Photodegradation of ethylenediaminetetraacetic acid (EDTA) and ethylenediamine disuccinic acid (EDDS) within natural UV radiation range

Metsärinne, Sirpa; Tuhkanen, Tuula; Aksela, Reijo

doi:10.1016/s0045-6535(01)00022-4

Cited by 88 publications

(46 citation statements)

References 12 publications

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“…4). Effects of pH and H 2 O 2 on the percentage of iron retained in solution are minimal, although the curvature observed around pH 6.5 seems to be in accordance with Metsarinne et al [34], who have observed higher stability of Fe(III)-EDDS at pH 6.5 both in distilled and lake water. The rate of energy accumulation in the CPC tubes was higher than in the solar simulated system considering an average radiation of 30 W m −2 (about 0.17 kJ min −1 L −1 in the CPC compared to 0.03 kJ min −1 L −1 in the simulator), so the process was significantly faster.…”

Section: H 2 O 2 Consumption Efficiency (R P ) and Iron Availabilitysupporting

confidence: 88%

“…It is mentioned in the literature that the ratio between Fe(III) and EDDS in Fe(III)-EDDS species prevalent between pH 5 and 8 is always 1:1 [30]. Additionally, Metsarinne et al [34] mentioned that while Fe(III)-EDDS is rapidly photodegraded, EDDS alone can be stable for days in both distilled and more complex lake water. Uncomplexed EDDS can thus be expected to remain stable for the duration of the experiment.…”

Section: H 2 O 2 Consumption Efficiency (R P ) and Iron Availabilitymentioning

confidence: 99%

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Microcontaminant degradation in municipal wastewater treatment plant secondary effluent by EDDS assisted photo-Fenton at near-neutral pH: An experimental design approach

et al. 2015

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a b s t r a c tThis work aims to evaluate the applicability of EDDS (ethylenediamine-N,N -disuccinic acid) as an iron chelating agent for photo-Fenton treatment of municipal wastewater spiked with organic contaminants at near-neutral pH. A series of laboratory scale experiments are conducted under simulated sunlight in accordance with a central composite experimental design in order to define the most favorable conditions in terms of initial iron concentration (maintaining a molar ratio 1:2 of Fe:EDDS), H 2 O 2 and pH. The system is evaluated in terms of degradation efficiency, H 2 O 2 consumption and iron availability. The simulated system has been compared in terms of degradation efficiency with a 60 L compound parabolic collector (CPC), and significant correlation has been observed. An approach for estimating near-optimal regions of operability is also demonstrated.

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Section: H 2 O 2 Consumption Efficiency (R P ) and Iron Availabilitysupporting

confidence: 88%

Section: H 2 O 2 Consumption Efficiency (R P ) and Iron Availabilitymentioning

confidence: 99%

Microcontaminant degradation in municipal wastewater treatment plant secondary effluent by EDDS assisted photo-Fenton at near-neutral pH: An experimental design approach

et al. 2015

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“…All works discussed in this paper consider only the [SS]-isomer when referring to EDDS. The biodegradability of several chelating agents in activated sludge has been studied [48]. The authors of this study found that the EDTA molecule remained intact for up to 100 days, whereas EDDS was biodegraded rapidly in the activated sludge.…”

Section: Introductionmentioning

confidence: 96%

Induced Plant Accumulation of Lithium

et al. 2018

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Lithium's (Li) value has grown exponentially since the development of Li-ion batteries. It is usually accessed in one of two ways: hard rock mineral mining or extraction from mineral-rich brines. Both methods are expensive and require a rich source of Li. This paper examines the potential of agro-mining as an environmentally friendly, economically viable process for extracting Li from low grade ore. Agro-mining exploits an ability found in few plant species, to accumulate substantial amounts of metals in the above ground parts of the plant. Phyto-mined metals are then retrieved from the incinerated plants. Although the actual amount of metal collected from a crop may be low, the process has been shown to be profitable. We have investigated the suitability of several plant species including: Brassica napus and Helianthus annuus, as Li-accumulators under controlled conditions. Large plant trials were carried out with/without chelating agents to encourage Li accumulation. The question we sought to answer was, can any of the plant species investigated accumulate Li at levels high enough to justify using them to agro-mine Li. Results show maximum accumulated levels of >4000 mg/kg Li in some species. Our data suggests that agro-mining of Li is a potentially viable process.

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“…EDDS performs better than EDTA at solubilizing Cu and Zn from soils at pH 7 at equimolar ratios of chelating agent to metals (Hauser et al, 2005). A colorimetric assay, IC-ICP-MS, GC, and HPLC are the most powerful tools to determine EDDS in soils and plants (Ammann, 2002;Knepper, 2003;Metsarinne, Tuhkanen and Aksela, 2001;Takahashi et al, 1997Takahashi et al, , 1999Tandy et al, 2005;Vandevivere et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Influence of [S, S]-EDDS on Phytoextraction of Copper and Zinc byElsholtzia SplendensFrom Metal-Contaminated Soil

Sun

Luo

et al. 2007

International Journal of Phytoremediation

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Photodegradation of ethylenediaminetetraacetic acid (EDTA) and ethylenediamine disuccinic acid (EDDS) within natural UV radiation range

Cited by 88 publications

References 12 publications

Microcontaminant degradation in municipal wastewater treatment plant secondary effluent by EDDS assisted photo-Fenton at near-neutral pH: An experimental design approach

Microcontaminant degradation in municipal wastewater treatment plant secondary effluent by EDDS assisted photo-Fenton at near-neutral pH: An experimental design approach

Induced Plant Accumulation of Lithium

Influence of [S, S]-EDDS on Phytoextraction of Copper and Zinc byElsholtzia SplendensFrom Metal-Contaminated Soil

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