Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix
সংরক্ষণ করুন:
| লেখক: | , , , , |
|---|---|
| বিন্যাস: | artículo original |
| প্রকাশনার তারিখ: | 2015 |
| বিবরন: | Pesticide biopurification systems contain a biologically active matrix (biomixture) responsible for the accelerated elimination of pesticides in wastewaters derived from pest control in crop fields. Biomixtures have been typically prepared using the volumetric composition 50:25:25 (lignocellulosic substrate/humic component/soil); nonetheless, formal composition optimization has not been performed so far. Carbofuran is an insecticide/nematicide of high toxicity widely employed in developing countries. Therefore, the composition of a highly efficient biomixture (composed of coconut fiber, compost, and soil, FCS) for the removal of carbofuran was optimized by means of a central composite design and response surface methodology. The volumetric content of soil and the ratio coconut fiber/compost were used as the design variables. The performance of the biomixture was assayed by considering the elimination of carbofuran, the mineralization of 14C-carbofuran, and the residual toxicity of the matrix, as response variables. Based on the models, the optimal volumetric composition of the FCS biomixture consists of 45:13:42 (coconut fiber/compost/soil), which resulted in minimal residual toxicity and ∼99 % carbofuran elimination after 3 days. This optimized biomixture considerably differs from the standard 50:25:25 composition, which remarks the importance of assessing the performance of newly developed biomixtures during the design of biopurification systems. |
| দেশ: | Kérwá |
| প্রতিষ্ঠান: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/74549 |
| অনলাইন ব্যবহার করুন: | https://link.springer.com/article/10.1007/s11356-015-5093-3 https://hdl.handle.net/10669/74549 |
| মুখ্য শব্দ: | Biopurification system Pesticides Degradation Coconut fiber Optimization |