以铁氰化钾为电子受体的MSBR-MFG集成系统响应机理研究

将双室微生物燃料电池(MFC)的阴极区改造成膜序批式生物反应器(MSBR),从产能和净化的双重角度构建了MSBR-MFC集成系统,以铁氰化钾作电子受体、碳毡作生物阴极和固定填料,采取"厌氧、好氧"交替运行方式处理城市生活污水,考察MSBR-MFC系统的产电能力及污染物去除效果.结果表明,系统在厌氧段加铁氰化钾后,电能输出将大幅提高,最适投加量为30mol·L-1;该条件下好氧段系统最大输出功率密度为893.1 mW·m-3,输出峰电压为570.4mV,电池内阻约300Ω,1个HRT(8h)内累积产电量13.6C;阴极区COD、氨氮、TP去除率分别为90.5%、99%和96.2%,阴阳两极室累积有机物去除容积负荷约2.125kg·m-3·-1,比传统双室MFC提高了约80.8%.     

裂解C9资源研究进展

文章就裂解C9资源综合利用技术的国内外发展进行了概括,从而体现了裂解C9资源发展的趋势以及展望。     

CMF+RO在印染废水回用工程应用

针对二级生化后的达标印染废水含盐量高、色度高等特点,采用CMF+RO对其进行回用,回用率达70%,脱色率为100%,脱盐率为96%～98%,COD去除率为90%、产水硬度<10ppm,产水水质优于自来水,可直接或混合自来水用于高档布料染色.     

Correlation of H<Subscript>2</Subscript>S and COS in the hot coal gas stream and its importance for high temperature desulfurization

Thermodynamic analysis of the correlation of H₂S and COS has been carried out at the temperature range of 400–650 °C at which high temperature desulfurization of coal gas is usually performed. The correlation of the two sulfur species is mainly through the reaction H₂S+CO→COS+H₂. Simulated coal gas with the following composition CO 32.69%, H₂ 39.58%, CO₂ 18.27%, N₂ 8.92% and H₂S 0.47% was used in this study, and the equilibrium concentrations of the two species at different temperatures were calculated. The results of Fe-based sorbents during sulfidation were compared with calculations. It is concluded that the above reaction may reach equilibrium concentration in the presence of the Fe-based sorbents, which means the Fe-based sorbents may effectively catalyze the reaction between H₂S and CO. Because of the correlation of the two sulfur species, both can be effectively removed at high temperatures simultaneously, offering high temperature desulfurization some advantages over low temperature desulfurization processes.     

N,N-二乙基-2（α-萘氧基）丙酰胺的合成和拆分

R-（-）-N,N-二乙基-2（α-萘氧基）丙酰胺是高效旋光性除草剂。它以α-萘酚、氯丙酸和二乙胺为原材料合成,分别用成盐拆分法、定向合成法和优先结晶法制得。通过比较,优先结晶法折分工艺先进,适合于工业化生产。经HPLC检测,光学纯度≥98%。经药效试验表明,R-（-）-N,N-二乙基-2（α-萘氧基）丙酰胺的药效是S-（＋）-N,N-二乙基-2（α-萘氧基）丙酰胺的8倍,是（±）-N,N-二乙基-2（α-萘氧基）丙酰胺的1.7～2倍。     

气相色谱-质谱联用法测定漆膜中邻苯二甲酸酯类化合物

建立了漆膜中邻苯二甲酸酯类化合物的气相色谱-质谱（GC-MS）测定方法。以二氯甲烷为萃取溶剂,用溶剂萃取器萃取漆膜中的邻苯二甲酸酯类化合物,采用气相色谱-质谱联用仪（GC-MS）进行检测。邻苯二甲酸酯的线性相关系数r〉0.999,对实际加标样品的回收率在85%～115%之间,相对标准偏差（RSD）0.8%～6.6%,适合于漆膜中邻苯二甲酸酯类化合物的测定。     

泡沫胶凝法制备轻质钙长石耐火材料的工艺研究

以煅烧矾土、煅烧高岭土、硅灰石、蛋白质发泡剂、明胶、聚乙烯醇、硅溶胶和聚合硫酸铝为原料,采用泡沫胶凝法制备了轻质钙长石材料,主要研究了蛋白质发泡剂加入量、明胶加入量、硅溶胶和聚合硫酸铝的加入时机以及硅溶胶加入量等对泡沫胶凝成型工艺的影响,并分析了烧成后轻质钙长石材料的物相组成、显微结构和性能。结果表明:1)蛋白质发泡剂-水泡沫体系中蛋白质发泡剂的体积分数为15%时,体系的发泡倍数达到最大;每100 mL蛋白质发泡剂-水泡沫体系中加入1.2 g明胶时,泡沫的沉陷率最小,稳定性最好;将聚合硫酸铝促凝剂分散到黏稠泥浆中,制成泡沫泥浆后,在高速搅拌下按1 L泡沫泥浆加入137 mL硅溶胶的比例缓缓加入硅溶胶,搅拌结束15 m in后体系发生胶凝。2)按试验确定的最佳工艺成型并于1 280℃保温0.5 h烧成后的轻质钙长石材料,以钙长石为主晶相,并有少量刚玉相;烧成后的轻质钙长石材料为多孔结构,其气孔多为封闭气孔,且分布较均匀,平均孔径约200μm;烧成后的轻质钙长石材料的性能参数已达到,有的甚至已超过德国的Jm23砖。     

A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure

The weak photon absorption and fast carrier kinetics of graphene limit its application in photodetection. This limitation can be overcome by introducing photosensitive nanostructures to graphene. Herein we report the synthesis of a ZnO nanorod/graphene heterostructure by a facile in situ solution growth method. By combining the attributes of photosensitive ZnO nanorods and highly conductive graphene, we for the first time demonstrate a highly sensitive visible-blind ultraviolet (UV) sensor based on graphene related heterostructure. The photoresponsibility of the UV sensor can reach 22.7 A W(-1), which is over 45,000 fold higher than that of single graphene sheet based photodetectors.     

我国聚丙烯的供需现状及发展前景

目前我国聚丙烯(PP)的总生产能力为1051.0万吨/年,2009年产量为820.5万吨/年,消费量约为1232.3万吨,产不足需,每年都得大量进口。预计到2012年PP的消费量将达到约1400万吨。针对目前我国PP生产状况及存在的问题,提出了今后的发展建议。     

正交试验法洗涤原油污染风砂土的初步研究

利用正交试验设计,选用市售腐植酸钠、自制腐植酸钠和碱水作为洗涤剂,在不同温度和洗涤次数的条件下对落地原油中度污染的土壤进行洗涤,分析洗涤剂种类、洗涤温度和洗涤次数3个因素对洗涤效果的影响。结果表明:洗涤次数对洗涤效果影响最为显著,洗涤剂种类次之,洗涤温度影响最小。试验最优方案为选用市售腐植酸钠,在60℃下洗涤3次(即A3B1C3)。