HARADA Laboratory

Affiliation：Faculty of Bioresource Sciences / Department of Development of Local Resources
Position：Position / Dean, Graduate School of Arts and Sciences
Degree：Ph.D.（Science）

▶︎ Laboratory Web Site

1. Phosphorus and potassium recovery by crystallization method
2. Phosphorus recovery by adsorption method
3. Decolorization by Fenton method
4. Optimized for biological processing

１）The solubility product is used to recover the three components of fertilizer, nitrogen, phosphorus, and potassium, as magnesium salts.
In other words, magnesium salts are recovered as magnesium ammonium phosphate and magnesium potassium phosphate. The key point is that they are recovered from liquid and solid phases of biomass origin that are discarded without being utilized.

２）The key is to collect and concentrate a thin concentration of the target object little by little. When the adsorbent no longer adsorbs the target substance, regeneration technology can be applied to desorb it as a concentrated solution, and the adsorbent can be reused to repeat the adsorption process.

３）The iron ions are loaded on a porous material, which reacts with hydrogen peroxide to generate radicals and decolorize the material. Unlike the method using an iron sulfate solution, the reaction can be carried out with fewer solids.

４）We are considering applying a small pretreatment aeration tank as a preliminary step in the membrane bioreactor process to prevent membrane clogging.

We will proceed with the demonstration and practical application of 1-3 of our current research.
We will also study the treatment of wastewater and solids associated with biofuel creation.

We feel that universities are often slow to respond to local and societal demands, while local communities and societies are sensitive to collecting information on demands, but often lack the know-how to meet them.
Therefore, we would like to collaborate not only in the research we are currently conducting or would like to pursue, but also in solving issues where there is demand but no way to meet it.

Industry-Government-Academia Collaboration：
1.Kumamoto Sewerage Public Corporation research study (MAP method – phosphorus recovery using liquid cyclone) (mini-plant experiment)
2.Disinfection by electrolytic hypochlorite method using NaCl of landfill leachate origin (mini-plant experiment)
3.Study on decolorization of livestock wastewater (mini-plant experiment)
4.Karatsu City Research on advanced water purification methods (mini-plant experiment)
5.Reduction of hydrogen sulfide by addition of clay minerals (demonstration of addition at an actual plant)