Photo-degradation organic dyes by Sb-based organic-inorganic hybrid ferroelectrics

The organic-inorganic hybrid halide compounds have emerged as one of the most promising photoelectric material for their superior optoelectronic properties and hold great prospects for renewable energy substitutes and environmental protection as photocatalysis. Here, we report the optical properties of the Sb-based organic-inorganic hybrid ferroelectric materials: pyridine-4-aminium tetrachloroantimonate ((C₅H₇N₂)SbCl₄, sample 1), piperidin-1-aminium tetrachloroantimonate ((C₅H₁₃N₂)SbCl₄, sample 2) and tris(trimethylammonium) nonachlorodiantimonate (((CH₃)₃NH)₃Sb₂Cl₉, sample 3), which are a kind of exploited efficient photocatalysts. Samples 2 and 3 exhibit distinct photoelectric respond, which are mainly ascribed to their minor narrow band-gap compared with sample 1. For the ferroelectrics, the intrinsic of spontaneous polarization of sample 3 at room temperature is favourable for the separation of photogenerated electrons and holes within the photorespond process. Moreover, sample 3 shows the highest efficiency of photo-decomposed Rhodamine B (90.2% within 80 min) and Methyl Orange (MO) (97.4% within 50 min), thanks to the photo-excited electrons and holes promoting the formation of oxidative radical species during the photo-redox progress. These findings prove that the development of a novel Sb-based organic-inorganic hybrid halide compounds with good stability in the degradation of organic dyes paves a way to designing new photocatalyst.     

甲苯降解菌的分离、鉴定及其对甲苯的降解特性

从重庆钢铁集团焦化厂脱酚池车间污泥中分离纯化得到一株能以甲苯为惟一碳源和能源的革兰氏阴性菌。根据生理生化实验结果、菌落特征、菌体形态,初步鉴定为假单孢菌属。菌株的最佳生长条件为：pH7、温度35℃、加入量100mL培养基中加入60μL甲苯、接种量5．0％。考察了菌株对甲苯的降解特性,在甲苯质量浓度为150mg/L时,比降解速率达到0．211h^-1。     

氢化物发生-原子荧光法测定废气中的锡

运用氢化物发生-原子荧光法测定废气中锡的含量,选择了更高效、安全的硝酸-双氧水电热板消解体系对样品进行前处理,调节最佳仪器参数进行测定。研究表明：在0-10μg/L线性范围内,曲线相关系数可以达到0.999 6,方法检出限为0.003μg,加标回收率在92.7%-95.9%之间,RSD≤2.1。氢化物-原子荧光法测定废气中的锡,方法灵敏度高,干扰少,线性范围宽,操作简单、快捷。     

关于日本《环境教育等促进法》修改的研究

日本于2012年10月1日正式颁布了《环境教育等促进法》,此法由2003年颁布的《有关增进环保意愿以及推进环保教育的法律》修改而来,是一部充分调动各个社会主体协同合作,用环境教育开展环境保护工作的法律。通过分析该法多角度分层次的教育措施及特点,借鉴日本多年来环境教育推广经验,对我国加快环境教育立法进程,实现全民环境教育,增强全民节约意识、生态意识、环保意识,全力建设美丽中国有着重大意义。     

都江堰市红色村干沟泥石流活动特征及危险性评估

"5·12"四川汶川大地震导致灾区地质灾害危险性大大增强,严重影响了周边居民的生命财产安全。都江堰市虹口乡红色干沟泥石流灾害隐患点是其中之一。根据泥石流的成因、类型、规模,以及泥石流的活动特征,对泥石流活动进行了危险性评估,指出泥石流防治工程方案应采用以排为主,适当拦挡的原则,建拦挡坝用以消能、调节泥石流流量;建防护堤用以限制泥石流漫流,对居民区进行有效防护。     

Cracking the Achilles’ heel of energy performance contracting projects: the credit risk identification method for clients

ABSTRACT

A credit risk identification model is established to examine the credit status of Energy performance contracting (EPC) project clients (i.e., energy-using companies) in China based on rough set theory. The model is verified with data from 120 listed companies at different times. Study shows that lack of credit is one of the main obstacles to the implementation of EPC projects, and information asymmetry is the main reason for this lack of credit among potential clients in China. The credit risk identification method based on rough set theory can make up for the shortcomings of existing EPC projects in terms of credit risk identification, including redundant information and indicators, and unclear decision rules. Credit risk identification indicators of clients are dynamic. The research results can help energy service companies (ESCOs) determine the credit status of clients, facilitate cooperation between ESCOs and clients, and help explain the various dynamics of clients’ credit risk identification indicators over time.     

含油污泥处理新技术与设备研究

针对辽河油田含油污泥处理现状,经过科研攻关、工艺优选,研制出高效、环保的处理工艺技术和设备,通过该技术的核心设备"三相分离器"分离含油污泥各种杂质,再进行综合利用。结果表明:该项技术与设备对含油污泥处理彻底,综合利用率高,同时具有实用性强、操作性好及良好的环境效益和经济效益。     

石化环境监测LIMS系统中BOD5的组态方法

文章阐述了石化环境监测LIMS系统中BOD5的组态方法。在组态之前,需要根据实际工作中变量的常规取值对BOD5和溶解氧的计算公式进行简化,组态BOD5的LIMS分析方法所需的组态分项包括水样在培养前后的溶解氧浓度等15个,每个分项均应根据数据类型、修约规则、计量单位设置相应的属性,空白样在培养前、后的溶解氧质量浓度用LabWare LIMS的"标准试剂"功能实现组态。BOD5值根据分析方法的计算公式、检出限、测定范围等限定条件编制程序语句计算出最终结果,编程组态后的LIMS分析经反复测试完全正确。     

生物膜填料塔净化有机废气研究

为在国内开展生物化学法净化低浓度有机废气的研究工作,采用国内现有微生物菌种挂膜接种的生物膜填料塔净化低浓度甲苯废气,结果表明,在入口气体甲苯浓度0.183～1.803mg/L及气体流量86.4～190.8L/h（停留时间6.2～13.6s）的实验范围内,增加入口气体甲苯浓度和气体流量,可使甲苯的生化去除量增大,每升体积的生物膜填料对甲苯的生化去除量最大可达157.13mg/h。由实验结果推断,生物膜填料塔对废气中甲苯的净化去除过程属于传质控制过程。对比结果表明,本研究建立的动力学模式对实际过程有很好的适用性,计算值与实验值之间的相关系数R＝0.98。     

巯基棉预富集、气相色谱-原子吸收联用技术测定水样中丁基锡化合物

建立了巯基棉预富集、气相色谱－原子吸收联用技术测定水样中痕量丁基锡化合物的方法。研究了巯基棉预富集丁基锡的环境影响因素和解吸方法。三种形态丁基锡均在pH为中性、低盐度时有最佳吸附。三丁基锡和二丁基锡在所研究水体的预富集测定中均有较佳回收率（92.5％～100.8％）。另外,对巯基棉吸附三种形态丁基锡的动力学特征做了研究。