Nitrogen is an essential nutrient for plant growth. When the plants have been grown for a long-term effect to decreased nitrogen in soil and insufficiency of the plant growth. One biological method for increasing the nitrogen content in soil is utilize of free nitrogen-fixing bacteria Azotobacter. Therefore the objective of this research was to search natural material suitable for Azotobacter fixation. The 10 natural materials were observed physical structure and investigated the ability of natural materials for Azotobacter fixation. The results showed that water hyacinth and bagasse stalks were fixed the Azotobacter of 2.43x108 and 1.94 x108 CFU per gram of each natural material respectively. After that the selected fixed Azotobacter of water hyacinth and bagasse stalks were studied the growth of Brassica Chinensis. This experiment was designed to 4 treatments. The first treatment was mixed of water hyacinth stalks and the Azotobacter. Second treatment was mixed of bagasse stalks and the Azotobacter. The third treatment was the Azotobacter only. The last treatment was soil only. The results indicated that the average of plant growth include height leaf number root length fresh weight and dry weight of the mixed of water hyacinth stalks and the Azotobacter had significantly higher growth rates than other treatments. The total nitrogen was also increased 1.4 fold in the soil. All results suggest that the water hyacinth stalk is alternative for the fixation of the free nitrogen-fixing bacteria Azotobacter as induce nitrogen in the soil and plant growth promotion.

The objectives of this research aimed to study the appropriate ratio for making light weight brick which composed of the sawdust and water hyacinth and to study the efficiency of light weight brick. The research method was done by study the mechanical properties the compressive strengths and the physical properties with water absorption. The main materials were as follows: type 1-normal Portland cement lime gypsum aluminum powder ratio 30:9:9:2 and researchers determined 5 levels including of sand sawdust and water hyacinth according to the following proportions 40:5:5 30:10:10 20:15:15 10:20:20 and 0:25:25. The results revealed that the most appropriated ratio of the light weight brick was 40:5:5. The maximum compressive strength was 1.63 N/mm2. It is close to 2 N/mm2 from class 2 light weight brick standards value. The lowest value of water absorption was 514.29 kg/m3. It is close to 500 kg/m3 from water absorption of light weight brick standard value. Therefore these results supported the environmental conservation objective by increasing the economics values of sawdust and water hyacinth.

In the research on “The Costume Creative Design and Accessory Creative Design Green Eco Innovation for Asian Community” the purpose of the study was to create the product design on the costumes and accessories for working ladies and gentlemen. Its main sources were on Thai culture representative of the ASEAN cultures that were inspired by the culture and lifestyle of Thai people. This study has selected Thai population Thai culture Thai lifestyle Thai wisdom Thai basketry and fertility of the central region in Thailand. The samples were additionally selected from the weaving culture and fertility of the rice field in the middle of Thailand. The tools used were based on the descriptive analysis from the structure of basketry obtained from the central region of Thailand. The color analysis was based on the integrity of the rice paddy in the central plains as well as the pattern analysis was from Thai basketry and pattern of rice paddy in the central plains. The fabric used in the design was made of the natural fibers water hyacinth mixed with cotton at the ratio of 30: 70. On the product development the principles of 4P Marketing Strategy and the application of natural colors were carried to obtain the ladies’ costumes and accessory creative design and unique new handbag. From the results the analysis of basketry structure in the central region indicated after making a section for the shape as the balancing curve and circular shapes the lady costumes and accessory creative designs could be successfully fashioned.When analyzing for proper colors on the costumes and accessories the designs based on the fertility of the rice paddy in the central plains together with the cultural prosperity urbanized society and the nature were applied. The appropriate colors chosen to be yellow red and blue were from natural colors of Garcinia Rave and Indigo respectively. Therefore the products of costumes and accessory creative designs could be one innovative green textile that meets the needs of the consumers in the ASEAN communities who are concerning on the sustainable and environmental conservation.

The objective of this research was to compare the effectiveness of water hyacinth and cootail for wastewater treatment by taking water sample from Klong Bangkhen-mai near King Mongkut’s University of Technology North Bangkok. The results showed that there was no diifference on water temperature changes in tanks between two plants. pH of water in coontail tanks was between pH 8.69 to pH 8.91 and pH of water in water hyacinth tanks was slightly increasing between pH 7.71 to pH 8.26. The more amount of coontail added the higher DO would be between 9.18 mg/L to 10.02 mg/L. Moreover COD of water was decreasing according to the amount of cootail addition and more effective than that in water hyacinth tank especially in 150 grams coontail tanks but TS in water hyacinth tanks was much more decreasing than that in coontail tanks. TS was between 21.73 mg/L to 25.91 mg/L. COD was between 45.30 mg/L to 48.34 mg/L.