Use of Antiscalant Polymers in Industrial Cooling Circuits: Laboratory Local Inhibition Law Applied to the Modeling of a Pilot Plant Performance

Chhim, Norinda; Neveux, Thibaut; Bouteleux, Céline; Teychené, Sébastien; Biscans, Béatrice

doi:10.1021/acs.iecr.2c03845

Cited by 1 publication

(2 citation statements)

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“…[3]. Among these, the most effective and widely used approach is the application of chemicals that inhibit scale formation at sub-stoichiometric levels [1,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Polyacrylate Antiscalant Activity during Gypsum Deposit Formation with the Pretreatment of Aqueous Solutions with Spruce Wood Shavings

Trukhina,

Popov,

Oshchepkov

et al. 2023

Materials

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Considerable efforts are made worldwide to reduce inorganic scale in reverse osmosis plants, boilers and heat exchangers, evaporators, industrial water systems, geothermal power plants and oilfield applications. These include the development of new environmentally friendly antiscalants and the improvement of conventional ones. The present report is dedicated to the unconventional application of spruce wood shavings in combination with polyacrylate (PAA-F1) in a model case of gypsum scale formation. The electrical conductivity of freshly prepared gypsum solutions with a saturation SI = 2.3 and a concentration of 0.05 mol·dm−3 was analyzed over time at 25°C. It is demonstrated that the small amounts of wood shavings (0.1% by mass) alone, after being in contact with CaCl2 and Na2SO4 stock solutions for 15 min, increase the induction time tind by 25 min relative to the blank experiment (tindblank). In the presence of PAA-F1 (0.1 mg·dm−3), the difference Δtind = tind − tindblank constitutes 110 min, whereas the sequential treatment of the stock solutions with the shavings followed by PAA-F1 injection gives Δtind = 205 min. The observed synergism is associated with the selective removal of colloidal Fe(OH)3solid and Al(OH)3solid nanoimpurities from the stock solutions via their sorption to the well-developed surface of wood. Wood shavings therefore represent a very promising and environmentally friendly material that can significantly improve the effectiveness of conventional antiscalants.

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“…[3]. Among these, the most effective and widely used approach is the application of chemicals that inhibit scale formation at sub-stoichiometric levels [1,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, there is a wide variety of views on the activity of antiscalants [1,[4][5][6][7][25][26][27][28][29][30][31][32]. The scale inhibitors may act in a bulk aqueous medium through several possible routes.…”

Section: Introductionmentioning

confidence: 99%