Essays on Sulfide

Introduction

The cost of manufacturing ammonia using the Haber process plant constitutes the following components: the cost of energy, raw materials, equipment, labor and sparking substances (catalysts). Energy (gas or electricity) costs are incurred to maintain the temperature of the reaction. The Harber process is operated at very high temperatures, and pressures thus higher costs of energy are incurred. Some of the raw materials consumed in the Haber process such as nitrogen and hydrogen are recovered at the end of the process. The recovered materials are recycled back to the system to reduce the cost of raw materials. Starting and ...

Strategic Analysis Alacer Gold Corp and Gold and Mining Industry

Introduction Gold is a precious metal with high ductility and malleability, and it finds application as jewelry and investment. It is considered to be one of the safest bet for investment, especially during economic instabilities. Consequently, rapid political instabilities in the Middle East and financial crisis led to rapid increase in the price of gold worldwide. Technological innovation is also a major factor that affects the gold and mining industry. Therefore, the strategic analysis narrows on the gold industry, with a specific focus on Alacer Gold Corporation. It looks at the trends in the industry and how Alacer Gold ...

1.0 Tectonic Setting of South China Hong Kong, which is located near the southeastern margin of the Eurasian Continental Plate (ECP), called the Cathaysia Block, in Southeast China, rests on a stable intraplate region of the ECP some 700 km from its nearest plate boundary, an area that underlies Taiwan and trends southward to the Philippines and northeastward to Japan (Pappin, Koo, Free, & Tsang, 2008). Although stable, this continental intraplate region has been associated with earthquakes in the past as it straddles the northeast-trending Lianhuashan Fault Zone. There are two major fault zones, which trends in the regional northeast ...

Extraction Stage

Extraction of copper produces both specks of dust and gaseous wastes such as sulfur dioxide and carbon dioxide that significantly contribute to environmental pollutions, especially air pollution (“Copper Mining”). Whereas copper wire miners reduce this pollution level by trapping the generated sulfur dioxide gas for purposes of producing sulfuric acid, considerable amounts of sulfur dioxide still escape and take part in both air and water pollution. However, extraction methods that incorporate emulsion of liquid membranes and applications of microorganisms in removing copper from their underground ores have been currently established as the economical and viable ways of gathering copper. ...

In the case of López Ostra v. Spain (Council of Europe), Lopez lodged an application seeking protection of fundamental rights. Lopez had tried to engage the municipal authority in search of a solution to the nuisance and risks posed by the waste-treatment plant. However, the municipal authorities maintained a passive attitude. This prompted Lopez to seek the intervention of the court. In her application, Lopez complained that the industries operating within the vicinity of her residence were not only unlawfully interfering with her home but also her ability to enjoy peace of it. To her, this constituted a ...

Introduction

H2S or hydrogen sulfide is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. Hydrogen sulfide is also known as sewer gas, swamp gas, manure gas, or stink damp. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas, and kraft paper mills (Occupational Safety and Health Administration). Aside from being a gas in form, hydrogen ...

Introduction

Renewable energy is energy obtained from resources that are replenished rapidly by natural processes (Kalogirou, 2013). These natural processes wind, sunshine, tides and waves, rain, geothermal power, and biological processes.

Environmental Impacts of Renewable Energy Sources

All energy sources including renewable energy sources have an effect on the environment. Wind turbines change air pressure and cause death of birds and bats from the collision with the turbines. Hazardous materials like hydrochloric and sulfuric acid are used in manufacturing and cleaning of photovoltaic cells used in solar panels. Open-loop geothermal power systems emit and release hydrogen sulfide, carbon dioxide, and methane into the atmosphere. Hydrogen sulfide ...

Introduction:

Corrosion refers to the partial and gradual dissolution of materials used in water treatment and supply systems, pumps, pipes, tanks and valves. In most circumstances, almost all water is corrosive and this may lead to structural failure, water leaks, capacity losses and deterioration of the microbial and chemical water quality (WHO 2011). The pipes used in water distribution are made of different materials such as plastic, metals (galvanized steel, copper, lead and iron), and even concrete. Pipes made from concrete and plastic tend to be corrosion resistant. In piping systems, however, there are several water quality factors working singly ...