| Abstrakt: |
Abstract: Organic production of agricultural waste and animal manure lead generation of vast quantity of wastes. Inefficient management of these agroindustrial wastes causes a serious threat to the environment. Biological waste treatment technology cocomposting is an aerobic digestion (AD) of organic wastes mixes, aiming to obtain compost regarded as a sustainable and clean environment method for nutrient recovery. Compared with conventional cocomposting methods, integrated composting is not merely the cocomposting of organic biomass amended with inorganic contents to initiate and sustain the biodegradation process but also to obtain added value compost with designed characteristics. The setup of appropriate integrated composting protocols can be the way to optimize the management of organic waste and to improve production process and also product nutritional contents. Therefore, this research study focused on the viability of cocomposting organic biomass with or without inorganic amendments to obtain added-value compost with enhanced nutritional characteristics. Substrate combinations derived from the solid fraction of digestate (SFD), agricultural (lignocellulosic) biomass, and bulking material (sawdust, peanut shell, and green yard waste) with or without inorganic amendments were cocomposted in a controlled composting system. During the composting process, the temperature of composting material and physicochemical, chemical, and maturity characteristics were monitored. Potential added-value characteristics such as biomethane production (BMP) and physical and microbial characteristics of matured compost were determined. Maximum temperatures reached a thermophilic range (< 60°C), which was lower than sanitizing temperatures set by the United States Environmental Protection Agency (USEPA). The bulking material showed the positive effect, reducing the EC (less than 5 dS m−1) and N losses up to (10–13%) during integrated composting, while amendment of inorganic content did not alter the composting process but enhanced nutritional characteristics (micro- and macro elements) of the compost obtained. This pilot scale integrated composting facility evaluated production characteristics of composting process; the integrated composts showed optimal degree of stability and maturity depicting appropriate physical characteristics to be used as organic fertilizer. Further studies into the optimal rate of amending inorganic ingredients and evolution of nutritional values are recommended for integrated composting. Graphical Abstract: ![]() |
Full text from SpringerLink