PEMFC电堆简易模拟器

当针对PEMFC电堆的能量转换及热特性,立足于PEMFC测试应用。采用电力电子技术实现动态电能及膜片电压生成;跟随物料平衡算法,可实时调节水、温及信号参量拟合,简述了一种PEMFC电堆简易模拟器实现。     

In situ hydrothermal fabrication of visible light-driven g-C3N4/SrTiO3 composite for photocatalytic degradation of TC

Environmental Science and Pollution Research - A series of g-C3N4/SrTiO3 (CN/SrTiO3) composites with the different mass ratio of g-C3N4 were prepared by facile in situ hydrothermal growth method,...     

Manganese-modified biochar for highly efficient sorption of cadmium

Environmental Science and Pollution Research - In this study, corn stalk was modified by manganese (Mn) before (MBC1) and after (MBC2) pyrolysis at different temperatures (400~600 °C)...     

N2O profiles in the enhanced CANON process via long-term N2H4 addition: minimized N2O production and the influence of exogenous N2H4 on N2O sources

Environmental Science and Pollution Research - Production of the greenhouse gas nitrous oxide (N2O) from the completely autotrophic nitrogen removal over nitrite (CANON) process is of growing...     

米泉市大气污染与气象因子变化特征分析

通过对米泉市大气污染状况进行分析,揭示大气污染与其所处的地理特征、气象特征的关系,并对大气污染物TSP、降尘污染与气象因子变化特征进行分析,进一步阐述尘污染是影响米泉市大气环境质量的重要指标。     

市政污泥掺烧对生活垃圾焚烧设施烟气中污染物排放的影响

与生活垃圾协同焚烧是污泥处置中最有前景的处置方式,但其对焚烧烟气污染物排放的影响尚未明确。利用生活垃圾焚烧炉开展生活垃圾协同处置市政污泥的试验,研究掺烧5%、10%和15%的市政污泥时焚烧烟气中酸性气体、烟尘、重金属和二噁英等的排放特征。结果表明:与单独焚烧生活垃圾的对照组相比,在各掺烧比例下,烟气中SO_2、HCl、NO_x及烟尘有一定程度的增加,但均未超过GB18485—2014《生活垃圾焚烧污染控制标准》限值;Cu、Hg排放质量浓度明显下降,Cr、Cd波动下降,Pb在高掺烧比时仍远低于限值,Ni增长幅度小于15%;二噁英总量升高,但仍符合标准限值。因此,在掺烧比例不超过15%的情况下,焚烧烟气中污染物排放仍在安全可控范围。     

《环境监测 分析方法标准制修订技术导则》(HJ 168—2010)对土壤环境监测标准制修订适用性探讨

针对土壤环境监测的复杂性和特殊性,从空白试验、检出限、方法验证、质量控制和标准文本等方面,指出了《环境监测分析方法标准制修订技术导则》《HJ 168—2010》对土壤环境监测标准制修订工作的适用性和执行中存在的问题。提出,为保证土壤标准制修订质量和标准执行质量,应研究适宜土壤监测方法标准的质量控制指标体系和评价体系,及时修订《HJ 168—2010》或发布补充要求;对现有土壤监测方法标准进行技术评估,加强对于土壤标准制修订工作的指导和监管。     

Nutrients Availability Shapes Fungal Community Composition and Diversity in the Rare Earth Mine Tailings of Southern Jiangxi,China

Russian Journal of Ecology - The present study characterized the nutrients availability of three rare earth tailings deserted in different time stages in Southern Jiangxi of China, and revealed the...     

Identifying key areas of ecosystem services potential to improve ecological management in Chongqing City,southwest China

Because natural ecosystems and ecosystem services (ES) are both critical to the well-being of humankind, it is important to understand their relationships and congruence for conservation planning. Spatial conservation planning is required to set focused preservation priorities and to assess future ecological implications. This study uses the combined measures of ES models and ES potential to estimate and analyze all four groups of ecosystem services to generate opportunities to maximize ecosystem services. Subsequently, we identify the key areas of conservation priorities as future forestation and conservation hotspot zones to improve the ecological management in Chongqing City, located in the upper reaches of the Three Gorges Reservoir Area, China. Results show that ecosystem services potential is extremely obvious. Compared to ecosystem services from 2000, we determined that soil conservation could be increased by 59.11%, carbon sequestration by 129.51%, water flow regulation by 83.42%, and water purification by 84.42%. According to our prioritization results, approximately 48% of area converted to forests exhibited high improvements in all ecosystem services (categorized as hotspot-1, hotspot-2, and hotspot-3). The hotspots identified in this study can be used as an excellent surrogate for evaluation ecological engineering benefits and can be effectively applied in improving ecological management planning.     

分子筛生产废水中悬浮物的絮凝与回用

对分子筛生产废水进行了絮凝沉降分离试验，确定了絮凝剂、助凝剂及絮凝敢分离条件。试验结果表明，絮凝沉降所得到的絮凝物料的化学组成、结构、性能与絮凝前原废水中的悬浮物基本一致，可返回原生产工序中使用。