Organic compounds

The objective of this study was to determine the impact of the extraction conditions on the extraction yield of bioactive compounds from grape pomace using choline chloride and organic acid-based deep eutectic solvents (DES).

9p viling 11-10-2024 0 0   Download

This study determined the heavy metals enrichments and their possible sources in industrial sludges from different sampling time. The results show that industrial sludge exhibits very high pollution for some typical heavy metals, especially Cu and Cd.

10p viyoko 01-10-2024 1 0   Download

The present study is focused on the production of electricity using double chambered microbial fuel cells (MFCs) to treat hospital wastewater treatment combined with poly (vinyl alcohol) (PVA) membrane cross-linked with glutaraldehyde (GA) with low cost.

10p viyoko 01-10-2024 4 1   Download

In this research, the nanosized Fe2V4O13 complex oxide material was synthesized by the hydrothermal method. Its structure, morphology characterization, and other properties were determined using X-ray, SEM, EDX, and DTA-TG methods.

5p vikwong 29-09-2024 2 1   Download

Manufactured dyes are notably troublesome chemical toxins. The industrial wastes of these dyes are exceedingly noxious to aerobic and aquatic life and can cause compounds that show carcinogenic, mutagenic, and neurotoxic effects. In this study, cadmium imidazolate frameworks were synthesized by a solvothermal method from cadmium acetate and 2-methylimidazole in an ethanol/methanol mixture.

7p vikwong 29-09-2024 3 1   Download

The pH solution is one of the critical factors affecting the photo-Fenton degradation of dyes in wastewater. This study has shown the role and potential of the application of photocatalysts in the degradation of toxic organic compounds the wastewater.

5p vikwong 29-09-2024 3 1   Download

Volatile organic compounds (VOCs) are one of the environmental pollutants of concern because they contribute to polluted environmental phenomena such as photochemical smog and secondary particulate matter. The current research focuses on preparing the manganese oxide catalyst by many different methods and evaluating their activity in the toluene oxidation reaction.

6p vikwong 29-09-2024 2 1   Download

The volatile organic compounds (VOCs) sensing layers were studied using ZnO nanomaterials with different morphologies including hierarchical nanostructure (ZnO-H), nanorods (ZnO-NRs), commercial nanoparticles (ZnOCNPs) and wet chemical synthesized nanoparticles (ZnO-HNPs). ZnO hierarchical structure was fabricated by an electrospinning technique followed by hydrothermal process.

6p vikwong 29-09-2024 2 1   Download

It can be seen that the objects of wastewater that need to be treated are quite diverse in types and complex in terms of reaction mechanisms. The methods mainly focus on the treatment of toxic organic compounds, especially phenols or plant protection agents in industrial wastewater, paper industry, food production, textile industry, printing industry.

6p vikwong 29-09-2024 4 0   Download

Toluene is a component of volatile organic compounds which need to be converted into non-poisonous one. Thus, we study the spinel-typed catalyst as NiCo2O4 for total oxidation of toluene because the advantage of spinel catalyst is multi- defective.

6p vikwong 29-09-2024 3 1   Download

Unsaturated polyester resin (UPR) condensate water contains biodegradable organic compounds, including those that create unpleasant odor. Those odors can adversely impact the environment, human health, and, most of all, the uncomfortably.

7p vikwong 29-09-2024 3 1   Download

The high durability, re-collectable and low-cost materials with tertiary (reduced graphene-TiO2-Fe3O4, denoted as GrTiFe) components for degradation of toxic organic compounds have been prepared from different precursors by coprecipitation and hydrothermal methods.

5p vikwong 29-09-2024 2 1   Download

This work investigated the modification of MnOx catalysts by doping various metals (e.g., Cu) and supporting them on cordierite honeycomb ceramics using the impregnation method. The catalysts were characterized by BET, XRD, SEM-EDX, and H2-TPR techniques. The Cu1Mn2Ox catalyst exhibited the best catalytic performance, achieving complete oxidation of benzene and toluene at 275°C with a WHSV of 18,000 mL/(g·h).

6p vikwong 29-09-2024 3 1   Download

Cajuput oil is a traditional and famous product of Thua Thien Hue, it is considered as a potential product, contributing to the economic development of Thua Thien Hue. The aim of the present study was to apply GC to the determination of the main components of commercial cajuput oils from M. cajuputi species in the Thua Thien Hue province.

4p vifaye 20-09-2024 1 1   Download

The Department of Organic Chemistry, the Department of Inorganic and Applied Chemistry, and the Department of Chemistry are among the six departments, six majors, and three research laboratories that make up the Faculty of Chemistry today, some 70 years after its founding. Physical chemistry, analytical chemistry, polymer chemistry, medicinal chemistry, and three key-research labs, including the labs for natural compounds, cancer, and computational chemistry.

6p dianmotminh02 03-05-2024 7 1   Download

The objectives of this research work are: Study the clay intercalation by organic dye and develop a process to produce nanoclay-dye pigment with better stability and good performance; Conduct structural characterization to verify the level of intercalation and stability of clay-dye pigment by using X-Ray diffraction (XRD) and Transmission Electron Microscopy (TEM); Investigate the thermal stability of clay dye pigment using Thermo Gravimetric Analysis (TGA) to reveal the effect of dye intercalation into the clay on improving thermal stability of organic dye; Compound the clay- pigment with ...

141p runthenight07 01-03-2023 5 3   Download

Municipal wastewater treatment plants generally utilise biological activated sludge processes to remove organic compounds and nitrogen. The biological nitrogen removal (BNR) occurs in two steps, nitrification (ammonium removal) and denitrification (nitrates removal). This study focused on a medium-sized wastewater treatment plant (WTP) which experienced poor nitrification for years, mainly when the weather temperature drops.

125p runthenight07 01-03-2023 7 3   Download

In this work, it was possible to observe the different profiles for the Pilsen, Witbier and IPA style beers, when quantifying the analytes methanol, ethanol, n-propanol, iso-butanol, 3-methyl1-butanol (iso-amyl alcohol), acetaldehyde, ethyl acetate and iso-amyl acetate. Pilsen beer, with low fermentation, presented the ethanol content in the same concentration range as Witbier beer, as expected, but with higher alcohols and lower esters than the other two.

4p mudbound 10-12-2021 13 0   Download

The objectives of the thesis: Isolation and determination of chemical structures of the isolated compounds from the leaves of Excoecaria agallocha L. and Excoecaria cochinchinensis Lour.; studied the cytotoxic, anti-inflammatory, and antimicrobial activities of the isolated compounds to find the bioactive compounds.

27p closefriend09 16-11-2021 29 3   Download

Study on main chemical constituents of two Gymnema species including Gymnema sylvestre and Gymnema latifolium growing in Vietnam and evaluate the inhibitory effect of α-glucosidase and α-amylase enzymes of isolated compounds.

27p closefriend09 16-11-2021 19 4   Download