Remediation of Cd(ii)-contaminated soil by three kinds of ferrous phosphate nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17390-17395 ◽  
Author(s):  
Yanzhe Xu ◽  
Xiaomin Yan ◽  
Ling Fan ◽  
Zhanqiang Fang
Keyword(s):  
Contaminated Soil ◽  
Iron Phosphate ◽  
Ferrous Phosphate

Three kinds of iron phosphate nanoparticles were synthesized and they could reduce leachability and bioaccessibility of Cd effectively.

Removal of lead complexes by ferrous phosphate and iron phosphate: Unexpected favorable role of ferrous ions

2020 ◽  
Vol 392 ◽  
pp. 122509 ◽  
Author(s):  
Rui Li ◽  
Qiao Li ◽  
Xiuyun Sun ◽  
Jiansheng Li ◽  
Jinyou Shen ◽  
...  
Keyword(s):  
Iron Phosphate ◽  
Ferrous Ions ◽  
Ferrous Phosphate

scholarly journals Corrosion Inhibition Mechanism of Steel Reinforcements in Mortar Using Soluble Phosphates: A Critical Review

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6168
Author(s):  
David M. Bastidas ◽  
Ulises Martin ◽  
Jose M. Bastidas ◽  
Jacob Ress
Keyword(s):  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Iron Phosphate ◽  
Inhibition Mechanism ◽  
Soluble Phosphate ◽  
Phosphate Ions ◽  
Ph Range ◽  
Ferrous Phosphate ◽  
Spontaneous Reaction ◽  
Phosphate Compounds

The corrosion inhibition mechanism of soluble phosphates on steel reinforcement embedded in mortar fabricated with ordinary Portland cement (OPC) are reviewed. This review focuses soluble phosphate compounds, sodium monofluorophosphate (Na2PO3F) (MFP), disodium hydrogen phosphate (Na2HPO4) (DHP) and trisodium phosphate (Na3PO4) (TSP), embedded in mortar. Phosphate corrosion inhibitors have been deployed in two different ways, as migrating corrosion inhibitors (MCI), or as admixed corrosion inhibitors (ACI). The chemical stability of phosphate corrosion inhibitors depends on the pH of the solution, H2PO4− ions being stable in the pH range of 3–6, the HPO42− in the pH range of 8–12, while the PO43− ions are stable above pH 12. The formation of iron phosphate compounds is a thermodynamically favored spontaneous reaction. Phosphate ions promote ferrous phosphate precipitation due to the higher solubility of ferric phosphate, thus producing a protective barrier layer that hinders corrosion. Therefore, the MFP as well as the DHP and TSP compounds are considered anodic corrosion inhibitors. Both types of application (MCI and ACI) of phosphate corrosion inhibitors found MFP to present the higher inhibition efficiency in the following order MFP > DHP > TSP.

Research of Lithium Ferrous Phosphate by Microwave Technique

2013 ◽  
Vol 743-744 ◽  
pp. 455-462
Author(s):  
Jun Yan Li ◽  
Hai Yan Zhao ◽  
Guang Fei Qu ◽  
Jun Jie Gu ◽  
Ping Ning
Keyword(s):  
Lithium Iron Phosphate ◽  
Synthesis Method ◽  
Value Added ◽  
Lithium Carbonate ◽  
Iron Phosphate ◽  
Cycle Performance ◽  
Process Conditions ◽  
Ferrous Oxalate ◽  
Electric Capacity ◽  
Ferrous Phosphate

In order to developing high-value-added products and making full use of phosphate resources, Lithium Iron Phosphate were synthesized in the controlled atmosphere, using electronic grade phosphoric acid from Yunnan province, ferrous oxalate and Lithium carbonate by microwave processing. The variety of particles and distribution in different conditions of the mixing and grinding, the influence of appearance and property of the Lithium Iron Phosphate in different conditions of microwave power, microwave time and reaction temperature were discussed. Based on the experiment the optimized process conditions have been obtained. Some of the samples were characterized by XRD, SEM, electric capacity, chemical analysis, cycle performance and phase analysis. The experimental results show that the microwave synthesis method of Lithium Ferrous Phosphate is feasible.

An Experimental Study on Geotechnical and Electrical Properties of an Oil-Contaminated Soil at Thi-Qar Governorate/Iraq

2019 ◽  
Vol 10 (3) ◽  
pp. 148
Author(s):  
Nesreen Kurdy Al-Obaidy ◽  
Assad Al-Shueli ◽  
Hawraa Sattar ◽  
Zainab Majeed ◽  
Noor Al Huda Hamid
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Contaminated Soil

INFLUENCE OF MINERAL SORBENTS ON GROWTH AND DEVELOPMENT OF HORDEUM VULGARE ON SOIL POLLUTED BY BENZ(A)PYRENE

2020 ◽  
Author(s):  
A.I. Barbashev ◽  
◽  
S.N. Sushkova ◽  
T.M. Minkina ◽  
T.S. Dudnikova ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Toxic Effect ◽  
Contaminated Soil ◽  
Growth And Development

The effect of diatomite and tripoli added into the soil artificially contaminated with benzo[a]pyrene was studied. A decrease in the toxic effect of BaP on barley plants was established when diatomite and tripoli were added as ameliorants to contaminated soil. The improvement of plants grown сharacteristics on soils contaminated with BaP with the addition of diatomite and tripoli was shown up to 2-4 times compare to contaminated samples.

THE EFFECT OF BACTERIAL STRAINS ON THE ENZYMATIC ACTIVITY OF SOILS IN IMPACT ZONE OF ATAMAN LAKE

2020 ◽  
Author(s):  
V.V. Zinchenko ◽  
◽  
E.S Fedorenko ◽  
A.V Gorovtsov ◽  
T.M Minkina ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Contaminated Soil ◽  
Model Experiment ◽  
Impact Zone ◽  
Bacterial Strains ◽  
The Impact

As a result of the model experiment, an increase in the enzymatic activity of meadow chernozem of the impact zone of Ataman Lake with the introduction of a strains mixture of metal-resistant microorganisms into the soil was established. The experiment has shown that the application of bacterial strains increases the dehydrogenase activity of contaminated soil by 51.8% compared to the variant without remediation

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