Investigation of using butachlor recovered from wastes in rice fields

Subject Areas : environmental management

mohammad ali sayad nejad ¹ ( - Chemistry & petrochemical Division, Research Institute of Petroleum Industry, Tehran, Iran )
ebrahim alaei ² ( استادیار پژوهشکده محیط زیست و بیوتکنولوژی، پژوهشگاه صنعت نفت. )
mohammad salimi jamarani ³ ( استادیار پژوهشکده شیمی و پتروشیمی، پژوهشگاه صنعت نفت. )

Received: 2009-04-04 Accepted : 2009-06-26 Published : 2014-12-22

Keywords: Butachlor, waste, Rice, Herbicide, Phytotoxicity,

Abstract :

  Chemical wastes in particular wastes obtained from pesticides production are very dangerous, so control and recovery of them has attracted attention of many researchers and environmental organizations in recent years. Wastes in butachlor industries are formed under undesirable conditions in the process and also during filtration step and cause serious problems. In this study, recovery of butachlor from waste and its effects on rice plant was investigated. Material and Methods: Waste and off-spec samples containing 55.8% and 63.3% butachlor, respectively, were subjected to solvent extraction. GC/MS and FT-IR were used to identify components of the extracts. The determination of butachlor recovered from waste and off-spec samples was carried out by HPLC and its amount was found to be 88.4% and 89.7%, respectively. Field tests were done on the rice plants to investigate using recovered samples in rice fields. The treatments were exposed at 1.5 Kg active ingredient / hectare of recovered butachlor, waste, off-spec and commercial samples. Results and Discussion: The phytotoxicity degrees of both waste and off-spec samples were 100% and the plants died after 28 days. The phytotoxicity degrees of commercial and recovered butachlor from waste and off-spec samples were 6.5, 8.5 and 8% under the same conditions, respectively, which indicates that the recovered butachlor can be used as effectively as the commercial sample in rice fields.

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Investigation of using butachlor recovered from wastes in rice fields

 

Mohammad Ali Sayyadnejad[1]

  [e-mail]

Ebrahim Alaie¹

Mohammad Soleymani Jamarani¹

 

 

Abstract

Introduction:

Chemical wastes in particular wastes obtained from pesticides production are very dangerous, so control and recovery of them has attracted attention of many researchers and environmental organizations in recent years. Wastes in butachlor industries are formed under undesirable conditions in the process and also during filtration step and cause serious problems. In this study, recovery of butachlor from waste and its effects on rice plant was investigated.

Material and Methods:

Waste and off-spec samples containing 55.8% and 63.3% butachlor, respectively, were subjected to solvent extraction. GC/MS and FT-IR were used to identify components of the extracts. The determination of butachlor recovered from waste and off-spec samples was carried out by HPLC and its amount was found to be 88.4% and 89.7%, r

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1- Chemistry & petrochemical Division, Research Institute of Petroleum Industry, Tehran, Iran