During August 28–29, 2014, (the month of the Queen’s birthday celebration in Thailand), more than 100 volunteers, including Nong-Nae villagers, undergraduate students from Naresuan University, primary school students from the Nong-Nea community, representatives of the Office of the Royal Development Projects Boards, local government agencies, and news reporters and actors and actresses from Channel 3 TV Thailand (see Figure 11) were present at the site to cultivate 0.12 million vetiver grasses (bare roots) to create a 1.2-km vetiver fence along Tat Noi creek, the major route of transporting residual phenol to the shallow wells of the villagers. Three to five rows of vetiver hedgerows were planted, covering around 1–1.5 m of the creek banks. Vetiver hedgerows are widely accepted as an effective measure to prevent erosion of creek banks (Greenfield, 1990; Truong, 2014). However, here at Nong-Nea, the volunteers aimed to use vetiver hedgerows to transform phenol to harmless polyphenols through the action of H2O2 and peroxidase produced from the roots of vetiver grasses, followed by the rhizomicrobial degradation of phenol to harmless by-products, as shown in the aforementioned laboratory study.
During August 28–29, 2014, (the month of the Queen’s birthday celebration in Thailand), more than 100 volunteers, including Nong-Nae villagers, undergraduate students from Naresuan University, primary school students from the Nong-Nea community, representatives of the Office of the Royal Development Projects Boards, local government agencies, and news reporters and actors and actresses from Channel 3 TV Thailand (see Figure 11) were present at the site to cultivate 0.12 million vetiver grasses (bare roots) to create a 1.2-km vetiver fence along Tat Noi creek, the major route of transporting residual phenol to the shallow wells of the villagers. Three to five rows of vetiver hedgerows were planted, covering around 1–1.5 m of the creek banks. Vetiver hedgerows are widely accepted as an effective measure to prevent erosion of creek banks (Greenfield, 1990; Truong, 2014). However, here at Nong-Nea, the volunteers aimed to use vetiver hedgerows to transform phenol to harmless polyphenols through the action of H2O2 and peroxidase produced from the roots of vetiver grasses, followed by the rhizomicrobial degradation of phenol to harmless by-products, as shown in the aforementioned laboratory study.
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