Using of bio-wastes in dye adsorption is one of the greenest influential applied techniques for the removal of dyestuff from the industrial effluents and it considered as waste management. In the current study, banana peel waste (BPW) was used as an inexpensive and eco-friendly adsorbent for methylene blue (MB) dye. Mechanical pretreatment of BPW was carried out and followed by biological activation using Rhizopus microspores. MB dye was adsorbed by mechanically pretreated BPW (mBPW) by 31%. Moreover, the day nine fermented BPW fibers (mbBPW) is the best time for R. microspores to complete activation, where adsorption ratio reached to about 96.5%. Likewise, enzymes activity was recorded the highest activity after this period of fermentation, where enzymes activity of cellulase, xylanase, lignin peroxidase, poly phenol oxidase and laccase were 0.75, 0.68, 0.38, 0.55 and 0.32 U/ml, respectively. The FT-IR, SEM and BET were used to observe the effect of treatment on the BPW. Otherwise, the kinetics study is illustrated that the adsorption of MB with mbBPW fitted with pseudo-first-order kinetic models. However, the adsorption parameters indicated that the Langmuir model is better to describe the adsorption of dye with excellent maximum adsorption capacity 991 mg/g. In conclusion, biologically activated BPW is very efficient for dye adsorption as well as waste management.

在染料吸附中使用生物废物是从工业废水中去除染料的最绿色有影响的应用技术之一，它被视为废物管理。在当前的研究中，香蕉皮废料（BPW）被用作亚甲基蓝（MB）染料的廉价且环保的吸附剂。进行BPW的机械预处理，然后使用根霉小孢子进行生物活化。机械预处理的BPW（mBPW）将MB染料吸附了31％。此外，九天发酵的BPW纤维（mbBPW）是小孢子芽孢杆菌的最佳时间完全活化，吸附率达到约96.5％。同样，在此发酵期之后，酶活性被记录为最高活性，其中纤维素酶，木聚糖酶，木质素过氧化物酶，多酚氧化酶和漆酶的酶活性分别为0.75、0.68、0.38、0.55和0.32 U / ml。使用FT-IR，SEM和BET观察治疗对BPW的影响。否则，动力学研究表明，mbBPW对MB的吸附符合拟一阶动力学模型。然而，吸附参数表明，Langmuir模型更好地描述了具有出色最大吸附容量991 mg / g的染料的吸附。总之，生物活化的BPW对于染料吸附以及废物管理非常有效。