Environmental Science and Pollution Research

, Volume 22, Issue 23, pp 19184–19193

Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix

  • Juan Salvador Chin-Pampillo
  • Karla Ruiz-Hidalgo
  • Mario Masís-Mora
  • Elizabeth Carazo-Rojas
  • Carlos E. Rodríguez-Rodríguez
Research Article

DOI: 10.1007/s11356-015-5093-3

Cite this article as:
Chin-Pampillo, J.S., Ruiz-Hidalgo, K., Masís-Mora, M. et al. Environ Sci Pollut Res (2015) 22: 19184. doi:10.1007/s11356-015-5093-3

Abstract

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.

Keywords

Biopurification system Pesticides Degradation Coconut fiber Optimization 

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Juan Salvador Chin-Pampillo
    • 1
  • Karla Ruiz-Hidalgo
    • 1
  • Mario Masís-Mora
    • 1
  • Elizabeth Carazo-Rojas
    • 1
  • Carlos E. Rodríguez-Rodríguez
    • 1
  1. 1.Centro de Investigación en Contaminación Ambiental (CICA)Universidad de Costa RicaSan JoséCosta Rica