Use of Nanoparticles in Water Purification
CONTENT
INTRODUCTION
WATER PURIFICATION BY NANOPARTICLES
NANOPARTICLES IN WASTE WATER TREATMENT
MATERIALS AND METHODS
CONCLUSION
REFERENCES
INTRODUCTION
WATER PURIFICATION: It is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water.
NEED: The goal of this process 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 meeting the requirements of medical, pharmacological, chemical and industrial applications.
METHODS USED:
Physical processes such as filtration (using nano-particles), sedimentation, and distillation.
Biological processes such as slow sand filters or biologically active carbon.
Chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.
The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as rain. According to a 2007 World Health Organization report, 1.1 billion people lack access to an improved drinking water supply, 88 percent of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation and hygiene, and 1.8 million people die from diarrheal diseases each year. The WHO estimates that 94 percent of these diarrheal cases are preventable through modifications to the environment, including access to safe water. Simple techniques for treating water at home, such as chlorination, filters, and solar disinfection, and storing it in safe
INTRODUCTION
WATER PURIFICATION BY NANOPARTICLES
NANOPARTICLES IN WASTE WATER TREATMENT
MATERIALS AND METHODS
CONCLUSION
REFERENCES
INTRODUCTION
WATER PURIFICATION: It is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water.
NEED: The goal of this process 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 meeting the requirements of medical, pharmacological, chemical and industrial applications.
METHODS USED:
Physical processes such as filtration (using nano-particles), sedimentation, and distillation.
Biological processes such as slow sand filters or biologically active carbon.
Chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.
The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as rain. According to a 2007 World Health Organization report, 1.1 billion people lack access to an improved drinking water supply, 88 percent of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation and hygiene, and 1.8 million people die from diarrheal diseases each year. The WHO estimates that 94 percent of these diarrheal cases are preventable through modifications to the environment, including access to safe water. Simple techniques for treating water at home, such as chlorination, filters, and solar disinfection, and storing it in safe