This study investigates the potential of Talaromyces adpressus TCPF to enhance phosphate recovery and nutrient bioavailability from sewage sludge ash (SSA) and fish meal (FM) through co-fermentation. The fungal treatment was found to significantly increase phosphate recovery, achieving up to 16 % efficiency, especially at a 10 g/L waste concentration. The key mechanism behind this enhancement is the production of low molecular weight organic acids (LMWOAs), which played a crucial role in solubilizing nutrients while also mitigating the negative effects of heavy metals like lead and cadmium. Spectroscopic analyses confirmed substantial acid-based leaching and biomineralization processes, with over 70 % of phosphorus successfully bioleached from metal-treated waste. These findings underscore the effectiveness of fungal treatments in transforming waste substrates into valuable bio-organic fertilizers. Fungal treatment boosts phosphate recovery, even in the presence of heavy metals, by employing processes such as bioweathering, bioprecipitation, biocorrosion, and bioleaching.

中文翻译：

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通过真菌处理提高污水污泥灰和鱼粉中废弃营养物质的回收率：重金属的机理见解和影响


本研究调查了 Talaromyces adpressus TCPF 通过共发酵提高污水污泥灰 （SSA） 和鱼粉 （FM） 中磷酸盐回收和营养物质生物利用度的潜力。发现真菌处理可显著提高磷酸盐回收率，效率高达 16%，尤其是在废物浓度为 10 g/L 时。这种增强背后的关键机制是低分子量有机酸 （LMWOA） 的产生，它在溶解营养物质方面起着至关重要的作用，同时也减轻了铅和镉等重金属的负面影响。光谱分析证实了大量基于酸的浸出和生物矿化过程，超过 70% 的磷成功地从金属处理过的废物中生物浸出。这些发现强调了真菌处理在将废弃基质转化为有价值的生物有机肥料方面的有效性。真菌处理通过采用生物风化、生物沉淀、生物腐蚀和生物浸出等过程，即使在存在重金属的情况下也能促进磷酸盐回收。