Defluoridation of Water using Boiler Bottom Ash as an Adsorbent

[kolkata321]

Hi All,

I am a Civil Engineer by profession with 10 years of working experience in Water and Wastewater related field in various countries, such as India, Mongolia and UK. I have a Bachelor Degree in Civil Engineering and further gained Master of Civil Engineering with a specialisation in Environment Engineering. At present, I am preparing for my professional review to gain Chartered Engineer status and this post is related to the above.

During my post graduate study in the University I conducted literature review and authored a report on the effect of excessive fluoride intake in human body and situation of fluoride endemic in India. I further completed a dissertation project on fluoride removal from ground water using low cost Boiler Bottom Ash as an adsorbent compared to chemical agents which generates high quantity of sludge. It's been a while since I left my university as a result I have forgotten almost everything about my dissertation project. Since I left my university in 2002, I never practised water chemistry in my professional field and hence things are out of my memory.

I would expect questions on the use of Boiler Bottom Ash for fluoride removal. Now, I would request all the members to ask me questions after reading the above paragraph about boiler bottom ash and defluoridation techniques(as if you are the reviewer in the interview). I want to be prepared for any question that may arise during the interview.

Thanks in advance for your co-operation.

Regards

Samrat

 

[bimr]

The use of bottom ash to remove fluoride is definitely an out of the box solution.

However, would not the use use of bottom ash create an even greater problem with potable water? Bottom ash has a high salt content and low pH and is generally corrosive. Bottom ash also contains concentrations of cadmium (Cd), chromium (Cr), selenium (Se), and silver (Ag) that could potentially be worse contaminants than fluoride. Probably an indefensible position in an interview.