Foolad Technic International Engineering Company

 From the beginning of the 21st century human society encountered with global environmental problems. It would be necessary that the industries find effective solutions for such problems. One of these problems is emission of greenhouse gases which cause to global warming. The cement plants are the most important reason of emitting greenhouse gases and carbon dioxide in the world. Cement industries lonely produce 5 percent of Carbon dioxide in the world which its portion is more than the whole world air transportation industries.

Biogas as a source of renewable energy can be produced from variety of organic materials such as agricultural residue, animal manure, municipal wastewater, etc. Anaerobic digestion of organic material is decomposing of organic content in the absence of oxygen. In this procedure organic material is decomposed by bacteria to variety of end product in which the main gasses are Methane and Carbon dioxide.

In the twenty-first century, energy producers must meet environmental targets, leading to shift away from fossil fuels towards renewable source of energy. As a result, biomass is becoming an increasingly attractive option to energy providers. Biomass is a clear, cost effective and simple method which is estimated to produce more than 50 percent of the world's energy in the next century.

The simultaneous determination of heavy metals associated with airborne particulate matter in the atmosphere of the city Isfahan (Iran) was performed by inductively coupled plasma atomic emission spectrometry (ICP-AES) after pre-concentration with sodium diethyldithiocarbamate. The preconcentration procedure developed found instrumental to determine the trace heavy metals associated with ambient aerosols collected at a short sampling period or collected from rural areas where the concentrations of these metals are much less than those in urban areas.