Corrosion of carbon steel pipes and tanks by concentrated sulfuric acid: A review

Panossian, Zehbour; Almeida, Neusvaldo Lira de; Sousa, Raquel; Pimenta, G.; Marques, Leandro Bordalo Schmidt

doi:10.1016/j.corsci.2012.01.025

Cited by 189 publications

(79 citation statements)

References 13 publications

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“…Thus it is important to ask why so much effort has been invested into the development of more elaborate catalysts, often requiring sulphuric acid as a reagent anyway. Sulphuric acid is known to be corrosive [51], and also able to dehydrate alcohols [52]. It is also not recyclable, which becomes a concern in high volume processes.…”

Section: Catalystmentioning

confidence: 99%

Using metrics and sustainability considerations to evaluate the use of bio-based and non-renewable Brønsted acidic ionic liquids to catalyse Fischer esterification reactions

Clark

Farmer

Macquarrie

et al. 2013

sustain chem process

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Background: Ionic liquids have found uses in many applications, one of which is the joint solvation and catalysis of chemical transformations. Suitable Brønsted acidic ionic liquids can be formed by combining lactams with sulphonic acids. This work weighs up the relative benefits and disadvantages of applying these Brønsted acidic ionic liquid catalysts in esterifications through a series of comparisons using green chemistry metrics. Results: A new bio-based ionic liquid was synthesised from N-methyl pyrrolidinone and p-cymenesulphonic acid, and tested as a catalyst in three Fischer esterifications under different conditions. An evaluation of the performance of this Brønsted acidic ionic liquid was made through the comparison to other ionic liquid catalysts as well as conventional homogeneous Brønsted acids.

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Section: Catalystmentioning

confidence: 99%

Using metrics and sustainability considerations to evaluate the use of bio-based and non-renewable Brønsted acidic ionic liquids to catalyse Fischer esterification reactions

Clark

Farmer

Macquarrie

et al. 2013

sustain chem process

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“…Table 1 shows that leaching residue is strongly acidic (pH = 3.29-3.79). Because it is easy for acid tailings to cause widespread land contamination and river pollution and because acid slurries can cause corrosion of the backfill pipe [25], the neutralization treatment of leaching residues should be carried out first to keep the backfill slurry weakly alkaline. The essence of the neutralization reaction is a process of hydrogen ion (H + ) and hydroxyl ion (OH − ) combination to form water (H 2 O) [26].…”

Section: Physicochemical Propertiesmentioning

confidence: 99%

Feasibility of Recycling Ultrafine Leaching Residue by Backfill: Experimental and CFD Approaches

et al. 2017

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Large amounts of leaching residue are released into tailings dams from mines, and their acid content can cause environmental pollution. The aim of this study was to research the feasibility and value of a leaching residue backfill recycling method. The combination of property detection, laboratory tests (the neutralization method, strength test and diffusivity test) and numerical simulation methods (3D computational fluid dynamics (CFD) simulations of pipeline transportation properties) were used to assess the performance of the leaching residue backfill. The results show that backfill body with the cement:sand mass ratio of 1:3, the leaching residue:classified tailings ratio of 1:6, and slurry mass concentration of 71 wt % can meet the strength and pipeline self-flowing transportation requirements of mine backfill. The leaching residue is a good backfill aggregate, and its recovery ratio can reach 19.5 wt %. In addition, the recycling of leaching residue effectively alleviates the problem of mine waste emissions and protects the ecological environment surrounding the mining area. This study serves as a guide for the recycling of fine tailings and the environmental governance of the mining area.

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“…When the corrosion of metal is accompanied by the formation of a protective layer of corrosion products, the corrosion rate is determined by one of the following stages; the diffusion of the oxidant to the metal surface through the corrosion product layer; the corrosion reaction rate; or the diffusion rate of the corrosion products from the metal surface towards the bulk solution. The slowest step determines the metal corrosion rate [16].…”

Section: Corrosion Rate As a Function Of Timementioning

confidence: 99%

Corrosion Inhibition of Heat Treated Mild Steel With Neem Leave Extract in a Chloride Medium

Tuaweri¹

2015

IJRET

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Corrosion of carbon steel pipes and tanks by concentrated sulfuric acid: A review

Cited by 189 publications

References 13 publications

Using metrics and sustainability considerations to evaluate the use of bio-based and non-renewable Brønsted acidic ionic liquids to catalyse Fischer esterification reactions

Using metrics and sustainability considerations to evaluate the use of bio-based and non-renewable Brønsted acidic ionic liquids to catalyse Fischer esterification reactions

Feasibility of Recycling Ultrafine Leaching Residue by Backfill: Experimental and CFD Approaches

Corrosion Inhibition of Heat Treated Mild Steel With Neem Leave Extract in a Chloride Medium

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