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Crustal abundance
The crust is the outermost layer of the solid Earth and composed of two major types of rocks: the oceanic crust and the continental crust. The abundance of crustal rocks varies with location and depth, but can be measured in parts per million (ppm) or billion (ppb). The continental crust contains ......
1057 
Oliver
chemical selection
Introduction
In the field of chemistry, the opportunities for chemical selections are abundant. Chemicals serve a variety of purposes, from detergents to medicinal agents, and new discoveries are constantly being made. With this in mind, a chemist must be aware of the various chemical selections ......
China Petroleum Industry
China National Petroleum Corporation (CNPC) is the countrys largest oil and gas producer, distributor and trading company. As a public enterprise supervised by the central government, it has more than 200 subordinate and affiliated companies located across China and around the world.
CNPCs main b......
Iron ore pretreatment
Iron ore pre-treatment
Iron ore is a naturally occurring mineral consisting of various compounds, usually containing iron and varying amounts of other elements, from which metallic iron can be reduced in the form of pig iron or direct reduced iron (DRI) for use in a variety of steelmaking proces......
Arsenic Wastewater Treatment Design
Processing Wastewater Containing Arsenic
Introduction
Arsenic is a toxic chemical element that exists in water either from natural sources such as rocks and soil or from human activities such as mining and industry. When the concentration of arsenic surpassed the limits set by public health orga......
Strip foundation
DNA Barcoding
DNA Barcoding is a method of species identification that uses a short nucleic acid sequence from a gene region that is standardized for all species. It is an effective, accurate, and affordable way to precisely identify a species from any biological sample.
DNA Barcoding works by c......
Water treatment equipment testing instrument system
Water Treatment Equipment Detection Instrument System
Water is one of the most important and vital substances for life. It is essential for almost all biological processes, including drinking, irrigation, food production, transportation and industrial activities. Clean water is essential for a ......
Water Treatment Station Design
Design of Water Treatment Station
Introduction
As water resources become increasingly scarce, it is necessary to ensure that the water we drink is of a high-quality standard. But this is becoming increasingly difficult as human activities introduce pollutants into the water. This has made water ......
Heavy metal wastewater treatment design
Design of Heavy Metal Wastewater Treatment
Introduction
In today’s world, water is a precious resource which is quickly diminishing. It is essential to conserve and protect water resources and to treat wastewater appropriately before returning it back to the environment. Treating wastewater is ......
Fluoride Wastewater Treatment Design
Fluoride Wastewater Treatment Design
Fluoride is a form of naturally occurring element in the earths crust. It can cause adverse health effects in humans when ingested in high amounts. Fluoride is found in many natural sources, as well as in many industrial and agricultural operations such as min......
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