Topics :

1. domestic wastewater recycle (2006 ~ )

   Activated sludge method is the most widely used for wastewater treatment, including in Indonesia. However, activated sludge have many contrains in practice, such as required extensive wastewater treatment plant and the emergence of new waste (excess silt from the growth of microorganism) that requires another process. Sludge that occurred from any water and wastewater treatment plant usually are non-biodegradable polutant and/or exist sludge from activated sludge basin. Nowadays, sludge treatment become very costly, in some cases cost of sludge treatment can be 50% of the total operational cost of wastewater treatment.

     Sludge treatment using plasma in water has been investigated. Various processes, such as active species formation, ultraviolet light emission, shockwaves and cavitations bubbles are active mechanism of plasma in water.

     These effects play an important role in destroying of any pollutant in wastewater. In our sludge reduction system, plasma working on destroying of non-biodegradable organic compound and convert it to become biodegradable organic compound and return it to the activated system. Using plasma system exist sludge can reduced up to 90%.

2. food and vegetables sterilization (2006 ~)

   Traditional technology utilizes water with or without a sanitizing agent to wash fresh food or vegetables. Chlorine is the most widely used sanitizing agent available for fresh produce, but it has a limited effect in killing bacteria on fruit and vegetable surfaces.

   We develop one new sterilization system using plasma in water. Plasma discharge both in water are efficient in the formation of chemically active species such as ^.OH, ^.H, ^.O, O₃, H₂O₂, etc. These active species are known as a powerful sanitizing agent. The active species dissolved in water and killing bacteria on fruit and vegetable surfaces. Moreover, these active species can also oxidize pesticide and metal which may exist on fruit and vegetable surfaces.  

3. H₂S and SO₂ gas effluent treatment (2007 ~ ) 

4. Renewable and clean energy (2007 ~  )