From initial treatment design to final disposal of chelating agents: a review of corrosion and degradation mechanisms

Almubarak, Tariq; Ng, Jun Hong; Ramanathan, Raja; Nasr‐El‐Din, Hisham A.

doi:10.1039/d1ra07272b

Cited by 12 publications

(1 citation statement)

References 130 publications

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“…Notably, MGDA does not carry the hazardous label associated with EDTA and NTA. However, it's worth noting that GLDA exhibits a higher degradation capacity in the OECD 301D test compared to MGDA [41][42]. MGDA demonstrates remarkable pH tolerance, ranging from pH 2 to pH 13.5, although it may not achieve the highest removal rates across all pH levels [43][44].…”

Section: Mgdamentioning

confidence: 99%

A comparative study on the efficacy of conventional and green chelating agents for soil heavy metal remediation

2024

TNS

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Soil heavy metal contamination poses significant risks to ecological balance, vegetation, agricultural productivity, and human health due to the toxicity, persistence, and resistance to degradation of heavy metal ions. Chelation presents a widely employed method for heavy metal ion removal. While conventional chelating agents exhibit high removal efficiencies, they are associated with ecological hazards. In contrast, green chelating agents have gained prominence for their environmentally friendly attributes. This paper meticulously examines the heavy metal removal efficiencies, mechanisms, application advantages and limitations, as well as optimal pH ranges of both the traditional chelating agent Ethylenediaminetetraacetic acid (EDTA) and the green chelating agents Tetrasodium glutamate diacetate (GLDA), Methylglycine diacetic acid (MGDA), and [S, S]-ethylenediaminedisuccinic acid (EDDS). A comprehensive comparison reveals that EDDS exhibits superior performance followed by MGDA, GLDA, and EDTA, with MGDA displaying the broadest pH range spanning from 2 to 13.5. EDDS emerges as the most biodegradable option. Moreover, in terms of elimination rates, both MGDA and EDDS demonstrate comparable efficacy to EDTA. In conclusion, the green chelating agents scrutinized herein hold promise to potentially supplant conventional EDTA in large-scale practical applications.

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Section: Mgdamentioning

confidence: 99%

A comparative study on the efficacy of conventional and green chelating agents for soil heavy metal remediation

2024

TNS

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Multifunctional Additives for Synergistic Scale and Corrosion Inhibition in High‐Stress Systems

Kamaratou,

Liakaki‐Stavropoulou,

Demadis

2024

Industrial Scale Inhibition

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Electrochemical behavior of In–DTPA complexes: anodic dissolution, cathodic reduction, and electrochemical nucleation

Bekey,

Badavamova,

Vacandio

et al. 2023

J Solid State Electrochem

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From initial treatment design to final disposal of chelating agents: a review of corrosion and degradation mechanisms

Abstract: In this review, we discuss how chelating agents and their products can cause corrosion and how it goes through the oilfield cycle including thermal, photo, and biodegradation.

Cited by 12 publications

References 130 publications

A comparative study on the efficacy of conventional and green chelating agents for soil heavy metal remediation

A comparative study on the efficacy of conventional and green chelating agents for soil heavy metal remediation

Multifunctional Additives for Synergistic Scale and Corrosion Inhibition in High‐Stress Systems

Electrochemical behavior of In–DTPA complexes: anodic dissolution, cathodic reduction, and electrochemical nucleation

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