利用联醇装置废催化剂生产氯化亚铜和氧化锌

叙述了用化肥厂联产甲醇装置的废催化剂生产氯化亚铜和氧化锌的原理、工艺流程和工艺条件,氯化亚铜和氧化锌的收率分别达到95%和92%.     

挥发性有机化合物催化氧化催化剂的制备和性能研究

研制出用于催化氧化废气中挥发性有机化合物（ＶＯＣ）的非贵金属氧化物催化剂,在固定床上,处理含醋酸丁酯的模拟气,考察了空速、浓度等因素对催化剂活性的影响及催化剂的耐热性能,当空速为５０００ｈ＾－１,进气温度为２２０℃、醋酸丁酯质量浓度为２．４～５．８ｇ／ｍ＾２时,醋酸丁酯的去除率〉９８％,而且该催化剂人具有较高的热稳定性。     

水中直接染料的多相催化脱色的试验条件研究

实验结果表明,金属氧化物催化剂与活性炭和过氧化氢配合使用,对直接染料有很高的催化脱色率。反应进行迅速,以直接耐酸大红4BS和直接红棕RN为代表的正交实验表明影响催化脱色作用的主要因素为催化剂,其次是活性炭和过氧化氢。直接深蓝L－3RB,直接铜蓝2R,直接黑L－3BQ,直接耐晒黄RS,直接青莲RB等的最大脱色率为92.9%-99.5%。     

Fenton试剂预处理化工综合废水的研究

以化学工业园区废水为研究对象初步研究了Fenton试剂预处理化工综合废水时各影响因子的作用机制,通过正交实验确定了Fenton反应的最佳操作条件为：反应时间70 min,硫酸亚铁投加量为2.6 mmol/L,温度为40℃,初始pH3.5,二价铁离子和过氧化氢的摩尔比为1∶8时,COD的去除率可达到60%以上,B/C值可...     

微波诱导催化剂Fe2O3／沸石氧化处理印染废水

以自制改性沸石为催化剂,通过微波诱导氧化技术,对活性嫩黄模拟废水进行氧化处理。采用尿素均匀沉淀包裹法制备Fe2O3／沸石微波诱导催化剂。利用SEM、XRD、IR等分析手段分别对催化剂的表面形态、物相结构等特性进行表征。实验考察了催化剂用量、微波辐射时间、微波辐射功率对活性嫩黄废水的降解效果。结果表明：在催化剂用量3g／L、微波功率900W、辐射时间4min的条件下,对50mg／L活性嫩黄的处理率达到97％。     

低频超声协同Fe-Ni-Mn／Al2O3催化降解酸性绿B的研究

采用低频超声与Fe-Ni-Mn／Al2O3催化剂协同降解偶氮染料酸性绿B模拟废水,考察染料初始浓度和pH值、催化剂、饱和气体及H2O2等因素对酸性绿B降解效果的影响,结果表明：催化剂Fe-Ni-Mn／Al2O3与低频超声存在协同效应,催化剂的最佳投加量为6g／L;酸性条件有利于染料的超声降解,当pH=3．8时,可取得最佳的降解效果;酸性绿B降解率随初始浓度的增大而降低,其优化初始浓度为100mg／L,此外,在反应体系中鼓入饱和气体也可促进酸性B的降解,且影响顺序为混合气体（air＋Ar）〉氧气〉氩气;在反应过程中投加H2O2有利于染料降解率的提高。在优化实验条件下降解150min,酸性绿B色度去除率达到91．4％。     

低频超声协同Fe-Ni-Mn/Al2O3催化降解酸性绿B的研究

采用低频超声与Fe-Ni-Mn/Al₂O₃催化剂协同降解偶氮染料酸性绿B模拟废水,考察染料初始浓度和pH值、催化剂、饱和气体及H₂O₂等因素对酸性绿B降解效果的影响, 结果表明：催化剂Fe-Ni-Mn/Al₂O₃与低频超声存在协同效应,催化剂的最佳投加量为6 g/L;酸性条件有利于染料的超声降解,当pH=3.8时, 可取得最佳的降解效果; 酸性绿B降解率随初始浓度的增大而降低,其优化初始浓度为100 mg/L,此外,在反应体系中鼓入饱和气体也可促进酸性B的降解,且影响顺序为混合气体(air+Ar)＞氧气＞氩气;在反应过程中投加H₂O₂有利于染料降解率的提高。在优化实验条件下降解150 min,酸性绿B色度去除率达到91.4%。     

Norway's role in international collaboration towards rehabilitation of Andreeva Bay

Andreeva Bay is one of the largest and most hazardous nuclear legacy sites in northwest Russia. The site is the location of large amounts of Spent Nuclear Fuel (SNF) and radioactive wastes and the risks associated with the site have precipitated an extensive international collaborative effort towards securing and rehabilitating the site. Given the location and proximity of the site, Norway has and continues to contribute in a number of ways towards this effort. Norway's activities in relation to rehabilitative efforts at Andreeva Bay are focused on both infrastructural and remediative initiatives as well as regulatory collaboration with Russia towards ensuring effective and safe operations during handling and removal of SNF and radioactive materials. This article describes Norway's role within international efforts in the context of the rehabilitation of Andreeva Bay and outlines previous activities and Norway's future direction with respect to the site.     

Radioecological consequences of a potential accident during transport of spent nuclear fuel along an Arctic coastline

This article presents results pertaining to a risk assessment of the potential consequences of a hypothetical accident occurring during the transportation by ship of spent nuclear fuel (SNF) along an Arctic coastline. The findings are based on modelling of potential releases of radionuclides, radionuclide transport and uptake in the marine environment. Modelling work has been done using a revised box model developed at the Norwegian Radiation Protection Authority. Evaluation of the radioecological consequences of a potential accident in the southern part of the Norwegian Current has been made on the basis of calculated collective dose to man, individual doses for the critical group, concentrations of radionuclides in seafood and doses to marine organisms. The results of the calculations indicate a large variability in the investigated parameters above mentioned. On the basis of the calculated parameters the maximum total activity (“accepted accident activity”) in the ship, when the parameters that describe the consequences after the examined potential accident are still in agreement with the recommendations and criterions for protection of the human population and the environment, has been evaluated.     

一株碱性脱除硫酸盐细菌的筛选及其生长特性研究

生化铁碱溶液催化法气体脱硫方法（简称DDS法）具有良好脱硫效果,但是DDS溶液在脱硫后会导致脱硫能力降低,为了达到使DDS脱硫残液得到再生的目的,从自然环境中筛选能够使DDS脱硫残液得到再生的微生物并对其进行了研究。通过富集培养及纯化,从黑龙江省五大连池火山口附近土样中筛选出一株碱性条件下脱除硫酸盐的菌株WT-1。对该菌株的生长曲线进行了测定,培养4～6 h菌株进入对数期,20 h左右到达稳定期。并研究了温度、pH值和摇床转速对其生长特性和活性的影响,结果表明,该菌株的最适生长条件为：温度35～45℃,pH值8,摇床转速120 r/min。同时,脱硫试验表明WT-1确实具有脱除硫酸盐的能力。