Degradation of trichloroethylene using solvent-responsive polymer coated Fe nanoparticles

Wang, Wei; Zhou, Minghua

doi:10.1016/j.colsurfa.2010.08.031

Cited by 22 publications

(6 citation statements)

References 51 publications

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“…The release of KMnO 4 from the surface of the PMMA matrix left some patches and holes under SEM imaging (see Figure 4(b)). The structural changes on glassy polymer surfaces have been attributed to possible effects of STRESS and strains on surface as the material swells [9]. This is suggested to be as a result of response to any of the following: effects of temperature change, effects of activity differences, and effects of prehistory and sample dimensions [10]- [12].…”

Section: Analysis Of Releasementioning

confidence: 99%

Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix

Ighere¹,

Chawla²

2014

JMMCE

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Excess amount of potassium permanganate has often been used in-situ for chemical oxidation of contaminated sites. The consequences are not limited to secondary contamination and cost but also inefficient remediation. Encapsulation of permanganate using PMMA enables controlled dissolution of the oxidant and aids long-term processes. This paper focuses on the oxidant release efficiency from polymer matrix and analysis of data using existing models for glassy polymers. The efficiency profile obtained using mass ratios of 2:1, 4:1, and 8:1 of PMMA to KMnO 4 showed a decrease in the extent of release with increasing mass ratio with 79%, 55.35% and 33.59% respectively. Patches were noticed on the surfaces of PMMA after the release of KMnO 4 , these were attributed to crevices created by the non-fickian diffusion of the oxidant.

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Section: Analysis Of Releasementioning

confidence: 99%

Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix

Ighere¹,

Chawla²

2014

JMMCE

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“…The injection of solid particles in the subsurface, however, is much more challenging than initially expected, due to (1) aggregation of especially nano-sized ZVI particles (nZVI) resulting in filtration of the particles in the porous medium making them less mobile and less reactive (Kanel et al, 2007;Phenrat et al, 2009;Saleh et al, 2007;Schrick et al, 2004) and (2) sedimentation of mainly microscale zerovalent iron (mZVI) particles in the slurry reservoir, tubing and injection wells prior to and during injection caused by the high density and size of particles (Elimelech et al, 1995;Vecchia et al, 2009). Numerous research groups have carried out investigations on stability and dispersion of nanoparticles (Comba and Sethi, 2009;He et al, 2009;Tosco et al, 2012;Vecchia et al, 2009;Wang and Zhou, 2010). They mainly involve laboratory scale tests, although in recent years the number of field applications has increased (Klaine et al, 2008;Varadhi et al, 2005;Zhang, 2003).…”

Section: Introductionmentioning

confidence: 97%

Reactivity recovery of guar gum coupled mZVI by means of enzymatic breakdown and rinsing

Velimirović

Chen

Simons

et al. 2012

Journal of Contaminant Hydrology

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“…Surfactants or polymers can be added to the NP surfaces to encourage steric hindrance and alter the surface charge to prevent electrostatic attraction. The NPs can also be incorporated into other mobile structures such as carbon forms, silica and colloidal clays .…”

Section: Introductionmentioning

confidence: 99%

Nano‐Composites for Water Remediation: A Review

2014

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As global populations continue to increase, the pressure on water supplies will inevitably intensify. Consequently the international need for more efficient and cost effective water remediation technologies will also rise. The introduction of nano-technology into the industry may represent a significant advancement and zero-valent iron nano-particles (INPs) have been thoroughly studied for potential remediation applications. However, the application of water dispersed INP suspensions is limited and somewhat contentious on the grounds of safety, whilst INP reaction mechanisms, transport properties and ecotoxicity are areas still under investigation. Theoretically, the development of nano-composites containing INPs to overcome these issues provides the logical next step for developing nano-materials that are better suited to wide application across the water industry. This review provides an overview of the range of static, bulk nano-composites containing INPs being developed, whilst highlighting the limitations of individual solutions, overall classes of technology, and lack of comparative testing for nano-composites. The review discusses what further developments are needed to optimize nano-composite water remediation systems to subsequently achieve commercial maturity.

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Degradation of trichloroethylene using solvent-responsive polymer coated Fe nanoparticles

Cited by 22 publications

References 51 publications

Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix

Controlled-Release Analysis of Potassium Permanganate Using PMMA Matrix

Reactivity recovery of guar gum coupled mZVI by means of enzymatic breakdown and rinsing

Nano‐Composites for Water Remediation: A Review

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