6. Based on the findings of step 5, the steps 1–4 might be
repeated. Accordingly, fine-tuning/revising the scope or even
the goal in some cases should be performed for improving the
life-cycle model.
(a) The analysis should be iterated two to four times in order
to complete the study. This is typically decided by the
quality requirements or ambitions, the complexity of the
analyzed algal fuel production systems, the specifically
analyzed question(s), as well as data accessibility and
quality.
(b) The primary goal and scope definition, crucial LCI and
LCIA parameters, and important primary outcomes of the
sensitivity, consistency, and integrity checks should be
detailed and documented at the commence of the study.
This should be instructed by the basic requirements of
reporting needed for the deliverable. The preliminary core
report should be considered during subsequent repetitions as work in progress and it should be continually
revised, fine-tuned, and completed towards the final
report (data set and/or a study report).
Fig. 2 Detailed illustration of the iterative procedure to LCA analysis focusing on inventory data compilation
and modeling (adopted from ISO [22])
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Homa Hosseinzadeh-Bandbafha et al.