The planning of collection routes in a waste cooking oil system is studied in this chapter. The problem is modeled as a multi-depot vehicle routing problem with mixed closed and open routes. This is to mean that all routes start at one depot but can end at the same or at a different one, depending on what minimizes the decision-maker goal (cost, distance travel, among others). The developed approach allowed the company to redesign its collection system, which resulted in a decrease of 13% on mileage and 11% on fleet hiring cost when compared to the current company operation mode. The impact of expanding the collection network is also studied allowing for a reduction of the collection cost per client.
Waste cooking oil Routing Multiple depots Open routes Time duration constraints Waste collection
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