... onto the surface of silica particles. This paper reports results that shed light onto these aforementioned processes. Also, the inhibition efficiency is reported of a variety of polymeric additives and some combinations in retarding silica polymerization in supersaturated aqueous solutions. Finally...

..., by the addition of organic chemical additives to the water. Herein, we report the inhibitory effects of phosphonate-based chemical additives for ZnS and PbS scales. These additives can inhibit formation of sulfide scale, and, significantly, prevent its deposition on metal surfaces. The efficiency...

... in flow back brine after acid treatments. ^{15 , 34} Therefore, it is essential to identify the source and type of iron in order to properly design the appropriate treatment method, e.g. corrosion inhibition and/or scale inhibition/dispersion. Table 2 Fe, Zn and Pb Concentrations...

... systems to study FeS precipitation kinetics and inhibitions in a reliable way. ^{8 , 14} Abstract The scale problem related to the formation of iron sulfide is commonly found during oil and gas productions in sour environments using low corrosion resistant carbon steel equipment and pipes...

... of silicic acid condensation, and influence silica particle growth. Possible mechanisms are discussed, focusing on the nature of chemical moieties responsible for the stabilization. silica deposition scale water treatment inhibition polymer additives control INTRODUCTION A large portion of biosilica...

... of the experiments were conducted using cyclic potentiodynamic polarization (CPP) on neat chemicals and verified using long-term neat chemical exposures (90 day) to various materials to verify the CPP results. Localized corrosion inhibition synergistic additives cyclic polarization INTRODUCTION Neat chemical...

... of polymers in CaOx supersaturated solution favor the formation of COD (calcium oxalate dihydrate) phase. polymer architecture inhibition crystal modification cooling water systems INTRODUCTION The mineralization of calcium oxalate (CaOx) has posed a significant problem to both biological and industrial...

... (Orion Star A212 conductivity meter) of the solution as a function of time. The conductivity values collected as a function of time was used to calculate inhibition of strontium sulfate precipitation. RESULTS AND DISCUSSION Polymer Efficacy Progress of strontium sulfate precipitation reaction...

... silicate usually precipitates in fluids of higher temperatures. ⁴ Abstract Metal silicate deposits have been noted in several water treatment facilities, but they are more common in geothermal systems. Herein, chemical approaches for the inhibition of metal silicate formation will be presented...

...Abstract This study is focused on the evaluation of polyepoxysuccinic acid (PESA), 2-phosphonobutane 1,2,4-tricarboxyllic acid (PBTC), and PESA/PBTC blends for calcium sulfate dihydrate (gypsum) and calcium carbonate scale inhibition for aqueous systems. For comparison, synthetic, bio-, and hybrid...

.... It has been observed that performance of poly(acrylic acid), PAA, is negatively impacted by increasing the struvite solution supersaturation. Moreover, inhibition of struvite by polymers increases with increasing MW with a range of ~2,000 to 60,000 investigated in this paper. Overall performance reveals...

...Experimental Procedure Table 3 Experimental matrix to study the effect of H₂S on inhibition efficacy of decanethiol as a VCI Gas temperature (°C) 40 Steel temperature (°C) 38 Total pressure (bar) 1 Solution DI water pH bottom solution 4 Inhibitor...

... microscopy was used for surface analysis. The occurrence of localized corrosion was evaluated by means of profilometry analysis. All the inhibitors tested showed excellent inhibition properties for general corrosion. However, localized corrosion as high as 100 mm/y was observed in some cases. inhibition...

..., at operating conditions similar to those encountered in gas-condensate production facilities. Additionally, TLC experiments were performed in the same flow loop under simulated water condensation conditions to measure the actual corrosion at different rates of inhibiting droplet deposition. The results confirm...

... measurements. Quantitative force measurements were also performed to evaluate the force required for penetration of the inhibitor film adsorbed on carbon steel. CO₂ corrosion imidazoline AFM inhibition carbon steel CO₂ corrosion INTRODUCTION & BACKGROUND The use of atomic force...