Drinking water de-fluoridation utilizing bone char.
Explain your project in details:
Water is essential in our everyday life, used in almost every domestic activity, from cooking to washing or for sanitation. Water availability is neither adequate nor equitable for all human beings. In addition to the problem of limited availability of water, there is also the problem of water quality. For instance, the biological and chemical contamination of water is a matter of grave concern. One such chemical contaminant present in the water is fluoride. Exposure to fluoride can give rise to several adverse effects. These range from mild dental fluorosis to crippling skeletal fluorosis as the level and period of exposure increases. Taking health effects into consideration, the World Health Organization (1996) has set a guideline value of 1.5 mg/1 as the maximum permissible level of fluoride in drinking waters. In contact with water bone charcoal is able, to a limited extent, to absorb a wide range of pollutants such as colour, taste and odor components. Moreover, bone charcoal has the specific ability to take up fluoride from water. Where one or both the hydroxyl-groups can be replaced with fluoride.From initial assessment bone char has proved to be appropriate under all social, financial, economic, environmental and technical conditions. I designed a working prototype for fluoride de-fluoridation utilizing bone char. I'm looking for funding to further develop the concept and implement it in rural communities which rely on ground water consumption for their drinking water. The advantage of this technology is that,the bone char can be regenerated after saturation, hence economical, also raw material such as bones are readily available in the communities.
Impact of your enterprise on sustainable development
The most common manifestation of over consumption of fluoride is by dental fluorosis. This is characterized by browning and mottling of teeth. It is visible by white, yellow, and brown streaks on the teeth, characteristic of the hypoplasia and hypo calcification. This damage is more than cosmetic, as it tends to be associated with painful cavity like feelings. Additionally, there are social stigmas against those suffering from fluorosis. The use of innovative technique, which employs bone char for de-fluoridation of drinking water. The innovation in regeneration of bone char makes the technique cost effective. In addition, equipment will be easy to operate with minimal technical knowledge. Mitigation of fluorosis among inhabitants of remote communities which consume underground water contaminated with high levels of fluoride. The utilization of bone char in de-fluoridation of drinking water in this communities is economic because there is no daily addition of chemicals hence, no sludge disposal into the environment compared to other de-fluoridation method. The water de-fluoridation process utilizing bone char has shown to remove fluoride ions at cheap cost ( USD $0.40 per cubic metre of water) compared to other technologies such as membrane filtration, etc.
Sustainability and future plans
Developing a system that is sustainable to rural communities is of paramount importance. The cost of the treated water must be economical to low income earners and the poor. Also the process must be able to sustain it self to keep on running providing safe water to communities without government funding in the long run.
Your profile as an entrepreneur
My name is Tonderai Kadengwa, a technoprenuer and innovator. A highly motivated chemical engineer who has the drive and passion to change the world. I am 24 years of age and holder in Bachelor of Technology in Chemical & Process Systems Engineering degree.