简青霉-生物炭联合吸附处理染料废水

利用简青霉菌丝球固定生物炭制得一种新型生物吸附剂,吸附处理亚甲基蓝(MB)和甲基橙(MO)两种染料,考察了接触时间、菌丝球和生物炭用量、pH、染料初始浓度等影响因子对处理效果的影响。结果表明,菌丝球固定生物炭不仅保留了两者的吸附能力,而且易于固液分离。含炭菌丝球对亚甲基蓝的吸附效果优于甲基橙。甲基橙和亚甲基蓝的吸附平衡时间分别为48 h和60 h。亚甲基蓝在碱性条件下的吸附去除效果更好,甲基橙的吸附最适pH范围为5~6。Langmuir等温模型比Freundlich等温模型更适合模拟含炭菌丝球对亚甲基蓝和甲基橙的吸附行为。实验结果可以为微生物和生物炭的联合应用提供科学依据。

Biosorption of dyeing wastewater using a new biosorbent combing Penicillium simplicissimum and biochar

The mycelial pellets of Penicillium simplicissimum impregnated with biochar were synthesized and applied to sorption of methylene blue (MB) and methyl orange (MO) in aqueous solution. The effects of contact time, biosorbent dosage, pH, and initial dye concentrations were investigated via batch experiments. The results showed that the new biosorbent is efficient for dye adsorption, and can be completely separated from aqueous solution by filtration. The sorption equilibrium times of MO and MB were 48 h and 60 h, respectively. The biosorption of MB under alkaline conditions was better than under acidic conditions, while the optimum pH range of MO biosorption was 5 to 6. The adsorption process was better defined by the Langmuir isotherm model than by the Freundlich isotherm model. These experimental results could provide a scientific basis for combining microorganisms with biochar for decolorization treatment of dye-laden wastewater.