Biodegradation of the iodinated X-ray contrast media diatrizoate and iopromide

Kalsch, Wolfgang

doi:10.1016/s0048-9697(98)00340-4

Cited by 122 publications

(68 citation statements)

References 15 publications

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“…H/D-exchange experiments and derivatization of the carboxy groups to methyl esters provided definitive confirmation for the metabolite identities. Overall, the iodinated ring of iopromide remained intact during the biodegradation processes, in contrast to the outcomes reported in [22].…”

Section: Identification Of Transformation Productscontrasting

confidence: 83%

Analyzing transformation products of synthetic chemicals

Pérez

Petrović

Barceló

2008

The Handbook of Environmental Chemistry

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Section: Identification Of Transformation Productscontrasting

confidence: 83%

Analyzing transformation products of synthetic chemicals

Pérez

Petrović

Barceló

2008

The Handbook of Environmental Chemistry

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“…This compound would pass conventional wastewater treatment plant since sorption onto sludge or sediments is not expected because it is very polar, is highly water soluble (0.97 mol L −1 , 770 g L −1 ), and has low lipophilicity (log K OW = −2.33) (Löffler et al 2005;Steger-Hartmann et al 1999). Some treatment systems, such as advanced oxidation (Azerrad et al 2014), aerobic (Kalsch 1999;Xu et al 2014), stable nitrifying enrichment cultures (Dawas-Massalha et al 2014), fungus (Gros et al 2014), electrochemical (Lütke Eversloh et al 2014, and reductive treatment with catalysts (Knitt et al 2008), have been examined to determine their potential application. Among these strategies, just the electrochemical treatment of reverse osmosis concentrates reported up to 96 % of mineralization after about 7.5 h (Lütke Eversloh et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Immobilization of biogenic Pd(0) in anaerobic granular sludge for the biotransformation of recalcitrant halogenated pollutants in UASB reactors

Pat-Espadas

Razo-Flores

Rangel-Mendez

et al. 2015

Appl Microbiol Biotechnol

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The capacity of anaerobic granular sludge to reduce Pd(II), using ethanol as electron donor, in an upflow anaerobic sludge blanket (UASB) reactor was demonstrated. Results confirmed complete reduction of Pd(II) and immobilization as Pd(0) in the granular sludge. The Pd-enriched sludge was further evaluated regarding biotransformation of two recalcitrant halogenated pollutants: 3-chloro-nitrobenzene (3-CNB) and iopromide (IOP) in batch and continuous operation in UASB reactors. The superior removal capacity of the Pd-enriched biomass when compared with the control (not exposed to Pd) was demonstrated in both cases. Results revealed 80 % of IOP removal efficiency after 100 h of incubation in batch experiments performed with Pd-enriched biomass whereas only 28 % of removal efficiency was achieved in incubations with biomass lacking Pd. The UASB reactor operated with the Pd-enriched biomass achieved 81 ± 9.5 % removal efficiency of IOP and only 61 ± 8.3 % occurred in the control reactor lacking Pd. Regarding 3-CNB, it was demonstrated that biogenic Pd(0) promoted both nitro-reduction and dehalogenation resulting in the complete conversion of 3-CNB to aniline while in the control experiment only nitro-reduction was documented. The complete biotransformation pathway of both contaminants was proposed by high-performance liquid chromatography-mass spectrometry (HPLC-MS) analysis evidencing a higher degree of nitro-reduction and dehalogenation of both contaminants in the experiments with Pd-enriched anaerobic sludge as compared with the control. A biotechnological process is proposed to recover Pd(II) from industrial streams and to immobilize it in anaerobic granular sludge. The Pd-enriched biomass is also proposed as a biocatalyst to achieve the biotransformation of recalcitrant compounds in UASB reactors.

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“…A batch biodegradation study was monitored for both loss and mineralization of the parent compound. Biotransformation of 85% of the iopromide was observed, whereas no mineralization was detected (Kalsch 1999).…”

Section: Biotransformation Studiesmentioning

confidence: 94%

Biodegradation and removal of pharmaceuticals and personal care products in treatment systems: a review

2008

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Pharmaceuticals and personal care products (PPCPs) have been the focus of much recent research as concerns rise about their occurrence in bodies of water worldwide. In an effort to characterize the risk and determine the prevalence of these micropollutants in lakes and rivers, many researchers are examining PPCP removal from impaired water during wastewater treatment and water recycling (soil passage) processes. Biodegradation studies and projects considering combinations of biodegradation and other removal processes have been conducted over a wide range of compound categories and therapeutic classes, as well as across different systems and scales of study. This review summarizes the extent of PPCP removal observed in these various systems.

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Biodegradation of the iodinated X-ray contrast media diatrizoate and iopromide

Cited by 122 publications

References 15 publications

Analyzing transformation products of synthetic chemicals

Analyzing transformation products of synthetic chemicals

Immobilization of biogenic Pd(0) in anaerobic granular sludge for the biotransformation of recalcitrant halogenated pollutants in UASB reactors

Biodegradation and removal of pharmaceuticals and personal care products in treatment systems: a review

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