Category: 117-96-4

Redeker, Maria published the artcileRemoval of iodinated X-ray contrast medium diatrizoate by anaerobic transformation, Application In Synthesis of 117-96-4, the main research area is diatrizoate removal anaerobic transformation wastewater treatment.

The iodinated X-ray contrast medium diatrizoate is known to be very persistent in current wastewater treatment as well as in environmental compartments. In this study, the potential of anaerobic processes in soils, sediments, and during wastewater treatment to remove and transform diatrizoate was investigated. In anaerobic batch experiments with soil and sediment seven biol. formed transformation products (TPs) as well as the corresponding transformation pathway were identified. The TPs resulted from successive deiodinations and deacetylations. The final TP 3,5-diaminobenzoic acid (DABA) was stable under anaerobic conditions. However, DABA was further transformed under air atm., indicating the potential for the mineralization of diatrizoate by combining anaerobic and aerobic conditions. With the development of a methodol. using complementary liquid chromatog.-electrospray ionization-tandem mass spectrometry and liquid chromatog.-inductively coupled plasma-mass spectrometry techniques, all identified TPs were quantified and the mass balance could be closed without having authentic standards for four of the TPs available. The detection and quantification of diatrizoate TPs in groundwater, in tech. wetlands with anaerobic zones, and in a pilot wastewater treatment plant established for anaerobic treatment highlights the transferability and up-scaling of the results attained by laboratory experiments to environmental conditions.

Environmental Science & Technology published new progress about Biological wastewater treatment, anaerobic. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application In Synthesis of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Rui published the artcileRemoval of micropollutants in a ceramic membrane bioreactor for the post-treatment of municipal wastewater, COA of Formula: C11H9I3N2O4, the main research area is micropollutant ceramic membrane bioreactor municipal wastewater treatment.

Micropollutants, such as pharmaceuticals, endocrine disrupting compounds, and personal care products, have become an emerging environmental issue. In general, they are only partially removed by conventional wastewater treatment plants (WWTPs), and their presence in surface waters may have harmful effects on aquatic organisms and human health. In this study, a pilot-scale ceramic membrane bioreactor (cMBR) was employed as a polishing step in a WWTP to further treat the effluent of the WWTP for 15 mo. The removal of COD (COD) and 29 micropollutants, the process stability, and the development of activated sludge in the cMBR system were investigated. After about 300 days of operation, the cMBR system established stable operating conditions with suspended solids (SS) concentrations and volatile suspended solids (VSS) concentrations at (0.045 ± 0.004) g/L and (0.028 ± 0.005) g/L, resp. Under these conditions, the cMBR provided stable removal of organic matter and micropollutants. The removal of COD (COD) was (37.4 ± 3.8)%, and the removal of 29 micropollutants was substance specific and ranged from (-3.6 ± 5.9)% to (42.4 ± 3.0)%. Although the sludge concentration developed in the cMBR was much lower than that in the WWTP aeration tank (SS at 2.3 g/L), the activity of sludge in the cMBR for oxygen consumption and micropollutants removal was more than 10 times higher than that in the WWTP aeration tank. Moreover, as a complement to the cMBR system, an osmosis membrane system was investigated that could completely remove the micropollutants (below detection limits) in the cMBR effluent and achieve high water quality.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Biological wastewater treatment, membrane bioreactor. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chen, Jia-Qi published the artcileSize-Dependent Response of the Reductive Reactivity of Zerovalent Iron toward the Coexistence of Natural Organic Matter, Product Details of C11H9I3N2O4, the main research area is zerovalent iron natural organic matter reductive reactivity.

Although the existence of ubiquitous natural organic matter (NOM) exerts significant effects on the performance of zerovalent iron (ZVI), size-dependent response of the reactivity of ZVI toward NOM under both aerobic and anaerobic conditions has not been considered. In this study, the oxic removal and anoxic removal of the pollutant diatrizoate (DTA) by mechanochem. prepared ZVI of varying sizes in the presence of humic acid (HA), a typical NOM, were investigated comparatively. When oxygen was present, the effect of HA on DTA degradation transformed from promotion to inhibition as the particle size of ZVI decreased from microscale (mZVI) to nanoscale (nZVI). By contrast, in the absence of oxygen, HA always suppressed DTA removal regardless of ZVI size. Under aerobic conditions, HA complexed with Fe(III) (hydr)oxides and then detached from the mZVI surface, leading to the depassivation effect and promotion of at. hydrogen (H*), while HA and HA-Fe(III) complexes coated the surface of nZVI with a relatively smaller size and suppressed the formation of H*. Under anaerobic conditions, adsorbed HA and associated HA-Fe(II) complexes covered the surfaces of mZVI and nZVI to different extents, resulting in the occupation of active sites and inhibiting generation of H*. This study provides an in-depth insight into the interaction between ZVI and NOM and may serve as theor. guidance for the application of ZVI-based technologies.

ACS ES&T Engineering published new progress about Aeration wastewater treatment, extended aeration. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Product Details of C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tang, Kai published the artcileRemoval of pharmaceuticals, toxicity and natural fluorescence through the ozonation of biologically-treated hospital wastewater, with further polishing via a suspended biofilm, Category: isoquinoline, the main research area is biofilm hospital wastewater treatment ozonation.

In the present study, a pilot-scale ozonation system was introduced as post treatment to reduce the pharmaceuticals and toxicity in the effluent of a pilot-scale Moving Bed Biofilm Reactor (MBBR) treating hospital wastewater. The ozonated effluent was polished further by suspended biofilm carriers to remove biodegradable organic matter and toxicity generated from ozonation byproducts. A laboratory ozonation system was used to mimic the experiments, which were carried out at the pilot plant so that the removal of pharmaceuticals in the pilot and laboratory experiments could be compared. Delivered ozone dose achieved 90% removal of pharmaceutical was obtained and it was normalized to dissolved organic carbon (DOC). These normalized results show that trimethoprim was eliminated by ozone easier than other pharmaceuticals. Fluorescence was found to be highly correlated to the removal of pharmaceuticals, and fluorescence with a wavelength of 275 nm of excitation and 310 nm of emission had the closest correlation. After polishing MBBR was introduced into the ozonated wastewater, half of its protein-like fluorophore was removed. The toxicity of the hospital wastewater during MBBR treatment was measured by Vibrio fischeri, the inhibition of which decreased from 80% to 50%. By applying ozonation, this inhibition reduced to 20%.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Biological wastewater treatment (moving bed biofilm reactor). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wols, B. A. published the artcileDegradation of 40 selected pharmaceuticals by UV/H2O2, Synthetic Route of 117-96-4, the main research area is UV hydrogen peroxide photolysis pharmaceutical compound degradation; Advanced oxidation process; Hydrogen peroxide; Pharmaceuticals; UV; Water treatment.

The occurrence of pharmaceuticals in source waters is increasing. Although UV advanced oxidation is known to be an effective barrier against micropollutants, degradation rates are only available for limited amounts of pharmaceuticals. Therefore, the degradation of a large group of pharmaceuticals has been studied in this research for the UV/H2O2 process under different conditions, including pharmaceuticals of which the degradation by UV/H2O2 was never reported before (e.g., metformin, paroxetine, pindolol, sotalol, venlafaxine, etc.). Monochromatic low pressure (LP) and polychromatic medium pressure (MP) lamps were used for three different water matrixes. In order to have well defined hydraulic conditions, all experiments were conducted in a collimated beam apparatus Degradation rates for the pharmaceuticals were determined For those compounds used in this research that are also reported in literature, measured degradation results are in good agreement with literature data. Pharmaceutical degradation for only photolysis with LP lamps is small, which is increased by using a MP lamp. Most of the pharmaceuticals are well removed when applying both UV (either LP or MP) and H2O2. However, differences in degradation rates between pharmaceuticals can be large. For example, ketoprofen, prednisolone, pindolol are very well removed by UV/H2O2, whereas metformin, cyclophosphamide, ifosfamide are very little removed by UV/H2O2.

Water Research published new progress about Bicarbonates Role: OCU (Occurrence, Unclassified), OCCU (Occurrence). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Synthetic Route of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schneider, Ilona published the artcilePost-treatment of ozonated wastewater with activated carbon and biofiltration compared to membrane bioreactors: Toxicity removal in vitro and in Potamopyrgus antipodarum, Recommanded Product: Diatrizoic Acid, the main research area is phosphorous activated carbon membrane bioreactor biofiltration ozonation wastewater treatment; Advanced wastewater treatment; Endocrine disrupting chemicals; On-site testing; Reporter-gene assays; Sewage; Transformation product.

Wastewater treatment plants are major point sources of (micro)pollutant emissions and advanced wastewater treatment technologies can improve their removal capacity. While abundant data on individual advanced treatment technologies is available, there is limited knowledge regarding the removal performance of ozonation combined with multiple post-treatments and stand-alone membrane bioreactors. This is especially true for the removal of in vitro and in vivo toxicity. Therefore, we investigated the removal of 40 micropollutants and toxicity by a pilot-scale ozonation with four post-treatments: non-aerated and aerated granular activated carbon and biol. filtration. In addition, two stand-alone membrane bioreactors fed with untreated wastewater and one MBR operating with ozonated partial flow recirculation were analyzed. Aqueous and extracted samples were analyzed in vitro for (anti)estrogenic, (anti)androgenic and mutagenic effects. To assess in vivo effects, the mudsnail Potamopyrgus antipodarum was exposed in an on-site flow-through system. Multiple in vitro effects were detected in conventionally treated wastewater including estrogenic and anti-androgenic activity. Ozonation largely removed these effects, while anti-estrogenic and mutagenic effects increased suggesting the formation of toxic transformation products. These effects were significantly reduced by granular activated carbon being more effective than biol. filtration. The membrane bioreactor performed similarly to the conventional treatment while the membrane bioreactor with ozonation had a comparable removal performance like ozonation. Conventionally treated wastewater increased the growth of P. antipodarum. Ozonation reduced the reproduction indicating a potential formation of toxic transformation products. In the post-treatments, these effects were compensated or remained unaffected. The effluents of the membrane bioreactors induced reproductive toxicity. Our results show that ozonation is effective in further reducing toxicity and micropollutant concentrations However, the formation of toxicity requires a post-treatment. Here, ozonation coupled to granular activated carbon filtration seemed the most promising treatment process.

Water Research published new progress about Activated carbon fibers Role: NUU (Other Use, Unclassified), USES (Uses). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Susanna, Deepti published the artcileComprehensive insight into the extract optimization, phytochemical profiling, and biological evaluation of the medicinal plant Nothapodytesfoetida, Recommanded Product: Diatrizoic Acid, the main research area is Nothapodytes foetida medicinal plant extract phytochem optimization.

Nothapodytes foetida is an endemic medicinal plant belonging to the family Icacinaceae from the deciduous forests of the Western Ghats. The extract yield, nutritional and phytochem. composition, metabolite profiling of N. foetida leaf extract has been analyzed, along with the assessment of its antioxidant, anti-inflammatory, anti-microbial and anti-cancer potentialities. The effect of different extracting solvents and techniques was optimized to obtain maximum extract yield, and ultrasonication-assisted extraction with aqueous methanol as the solvent was chosen. Appreciable amounts of total phenolics (67.59 mg GAE/g DW), total flavonoids (24.75 mg QCE/g DW), and total tannins (55.67 mg GAE/g DW) were detected. FT-IR spectroscopy also confirmed the presence of alcs., phenols, alkanes, amino acids, carboxylic acids, nitro compounds and amines in the extract Further, GC-MS anal. detected the presence of 33 volatile compounds that comprised of viminalol, α, β-amyrins, β, γ-sitosterol, 9-methoxy-camptothecin, lupeols, and various di and tri terpenes in significant quantities. 1H NMR spectra revealed well-resolved signals for flavonoids, amino acids (trp, his, tyr, phe, ala, ile, gly, gln, thr, val) and organic acids. LC-MS anal. of the methanolic N. foetida extract depicted a higher polyphenolic content followed by the ethanolic and aqueous extracts Addnl., the aqueous methanolic extract of N. foetida exhibited significant in-vitro antioxidant, anti-inflammatory, anti-microbial activity and anti-cancer activity. The overall results of this work ascertain the potency of N. foetida in nutraceutical and biomedical applications.

Biocatalysis and Agricultural Biotechnology published new progress about Alcohols Role: FFD (Food or Feed Use), BIOL (Biological Study), USES (Uses). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chiaia-Hernandez, Aurea C. published the artcileSuspect and nontarget screening approaches to identify organic contaminant records in lake sediments, COA of Formula: C11H9I3N2O4, the main research area is suspect nontarget screening identification organic contaminant record lake sediment; identification organic contaminant record lake sediment Switzerland.

Sediment cores provide a valuable record of historical contamination, but so far, new anal. techniques such as high-resolution mass spectrometry (HRMS) have not yet been applied to extend target screening to the detection of unknown contaminants for this complex matrix. A combination of target, suspect, and nontarget screening using liquid chromatog. (LC)-HRMS/MS was performed on extracts from sediment cores obtained from Lake Greifensee and Lake Lugano located in the north and south of Switzerland, resp. A suspect list was compiled from consumption data and refined using the expected method coverage and a combination of automated and manual filters on the resulting measured data. Nontarget identification efforts were focused on masses with Cl and Br isotope information available that exhibited mass defects outside the sample matrix, to reduce the effect of anal. interferences. In silico methods combining the software MOLGEN-MS/MS and MetFrag were used for direct elucidation, with addnl. consideration of retention time/partitioning information and the number of references for a given substance. The combination of all available information resulted in the successful identification of 3 suspect (chlorophene, flufenamic acid, lufenuron) and 2 nontarget compounds (hexachlorophene, flucofuron), confirmed with reference standards, as well as the tentative identification of 2 chlorophene congeners (dichlorophene, bromochlorophene) that exhibited similar time trends through the sediment cores. This study demonstrates that complementary application of target, suspect, and nontarget screening can deliver valuable information despite the matrix complexity and provide records of historical contamination in 2 Swiss lakes with previously unreported compounds

Analytical and Bioanalytical Chemistry published new progress about Amine oxides, C10-16-alkyldimethyl Role: POL (Pollutant), OCCU (Occurrence). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

van Bergen, Tamara J. H. M. published the artcileDo initial concentration and activated sludge seasonality affect pharmaceutical biotransformation rate constants?, SDS of cas: 117-96-4, the main research area is activated sludge pharmaceutical biotransformation rate constant seasonality affect; Bacterial community; Kinetics; Nitrification; Organic micropollutants; Sorption; Wastewater treatment plants.

Pharmaceuticals find their way to the aquatic environment via wastewater treatment plants (WWTPs). Biotransformation plays an important role in mitigating environmental risks; however, a mechanistic understanding of involved processes is limited. The aim of this study was to evaluate potential relationships between first-order biotransformation rate constants (kb) of nine pharmaceuticals and initial concentration of the selected compounds, and sampling season of the used activated sludge inocula. Four-day bottle experiments were performed with activated sludge from WWTP Groesbeek (The Netherlands) of two different seasons, summer and winter, spiked with two environmentally relevant concentrations (3 and 30 nM) of pharmaceuticals. Concentrations of the compounds were measured by LC-MS/MS, microbial community composition was assessed by 16S rRNA gene amplicon sequencing, and kb values were calculated The biodegradable pharmaceuticals were acetaminophen, metformin, metoprolol, terbutaline, and phenazone (ranked from high to low biotransformation rates). Carbamazepine, diatrizoic acid, diclofenac, and fluoxetine were not converted. Summer and winter inocula did not show significant differences in microbial community composition, but resulted in a slightly different kb for some pharmaceuticals. Likely microbial activity was responsible instead of community composition In the same inoculum, different kb values were measured, depending on initial concentration In general, biodegradable compounds had a higher kb when the initial concentration was higher. This demonstrates that Michealis-Menten kinetic theory has shortcomings for some pharmaceuticals at low, environmentally relevant concentrations and that the pharmaceutical concentration should be taken into account when measuring the kb in order to reliably predict the fate of pharmaceuticals in the WWTP. Key points: • Biotransformation and sorption of pharmaceuticals were assessed in activated sludge. • Higher initial concentrations resulted in higher biotransformation rate constants for biodegradable pharmaceuticals. • Summer and winter inocula produced slightly different biotransformation rate constants although microbial community composition did not significantly change.

Applied Microbiology and Biotechnology published new progress about 16S rRNA Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, SDS of cas: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schaper, Jonas L. published the artcileFate of Trace Organic Compounds in the Hyporheic Zone: Influence of Retardation, the Benthic Biolayer, and Organic Carbon, Recommanded Product: Diatrizoic Acid, the main research area is trace organic compound fate hyporheic zone lowland river Germany.

The fate of 28 trace organic compounds (TrOC) in the hyporheic zone (HZ) of an urban lowland river in Berlin, Germany, was assessed. Water was were collected hourly over 17-h from the river and at three HZ depths using mini-point samplers. Four relatively variable time series were subsequently used to calculate first-order removal rates and retardation coefficients with a one-dimensional reactive transport model. Reversible sorption processes led to substantial retardation of many TrOC along the studied hyporheic flow path. Some TrOC (e.g., dihydroxy-carbamazepine, O-desmethylvenlafaxine, venlafaxine) were stable in the HZ; others were readily removed with half-lives in the first 10-cm of the HZ of 0.1 ± 0.01 h (iopromide) to 3.3 ± 0.3 h (tetramadol). Others were readily removed with half-lives in the first 10-cm of the HZ from 0.1 ± 0.01 h for iopromide to 3.3 ± 0.3 h for tramadol. Removal rate constants of the majority of reactive TrOC were highest in the first 10-cm of the HZ, where removal of biodegradable dissolved organic matter was also highest. Since conditions were oxic along the top 30-cm of the studied flow path, the authors attributed this finding to high microbial activity typically associated with the shallow HZ. Hence frequent, short vertical hyporheic exchange flows could be more important for reach-scale TrOC removal than long, lateral hyporheic flow paths.

Environmental Science & Technology published new progress about Dispersion of materials (hyporheic zone water and sediment thermal trace organic). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem