Tag: M.W=600-700

Xu, Jian published the artcileCatalytic degradation of diatrizoate by persulfate activation with peanut shell biochar-supported nano zero-valent iron in aqueous solution, Category: isoquinoline, the main research area is catalytic degradation diatrizoate persulfate peanut biochar iron aqueous solution; degradation; diatrizoate; nano zero-valent iron; peanut shell biochar; persulfate activated.

An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphol. of the nanocomposite materials were characterized by SEM, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform IR spectroscopy. The degradation of DTZ (20 mg L-1) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L-1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25°C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants.

International Journal of Environmental Research and Public Health published new progress about Adsorption. 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

Norra, Giannis-Florjan published the artcileRemoval of persistent organic contaminants from wastewater using a hybrid electrochemical-granular activated carbon (GAC) system, HPLC of Formula: 117-96-4, the main research area is granular activated carbon organic contaminant wastewater treatment.

A three-dimensional (3D) electrochem. flow-through reactor equipped with GAC packed bed, polarized by the elec. field, was evaluated for the removal of persistent organic contaminants from real sewage effluent. The performance of the reactor was investigated for 27 consecutive runs at two anodic current densities, i.e., low c.d. (LCD) of 15 A m-2, and high c.d. (HCD) of 100 A m-2. In the HCD experiments, the adsorption ability of saturated GAC was increased, mainly due to the increase in the mesoporosity of GAC. A synergy between electrosorption/adsorption on GAC and electrooxidation was observed in terms of the removal of all target pollutants. DEET presented the highest synergy, ranging from 40% to 57%, followed by iopromide (22-46%), carbamazepine (15-34%) and diatrizoate (4-30%). The addition of GAC decreased the concentrations of toxic chlorate and perchlorate by 2-fold and 10-fold, resp., due to their electrosorption on GAC. Also, 3D electrochem. system yielded lower concentrations of adsorbable organic iodide (AOI) and adsorbable organic chlorine (AOCl). Thus, addition of low amounts of GAC in electrochem. systems may be a low-cost and simple way of minimizing the formation and final effluent concentrations of toxic halogenated byproducts.

Journal of Hazardous Materials published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, HPLC of Formula: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Altmann, Johannes published the artcileCombination of granular activated carbon adsorption and deep-bed filtration as a single advanced wastewater treatment step for organic micropollutant and phosphorus removal, COA of Formula: C11H9I3N2O4, the main research area is granular activated carbon adsorption deep bed filtration wastewater treatment; carbon organic micropollutant phosphorus removal granular activated; Adsorption; Deep-bed filtration; Granular activated carbon (GAC); Organic micropollutants; Wastewater treatment.

Adsorption onto granular activated carbon (GAC) is an established technol. in water and advanced wastewater treatment for the removal of organic substances from the liquid phase. Besides adsorption, the removal of particulate matter by filtration and biodegradation of organic substances in GAC contactors has frequently been reported. The application of GAC as both adsorbent for organic micropollutant (OMP) removal and filter medium for solids retention in tertiary wastewater filtration represents an energy- and space saving option, but has rarely been considered because high dissolved organic carbon (DOC) and suspended solids concentrations in the influent of the GAC adsorber put a significant burden on this integrated treatment step and might result in frequent backwashing and unsatisfactory filtration efficiency. This pilot-scale study investigates the combination of GAC adsorption and deep-bed filtration with coagulation as a single advanced treatment step for simultaneous removal of OMPs and phosphorus from secondary effluent. GAC was assessed as upper filter layer in dual-media downflow filtration and as mono-media upflow filter with regard to filtration performance and OMP removal. Both filtration concepts effectively removed suspended solids and phosphorus, achieving effluent concentrations of 0.1 mg/L TP and 1 mg/L TSS, resp. Anal. of grain size distribution and head loss within the filter bed showed that considerable head loss occurred in the topmost filter layer in downflow filtration, indicating that most particles do not penetrate deeply into the filter bed. Upflow filtration exhibited substantially lower head loss and effective utilization of the whole filter bed. Well-adsorbing OMPs (e.g. benzotriazole, carbamazepine) were removed by >80% up to throughputs of 8000-10,000 bed volumes (BV), whereas weakly to medium adsorbing OMPs (e.g. primidone, sulfamethoxazole) showed removals <80% at <5,000 BV. In addition, breakthrough behavior was also determined for gabapentin, an anticonvulsant drug recently detected in drinking water resources for which suitable removal technologies are still largely unknown. Gabapentin showed poor adsorptive removal, resulting in rapid concentration increases. Whereas previous studies classified gabapentin as not readily biodegradable, sustained removal was observed after prolonged operation and points at biol. elimination of gabapentin within the GAC filter. The application of GAC as filter medium was compared to direct addition of powd. activated carbon (PAC) to deep-bed filtration as a direct process alternative. Both options yielded comparable OMP removals for most compounds at similar carbon usage rates, but GAC achieved considerably higher removals for biodegradable OMPs. Based on the results, the application of GAC in combination with coagulation/filtration represents a promising alternative to powd. activated carbon and ozone for advanced wastewater treatment. Water Research published new progress about Adsorption. 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

Mahouachi, Lamia published the artcileNatural clay as a sorbent to remove pharmaceutical micropollutants from wastewater, Safety of Diatrizoic Acid, the main research area is diatrizoic acid iopamidol metformin removal wastewater clay sorbentpharmaceutical micropollutant; Micro-pollutants; Montmorillonite; Natural adsorbent; Removal capacity; Water treatment.

Worldwide, the aquatic environment is contaminated by micro-pollutants, such as ingredients of personal care products, pesticides and pharmaceuticals. This contamination is one of the major environmental issues of global concern. Adsorption is one of approach, which has been most extensively discussed within recent years for the reduction of the input of micro-pollutants into the environment. In the present study, the natural clay classified as Na-montmorillonite, was characterized and tested for its potential to remove four model compounds representing different polarity and ionizability: (i) diatrizoic acid (DAT), (ii) iopamidol (IOP), (iii) metformin (MTF), and (iv) carbamazepine (CBZ). The adsorption efficiency of clay was evaluated by initial compound concentration, effect of pH, contact time and temperature The results indicated that clay was able to remove the pharmaceuticals from aqueous medium with an efficiency of 70% for CBZ and MTF. In contrast, clay showed a lower removal of 30% for DAT and no removal for IOP. The results indicate that clay could rapidly and efficiently reduce the concentration of CBZ and MTF, which could provide a solution to remove some substances, without undesirable byproduct generation. However, this study clearly demonstrated that removal rates strongly depend on the compound Albeit chem. structure may play a role for the different degree of removal, this study could not completely explain the sorption mechanism between sorbent-sorbate interactions.

Chemosphere published new progress about Adsorption. 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

Dakhale, Vishal D. published the artcilePreparation and evaluations of diatrizoate sodium liquid oral formulation, Recommanded Product: Diatrizoic Acid, the main research area is diatrizoate sodium liquid oral drug delivery system formulation.

X-ray diagnostic agents (contrast media) are widely used as adjuncts to diagnostic visualization techniques as they help to illustrate the differences between tissues by introducing them to the area of interest to increase its d. and absorption of X-rays. Diatrizoic acid is radio opaque ionic contrast media utilized orally and parentrally for symptomatic purpose. The goal of this investigation is to develop a liquid oral contrast media and evaluate the physicochem. parameter were compared with the changes in accelerated stability testing for the documentation of these plan nearby with FTIR information. Quality of final solution was evaluated with the parameters: pH, iodine iodide test and drug content. Three batches were formulated of the solution All the batches were evaluated for physicochem. parameters, pH and drug content. The formulated batches under gone stability studies, no turbidity were observed for 60 days studies. All the batches assure the reproducibility and each parameter were complying with specifications.

European Journal of Biomedical and Pharmaceutical Sciences published new progress about Absorption. 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

Boehringer, Bertram published the artcilePolymer-based Spherical Activated Carbons: From Adsorptive Properties to Filter Performance, Quality Control of 117-96-4, the main research area is carbonized spherical polymer activated carbon adsorbent manufacture; porosity adsorption carbonized polymer steam carbon dioxide activation; air purification adsorption carbonized polymer activated carbon; water purification adsorption carbonized polymer activated carbon.

Polymer-based spherical activated carbon (PBSAC), produced by means of carbonization and subsequent activation of a polymeric precursor in a batch process represent adsorbents with adjustable pore size distribution and adsorption characteristics. This flexibility results from batch operation and from the possibility to combine different activation media, therefore controlling the mechanisms of pore generation. The geometry and the mech. properties of PBSAC allow for structuring of filter media e.g., for adsorbent enlargement or fixation. Other intrinsic product properties such as roundness, high crush strength and high abrasion resistance of PBSAC offer advantages in various adsorption applications.

Chemie Ingenieur Technik published new progress about Adsorbents. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Quality Control of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Back, Jan O. published the artcileAdsorptive removal of micropollutants from wastewater with floating-fixed-bed gasification char, Recommanded Product: Diatrizoic Acid, the main research area is micro pollutant adsorptive removal floating ixedbed gasification char.

The global detection of organic micropollutants (OMPs) in waterbodies and the search for low-cost alternatives to fossil activated carbon have fostered research on the application of modified biochars in complex wastewater treatment plant (WWTP) effluents. Gasification char – a promising prospect for adsorptive OMP removal – was obtained as byproduct in a novel, multi-staged gasification process. The gasification system was designed for medium-scale energy production (530 kW combined heat and elec. power output) from spruce woodchips and relies on a floating-fixed-bed gasifier with a preceding pyrolysis step. For both tested adsorbents, high removal rates >90% of OMPs with high logD were found at an equivalent dosing of 60 mg l-1 FFBC ≈ 10 mg l-1 PAC, whereas X-ray contrast agents exhibited lower affinity. The governing removal mechanisms are hydrophobic and π-interactions, pore-size effects and – to a limited extent – hydrogen bond formation. Dissolved organic matter in WWTP effluent inhibits OMP adsorption, as observed in decreasing isotherm fitting parameters. The investigated bio-adsorbent – derived from renewable energy, regional supplies, and a process lean in the use of chems. – could be an inexpensive alternative in adsorptive wastewater treatment.

Journal of Environmental Chemical Engineering published new progress about Adsorbents. 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

Cheng, Xinying published the artcileA comparative study on adsorption behavior of iodinated X-ray contrast media iohexol and amidotrizoic acid by magnetic-activated carbon, Related Products of isoquinoline, the main research area is iohexol amidotrizoic acid carbon Xray adsorption wastewater treatment; Adsorption mechanism; Amidotrizoic acid; Co-adsorption; Density functional theory; Iohexol; Magnetic activated carbon.

Abstract : As persistent and ubiquitous contaminants in water, iodinated X-ray contrast media (ICM) pose a non-negligible risk to the environment and human health. In this study, we investigated the adsorption behavior of two typical ICM compounds, iohexol (IOH) and amidotrizoic acid (DTZ), on magnetic activated carbon. Theor. investigations, using d. functional theory, identified the mol. structures and calculated the mol. diameters of IOH (1.68 nm) and DTZ (1.16 nm), which revealed that ICM could be adsorbed by mesopores and larger micropores. Therefore, magnetic activated carbon with a porous structure was prepared by the co-precipitation method to investigate the adsorption mechanism of IOH and DTZ. MAC-5 (magnetic activated carbon with a theor. iron oxide content of 37%) showed the best adsorption ability for both IOH and DTZ, with maximum adsorption capacities of 86.05 and 43.00 mg g-1, resp. Adsorption kinetics and isotherm models were applied to explore the mechanisms involved, and the effects of solution pH, initial concentration, temperature, ionic strength, and natural organic matter were also investigated. The pore filling effect, π-π stacking, hydrogen bonding, and electrostatic interaction, were found to be the main adsorption mechanisms. The co-adsorption data showed that competition may occur in ICM coexisting environments. Interestingly, the used MAC-5 could be successfully regenerated and its adsorption efficiency did not decrease significantly after five cycles, indicating that it is a promising adsorbent for ICM. The results from this study provide some new insights for the treatment of water containing ICM.

Environmental Science and Pollution Research published new progress about Adsorbents. 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

Vergeynst, Leendert published the artcileSuspect screening and target quantification of multi-class pharmaceuticals in surface water based on large-volume injection liquid chromatography and time-of-flight mass spectrometry, Recommanded Product: Diatrizoic Acid, the main research area is screening method pharmaceutical determination surface water; large volume injection liquid chromatog mass spectrometry.

The ever-growing number of emerging micro-pollutants, e.g., pharmaceuticals, require rapid, sensitive full-spectrum anal. techniques. Time-of-flight high resolution mass spectrometry (TOF-HRMS) is a promising alternative for state-of-the-art tandem mass spectrometry instruments due to its ability to simultaneously screen for a virtually unlimited number of suspect analytes and perform target quantification. The challenge for such suspect screening is to develop a strategy which minimizes the false-neg. rate without restraining numerous false-positives. At the same time, omitting laborious sample enrichment through large volume injection, ultra-performance liquid chromatog. (LVI-UPLC) avoids selective pre-concentration A suspect screening strategy was developed using LVI-UPLC/TOF-MS to detect 69 multi-class pharmaceuticals in surface water without the a-priori availability of anal. standards As a novel approach, the screening accounts for signal-intensity-dependent accurate mass error of TOF-MS, restraining 95% of measured suspect pharmaceuticals in surface water. It use on 5 Belgian river water samples showed the potential of the suspect screening approach, exemplified by a false-pos. rate <15% and given that 30 of 37 restrained suspect compounds were confirmed by anal. standard retention time. The paper discusses validation and applicability of the LVI-UPLC full-spectrum HRMS method to quantify the 69 pharmaceutical target compounds in surface water. Anal. of 5 Belgian river water samples showed the occurrence of 17 pharmaceuticals at concentrations of 17 ng/L to 3.1 μg/L. Analytical and Bioanalytical Chemistry published new progress about Calibration. 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

Meng, Lingjun published the artcileA novel method for photo-oxidative degradation of diatrizoate in water via electromagnetic induction electrodeless lamp, Application In Synthesis of 117-96-4, the main research area is photooxidation diatrizoate electromagnetic induction electrodeless lamp; Diatrizoate; Electromagnetic induction electrodeless lamp; Quantum chemical calculations; Radicals; UV-based advanced oxidation.

In this study, an electromagnetic induction electrodeless lamp (EIEL) was first introduced into UV advanced oxidation processes (AOPs) for photodegradation of Diatrizoate (DTZ), which was the most persistent iodinated X-ray contrast medium (ICM), and traditional Hg lamps were taken as references Direct photolysis rate of DTZ under EIEL irradiation was 1.34 times as that under Hg irradiation, but the elec. energy consumption was 0.87 times. In this sense, the combination of EIEL and oxidants (O2, H2O2 and S2O82-(PS)) was further investigated. The remarkably increased photodegradation rates were observed in UV/PS system due to primary contribution rate of SO4·- (62.5%) based on the results of radical concentrations and second-order rate constants of DTZ with SO4·- and ·OH. Inorganic ions influencing the photodegradation process were investigated. The effect of natural organic materials (NOMs) in UV/PS system was studied based on contribution ratios of light screening effect and quenching. Transformation mechanisms of DTZ in UV/PS system included deiodination, intramol. cyclization, decarboxylation, deacetylation and deamination, which were further confirmed by frontier electron d. calculations The study indicated that UV/PS with EIEL irradiation has the potential to remove pharmaceuticals in contaminated aquatic environments.

Journal of Hazardous Materials published new progress about Chlorophyta. 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