当前位置: X-MOL 学术Biodegradation › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enrichment and key features of a robust and consistent indigenous marine-cognate microbial consortium growing on oily bilge wastewaters.
Biodegradation ( IF 3.6 ) Pub Date : 2020-04-06 , DOI: 10.1007/s10532-020-09896-w
Melina Nisenbaum 1 , Georgina Corti-Monzón 1 , Marcela Villegas-Plazas 2 , Howard Junca 2 , Adriana Mangani 3 , María L Patat 4 , Jorge F González 5 , Silvia E Murialdo 5
Affiliation  

Oily bilge wastewater (OBW) is a hazardous hydrocarbon-waste generated by ships worldwide. In this research, we enriched, characterized and study the hydrocarbon biodegradation potential of a microbial consortium from the bilges of maritime ships. The consortium cZ presented a biodegradation efficiency of 66.65% for total petroleum hydrocarbons, 72.33% for aromatics and 97.76% removal of n-alkanes. This consortium showed the ability to grow in OBWs of diverse origin and concentration. A 67-fold increase in biomass was achieved using a Sequential Batch Reactor with OBW as the only carbon and energy source. The bacterial community composition of the enriched OBW bacterial consortium at the final stable stage was characterized by 16S amplicon Illumina sequencing showing that 25 out of 915 of the emerged predominant bacterial types detected summed up for 84% of total composition. Out of the 140 taxa detected, 13 alone accumulated 94.9% of the reads and were classified as Marinobacter, Alcanivorax, Parvibaculum, Flavobacteriaceae, Gammaproteobacteria PYR10d3, Novispirillum and Xanthomonadaceae among the most predominant, followed by Thalassospira, Shewanella, Rhodospirillaceae, Gammaprotobacteria, Rhodobacteriaceae and Achromobacter. The microbial community from OBW bioreactor enrichments is intrinsically diverse with clear selection of predominant types and remarkably exhibiting consistent and efficient biodegradation achieved without any nutrient or surfactant addition. Due to there is very little information available in the OBW biodegradation field, this work contributes to the body of knowledge surrounding the treatment improvement of this toxic waste and its potential application in wastewater management.

中文翻译:

在含油舱底废水上生长的稳健且一致的本地海洋同源微生物财团的浓缩和关键特征。

舱底污水含油废水(OBW)是世界各地船舶产生的有害碳氢化合物废物。在这项研究中,我们丰富,表征和研究了来自海洋船底污水的微生物财团的烃类生物降解潜力。联盟cZ提出的总石油烃生物降解效率为66.65%,芳烃的生物降解效率为72.33%,正构烷烃的生物降解效率为97.76%。该财团显示出能够在各种起源和浓度的OBW中生长的能力。使用以OBW作为唯一碳源和能源的顺序间歇式反应器,生物量增加了67倍。最终稳定阶段的富集的OBW细菌群落的细菌群落组成由16S扩增子Illumina测序表征,显示在915种检测到的主要细菌中,有25种占总成分的84%。在检测到的140个分类单元中,仅13个分类累积了94.9%的读数,被分类为MarinobacterAlcanivoraxParvibaculum,黄杆菌,γ-变形菌PYR10d3,Novispirillum和Xanthomonadaceae最主要之间,其次是Thalassospira希瓦氏菌,红螺,Gammaprotobacteria,Rhodobacteriaceae和无色。OBW生物反应器富集的微生物群落本质上是多样的,主要类型的选择清楚,并且在不添加任何营养物或表面活性剂的情况下,表现出始终如一的高效生物降解作用。由于OBW生物降解领域的信息很少,这项工作有助于围绕这种有毒废物的处理改进及其在废水管理中的潜在应用的知识体系。
更新日期:2020-04-06
down
wechat
bug