Photoelectrochemical technology for solar fuel generation,from single photoelectrodes to unassisted cells: a review

Environmental Chemistry Letters - Photoelectrochemical solar fuel generation requires a highly integrated technology for converting solar energy into chemical fuels. Dihydrogen (H2) and...     

Preparation and performance characterization of a new dust suppressant with a cross-linked network structure for use in open-pit coal mines

Environmental Science and Pollution Research - In an effort to control dust pollution in open-air environments such as pit coal mines and coal transportation systems, a new dust suppressant with a...     

Heterogeneous impacts of environmental regulation on foreign direct investment: do environmental regulation affect FDI decisions?

Environmental Science and Pollution Research - The industry selection effect occurring from the impact of environmental regulation on foreign direct investment (FDI) in China is heterogeneous....     

Influence of different inoculation densities of black soldier fly larvae (Hermetia illucens) on heavy metal immobilization in swine manure

The disposal of organic waste by the biocomposting of black soldier fly larvae (BSFL) has drawn broad attention. However, the discrepancies in heavy metal immobilization between BSFL biocomposting with different inoculation densities and aerobic composting need to be further researched. In this study, BSFL with inoculation densities of 0.08%, 0.24% and 0.40% was added to swine manure to investigate its influence on heavy metal bioaccumulation and bioavailability. The physicochemical properties, BSFL growth performance and amino acid contents were measured. The results showed that the germination index, total prepupal yield and bioavailable fraction removal rate (%) of Cr and Pb at an inoculation density of 0.40% of BSFL were the highest among all of the BSFL biocomposting groups. Although the bioaccumulation factor and heavy metal (Cd, Cr, Cu and Zn) concentrations of the BSFL body from swine manure with inoculation densities of 0.24% and 0.40% of BSFL were similar, the BSFL inoculation density of 0.40% had the best absorption effect on these heavy metals in terms of total prepupal yield. Therefore, this study provides a basis for exploring the optimal inoculation density of BSFL biocomposting to reduce the harmful effects of heavy metals in swine manure.

     

Fractional diffusion model for emission and adsorption prediction of TXIB from wallpaper

Environmental Science and Pollution Research - Mercury injection test shows that wallpaper is a porous building material with a complex fractal mass transfer channel. Therefore, fractional...     

高温蒸汽灭菌处理技术处置医疗废物工艺设计

高温蒸汽灭菌处理技术是近几年开发的新型医疗废物处置技术,并在全国部分地区得到了应用和推广。以西北某市医疗废物处置工程中高温蒸汽灭菌处理技术的应用为例,通过对其工程原理、系统组成、工艺流程等的分析论证共同探讨其工程原理和性能特点,为今后在工程实际中的运用提供参考。     

贵阳和万山地区部分蔬菜中的重金属含量及其健康风险

以贵州省贵阳市和万山地区为例,对购自当地自由市场的部分蔬菜中的重金属Cd、Hg、Pb、Mn、As的含量进行了测定,并以国际放射防护委员会(ICRP,International Commissionon Radiological Protection)给出的限定值为标准,对某些重金属含量超标的蔬菜进行了健康风险评价.结果表明:除个别蔬菜的As和Mn外,万山地区蔬菜中的重金属含量均明显高于贵阳地区;两地蔬菜中的As、Pb含量均低于国家限定值(GB4810-1994、GB14935-1994),而部分蔬菜中的Cd、Hg含量均明显超出国家限定值(GB15201-1994、GB2762-1994).风险评价结果表明贵阳和万山两地的蔬菜可能存在重金属Cd、Hg、Pb的中、轻度污染;存在Cd污染的蔬菜对人体的年致癌风险为3.40×10-7·a-1,非致癌物Hg和Pb对人体的总健康风险分别为3.63×10-7·a-1、1.69×10-6·a-1,均低于ICRP标准.     

节能型焦化污水生物脱氮新工艺的生产性试验研究

采用节能型生物脱氮新工艺对黑龙江某焦化厂的污水处理站进行生产性试验研究,结果表明:处理后出水达到GB8978-1996《污水综合排放标准》一级,并可回用于熄焦。该工艺适合推广应用于焦化污水、垃圾渗滤液、养殖、化肥等高含氮有机污水的处理。     

标准化作业确保人机两安全

通过研究作业过程 ,编制其标准化作业程序 ,使人、机、料、环 4个环节和谐统一 ,作业程序化、规范化。达到预防事故的目地 ,确保安全生产     

环氧化合物分子结构与致变活性的关系

由化学物质毒性效应登录(RTECS)1998年光盘系统检索获得86种环氧化合物对鼠沙门氏菌致变活性数据.应用主成分分析法从11种分子描述符中选择出5种对致变活性有明显影响的描述符:碳原子数,苯环数,氢原子数,烷基数和氧原子数.通过样本学习集训练并优化神经网络结构,建模分类预报:对于86个样本,低和高2类活性,正确分类率达到92%.结果表明:3～4个骈接苯环的环氧化物的特殊结构具有很强的致变活性.