摘要磁性微生物复合材料是生物吸附材料的一种，既有一般生物吸附材料具有高效、廉价的特点，又有快速分离、方便回收利用的优势，逐渐成为生物吸附材料改良的研究热点。本文选用松木屑为原料，经过硫酸改性后，采用化学共沉淀法制备成磁性木屑，最后用吸附固定的方法将实验室从土壤环境中筛选出的具有Cu2+和新霉素交叉抗性的芽孢杆菌N2（Bacillus sp。），Cu2+和庆大霉素交叉抗性的短波单胞菌S3（Brevundimonas sp。）固定到磁性松木屑上，磁性微生物复合材料是在经冷冻干燥后制得。在整个实验安排中，主要研究了这种材料对水中Cu2+的去除效果。分别考察了 pH、吸附时间、投加量和共存金属离子等因素对吸附效果的影响。利用 SEM、XRD等分析方法对材料进行表征。研究结果如下：87233
（1）当3 <pH<7时，随着pH的升高，生物吸附材料对Cu2+的去除效果变好；而且在60min后吸附已经接近平衡状态；常温的状态下，初始浓度为10mg/L，投加量为2g/L时，原始松木、改性松木、磁性松木、磁性松木N2和磁性松木S3对Cu2+的去除率分别为 62。0%、72。0%、88。8% 、86。3% 、84。5%。
（2）制得的吸附材料对 Cd2+的吸附过程都可以用Freundlich 等温线进行拟合，拟合结果发现，五种材料的相关系数R2均大于0。99，吸附量的理论值与实际值也大致相等。
（3）所得材料经SEM分析后，发现材料磁化后孔径变大；负载微生物之后的磁性材料表面变得光滑，比表面积增大，有利于吸附过程的进行。
毕业论文关键词：磁性吸附材料； Cu2+；微生物；废水处理



Abstract  The magnetic material is a composite of microbial biological adsorbent material, both for the general biological adsorbent material is an efficient, inexpensive features, there are rapid separation, convenient recycling Utilization of becoming biological sorption material modification of research。 This selection of pine sawdust as raw material, after acid modified by chemical coprecipitation into magnetic sawdust, and finally with the adsorption method of fixing the lab screened from the soil environment has Cu2 + and neomycin cross-resistance to Bacillus coli N2 (Bacillus sp。), Cu2 + and cross-resistance to gentamicin shortwave Aeromonas S3 (Brevundimonas sp。) is fixed to the magnetic pine sawdust, the magnetic material is a composite of microorganisms after freeze-drying。 Throughout the experimental arrangement, the main study this material in water Cu2 + removal。 They were investigated pH, adsorption time, the impact of dosage and of metal ions on the adsorption effect。 The use of SEM, XRD analysis and other methods for materials characterization。 The results are as follows:
(1) When 3 <pH <7, the pH rises as the biological adsorbent for Cu2 + removal changed for the better; and in 60min after adsorption has been close to equilibrium state; a state at room temperature, the initial concentration of 10mg / L , dosage of 2g / L, the original pine, modified pine, pine magnetic, magnetic and magnetic pine pine N2 S3 for Cu2 + removal rates were 62。0%, 72。0%, 88。8%, 86。3%, 84。5%。
(2) Adsorbing material prepared for Cd2 + adsorption process can be used to fit Freundlich isotherm fitting was found that the correlation coefficient R2 of Five Materials were greater than 0。99, the theoretical value and the actual value of the amount of adsorption is roughly equal 。
(3)The resulting material after SEM analysis, the material was found after magnetization becomes large aperture; magnetic surface becomes smooth after the microbial load, specific surface area, is conducive to the adsorption process
。
Keywords: magnetic adsorbent material; Cu2 +; microorganism; wastewater treatment


目录
第一章 绪 论   1
1。1铜简介   1 磁性微生物复合材料的制备及其对水体中重金属Cu吸附效果:http://www.youerw.com/huaxue/lunwen_129823.html