氧气和水蒸气对球状活性炭吸附SO2能力的影响

研究了Ｏ２和Ｈ２Ｏ对沥青基球状活性炭（ＰＳＡＣ）吸附ＳＯ２能力的影响。结果表明,Ｏ２和ＳＯ２占据不同的活性中心,而Ｈ２Ｏ和ＳＯ２占据同一类活性中心,且ＳＯ２与活性中心的结合能力比Ｈ２Ｏ强得多。Ｏ２或Ｈ２Ｏ均能提高ＰＳＡＣ对ＳＯ２的吸附能力。ＳＯ２吸附量的增加来源于ＳＯ２的化学吸附量。     

脱色酶和优势菌混合固定化降解染料的研究

本文对分离到的脱色优势菌ＤＮ１的脱色酶特性进行了研究,将脱色酶与苯胺降解菌混合固定化处理染料废水,结果表明,脱色酶在厌氧条件下对染料的脱色效果好,最适条件为３７℃,ｐＨ７．０;固定化酶相比粗酶液有更高的活性,对温度、ｐＨ、氧的要求范围较宽;混合固定化降解染料,脱色率及苯胺降解率分别大于８０％和９０％。     

Comparisons of Genetic Diversity in the Endangered Adenophora lobophylla and Its Widespread Congener, A. potaninii

Abstract: Starch-gel electrophoresis was used to examine the levels and distribution of genetic diversity in two Adenophora species: the narrow endangered Adenophora lobophylla and its widespread congener, A. potaninii . Based on allozyme variation at 18 putative loci, we measured high levels of genetic variability both in the endangered and the widespread species, with 83.3% of the loci being polymorphic. The mean expected heterozygosity within populations (   H _ep  ) and within species (   H _es  ) were 0.234 and 0.244 for A. potaninii and were as high as 0.210 and 0.211 for A. lobophylla . There was higher differentiation among populations in A. potaninii (   F _ST = 0.155) than in A. lobophylla (   F _ST = 0.071). The high levels of genetic diversity in the present allozyme survey are consistent with the morphological variation observed in these species and may be attributed to high outcrossing rates in the Adenophora species. In addition, A. lobophylla was identified as a distinct species on the basis of Nei's genetic distances and thus should be given a high priority for protection. It is noteworthy that the endangered A. lobophylla maintains much higher genetic diversity than most endemic or narrowly distributed plant species in spite of its restricted distribution. We hypothesize that A. lobophylla has become endangered for ecological and stochastic reasons, including habitat destruction or environmental changes, mud slides, and human disturbance such as grazing and mowing. Consequently, habitat protection is of particular importance for conserving this endangered species.     

海底铁锰氧化还原过程的模拟研究

本文用室内海水-沉积物平衡箱研究了沉积物间隙水中铁、锰的垂直变化分布和随时间变化的分布,Fe~(2+)随深度、时间的变化幅度大,在六个月的实验期内均是如此,而Mn~(2+)在放置三个月后即趋于稳定;Fe~(2+),Mn~(2+)产生的宏观经验动力学表明:Fe~(2+)受pH影响远比Mn~(2+)大,且随着深度的增加更为明显,Fe~(2+)在较下层产生速率大,而Mn~(2+)反之;Fe~(2+)的扩散转移是上覆海水向沉积物中转移,扩散量为-60.7ug/m~2d,Nn~(2+)转移方向相反,扩散量为1746.2ug/m~2.d。     

Optimization of bio-drying of kitchen waste: inoculation,initial moisture content and bulking agents

Journal of Material Cycles and Waste Management - Bio-drying has been proved to be a promising method for treatment of MSW (municipal solid waste) and sewage sludge due to its high energy...     

活性污泥工艺中加代谢解偶联剂降低污泥产率的研究

2,4,5-三氯苯酚（TCP）作为代谢解偶联剂投加到连续曝气分批培养的活性污泥工艺中,在30d的运行期间,TCP质量浓度为2．0mg／L和4．0mg／L的污泥产率分别比对照反应下降了约25％和50％,而基质的去除率及出水的氮和磷浓度均未受很大影响,污泥的沉降性能也未受影响。镜检发现,30d运行后对照实验的反应器中仍有丝状菌,而投加TCP反应器的污泥中几乎未发现丝状菌的存在。应用TCP作为代谢解偶联剂投加到活性污泥工艺中可减少剩余污泥的产量。     

浅议宣传培训在推动农村再生资源回收利用中的作用

介绍我国开展农村再生资源回收利用的背景,以及宣传培训在推动农村再生资源回收利用中的重要作用。阐述农村再生资源回收利用宣传培训的内容和方式,以及培养再生资源回收利用意识的途径。提出应加大宣传培训工作力度,丰富宣传培训内容并采取多样化的形式,推动相关理念和知识的传播,逐渐形成农村再生资源回收利用的长效机制。     

高活性萘降解细菌Hydrogenophaga Palleronii LHJ38的研究

为了研究微生物对多环芳烃的降解和转化规律,以萘作为研究对象,从餐厨油烟污染土壤中筛选到一株萘降解活性较高的细菌菌株,经菌种鉴定,定名为帕氏氢噬胞菌(H ydrogenophaga Palleronii)LH J38。测定了该菌的生长曲线和萘降解曲线,建立了菌株对萘的降解活性的定量测定方法,并研究了其最适生长条件。结果表明,在28℃、初始pH6.6、碳氮摩尔比为4的最适培养条件下,LH J38对初始质量浓度为2 000m g/L的萘在96h内的降解率可达98%以上;处于对数生长期的LH J38对萘的降解活性可达47.3nm o l/(m g.m in)。     

Diopside-based glass-ceramics from MSW fly ash and bottom ash

By utilising MSW fly ash from the Shanghai Yuqiao municipal solid waste (MSW) incineration plant as the main raw material, diopside-based glass-ceramics were successfully synthesized in the laboratory by combining SiO(2), MgO and Al(2)O(3) or bottom ash as conditioner of the chemical compositions and TiO(2) as the nucleation agent. The optimum procedure for the glass-ceramics is as follows: melting at 1500 degrees C for 30 min, nucleating at 730 degrees C for 90 min, and crystallization at 880 degrees C for 10h. It has been shown that the diopside-based glass-ceramics made from MSW fly ash have a strong fixing capacity for heavy metals such as lead (Pb), chromium (Cr), cadmium (Cd) etc.