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Recycling of Piggery Effluent for Azolla microphylla Production and Application in Vermiculture for Enhancing Nutrients Quality and Driving BCG Economy Model |
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| รหัสดีโอไอ | |
| Creator | 1. Phearun Lay 2. Chuleemas Boonthai Iwai |
| Title | Recycling of Piggery Effluent for Azolla microphylla Production and Application in Vermiculture for Enhancing Nutrients Quality and Driving BCG Economy Model |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2565 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 15 |
| Journal No. | Special |
| Page no. | 68-86 |
| Keyword | Azolla microphylla, Wastewater, Vermicompost, Nutrient |
| URL Website | https://tshe.org/main/ea-journal-online |
| Website title | EnvironmentAsia Journal |
| ISSN | 1906-1714 |
| Abstract | Piggery wastewater is a major source of environmental problems, while Azolla microphylla (AM) is a good phytoremediator and an essential source of nutrients and protein. The effect of surface areas and time on biomass production and nutrients of AM was investigated. Meanwhile, efficiencies of AM in removing contaminants were also identified. A completely randomized design (CRD) with three treatments and three replicates, nine plastic containers with three different sizes of surface areas including large (L, 0.47 m2), medium (M, 0.22 sq m), and small (S, 0.16 sq m) were selected for recycling piggery wastewater and AM production. AM and cow dung (CD) were mixed 50:50 in a plastic bucket 30 cm in diameter and 18 cm high by following CRD for application biomass of AM in vermiculture. It revealed that the large area was the most convenient size for increasing biomass (399%) and doubling time around (3-6 days) within 14 days. Chemical oxygen demand (COD) and biological oxygen demand (BOD) were reduced well in the M for 2 weeks. Nitrate nitrogen and phosphate were removed effectively in the M and L within 3 weeks, respectively. Interestingly, initial total Kjeldahl nitrogen (TKN, 1.65%), crude protein (10.3%), and total phosphorous (TP, 0.37%) were increased in biomass of AM by 2.41%, 15.04%, and 0.43%, respectively. Copper (Cu) and Zinc (Zn) was up taken 54% and 11% from piggery effluent, meanwhile, these were increased in AM in respective 22%, and 111%. The C/N ratio was significantly reduced in vermicompost of cow dung with AM (CDA) approximately (13.5), while the vermicompost and compost of cow dung (CD) were more than (15 and 17.8), respectively. The pH, organic matter (OM), organic carbon (OC), Cu, and Zn showed better in vermicompost of CDA than in the compost. The L size was effective in producing biomass of AM within 14 days, and the AM has effectively removed pollutants from piggery effluent in M and S. Hence, AM not only improved water quality but also produced its biomass for sustainable agriculture and environment friendly. Whereas, the vermicompost of CDA was a good one for improving nutrient quality and earthworm production. |
