Contributing to the Circular Economy


The circular economy refers to an economic system in which products and raw materials that have been "discarded" in the conventional linear economic system of "Take", "Make" and "Waste" are regarded as new "resources". These resources are circulated without producing waste.
Product Design MASAKUNI contributes to the realization of the circular economy by manufacturing food recycled compost using -bioreactor-, an independently developed organic waste recycling system.

circular economy image by manufacturing food recycled compost


Organic waste recycling system -bioreactor-


Organic waste recycling system -bioreactor-

Bioreactors are organic matter high-speed fermentation equipment.Organic waste becomes bad bacteria when left untreated, but by treating bad bacteria with a bioreactor, it changes into good bacteria.The treated organic waste is reborn as compost, fertilizer, feed and soil conditioner and becomes a resource.
By using these products, we can reduce pesticides and chemical fertilizers and produce safe and secure crops. By using it as a supplementary material for feed and livestock, it also leads to the suppression of livestock odors and the improvement of the quality of meat.In addition, by increasing this bacteria, it is also possible to purify water.
Bioreactors are indispensable systems crucial for the future of humankind that contribute to the preservation of the global environment in the future.


Fast-fermenting bacteria in organic waste


Bio Rebirth is a natural complex of bacteria that collects multiple natural bacteria such as indigenous fungi and cultures them by our original manufacturing method.
A device that efficiently activates Bio Rebirth is a bioreactor (a device that reacts organisms scientifically).

Fast-fermenting bacteria in organic waste, Bio Rebirth


Process of recycling organic waste


Process of recycling organic waste

  • Bioreactors are a bio-method that performs processing with the power of bacteria.The difference from the drying method is in the deliverables (fermentation of treated waste). The deliverables processed by the bioreactor are revived as good bacteria, fertilizer, and nutrient-rich compost, fertilizer, feed, and there is nothing to throw away.The economic effect is enormous because the items that were collected and incinerated at the great cost become valuable goods.
  • No wastewater or waste is produced.Bioreactors don't need water supply or auxiliary materials, and nothing is discarded.
  • It is easy to establish.Ideally, it should be placed near the waste so that it can be treated before it starts to rot.Installation is completed only by installing in a place where there is no rain or wind, and only electrical work is required.

Precautions for use


working bioreactor

  • Things that can be treated (general organic waste): food waste (food residue), mowing lawn, mowing grass, vegetable waste, rice bran, rice husks, weeds, dead leaves, miscellaneous trees, examples of factory food waste (meat, rice, fish, bread, noodles, vegetables, fruits), food residues, animal residues, animal excrement
  • Difficult to processing: bones, shells, oil, chicken skin (takes time to process)
  • Not processed :(what you put in by mistake can be removed later) Vinyl, plastic bottles, metal, tableware
  • What not to put in: detergents, chemicals, tobacco, liquids (water, soup, oil, etc.) and large amounts of spices or foods containing spices
  • Bio Rebirth are aerobic bacteria, so-called good bacteria. If there is too much moisture, anaerobic bacteria (bad bacteria) will increase and rot, so you need to pay attention to the moisture content.
    If you hold the cell and make rice balls, if you keep the shape and feel the moisture, there is too much moisture.In that case, it is necessary to refrain from adding materials for a while and dry them or replace them with a new Bio Rebirth

Product -bioreactor-

The amount of input for each model at one time is a guideline for Bio Rebirth to process at once.You can put in the first time and after 3 hours ~ 5 hours put in the second time.The processing amount that can be predicted by two insertions is set as the daily processing amount but Fast-processing items can be thrown in three times a day.At night, we dry and manage the health of bacteria.

Throughput/day Size Treatment tank capacity Input amount at a time Electricity usage/day Electricity Rates/Day
Bio Reactor mini5 10kg 1000×650×850mm 32l 5kg 3.08kWh 47yen
Bio Reactor mini10 30kg 800×510×780mm 69l 10kg 3.76kWh 56yen
PD-MN1 100kg 1500×1200×2000mm 392l 50kg 38.8kWh 582yen
PD-MN50 500kg 2700×1400×2300mm 1696l 250kg 194.9kWh 2926yen
PD-MN1 1000kg 3200×1600×3500mm 3078l 500kg 304.7kWh 4573yen
  • The amount of processing is a guideline that can be processed in a day.It depends on the material to be processed, the environment (temperature, humidity).
  • Electricity consumption is a guide and will vary depending on the environment.
  • The size is a guide and is subject to change without notice. (For quality improvement through development)
  • In addition, we also accept processing machines that are compatible with the processing volume and special materials separately accepted.


  • Company name
    Corporation Product Design MASAKUNI
    Masakuni Oue
    Hiroshima Prefecture Hiroshima City Asa Minami-ku Tomonishi 5-chome 1323
    Telephone number