The Effect of Temperature, Humidity, and Silicon Content on the Oxidation of Fine Iron Particles

hadad, A. El; Pizzo, P. P.

doi:10.1520/stp15055s

Cited by 2 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Addition of silicate-based inhibitors has also been found to distribution systems reduce iron corrosion rate (Rompre et al, 1999;Raad et al, 1998;Williams, 1990). Finally, silicates are reported to decrease the oxidation of ferrous iron because ferrous iron diffusion through the silicate film is slower than through iron oxide scale (Hadad & Pizzo, 1992). Silicates appear to form a self-limiting film on the corroded iron surface that will break down if silica dosing is stopped.…”

Section: Silicates Disperse Iron Particlesmentioning

confidence: 99%

IRON PIPE corrosion IN DISTRIBUTION SYSTEMS

McNeill¹,

Edwards²

2001

Journal AWWA

264

112

View full text Add to dashboard Cite

This literature review summarizes the results of 100 years of corrosion studies, citing information from almost 300 peer‐reviewed articles to provide the water industry with an updated understanding of factors that influence the complex process of iron pipe corrosion. These factors include water quality and composition, disinfectant residuals, pipe age, scale formation, temperature, flow conditions, biological activity, and corrosion inhibitors. The authors review the reported role of these factors and highlight discrepancies in the literature. The article also discusses corrosion indexes that are intended to help control corrosion. In particular, it reiterates conclusions of prior studies regarding the Langelier index. Although this index continues to be widely used, it does not provide an effective means of controlling iron corrosion. Finally, a review of potential implications of existing and upcoming regulations, including the Lead and Copper Rule, the Disinfectants/Disinfection Byproducts Rule, and the Enhanced Surface Water Treatment Rule, for iron corrosion is also presented.

show abstract

Section: Silicates Disperse Iron Particlesmentioning

confidence: 99%

IRON PIPE corrosion IN DISTRIBUTION SYSTEMS

McNeill¹,

Edwards²

2001

Journal AWWA

264

112

View full text Add to dashboard Cite

show abstract

“…Addition of silicate-based inhibitors has also been found to reduce iron corrosion rate [27]. Finally, silicates are reported to decrease the oxidation of Fe +2 because ferrous iron diffusion through the silicate film is slower than through iron oxide scale [28].…”

Section: Introductionmentioning

confidence: 99%

A Low Cost Conversion Method of Agro-Residue to Coagulant Aid

Abo-El-Enein

Eissa²,

Diafullah

et al. 2008

The International Conference on Chemical and Environmental Engi

View full text Add to dashboard Cite

Rice is one of the major crops grown throughout the world, it covers 1% of the earth's surface and is a primary source of food for billions of people Globally, approximately 600 million tons of rice paddy is produced each year. On average 20% of the rice paddy is husk, giving an annual total production of 120 million tons. In Egypt, the annual rice production is about 5,700,000 tons, equivalent to 200,000 tons of rice husk ash .After the separation of the rice from the paddy, one -third of the mass remains as a waste material ..Many workers have tried to use this agricultural waste to produce useful materials such as silica, zeolite, silica gel silicon carbide, activated carbon and sodium silicate notation coagulant aid. Rice husk ash is one of the most silica rich raw materials containing about 90-98% silica (this quantity depends on the soil type, plant variety and climatic conditions, geological factor, type of ground, near of harvest, sample preparation and analysis method..etc.The chemical process discussed below not only provides a solution for waste disposal but also recovers a valuable silica product, together with certain useful associate recoveries The activated silica or sodium silicate is one of the four basic types of coagulants aids beside pH adjusters, clay and polymers which increase a stability of coagulant and can unite with the positively charged aluminum or with iron flocs, resulting in a larger, denser lamellar floc that settles faster and enhances enmeshment. The objectives of this study were to :produce rice husk ash (RHA) from rice husk, produce sodium silicate, and characterizations of new materials obtained by FTIR, XRD, and SEM. Under the study condition it was found that selected sample (optimum condition),of RHA which is designated as RHA 5 obtained by calcination of untreated RH at 650 º C in semi closed system. FTIR shows signals at 1098 and 800 cm -1 for Si-O and O-Si-O respectively; XRD shows a sharp signal (amorphous silica ) at 2θ =22º and SEM examination indicate that rectangular particles should be distinguished. whereas RHA 5 used in manufacturing of sodium silicate which is designated as Ssi 5 and identified by XRD with its characteristic peak at 2θ about 28º, FTIR shows signals at (1443,994) for Si-O-Si, NFTIR shows signal at 7326 for overtone OH stretching Si-OH.

show abstract

The Effect of Temperature, Humidity, and Silicon Content on the Oxidation of Fine Iron Particles

Abstract: Hadad, Allan S., "The effect of temperature, humidity and silicon content on the oxidation of fine iron particles" (1990). Master's Theses. 3260.

Cited by 2 publications

References 9 publications

IRON PIPE corrosion IN DISTRIBUTION SYSTEMS

IRON PIPE corrosion IN DISTRIBUTION SYSTEMS

A Low Cost Conversion Method of Agro-Residue to Coagulant Aid

Contact Info

Product

Resources

About