Treatment of smuggled cigarette tobacco by composting process in facultative reactors

摘要

Graphical abstractDisplay OmittedHighlights•The smuggled cigarette tobacco can be treated through composting in facultative reactor.•Results showed its efficiency in toxicity free and stable compost.•The composting remained at optimal ratio without the need for manipulation.•Composting facultative reactor it is an efficient and low-cost technology.AbstractThis paper presents a study on the degradation of smuggled cigarette tobacco combined with domestic organic waste and sawdust or wood chips, using facultative reactor. Four reactors with different amounts of residue were assembled. For the study of the quality of the compost obtained, physicochemical, phytotoxicity and microbiological analyses were carried out. The mixture with wood chips presented the best temperature conditions and pH variation optimizing the degradation. The final germination index (GI) values of all treatments were above the recommended GI value (50%) and the final C/N ratio between 8 and 13 indicated a mature compost. The concentration of metals under study was below the limit allowed for the commercialization. The composting carried out in all facultative reactors provided ideal conditions for the total sterilization of the final compost. Therefore, the treatment of smuggled cigarettes through facultative reactors was efficient to produce stable and mature compost.