Abstract
Purpose
A Brazilian agrochemical company agreed to conduct an initiative to further evaluate the environmental impact caused by its product SC50. This agrochemical is obtained from thiophanate-methyl, an active ingredient produced in Brazil as well as in Japan, where another industrial plant of the same corporation is located. The initiative evaluated the environmental performance of the SC50 life cycle so as to provide the company’s private management with information to influence stakeholders in the sector.
Methods
The working method comprised five steps. Step 1 established the impact profile associated to the SC50 life cycle. The diagnosis was obtained by LCA from a ‘cradle-to-grave’ approach. Step 2 identified the stages causing significant environmental impacts throughout the entire life cycle. In Step 3, improvement actions were proposed in order to mitigate, reduce, or even minimize the effects detected. Step 4 comprised the modeling, in which specific scenarios and their environmental impacts were analyzed. The synergistic effect was checked by successive additions of improvement actions, characterizing each scenario. Step 5 analyzed the results, comparing impact profiles of each scenario with the original diagnosis (as a baseline scenario) and verifying the individual effect of each action.
Results and discussion
The results indicate relevant contributions of the dispersion from the SC50 life cycle in terms of global warming, terrestrial ecotoxicity, human toxicity, and eutrophication. Regarding to the manufacture, the use of diesel has great influence in the impacts of SC50, and its performance as eutrophication is conditioned to the low efficiency of the wastewater treatment. While the company decided not to implement improvements in the dispersion stage fearing market losses, five alternatives based on cleaner production principles were proposed to improve performance: to review the instrumentation systems in the plant, to adjust wastewater treatment, to stop importing thiophanate-methyl from Japan, to install an energy cogeneration system, and to substitute renewable glycerin with a fossil counterpart. All scenarios led to improvements from baseline.
Conclusions
The use of LCA determined the impact profile associated to SC50 in soybean pest control. Because of strategic reasons, the company decided not to propose improvements in the most significant stage of this life cycle. Among the improvements, we highlight the replacement of imported thiophanate-methyl by a Brazilian equivalent and the installation of a combined cycle for energy recovery. For both these cases, however, the appropriate organizational measures must be taken before implementation.
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Kulay, L., Gripp, V.S., Nogueira, A.R. et al. Verifying the effectiveness of environmental performance improvement actions in the chain of production of an agrochemical produced in Brazil. Int J Life Cycle Assess 22, 644–655 (2017). https://doi.org/10.1007/s11367-016-1108-7
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DOI: https://doi.org/10.1007/s11367-016-1108-7