ABSTRACT

Montan resin (MR) is an industrial by-product or solid waste generated during the production of refined montan wax and is not typically reused. In this paper, a bio-modification method using three strains of microorganisms, Acinetobacter venetianus (AV), Pseudomonas aeruginosa (PA), and Phanerochaete chrysosporium (PC), was studied to promote the performance and bio-function of MR so that MR could be recycled. MR can be degraded by these three microorganisms, and their weight loss rates were similar over the treatment period of 15 days. Compared with the original MR, the hydrophilicity of modified MRs was improved, which was related to the increase in apparent oil-water partition coefficients (Kows) and oxygen-containing and hydrophilic groups in modified MRs based on IR and GC-MS analysis. The bio-function of modified MRs by the three strains in terms of promoting maize seed germination and seedling growth was greater compared with untreated MR. Overall, these findings indicate that biomodified MRs might have useful agriculture applications.

Implications: An environmentally-friendly method using microorganisms to achieve recycle of solid waste, montan resin (MR) was established in this study. Through this bio-treatment, the performance and bio-function of MR were both improved, that is the appearance and hydrophilicity of modified MRs were better than thoes in before, and the modified MRs treated by three strains showed the better promoting effects on maize seed germination and seedling growth than untreated MR, indicating the modified MRs have the certain potential of agricultural utilization in the future.

摘要

褐煤树脂 (MR) 是在生产精炼褐煤蜡过程中产生的工业副产品或固体废物，通常不会再利用。在本文中，一种利用威尼斯不动杆菌(AV)、铜绿假单胞菌(PA) 和Phanerochaete chrysosporium三种微生物的生物改性方法(PC), 被研究以提高 MR 的性能和生物功能，以便 MR 可以回收。MR 可以被这三种微生物降解，并且在 15 天的处理期内它们的失重率相似。IR和GC-MS分析表明，改性MRs的亲水性较原始MR有所提高，这与表观油水分配系数（Kows）以及改性MR中含氧基团和亲水基团的增加有关。与未处理的 MR 相比，这三个菌株修饰的 MR 在促进玉米种子萌发和幼苗生长方面的生物功能更大。总体而言，这些发现表明生物改性 MR 可能具有有用的农业应用。

启示: 本研究建立了一种利用微生物实现固体废物回收的环保方法，褐煤树脂 (MR)。通过这种生物处理，MR的性能和生物功能都有所提高，即改性MRs的外观和亲水性均优于之前的，并且经3个菌株处理的改性MRs对玉米种子表现出更好的促进作用。发芽率和幼苗生长率均高于未处理的 MR，说明改良后的 MR 具有一定的未来农业利用潜力。