Program : Environmental and Energy Management Technology (B8-1)

Following the success of waste to products conversion in Phase I of the project, phase II has started to develop more products to serve the requirements of users and waste producers. The project involves material synthesis using local waste as precursors, product development and processing on the laboratory scale, then scaling up for transfer to business incubation.

Waste under investigation includes rice husk ash from rice mills and power plants, waste sediment from aluminium anodising, sludge from pulp plants, etc. This waste is used, without special or complicated pretreatments, as precursors in place of minerals from irreversible natural sources.

The technology for waste to products conversion is applicable to various applications, e.g. high temperature uses, leisure, bio-filtering, soil-less horticulture. Many product prototypes have been accepted for awards from national and international innovation exhibitions.

Porous media for bio-fitering and planting (Thailand Patent Application no. 0801000627 and Petty patent application no. 0503000590), are products among those developed in this project that have been licensed to Environmental and Energy Technology Co. Ltd. for production. The media are made from 100% rice husk ash. The production process includes milling, mixing, palletizing and firing. All equipment in the process is carefully selected and some has been developed to keep the process simple and environmentally friendly as well as cost and energy efficient to facilitate business start-up opportunities.

 Horti – Media

The media have pore volumes up to 70%, with acceptable strength .Generally, they last longer than other media derived from natural sources, e.g., coconut fibre, perlite and vermiculite.

Planting Test at Department of Soil Science, Faculty of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang


Gold medal award from the International exhibition of Inventions of Geneva, 2007.

The media contains interconnecting porous. The size of pores for functional microorganisms ranges from submicrons up to a few millimeters and the total surface area is ~ 11 m2/g. The effective surface area is 1.5 times greater than that natural coral.

Simple test of water treatment for fresh water fish tank at Patumthani Inland Fisheries Research and Development Center. The media in netted bags is placed inside the blue container after a sediment filtering plate. Water is circulated from the tank to the bottom of the container, passing through a sediment filter, the media, and then overflowing to the tank. Microorganisms inside the media will naturally duplicate sufficiently for the treatment in 10 days

Project Leader :

Dr. Pakamard Saewong (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Research Team :

Umaporn Sanewirush, Eaksit Koktha