Chemical industry

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 alumina refining industry is one of a number of global industries that produce process waters containing mercury. The research program detailed in this dissertation focuses on processes for removing mercury from Bayer digestion condensate streams. Bayer refinery digestion condensate is chemically unique because it exhibits high pH and is chemically reducing, thermodynamically favouring the presence of elemental mercury.

192p runthenight05 01-03-2023 5 3   Download

The Quaternary Zarloukh Bentonite –Tuff (ZBT) deposit occurs within the Hemrin South Mountain, northern Iraq. The ZBT deposit occurs as depression-filling exposed on the erosional surface of the siliciclastic Pliocene Muqdadiya Formation and covered by an overburden of recent sediments. The thickness of the studied industrial bentonite bed is ~80−100 cm, occurring at the bottom of these depressions, covered by ~3−4 m thick bedded volcanic tuff, which also contains many 10–12 cm thick bentonite layers along its bedding planes.

17p tanmocphong 29-01-2022 9 0   Download

Microclimate is the physical state of the atmosphere in the narrow space of the workplace including the factors temperature, humidity, radiant heat and speed of air transport. These factors must be guaranteed in certain limit, consistent with human physiology.

32p redemption 29-12-2021 4 0   Download

This review paper summarizes the best method for the utilization of agricultural wastes as raw material for the production of bioethanol. Agricultural wastes are rich in sugar and complex carbohydrates that makes it suitable source to carry out the fermentation process. Bioethanol is widely used in industries such as, chemical, pharmaceutical and food for various purposes especially as sterilizer.

7p mudbound 10-12-2021 19 2   Download

Lecture Industrial safety and environmental hygiene - Chapter 2: Industrial Hygiene present the content Occupational/Industrial Hygiene, four steps to create healthy working place, factors affecting to industrial hygiene,...

32p xusong 05-07-2021 8 3   Download

The objectives of the thesis: The objectives of this study are to investigate the main chemical compositions of Euphorbia hirta L. to search for chemical constituents in relation to biological activities, contributing to further studies to create products for application in the aquarculture industry in particular and for life in general.

31p extraenglish 24-05-2021 30 3   Download

The objectives of this study are to investigate the main chemical compositions of Euphorbia hirta L. to search for chemical constituents in relation to biological activities, contributing to further studies to create products for application in the aquarculture industry in particular and for life in general.

31p capheviahe27 23-02-2021 26 3   Download

The NMR spectra of 15 novel quinolines containing 11 - 34 carbon atoms and bearing substituents such as hydroxyl, sunfo, chloro, bromo, amino, azo and carboxymetoxy groups were recorded in DMSO at 298 - 300 K. For seven quinolines, the 13C-NMR signals were assigned on the basis of an analyzation of the cross peaks in the HSQC and HMBC spectra.

6p tamynhan8 04-11-2020 10 1   Download

The paper deals with the use of the "memory effect" of a groundwater aquifer for the retrospective estimation of the sources of groundwater industrial pollution, and in order to obtain a reliable estimate of their impact on groundwater and surface water.

23p lucastanguyen 01-06-2020 24 3   Download

This paper evaluates the inventory management policies of four major petro chemical industries in India. The companies were selected on the basis of turnover. The financial statements of the companies for 5 years from 2012-2016 were considered for the study.

7p guineverehuynh 22-06-2020 11 1   Download

Many industries, such as nuclear power plants, chemical industry, oil and gas industry have dangerous working environments and hazardous conditions for employees. Maintenance, inspection and decommissioning activities in these safety-critical areas mean a serious risk, downtime is a significant financial loss.

5p christabelhuynh 29-05-2020 9 0   Download

As the urban area has high population density and intensive anthropogenic activities, there are a great number of sources of heavy metals in cities, placing a considerable influence on human health. Emissions of heavy metals may come from domestic waste, chemical industry and transportation. These emissions have been continuously adding heavy metals to soils and they will remain present for many years even after the pollution sources have been removed.

7p nguaconbaynhay5 16-05-2020 22 0   Download

Salicylaldehyde has many applications as an intermediate in chemical industries. Genus Filipendula is a potential source of salicycldehyde. Essential oils are prescribed for a variety of health problems by traditional systems of medicine, all over the world. In present study, leaf essential oil composition of Filipendula vestita (Wall. Ex G. Don) Maxim. (Family: Rosaceae) from Uttrakhand, India was analyzed using gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS) methods.

5p abcxyz123_02 03-03-2020 21 1   Download

Corrosion can be controlled by isolation of the metal from the corrosive environment. Isolation of corrodible metals from corrosive environments is probably the most general method of the corrosion protection afforded by paint films, sealers and lining on base materials. Fluoropolymers provide superior chemical resistance and are used in a variety of markets.

10p vihongkong2711 06-02-2020 12 2   Download

The reactions form chains and rings of alumino-silicate networks in geopolymeric structures. The raw materials used for geopolymerization normally contain high SiO2 and Al2O3 in the chemical compositions such as meta-kaoline, rice husk ash, fly ash, bottom ash, blast furnace slag, red mud, and others. The geopolymer-based material has potentials to replace Ordinary Portland Cement (OPC)-based materials in the future because of its lower energy consumption, minimal CO2 emissions and lower production cost as it utilizes industrial waste resources.

8p quaymax4 05-09-2018 28 0   Download

Taiwanese outward FDI into Vietnam focused mostly on labor-intensive sectors such as manufacturing of metals, chemicals and textiles. Taiwanese FDI contributed 2.2-2.3% of Vietnam’s total social investment; created 1.2 million jobs and helped improve the industrial structure. However, Taiwanese FDI is also characterized by low and medium level technology; sharp increase in “dirty industries” classified by Mani and Wheeler (1997) and social problems related to local labor.

10p truongtien_08 06-04-2018 39 5   Download

Tài liệu The language of Chemistry, Food and Biological Technology in English (ngôn ngữ tiếng anh chuyên ngành công nghệ hóa học, công nghệ thực phẩm và công nghệ sinh học) - GS.TS. Nguyễn Thị Hiền (chủ biên) có cấu trúc gồm 4 part. Phần 1 của Tài liệu trình bày những nội dung sau: The basic units, Chemistry and Its Branches, Classification of Matter, Isolation and Purification of Substances, The Rate of Chemical Reactions, Equipments of Chemical Laboratory, Relationship of Chemical Industry to Other Industries, The Laboratory Not Tài liệu, Study Outline of Chemistry.

89p cobetocxul9 21-05-2015 145 25   Download

Chemical reaction engineering (reaction engineering or reactor engineering) is a specialty in chemical engineering or industrial chemistry dealing with chemical reactors. Frequently the term relates specifically to catalytic reaction systems where either a homogeneous or heterogeneous catalyst is present in the reactor.

146p 61204392 22-10-2014 80 15   Download

In petroleum industry, it is desirable to produce lighter hydrocarbons such as gasoline, kerosene and gas–oil from unused heavy oils. Thus we have developed zirconia-supporting iron oxide catalysts View the MathML source to decompose petroleum residual oil (atmospheric distilled residual oil) with steam.

6p tuananhhumg 04-11-2013 58 3   Download