Category: 117-96-4

Zhou, Guan-Nan published the artcileEnhanced hydrodeiodination of iodinated contrast medium by sulfide-modified nano-sized zero-valent iron: Kinetics, mechanisms and application prospects, Name: Diatrizoic Acid, the main research area is sulfide zero valent iron hydrodeiodination diatrizoate.

The performance and possible mechanisms of iodinated contrast medium diatrizoate (DTA) removal by sulfide-modified nano-sized zero-valent iron (S-nZVI) without the presence of oxygen were investigated in this study. It was shown that the degradation efficiency of 30μM DTA was observably enhanced by 2 g L-1 S-nZVI (S/Fe = 0.25) compared to nZVI. Kinetic anal. indicated that the three-step deiodination process of DTA removal by S-nZVI could be appropriately fitted by pseudo-first-order kinetic model. The first-step kinetic rate constant of DTA removal reached to 2.22 h-1 with the utilization of S-nZVI, which was 5.2 times higher than that of nZVI. The enhancement mechanism for DTA removal by S-nZVI was confirmed as accumulating more at. hydrogen (H*) via the inhibition of hydrogen recombination. Moreover, it was found that the degradation rate of DTA was optimal when the S/Fe ratio attained at 0.25. The DTA removal performance exhibited a promoting trend with the increasing of S-nZVI dosage, while the existence of humic acid or artificial groundwater environment showed an inhibition effect on the degradation rate of DTA by S-nZVI. Addnl., the comparison of reduction capacity between S-nZVI and nZVI was evaluated in continuous flow systems, indicating that S-nZVI would likely present more practical application prospects on DTA removal than nZVI.

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wu, Yangtao published the artcileComparison of diatrizoate degradation by UV/chlorine and UV/chloramine processes: Kinetic mechanisms and iodinated disinfection byproducts formation, Synthetic Route of 117-96-4, the main research area is diatrizoate degradation chlorine chloramine disinfection byproduct wastewater treatment.

This study compared the degradation efficiency of diatrizoate (DTA) by UV/chlorine and UV/chloramine processes. DTA could be effectively degraded by the UV/chlorine and UV/chloramine processes compared with chlorination and chloramination solely. Although the UV/chlorine process was more sensitive to the variations of oxidant dosages, solution pH, the concentration of bicarbonate and chloride, UV/chlorine degraded DTA more efficiently than UV/chloramine process. The reactive chlorine species (RCS) and hydroxyl radical (HO·) are predominant contributors to DTA degradation in the UV/chlorine and UV/chloramine processes resp., and the specific contribution of each reactive specie changed with solution pH. The performance of UV/chlorine and UV/chloramine processes on DTA degradation was obviously inhibited in natural waters (e.g., wastewater, rainwater, river water and tap water), however, degradation of DTA in the UV/chlorine are still satisfactory compared with UV/chloramine process. Formation of chloroform, dichloroacetonitrile, and iodoform (IF) from DTA was observed in both UV/chlorine and UV/chloramine processes. It is notable that formation potential of IF from DTA was significantly enhanced in UV/chloramine process, and thus the overall cytotoxicity of generated DBPs in UV/chloramine process is far greater than that in UV/chlorine process.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Oxidative wastewater treatment. 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

Banaschik, Robert published the artcilePotential of pulsed corona discharges generated in water for the degradation of persistent pharmaceutical residues, Recommanded Product: Diatrizoic Acid, the main research area is pulsed corona discharge water degradation pharmaceutical residue; Advanced oxidation; Diclofenac; Ethinylestradiol; Hydroxyl radicals; Non-thermal plasma; Phenol.

Anthropogenic pollutants and in particular pharmaceutical residues are a potential risk for potable water where they are found in increasing concentrations Different environmental effects could already be linked to the presence of pharmaceuticals in surface waters even for low concentrations Many pharmaceuticals withstand conventional water treatment technologies. Consequently, there is a need for new water purification techniques. Advanced oxidation processes (AOP), and especially plasmas with their ability to create reactive species directly in water, may offer a promising solution We developed a plasma reactor with a coaxial geometry to generate large volume corona discharges directly in water and investigated the degradation of seven recalcitrant pharmaceuticals (carbamazepine, diatrizoate, diazepam, diclofenac, ibuprofen, 17α-ethinylestradiol, trimethoprim). For most substances we observed decomposition rates from 45% to 99% for treatment times of 15-66 min. Especially ethinylestradiol and diclofenac were readily decomposed As an inherent advantage of the method, we found no acidification and only an insignificant increase in nitrate/nitrite concentrations below legal limits for the treatment. Studies on the basic plasma chem. processes for the model system of phenol showed that the degradation is primarily caused by hydroxyl radicals.

Water Research published new progress about Acidification water pollution. 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

Yang, Tao published the artcileActivation of ferrate(VI) by sulfite for effectively degrading iodinated contrast media and synchronously controlling I-DBPs formation, Safety of Diatrizoic Acid, the main research area is iopamidol oxidation adsorption water purification ferrate sulfite.

Iodinated X-ray contrast media (ICM) are widely detected in the aqueous environment, which pose risks of iodinated disinfection byproducts (I-DBPs) in the subsequent disinfection treatment. Herein, a novel advanced oxidation process of ferrate(VI) and sulfite (Fe(VI)/sulfite) was employed in removing ICM and controlling I-DBPs formation. The results showed that the Fe(VI)/sulfite process effectively degraded ICM and the removal efficiency of iopamidol (IPM) ranged from 55.4% to 87.7% at pH 6-10 within 120 s. Based on the results of quenching and probing experiments, SO•-4 was identified as the predominant oxidant for IPM decomposition at pH 6-10. IPM transformation pathway mainly involved deiodination, hydrogen abstraction, hydroxyl addition, amide hydrolysis, and amino oxidation The iodine on the benzene ring was released into the solution as I- and then I- was partly oxidized to IO-3 during the oxidation of IPM, the concentration of I- and IO-3 was 0.34 and 0.13μM at pH 6, resp. Then, the formation of I-DBPs in the subsequent disinfection was investigated. It was found that I-DBPs concentration increased with increasing pH and enlarging Fe(VI) dosage as well as slightly increased in the presence of humic acid. Addnl., when solutions were filtered at pH 6 after oxidation, the removal ratios of I- and IO-3 were 41.2% and 53.8%, resp. Because the generated I- and IO-3 were adsorbed by in-situ formed ferric (oxyhydr)oxides from Fe(VI) reduction, the yield of I-DBPs was thereby reduced in the subsequent disinfection. Therefore, the Fe(VI)/sulfite process can effectively remove ICM and synchronously control I-DBPs formation in the subsequent disinfection.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorptive water purification. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Safety of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tuerk, J. published the artcileEfficiency, costs and benefits of AOPs removal of pharmaceuticals from the water cycle, SDS of cas: 117-96-4, the main research area is pharmaceutical wastewater treatment ozone advanced oxidation.

Different advanced oxidation processes (AOP) were developed for the treatment of highly loaded wastewater streams. Optimization of removal and improvement of efficiency were carried out on a laboratory, semiworks and pilot plant scale. The persistent cytostatic drug cyclophosphamide was selected as a reference substance regarding elimination and evaluation of the various oxidation processes because of its low degradability rate. The investigated processes are cost-efficient and suitable regarding the treatment of wastewater streams since they lead to efficient elimination of antibiotics and antineoplastics. A total reduction of toxicity was proven by means of the umuC-test. However, in order to reduce pharmaceuticals from the water cycle, it must be considered that the input of more than 80% of the Pharmaceuticals entering wastewater treatment systems results from private households. Therefore, advanced technologies should also be installed at wastewater treatment plants.

Water Science and Technology published new progress about Advanced wastewater treatment. 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

Ternes, Thomas A. published the artcileIntegrated Evaluation Concept to Assess the Efficacy of Advanced Wastewater Treatment Processes for the Elimination of Micropollutants and Pathogens, Formula: C11H9I3N2O4, the main research area is advanced wastewater treatment efficacy removal micropollutant pathogen.

A multidisciplinary concept has been developed to compare advanced wastewater treatment processes for their efficacy of eliminating micropollutants and pathogens. The concept is based on (i) the removal/formation of selected indicator substances and their transformation products (TPs), (ii) the assessment of ecotoxicity via in vitro tests, and (iii) the removal of pathogens and antibiotic resistant bacteria. It includes substances passing biol. wastewater treatment plants substances regulated or supposed to be regulated in the European Water Framework directive (WFD), TPs formed in biol. processes or during ozonization, agonistic/antagonistic endocrine activities, mutagenic/genotoxic activities, cytotoxic activities, further activities like neurotoxicity as well as antibiotics resistance genes and taxonomic gene markers for pathogens. At a pilot plant ozonization of conventional treated wastewater resulted in the removal of micropollutants and pathogens and the reduction of estrogenic effects, while the in vitro mutagenicity increased. Subsequent post-treatment of the ozonized water by granular activated carbon (GAC) significantly reduced the mutagenic effects as well as the concentrations of remaining micropollutants, while this was not the case for biofiltration (BF). The results demonstrate the suitability of the developed evaluation concept to assess processes of advanced wastewater treatment including ozonization and GAC by considering chem., ecotoxicol. and microbiol. parameters.

Environmental Science & Technology published new progress about Adsorptive wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Itzel, Fabian published the artcileComprehensive analysis of antagonistic endocrine activity during ozone treatment of hospital wastewater, Related Products of isoquinoline, the main research area is endocrine disrupting chem androgen estrogen ozonization hospital wastewater; Anti-androgenic; Anti-estrogenic; Effect directed analysis; Hospital wastewater; Non-target screening; Ozone.

To reduce the discharge of micropollutants, advanced wastewater treatment methods were investigated in the last years. Estrogenic effects were found to be reduced by ozonization. These activities are usually measured using genetically modified cell-based tests. As these bioassays are representing a sum parameter, also inhibitory effects such as antagonistic effects need to be further investigated as they are potentially reducing the detected activities. Therefore, a direct comparison of chem. target anal. and biol. equivalent concentrations measured by bioassays is often difficult. To investigate the fate of antagonistic activities and their role in mixtures with agonistic activities, two hospital wastewater treatment plants were studied after different treatment steps. Thereby highly enriched samples were analyzed by a combination of bioassays with chem. target and non-target analyses. In order to achieve an in-depth characterization of the antagonistic activities a fractionation of the enriched samples was performed. To identify relevant compounds an effect directed identification approach was used by combining high-resolution mass spectrometry and bioassays. The results showed a high reduction for estrogen and androgen activities. However, a constant antagonistic activity after membrane bioreactor and ozone treatment was observed A reduction of the antagonistic activity was observed after passing an activated carbon filter. The fractionation approach showed a specific finger-print of each sample of the different treatment steps. Hereby we could show that the composition of agonistic and antagonistic active compounds is changing after each treatment step while the overall measured activity stays the same. Using fractionation and the combination of bioassays the number of relevant features detected by chem. non-target screening could be reduced by > 85%. As a result the phosphorous flame retardant TCEP could be identified as anti-estrogen active. Future research should be done to identify more antagonistic active compounds and potentially active transformation products after ozone treatment.

Science of the Total Environment published new progress about Adsorptive wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lipp, Pia published the artcileImproved elimination of organic micropollutants by a process combination of membrane bioreactor (MBR) and powdered activated carbon (PAC), Recommanded Product: Diatrizoic Acid, the main research area is membrane bioreactor powd activated carbon organic micropollutant elimination.

Membrane bioreactors (MBR) are increasingly considered for de-centralized wastewater treatment. As MBR can be operated with higher sludge retention time and total suspended solids than conventional wastewater treatment plants (WWTP) the elimination of micropollutants is slightly better for MBR than for WWTP. However to be able to use the MBR filtrate for artificial ground water recharge it is necessary to further improve elimination of micropollutants. In this study, the MBR process has therefore been combined with the adsorption on powd. activated carbon (PAC). PAC was dosed to the MBR filtrate of a pilot plant and removed again after a contact time of 30 min. PAC was recycled to the MBR process tank to use the residual adsorption capacity. The process was operated continuously for a period of 110 d. With 5-10 mg l-1 PAC dosage a 50-80% improved elimination of carbamazepine and diclofenac could be achieved compared to the process without PAC.

Desalination and Water Treatment published new progress about Adsorptive wastewater treatment. 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

Nielsen, U. published the artcileRemoval of APIs and bacteria from hospital wastewater by MBR plus O3, O3 + H2O2, PAC or ClO2, Computed Properties of 117-96-4, the main research area is active pharmaceutical ingredient bacteria hospital wastewater; membrane bioreactor ozone hydrogen peroxide activated carbon chlorine dioxide.

The objective was to develop technologies that can reduce the content of active pharmaceutical ingredients (APIs) and bacteria from hospital wastewater. The results from the laboratory- and pilot-scale testings showed that efficient removal of the vast majority of APIs could be achieved by a membrane bioreactor (MBR) followed by ozone, ozone + H2O2 or powd. activated C (PAC). ClO2 was significantly less effective. MBR + PAC (450 mg/L) was the most efficient technol., while the most cost-efficient technol. was MBR + ozone (156 mg O3/L applied over 20 min). With MBR an efficient removal of E. coli and enterococci was measured, and no antibiotic resistant bacteria were detected in the effluent. With MBR + ozone and MBR + PAC also the measured effluent concentrations of APIs (e.g. ciprofloxacin, sulfamethoxazole and sulfamethizole) were below available predicted no-effect concentrations (PNEC) for the marine environment without dilution Iodinated contrast media were also reduced significantly (80-99% for iohexol, iopromide and ioversol and 40-99% for amidotrizoateacid). A full-scale MBR treatment plant with ozone at a hospital with 900 beds is estimated to require an investment cost of sym1.6 mill. and an operating cost of sym1/m3 of treated water.

Water Science and Technology published new progress about Adsorptive wastewater treatment. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Computed Properties of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Margot, Jonas published the artcileTreatment of micropollutants in municipal wastewater: Ozone or powdered activated carbon?, SDS of cas: 117-96-4, the main research area is municipal wastewater micropollutant removal ozonation activated carbon adsorption ecotoxicity; Effluent toxicity; Organic micropollutant; Ozone; Pharmaceutical; Powdered activated carbon; Wastewater treatment.

Many organic micropollutants present in wastewater, such as pharmaceuticals and pesticides, are poorly removed in conventional wastewater treatment plants (WWTPs). To reduce the release of these substances into the aquatic environment, advanced wastewater treatments are necessary. In this context, 2 large-scale pilot advanced treatments were tested in parallel >1 yr at the municipal WWTP of Lausanne, Switzerland. The treatments were (i) oxidation by ozone followed by sand filtration (SF) and (ii) powd. activated carbon (PAC) adsorption followed by either ultrafiltration (UF) or sand filtration. More than 70 potentially problematic substances (pharmaceuticals, pesticides, endocrine disruptors, drug metabolites, and other common chems.) were regularly measured at different stages of treatment. Addnl., several ecotoxicol. tests such as the Yeast Estrogen Screen, a combined algae bioassay, and a fish early life stage test were performed to evaluate effluent toxicity. Both treatments significantly improved the effluent quality. Micropollutants were removed on average >80% compared with raw wastewater, with an average ozone dose of 5.7 mg O3 L-1 or a PAC dose between 10-20 mg L-1. Depending on the chem. properties of the substances (presence of electron-rich moieties, charge, and hydrophobicity), either ozone or PAC performed better. Both advanced treatments led to a clear reduction in toxicity of the effluents, with PAC-UF performing slightly better overall. As both treatments had, on average, relatively similar efficiency, further criteria relevant to their implementation were considered, including local constraints (e.g., safety, sludge disposal, disinfection), operational feasibility, and cost. For sensitive receiving waters (drinking water resources or recreational waters), the PAC-UF treatment, despite its current higher cost, was considered to be the most suitable option, enabling good removal of most micropollutants and macropollutants without forming problematic byproducts, the strongest decrease in toxicity and a total disinfection of the effluent.

Science of the Total Environment published new progress about Adsorptive wastewater treatment. 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