葫芦岛市新策力克畜禽养殖污染难题

改革开放以来,葫芦岛市的畜禽养殖业得以迅猛发展,其环境污染问题也日益凸显。大多数规模化畜禽养殖场没有污染治理设施,畜禽粪污未经任何处理即就地排放,水体和空气质量都受到了不同程度的污染。     

Potential particulate pollution derived from UV-induced degradation of odorous dimethyl sulfide

UV-induced degradation of odorous dimethyl sulfide (DMS) was carried out in a static White cell chamber with UV irradiation. The combination of in situ Fourier transform infrared (FT-IR) spectrometer, gas chromatograph-mass spectrometer (GC-MS), wide-range particle spectrometer (WPS) technique, filter sampling and ion chromatographic (IC) analysis was used to monitor the gaseous and potential particulate products. During 240 min of UV irradiation, the degradation e ciency of DMS attained 20.9%, and partially oxidized sulfur-containing gaseous products, such as sulfur dioxide (SO2), carbonyl sulfide (OCS), dimethyl sulfoxide (DMSO), dimethyl sulfone (DMSO2) and dimethyl disulfide (DMDS) were identified by in situ FT-IR and GC-MS analysis, respectively. Accompanying with the oxidation of DMS, suspended particles were directly detected to be formed by WPS techniques. These particles were measured mainly in the size range of accumulation mode, and increased their count median diameter throughout the whole removal process. IC analysis of the filter samples revealed that methanesulfonic acid (MSA), sulfuric acid (H2SO4) and other unidentified chemicals accounted for the major non-refractory compositions of these particles. Based on products analysis and possible intermediates formed, the degradation pathways of DMS were proposed as the combination of the O(1D)- and the OH- initiated oxidation mechanisms. A plausible formation mechanism of the suspended particles was also analyzed. It is concluded that UV-induced degradation of odorous DMS is potentially a source of particulate pollutants in the atmosphere.     

Antimicrobial activity of thin metallic silver flakes, waste products of a manufacturing process

The aim of the research was to develop new products and processes from a manufacturing waste from an Italian metallurgic company. The company produced thin silver metallic films and the production scraps were silver flakes. The possibility to use the silver flakes in water disinfection processes was studied. The antimicrobial activity of the flakes was investigated in batch using Escherichia coli as Gram-negative microorganism model. The flakes did not show any antimicrobial activity, so they were activated with two different processes: thermal activation in reducing atmosphere and chemical activation, obtaining, respectively, reduced flakes (RF) and chemical flakes (CF). The flakes, activated with either treatment, showed antimicrobial activity against E. coli. The kill rate was dependent on the type of activated flakes. The chemical flakes were more efficient than reduced flakes. The kill rate determined for 1 g of CF, 1.0 ± 0.2 min⁻¹, was greater than the kill rate determined for 1 g of RF, 0.069 ± 0.004 min⁻¹. This was confirmed also by the minimum inhibitory concentration values. It was demonstrated that the antimicrobial capability was dependent on flakes amount and on the type of aqueous medium. Furthermore, the flakes maintained their properties also when used a second time. Finally, the antimicrobial activities of flakes were tested in an effluent of a wastewater treatment plant where a variety of heterotrophic bacteria were present.     

福禄吉祥与生物安全

再过十来天就是春节了!受几千年传统文化的影响,中国人过年总爱与吉祥、如意和福禄之类的祝福挂钩。文玩市场应该说是许多人在春节前乃至春节期间十分乐意光顾的地方。但最近有媒体报道说,在北京的文玩市场,一直以来很受顾客青睐的手捻儿葫芦(寓意福禄)几乎全是美国品种。     

企业怎能点“绿”成金——读《市场营销3.0:从产品到客户再到心灵》有感

人们常讲,企业可持续发展利己利人。企业点"绿"成金,既可保护环境也可成就自己。这道理听起来很轻松悦耳,但真要落到实处往往困难重重,因为这涉及到市场分析、产品设计、生产管理、市场营销等复杂环节。有些环节的微观机理是不容易陈述清楚的。市场营销便是如此:为何消费者青睐绿色产品?为何企业要在消费群体中塑造负责任的环保形象?传统的市场营销理论并没有对此给出明确解释。营销之父菲利普·科特勒的最新力作《市场营销3.0:从企业到     

廊坊市环保产业发展现状与市场需求分析

针对目前廊坊市环保产业发展现状及存在的问题,以及今后一段时间内环保产品市场的需求进行了分析,并提出了一些建议。     

室内空气质量评价模型探讨

文章按时间顺序介绍了六个评价室内空气质量的数学模型。它们分别是歌舞厅空气质量指标模型、通风条件下室内VOC普适模型、居民住宅甲醛浓度预测模型、办公室甲醛浓度预测模型、通风条件下室内空气品质模型以及多孔建材中VOC扩散系数两尺度模型。针对每一个模型,文章都按照相应的适用条件、建模过程和应用效果进行了综述。目的是总结该领域的最新进展,为当下的检测工作与将来进一步的研究提供参考资料。     

Two-step accelerated mineral carbonation and decomposition analysis for the reduction of CO2 emission in the eco-industrial parks

Carbon dioxide（CO2） emissions are a leading contributor to the negative effects of global warming. Globally, research has focused on effective means of reducing and mitigating CO2 emissions. In this study, we examined the efficacy of eco-industrial parks（EIPs） and accelerated mineral carbonation techniques in reducing CO2 emissions in South Korea.First, we used Logarithmic Mean Divisia Index（LMDI） analysis to determine the trends in carbon production and mitigation at the existing EIPs. We found that, although CO2 was generated as byproducts and wastes of production at these EIPs, improved energy intensity effects occurred at all EIPs, and we strongly believe that EIPs are a strong alternative to traditional industrial complexes for reducing net carbon emissions. We also examined the optimal conditions for using accelerated mineral carbonation to dispose of hazardous fly ash produced through the incineration of municipal solid wastes at these EIPs. We determined that this technique most efficiently sequestered CO2 when micro-bubbling, low flow rate inlet gas, and ammonia additives were employed.     

再制造产品“以旧换再”推广试点企业征集工作启动

按照《循环经济发展战略及近期行动计划》（国发[2013]5号）的要求,为支持再制造产品的推广使用,促进再制造旧件回收,扩大再制造产品市场份额,发改委、财政部、工业和信息化部、商务部、质检总局开展了再制造产品“以旧换再”试点工作.     

工信部发布第四批《再制造产品目录》

正中华人民共和国工业和信息化部公告2014年第50号为推动再制造产业健康有序发展,加强再制造行业管理,确保再制造产品质量,引导再制造产品消费,根据《再制造产品认定管理暂行办法》(工信部节[2010]303号)及《再制造产品认定实施指南》(工信厅节[2010]192号),经过现场审核、产品检验与综合技术评定,并经专家论证,天津光电久远科技有限公司、浙江金龙电机股份有限公司等7家企业3大类26种产品符合再制造产品认定相关要求,列入《再制造产品目录(第四批)》,现予公告。