Sugarcane bagasse, a largely available waste worldwide, was submitted to solid-state fermentation (SSF) using the fungus Metarhizium anisopliae, aiming to produce enzymes. The solid waste generated from SSF was tested as an alternative biosorbent to treat colored effluents containing crystal violet (CV) dye. The biosorbent, here named BW (bagasse waste), was characterized, and experimental tests were performed to verify the influence of pH and dosage on the CV biosorption. Isotherms and biosorption kinetics were performed, and the biosorption thermodynamic parameters were determined. The potential of BW was also evaluated for the treatment of a simulated textile effluent. The maximum biosorption capacity was 131.2 mg g-1 at 328 K, and the Liu was the most appropriate model to represent equilibrium data. The biosorption was spontaneous and endothermic. The use of BW in the simulated effluent showed that it is an efficient material, reaching color removal values of 85%. Therefore, the sugarcane bagasse generated from SSF can be considered a potential biosorbent to remove CV from textile effluents. This finding is relevant from the total environment viewpoint, since, at the same time, SSF generates enzymes and a solid waste, which in turn can be used as biosorbent to treat colored effluents.

中文翻译：

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酶生产过程中产生的固体废物可能是潜在的生物吸附剂，用于处理含有结晶紫染料的有色废水。

甘蔗渣是一种在全球范围内广泛使用的废物，已使用真菌金属异化菌进行了固态发酵（SSF），旨在产生酶。测试了从SSF产生的固体废物作为替代生物吸附剂，以处理含有结晶紫（CV）染料的有色废水。对生物吸附剂（此处称为BW（甘蔗渣废料））进行了表征，并进行了实验测试以验证pH和剂量对CV生物吸附的影响。进行等温吸附和生物吸附动力学，并确定生物吸附热力学参数。还评估了BW在处理模拟纺织品废水中的潜力。在328 K下最大生物吸附容量为131.2 mg g-1，Liu是最合适的模型来表示平衡数据。生物吸附是自发的并且是吸热的。BW在模拟废水中的使用表明它是一种有效的材料，可达到85％的脱色率。因此，从SSF产生的甘蔗渣可以被认为是从纺织品废水中去除CV的潜在生物吸附剂。从整个环境的角度来看，这一发现是有意义的，因为与此同时，SSF会产生酶和固体废物，而这些废物又可以用作生物吸附剂来处理有色废水。