Download Electronic Waste: Recycling Techniques by Hugo Marcelo Veit, Andréa Moura Bernardes PDF

By Hugo Marcelo Veit, Andréa Moura Bernardes

This ebook offers an summary of the characterization of digital waste. additionally, processing ideas for the restoration of metals, polymers and ceramics are defined. This publication serves as a resource of knowledge and as an instructional technical reference for practising scientists and engineers, in addition to for students.

Show description

Read or Download Electronic Waste: Recycling Techniques PDF

Similar environmental studies books

Introduction to Environmental Geology (4th Edition)

Because the human inhabitants raises, many choices referring to our use of ordinary assets will make certain our lifestyle and the standard of the environment. This reader-friendly publication is helping readers strengthen an knowing of the way geology interacts with significant environmental difficulties dealing with society.

The basics of oil spill cleanup

Reflecting the speedy development in cleanup know-how because the earlier version, this revised and increased 3rd version of the fundamentals of Oil Spill Cleanup covers present cleanup ideas, how oil spills are measured and detected, and the houses of the oil and its long term destiny within the setting.

Advances In Geosciences - Volume 1: Solid Earth

Advances in Geosciences is the results of a concerted attempt in bringing the most recent effects and making plans actions regarding earth and area technology in Asia and the overseas enviornment. the amount editors are all top scientists of their examine fields masking 5 sections: strong Earth (Se), sunlight Terrestrial (St), Planetary technological know-how (Ps), Hydrological technology (Hs), and Oceans and Atmospheres (Oa).

Interest Groups, Water Politics and Governance: The Case of the Lesotho Highlands Water Project

The publication investigates the function curiosity teams have performed through the years to persuade the governments of Lesotho and South Africa, the area financial institution and venture implementation professionals in altering a few coverage features of the Lesotho Highlands Water venture (LHWP). many of the concerns being agitated through the curiosity teams are the resettlement of villagers the place a number of the dams for the initiatives are being developed.

Extra resources for Electronic Waste: Recycling Techniques

Sample text

The riffles, decrease in height along their length so that, progressively, fine and heavy particles are brought into contact with the ­washing water film that passes over the riffles. The result of the asymmetrical movement towards the riffles and the differential speed of a perpendicular laminar flow is the scattering of material [15]. Other flowing film concentrators are the spiral ones. Spirals and static sluicetype gravity concentrators have been used since 1943 to restore and clean anthracite fine grain [21].

The processed ore is piled on waterproof pads. Leaching solutions are applied on the surface of the heap ore by sprinkler or drip irrigation, leaching the metals contained in the ore. Sulfuric acid and cyanide are typically used as leaching agents. This leaching process, which involves the percolation of leaching solutions through ore heaps, collects a solution enriched with metals by gravity in lined basins, sumps, and ponds for further processing and recovery of metals. The lixiviant solution is recovered and recycled in the process in a closed system [7].

It is one of the oldest forms of mineral processing, but its mechanisms are not yet fully understood. The main mechanisms in the process are: differential acceleration, 4 Mechanical Processing 23 sedimentation rates, differential speed in laminar flow, interstitial consolidation and the effect of shear forces [15]. Density separation is a physical process that is based on the difference between the rates of sedimentation or terminal velocity of particles, and its principle is the separation of the materials by different densities, sizes and shapes [14, 15].

Download PDF sample

Rated 4.92 of 5 – based on 20 votes