This study investigated the production conditions of a potassium magnesium phosphate fertilizer with vinasse (a by-product of the sugar or ethanol industry) and grape marc (a by-product of the wine-making industry). A mixture of vinasse and grape marc was subjected to pyrolysis under a nitrogen gas atmosphere, and water was used to extract potassium from the end product. Potassium magnesium phosphate (potassium-struvite, KMgPO₄.6H₂O), a slow-release fertilizer compound, was obtained from the extract with potassium to explore process conditions and product characteristics. Producing fertilizer products from residual materials is of paramount significance for conserving natural resources. The mixture was pyrolyzed, allowing us to remove potassium from the complex matrix of concentrated vinasse to a clear and high alkaline solution. The residual carbon was activated by decomposing (pyrolysis) and treating the residue and then washing it with water. The extract had high alkalinity, suggesting that the potassium in the mixture resulted in carbon activation during biomass pyrolysis. Pyrolysis and treatment can be used to produce activated carbon from vinasse. This study also investigated the solubility of vinasse in water and aqueous solutions. K-struvite with 10.67% K₂O was about 2% soluble in water, indicating that the end product was a slow-release fertilizer agent. In conclusion, this process can be used to produce potassium (a slow-release fertilizer) and activated carbon (a by-product) from vinasse for different purposes.

这项研究调查了磷酸钾钾镁肥与酒糟（制糖或乙醇行业的副产品）和葡萄渣（酿酒行业的副产品）的生产条件。将酒糟和葡萄渣的混合物在氮气气氛下进行热解，并使用水从终产物中提取钾。钾磷酸镁（钾鸟粪石，KMgPO ₄ ·6H ₂O）是一种缓释肥料化合物，从含钾的提取物中制得，以研究工艺条件和产品特性。从残留材料生产肥料产品对于保护自然资源至关重要。将混合物热解，使我们能够从浓酒糟的复杂基质中除去钾，形成澄清的高碱性溶液。通过分解（热解）并处理残留物，然后用水洗涤，将残留的碳活化。提取物具有较高的碱度，表明混合物中的钾导致生物质热解过程中的碳活化。热解和处理可用于从酒糟中生产活性炭。这项研究还研究了酒糟在水中和水溶液中的溶解度。钾盐鸟粪石含10.67％的钾₂ O约2％溶于水，表明最终产品是缓释肥料。总之，该工艺可用于从酒糟中生产钾（一种缓释肥料）和活性炭（一种副产品），以用于不同的目的。