Nanografi Nanotechnology

An  antimicrobial  is an agent that kills microorganisms or inhibits their growth. There are several industry depends on antibacterial agents like  textile industry, water disinfection, medicine, and food packaging . Organic compounds used for  disinfection  have some disadvantages such as toxicity to the human body. Therefore, the interest in inorganic disinfectants such as metal oxide nanoparticles (NPs) is increasing. One of the most important inorganic disinfectant nanoparticles is  Silver (Ag).  Silver ions or salts are well known, but the effects of Ag nanoparticles on microorganisms has received considerable attention in the past few years in the field of microbiology and biotechnology. The antimicrobial activity of Ag nanoparticles was investigated against  yeast,  Escherichia coli , and  Staphylococcus aureus . First advantage of Ag is that it is a  bacterial growth inhibitor . Ag nanoparticles inhibit growth of these ...

Image Retriewed From: http://www.farmaceuticas.com.br/wp-content/uploads/2014/09/ecaw-biocida-agua.jpg Water purification  is a main process of removing undesirable materials, chemicals, biological contaminants, suspended solids and gases from contaminated water. The main aim is to produce water fit for a specific purpose. Most water is disinfected for human consumption ( drinking water ), but water purification may also be designed for a variety of other purposes, including fulfilling the requirements of medical, pharmacological, chemical and industrial applications. Substances that are removed during the process include parasites (such as Giardia or Cryptosporidium), bacteria, algae, viruses, fungi, minerals (including toxic metals such as Lead, Copper etc.), and man-made chemical pollutants. Many contaminants can be dangerous—but depending on the quality standards, others are removed to improve the water's smell, taste, and appearance. Actually there are sev...