hedp of water treatment chemicals organic phosphonic acid
hedp of water treatment chemicals organic phosphonic acid
hedp of water treatment chemicals organic phosphonic acid
hedp of water treatment chemicals organic phosphonic acid
hedp of water treatment chemicals organic phosphonic acid
complexation-based selectivity of organic phosphonates adsorption from high-salinity water by neodymium-doped nanocomposite

Complexation-based selectivity of organic phosphonates adsorption from high-salinity water by neodymium-doped nanocomposite

All the chemicals are of analytical grade without further purification unless otherwise specified. 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC, 50% aqueous solution), 1-hydroxyethane 1,1-diphosphonic acid (HEDP, 60% aqueous solution), nitrilotris

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behavior of pbtc, hedp, and aminophosphonates in the process of wastewater treatment

Behavior of PBTC, HEDP, and Aminophosphonates in the Process of Wastewater Treatment

131 g/L and 384 g/L. The nitrogen-free phosphonates 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) and 1-hydroxyethylidene(1,1-diphosphonic acid) (HEDP) accounted for an average proportion of 83¨C85%. Diethylenetriaminepenta(methylene phosphonic

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molecular structures of 1-hydroxyethane-1,1-diphosphonic acid for removing calcium sulfate scale under different ph conditions

Molecular structures of 1-hydroxyethane-1,1-diphosphonic acid for removing calcium sulfate scale under different pH conditions

As it is well known, HEDP (often represented as H 4 L) can ionize four protons H + in water. HEDP is a quaternary organic acid with multiple deprotonation states under different pH conditions. The pKa values, as reported in ref. 29, are 1.43, 2.70, 7.02, and 11.2, respectively., are 1.43, 2.70, 7.02, and 11.2, respectively.

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the performance of organic phosphonate hedp in water treatment

The Performance of Organic Phosphonate HEDP in Water Treatment

Organic phosphonic acids and their salts have been successfully used to control corrosion and scaling of high hardness, high temperature, and high pH cooling water systems. Therefore, organic phosphonic acids are often used as scale inhibitors.

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trace-level determination of phosphonates in liquid and solid phase of wastewater and environmental samples by ic-esi-ms/ms

Trace-level determination of phosphonates in liquid and solid phase of wastewater and environmental samples by IC-ESI-MS/MS

This study describes the development of a comprehensive tool set for the determination of aminotris (methylenephosphonic acid) (ATMP), diethylenetriaminepenta (methylenephosphonic acid) (DTPMP), ethylenediaminetetra (methylenephosphonic acid) (EDTMP), 1-hydroxyethanediphosphonic acid (HEDP), and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC)

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organophosphonates: a review on environmental relevance, biodegradability and removal in wastewater treatment plants

Organophosphonates: A review on environmental relevance, biodegradability and removal in wastewater treatment plants

The worldwide increasing consumption of the phosphonates 2-phosphonobutane-1,2,4-tricarboxylic acid [PBTC], 1-hydroxyethane 1,1-diphosphonic acid [HEDP], nitrilotris (methylene phosphonic acid) [NTMP], ethylenediamine tetra (methylene phosphonic acid) [EDTMP] and diethylenetriamine penta (methylene phosphonic acid) [DTPMP] over the past decades

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uv/chlorine oxidation of the phosphonate antiscalant 1-hydroxyethane-1, 1-diphosphonic acid (hedp) used for reverse osmosis processes: organic

UV/chlorine oxidation of the phosphonate antiscalant 1-Hydroxyethane-1, 1-diphosphonic acid (HEDP) used for reverse osmosis processes: Organic

Section snippets Chemicals and materials HEDP (CAS Number 2809-21-4) and sodium hypochlorite (NaOCl) with 10% free chlorine was obtained from J&K Scientific, Ltd. (China). All inorganic salts, acids, and bases used in this study were more than analytical

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wide applications of hedp in water treatment chemicals

Wide Applications of HEDP in Water Treatment Chemicals

HEDP Can Be Used as a Scale Inhibitor or as a Metal Cleaner. There are many kinds of scaling on the surface of the metal, such as oil-soluble scaling, water-soluble scaling, metal rust, and scaling. HEDP is mainly used to clean inorganic scale, alkaline oxide, and hydroxide of the metal surface. The commonly used organic acids metal cleaning

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organophosphonates: a review on environmental relevance, biodegradability and removal in wastewater treatment plants - pubmed

Organophosphonates: A review on environmental relevance, biodegradability and removal in wastewater treatment plants - PubMed

1 Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandt?le 2, 70569 Stuttgart, Germany. Electronic address: [email protected]. 2 Chair of Resource Efficient Wastewater Technology, University of Kaiserslautern, Paul-Ehrlich-Str. 14, 67663 Kaiserslautern, Germany.

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experimental study of one-step economical retarded sandstone acid | journal of petroleum exploration and production technology

Experimental study of one-step economical retarded sandstone acid | Journal of Petroleum Exploration and Production Technology

The objective of this study is to experimentally evaluate a new acid combination of HEDP: CH3COOH as a retarded acid to minimize some limitations of high-temperature sandstone acidizing, such as fast acid-rock reaction and secondary precipitation pipeline corrosion. In this work, the acid¨Cbase titration, core-powder solubility test, scale deposition test, corrosion rate measurement and

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