Ameliorating Soil Sodicity Using Calcium Salt Incorporated Hydrogels

2010 ◽  
Vol 93-94 ◽  
pp. 350-353
Author(s):  
Loo Teck Ng ◽  
Jane Aiken
Keyword(s):  
Calcium Ions ◽  
Calcium Salt ◽  
Soil Condition ◽  
Water Soluble ◽  
Hydroxyethyl Methacrylate ◽  
Clay Loam ◽  
Recycled Water ◽  
Sodic Soil ◽  
Soil Sodicity ◽  
Soluble Calcium

The potential of using hydrogels encapsulated with a water-soluble calcium salt, Ca(NO3)2 for the remediation and management of sodic soil, a degenerate soil condition associated with irrigation of recycled water was investigated. Environmentally friendly hydrogel, poly(2-hydroxyethyl methacrylate) (PHEMA) was synthesised from the monomer, 2-hydroxyethyl methacrylate (HEMA). HEMA was also used to copolymerise with another monomer, N-vinyl pyrrolidinone (NVP) to form a more hydrophlic hydrogel. Starch and glucose were incorporated in certain hydrogels with the intention of evaluating their biodegradability in soils since starch and glucose would serve as nutrients for microbials in soils. Delivery of calcium ions embedded in hydrogels were investigated on sodic and non-sodic clay loam under saturated condition. It was found that the optimum hydrogel for this application was the copolymer that contained HEMA and NVP in equal mole ratio.

scholarly journals Effects of Calcium Gluconate, a Water Soluble Calcium Salt on the Collagen-Induced DBA/1J Mice Rheumatoid Arthritis

2013 ◽  
Vol 21 (4) ◽  
pp. 290-298 ◽  
Author(s):  
Ki Cheul Sohn ◽  
Su Jin Kang ◽  
Joo Wan Kim ◽  
Ki Young Kim ◽  
Sae Kwang Ku ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Calcium Gluconate ◽  
Calcium Salt ◽  
Water Soluble ◽  
Soluble Calcium

scholarly journals Ethylenediaminetetraacetic acid in endodontics

2013 ◽  
Vol 07 (S 01) ◽  
pp. S135-S142 ◽  
Author(s):  
Zahed Mohammadi ◽  
Sousan Shalavi ◽  
Hamid Jafarzadeh
Keyword(s):  
Carboxylic Acid ◽  
Calcium Ions ◽  
Ethylenediaminetetraacetic Acid ◽  
Chelating Agent ◽  
Water Soluble ◽  
Disodium Edta ◽  
Review Of The Literature ◽  
Soluble Solid ◽  
Soluble Calcium ◽  
Amine Groups

ABSTRACTEthylenediaminetetraacetic acid (EDTA) is a chelating agent can bind to metals via four carboxylate and two amine groups. It is a polyamino carboxylic acid and a colorless, water-soluble solid, which is widely used to dissolve lime scale. It is produced as several salts, notably disodium EDTA and calcium disodium EDTA. EDTA reacts with the calcium ions in dentine and forms soluble calcium chelates. A review of the literature and a discussion of the different indications and considerations for its usage are presented.

A review on known and unknown facts of EDTA

2020 ◽  
Vol 8 (02) ◽  
Author(s):  
Ocean Varma
Keyword(s):  
Heavy Metal ◽  
Carboxylic Acid ◽  
Calcium Ions ◽  
Ethylenediaminetetraacetic Acid ◽  
Chelating Agent ◽  
Water Soluble ◽  
Disodium Edta ◽  
Soluble Solid ◽  
Soluble Calcium ◽  
Amine Groups

Edetate disodium (EDTA) is a chelating (KEE-late-ing) agent. A chelating agent is capable of removing a heavy metal, such as lead or mercury, from the blood. Ethylenediaminetetraacetic acid (EDTA) is a chelating agent can bind to metals via four carboxylate and two amine groups. It is a polyamino carboxylic acid and a colorless, water-soluble solid, which is widely used to dissolve lime scale. It is produced as several salts, notably disodium EDTA and calcium disodium EDTA. EDTA reacts with the calcium ions in dentine and forms soluble calcium chelates. A review on EDTA’s known and unknown facts are presented in this article.

Water-soluble polymeric particle embedded cryogels: Synthesis, characterisation and adsorption of haemoglobin

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Kadir Erol ◽  
Melda Bolat Bülter ◽  
Dursun Ali Köse ◽  
Hatice Kaplan Can
Keyword(s):  
Copper Ions ◽  
Langmuir Model ◽  
Water Soluble ◽  
Hydroxyethyl Methacrylate ◽  
Adsorption Ability ◽  
Adsorption Interaction ◽  
Polymeric Particle ◽  
Adsorption Desorption ◽  
Desorption Cycle ◽  
Soluble Poly

Abstract Making cryogels, which are among today’s accepted adsorbents, more functional with different methods, has been one of the subjects spent overtime. In this study, water-soluble poly(maleic anhydride-alt-acrylic acid) polymer embedded in poly(2-hydroxyethyl methacrylate) cryogels. Copper ions were then immobilised to this structure, and this polymer was used for adsorption of haemoglobin from aqueous systems. Adsorption interaction was carried out on an electrostatic basis, and approximately 448.62 mg haemoglobin/g polymer adsorption capacity value was obtained. It was found that the same material has managed to maintain its adsorption ability by 90.3% even after the use of it five times in the adsorption/desorption cycle. The adsorption interaction was determined to be appropriate for the Langmuir model by isotherm studies. The change in Gibbs free energy value was calculated as −2.168 kJ/mol.

scholarly journals Magneto-sensitive hybrid nanocomposites of water-soluble sodium alginate cross-linked with calcium ions and maghemite

2018 ◽  
Vol 12 (5) ◽  
pp. 452-461 ◽  
Author(s):  
V. V. Spiridonov ◽  
I. G. Panova ◽  
L. A. Makarova ◽  
S. B. Zezin ◽  
A. A. Novakova ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Calcium Ions ◽  
Water Soluble ◽  
Hybrid Nanocomposites

HALOMORPHISM OF SOME CLAY SOILS IN MANITOBA

1958 ◽  
Vol 38 (2) ◽  
pp. 105-115
Author(s):  
W. A. Ehrlich ◽  
R. E. Smith
Keyword(s):  
Exchangeable Cations ◽  
Water Soluble ◽  
Clay Soils ◽  
Exchangeable Sodium ◽  
Soluble Salts ◽  
Exchangeable Calcium ◽  
Causative Agents ◽  
Exchangeable Magnesium ◽  
Soluble Calcium

The analysis of the principal horizons of 11 halomorphic profiles was undertaken in an attempt to ascertain, chiefly, the kind and quantity of soluble salts and exchangeable cations assumed to be the main causative agents in the formation of solonetzic soils in Manitoba. The results showed that water-soluble sodium was equal to or greater in quantity than water-soluble calcium or water-soluble magnesium; that exchangeable calcium followed closely by exchangeable magnesium dominated the exchange complexes; and that exchangeable sodium in excess of 15 per cent of the exchangeable cations was found only in some horizons of the Solonchak, Solonetz and Solodized-Solonetz soils in the Chesterfield Association.

A fluoride selective water-soluble anion receptor based on a 1,2-phenylenediacetic acid and calcium ion dimer

2019 ◽  
Vol 43 (34) ◽  
pp. 13690-13695
Author(s):  
Dae Hyup Sohn ◽  
Nayeon Kim ◽  
Soonmin Jang ◽  
Jongmin Kang
Keyword(s):  
Calcium Ions ◽  
Calcium Ion ◽  
Water Soluble ◽  
Anion Receptor ◽  
Fluoride Ions

The dimeric receptor 1 from 1,2-phenylenediacetic acid and calcium ions recognized fluoride ions almost exclusively in 100% water.

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