Application of an immobilized microbial consortium for the treatment of pharmaceutical wastewater: B

来源 :中国化学工程学报(英文版) | 被引量 : 0次 | 上传用户:sihuajian
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In the present investigation,a microbial consortium consisting of four bacterial strains was selected for the treatment of pharmaceutical industry wastewater.The consortium was immobilized on a natural support matrix-Luffa and used for the treatment of real-time pharmaceutical wastewater in batch and continuous processes.The batch process was carried out to optimize the culture conditions and monitor the enzymatic activity.An array of enzymes such as alcohol dehydrogenase,aldehyde dehydrogenase,monooxygenase,catechol 2,3-dioxygenase and hydroquinol 1,2-dioxygenase were produced by the consortium.The kinetics of the degradation in the batch process was analyzed and it was noted to be a first-order reaction.For the continuous study,an aerobic fixed-film bioreactor (AFFBR) was utilized for a period of 61 days with variable hydraulic retention time (HRT) and organic loading rate (OLR).The immobilized microbes treated the wastewater by reducing the COD,phenolic contaminants and suspended solids.The OLR ranged between (0.56 ± 0.05) kg COD·m-3 d-1 to 3.35 kg COD·m-3·d-1 and the system achieved an average reduction of 96.8% of COD,92.6% of phenolic compounds and 95.2% of suspended solids.Kinetics of the continuous process was interpreted by three different models,where the modified Stover Kincannon model and the Grau second-order model proved to be best fit for the degradation reaction with the constant for saturation value,KL being 95.12 g· L-1·d-1,the constant for maximum utilization of the substrate Umax being 90.01 g·L-1 d-1 and substrate removal constant KY was 1.074 d-1 for both the models.GC-MS analysis confirmed that most of the organic contaminants were degraded into innocuous metabolites.
其他文献
2009年和2010年,我跟随邹院士前后两次到平泉县城参加调研和座谈研讨会,这是令我印象较深的事情。第一次去平泉县,当时是为其城市建设支招,他们请邹院士去做规划咨询和座谈。会前,我们实地考察了平泉县的城市建设,尤其是食用菌和活性炭园区和南大街历史文化保护街区。但在会上,听到的只有关于平泉城市道路交通体系、城市设计、城市公共安全、城市照明、数字城市等诸多专项规划汇报。邹院士说,
期刊
本文结合医院在廉洁文化建设的实践,总结有效做法,探讨公立医疗机构廉洁文化建设的有效模式.
(一.)概况rn英谈古寨位于河北省邢台市路罗镇,(东)距邢台市区70km,西距太行山32km,(是)以路姓为主的血缘型村落.古寨以山为屏,(以)水为阻,有着完善的防御系统.英谈古寨(是)第
期刊
第九届《姑苏之秋》版画邀请展是由苏州市文广局、苏州市美协发起,并由江苏文化厅,中国美协版画艺委会,苏州市委宣传部,苏州市文广局,苏州市文联主办的难得的一次展示活动,
最理想的家莫过于自己设计装修的家,娜娜就有这个福分和天分。当初娜娜买下了同一层的两套房子,一套和父母一起住,一套准备结婚的时候做新房。两套房子门对门,娜娜没事的时候
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
许多初识的朋友常向我提出:“你为什么对黄鲇鱼情有独钟?”此时的我总无法一下子说出个所以然来。但略加思索,还是要说一些关于自己画鱼的话。在我们生活的周围,诸如绘画、
北京老城受社会历史发展阶段、历史文化保护政策以及北京城市化的高速发展的影响,城市贫富分离的二元属性日趋明显,尤其是位于城市中心的历史居住区,北京老城胡同片区普遍存
对C-Mn-Si-V系高强度双相钢进行连续退火处理,分别研究了均热温度、缓冷温度、快冷温度和过时效温度对试验钢显微组织和力学性能的影响。结果表明,当均热温度为780~840℃,缓
Optimal precursor perturbations of El Ni?o in the Zebiak-Cane model were explored for three different cost functions. For the different characteristics of the e