绿色废物（GW）管理是一个关键问题，由于其高生产率和各种物理性质和化学成分。堆肥是GW处理和增值的有希望的替代方法。然而,难以抑制的组分如木质素和纤维素的存在增加了加工时间。诸如添加共底物和操作修改之类的策略改善了处理时间和堆肥质量。因此,在这项研究中，已经实施了三种策略：（i）添加未加工食品（UF）和加工食品（PF）作为GW的共同底物，以改善过程开始时底物的营养成分，（ii）添加磷矿（PR）以提高产品质量，和(iii)使用两阶段堆肥(TSC)来加速降解。为此,用相同混合物(48%GW+21%UF+18%PF+13%木屑(SW))进行三种处理:(i)TA(TSC+15%PR),（ii）TB（传统堆肥+15%PR），和(iii)TC(传统堆肥)。在工艺和堆肥质量方面，TSC与TC相比没有显着差异，而PR的加入增加了产品的磷含量。然而,根据哥伦比亚土壤改良法，TC生产的堆肥质量最高。
Green waste (GW) management is a key issue due to its high production rate and its variety of physical properties and chemical composition. Composting is a promising alternative for GW treatment and valorization. However, the presence of recalcitrant components such as lignin and cellulose increase the processing time. Strategies such as addition of co-substrates and operative modifications have improved the processing time and compost quality. Therefore, in this study, three strategies have been implemented (i) addition of unprocessed food (UF) and processed foods (PF) as co-substrates for GW to improve the nutrients composition of the substrates at the beginning of the process, (ii) addition of phosphate rock (PR) to improve product quality, and (iii) the use of two-stage composting (TSC) to accelerate the degradation. For this purpose, three treatments with the same mixture (48% GW + 21% UF + 18% PF + 13% sawdust (SW)) were conducted: (i) TA (TSC + 15% PR), (ii) TB (traditional composting +15% PR), and (iii) TC (traditional composting). TSC did not show significant differences compared with TC regarding the process and compost quality, while the addition of PR increased the phosphorus content of the product. However, TC produced the compost with the highest quality according to the Colombian legislation for soil amendment.
