A combined method for carbon sequestration and water treatment is described in the present invention. Said carbon sequestration comprises capturing atmospheric carbon dioxide in an aqueous solution, and said water treatment comprises simultaneous removal of said carbon dioxide from said aqueous solution by electrochemical deposition of metal carbonates, hydroxides and/or mixed salts crystallised on crystallisation seeds or beads. The metal carbonates, hydroxides and mixed salts are insoluble or sparingly soluble inorganic compounds obtained from the captured carbon dioxide by chemical reactions with water and metal cations contained in said pre-treated water. The crystallisation seeds are seeding crystals serving as nucleation centres for crystal growth of the metal carbonates, hydroxides and/or mixed salts from the alkaline stream. The crystallisation seeds and beads are optionally chemically modified with chemical functional groups to provide selective tuneable purity to the crystalline metal carbonates, hydroxides and/or mixed salts crystallised on said seeds or beads.

The present disclosure provides an improved scale inhibiting formulation that is effective, environmentally friendly, and does not add any organic compounds or traditional polymeric compounds to treated water. The scale inhibiting composition includes molecular clusters of polyammonium bisulfate (PABS), which can interact physically, chemically, or physio-chemically with one or more ions in the water or water-containing system being treated. That interaction inhibits scale accretion and/or removes previously formed scale.

The present invention discloses a polymer and a comprehensive antiscalant formulation prepared from the same polymer and including dealkalizer, chelating agent, oxidizing biocide, non-oxidising biocide, and use of the said antiscaling formulation to inhibit the scale formation in industrial water systems. The said polymer is the reaction product of an MA-AA copolymer and one of compounds selected from an ethyleneamines, morpholine, or alkanolamines at a reaction temperature 50-80 C. for 1-3 hours. The said antiscaling formulation includes the components; the polymer in 5-100 ppm, the dealkalizer in 5-200 ppm, the chelating agent in 5-100 ppm, and the biocide in 2-20 ppm. The said antiscaling formulation further featured with corrosion inhibition and biocidal activity.

A scale inhibitor composition for reducing calcium scale under stressed conditions is disclosed. The composition comprises a combination of scale inhibiting components, including an acrylic acid polymer and a chelant. The acrylic acid polymer is provided as an aqueous polymerization reaction product of an acrylic acid and a chain transfer agent, with the acrylic acid polymer having a weight averaged molecular weight (Mw) of from about 1,300 to about 15,000 Daltons. A method of preparing the scale inhibitor composition is also disclosed, and comprises reacting the acrylic acid and the chain transfer agent to give the reaction product comprising the acrylic acid polymer, and combining the reaction product with the chelant. A process for ameliorating calcite scale in a mining operation is further disclosed.

Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed, in addition to methods for the prevention of fouling. The slurry can be a lime slurry or a magnesium oxide slurry. The rheology modifying agent can be a low molecular weight anionic polymer, a high molecular weight polymer, a mixture of a low molecular weight anionic polymer and a high molecular weight polymer, a mixture of a high molecular weight polymer and a chelating agent, and a mixture of a chelating agent, a high molecular weight polymer, and a low molecular weight anionic polymer.

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

A water conditioning composition includes water; at least one gluconate compound; at least one carbonate compound; a non-ionic preservative; and a phosphate buffer. For example, the composition can include 87-95 wt. % water; 0.5 to 1.5 wt. % gluconate compound; 3 to 8 wt. % carbonate compound; 0.5 to 1.5 wt. % non-ionic preservative; and 0.5 to 2.5 wt. % phosphate buffer.

Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed, in addition to methods for the prevention of fouling. The slurry can be a lime slurry or a magnesium oxide slurry. The rheology modifying agent can be a low molecular weight anionic polymer, a high molecular weight polymer, a mixture of a low molecular weight anionic polymer and a high molecular weight polymer, a mixture of a high molecular weight polymer and a chelating agent, and a mixture of a chelating agent, a high molecular weight polymer, and a low molecular weight anionic polymer.

The present invention provides novel compositions comprising: (a) a metaperiodate and (b) chlorhexidine or a chlorohexidine salt and uses thereof for the preparation of devices, and in particular medical devices, susceptible to colonization by biofilm forming bacteria.

The present invention discloses a descaling formulation consisting of dealkalizer, surfactant and corrosion inhibitor and use of the said descaling formulation to dissolve and clean scales formed on the surfaces of industrial water systems. The said dealkalizer is selected from a mineral acid, an organic acid or combination of them. The said surfactant is selected from a polymer surfactant, a zwitter ionic surfactant or non-ionic surfactant or combination of them. The said corrosion inhibitor is a quaternary ammonium salt or a Polyethylene glycol alkyl ether.