由硫酸亚铁（绿矾）制取还原铁粉的工艺研究

提出了一种新的绿矾综合利用的途径,即绿矾经碳酸盐转化,然后采用无烟煤作还原剂,CaCO3为添加剂,进行高温还原焙烧制取还原铁粉.先将绿矾用水溶解,用理论量1.2倍的（NH4）2CO3将FeSO4转化为FeCO3,FeCO3焙烧的最佳条件是FeCO3∶无烟煤∶CaCO3为100∶60∶8,焙烧温度为1000℃,焙烧时间为4.5 h.粗还原铁粉化学成分除C含量较高外,符合国家有关标准,900℃左右经氢气精还原1 h所得精还原铁粉化学成分的各项指标,均达到或优于国家有关标准的要求.     

邯钢炼铁系统粉尘污染防治技术分析

重点介绍了邯钢新建2000m^3高炉（7^#高炉）出铁场和槽下上料系统粉尘污染治理方面的成功经验，并对应用电除尘器处理粉尘的技术进行了简要分析。     

零价铁法处理含EDTA-Cu(Ⅱ)废水

为了探索含络合铜电镀废水的处理新方法,以废铁屑为材料,研究其去除EDTA-Cu(Ⅱ)的有效性和作用机制。对铁屑进行XRD表征的结果表明,铁屑中含有零价铁和少量碳,实验发现,铁屑对Cu(Ⅱ)和EDTA能同步去除,90 min的去除率分别达到93.51%,52.55%,且降低了体系的生物毒性,提高了生物降解性。对反应机制进行探讨,结果表明铁屑以直接还原、沉淀吸附和微电解作用实现对EDTA-Cu(Ⅱ)的有效去除。     

Aniline removal by Photocatalytic reaction of iron(iii) mediated with dissolved organic matter

When light (> 370 nm) was allowed to interact with an aqueous solution containing dissolved organic matter (DOM) and Fe(III), removal of aniline (AN) was observed. This was due to the photocatalytic reaction of Fe(III) mediated by DOM. Syringic acid (SYA) and humic acid (HA) were used as DOM in the present study. The ¹⁵N‐NMR spectrum of the product mixture from the light irradiation of the SYA/Fe(III) system demonstrated that AN was covalently bound to SYA. The kinetics of AN removal were, therefore, interpreted by assuming covalent binding between DOM and AN. The amounts of covalent binding sites and the apparent second‐order rate constants could be evaluated, and the amounts of covalent binding sites decreased with the increases of the concentration of DOM. This is attributed that the polymerization of DOM by the photo‐oxidation competed with the covalent binding between AN and DOM.     

ZVI强化厌氧处理高浓度颜料废水

通过向两相厌氧反应器产甲烷段添加零价铁,考察零价铁对厌氧产甲烷反应器(R1)处理颜料废水效果的强化作用。与未添加零价铁的传统产甲烷反应器(R2)相比,R1的COD去除率和甲烷产量分别提高了27%和53%。在进水负荷发生变化的情况下,R1的COD去除率仍保持在69%,而传统反应器只有31%.因此,R1具有良好的抗冲击负荷。     

钢铁企业经营困难废钢行情依然脆弱

结合国内外宏观经济形势走势，以及近日分别在中天、马钢举行的废钢网络信息会，对现阶段钢铁工业发展状况，包括钢材市场走势、废钢和冶金炉料行情以及废钢经营企业的处境等问题进行分析探讨。     

Investigation of a pyrophoric iron fire in a Visbreaker fractionation column provides better cleaning work procedure

An unexpected ignition of pyrophoric iron sulphide deposits took place in the fractionator of a Visbreaker unit. The distillation column had been chemically decontaminated prior to the event. The investigation of the event leads to conclusions concerning chemical decontamination limitations in vessels in coking service. Based on the lessons learned from this case, a prioritization of manual vessel cleaning works in coking service is proposed.     

Iron and Zinc status in soils, water and staple food cultivars in Itakpe, Kogi State of Nigeria

The levels of iron (Fe) and zinc (Zn) were quantitatively determined in soil and water samples as well as in staple food cultivars in Itakpe, Nigeria's major iron mining town. The survey was conducted to establish a baseline pollution index for Fe and Zn in the Itakpe environment and to evaluate the role of foods as an exogenous source of these metals among the inhabitants. Exceedingly high levels of both metals characterized the staple food cultivars in the town.     

Performance of bimetallic nanoscale zero-valent iron particles for removal of oxytetracycline

In this study, bimetallic nanoscale zero-valent iron particles(nZVI), including copper/nanoscale zero-valent iron particles(Cu/nZVI) and nickel/nanoscale zero-valent iron particles(Ni/nZVI), were synthesized by one-step liquid-phase reduction and applied for oxytetracycline(OTC) removal. The effects of contact time and initial p H on the removal efficiency were studied. The as-prepared nanoscale particles were characterized by scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray diffraction(XRD). Finally, the degradation mechanisms of OTC utilizing the as-prepared nanoparticles were investigated by using X-ray photoelectron spectroscopy(XPS) and mass spectrometry(MS). Cu/n ZVI presented remarkable ability for OTC degradation and removed71.44% of OTC(100 mg/L) in 4 hr, while only 62.34% and 31.05% of OTC was degraded by Ni/nZVI and nZVI respectively. XPS and MS analysis suggested that OTC was broken down to form small molecules by ·OH radicals generated from the corrosion of Fe0. Cu/nZVI and Ni/n ZVI have been proved to have potential as materials for application in OTC removal because of their significant degradation ability toward OTC.     

胜利油田外排水中铁细菌主要类群的检测及群落结构分析

根据油田外排水中常见铁细菌的16SrRNA特异性保守序列,设计和合成了4种荧光探针,利用荧光原位杂交方法,分别利用它们对胜利油田孤岛采油厂、胜利采油厂1号和2号综合处理站外排水中存在的铁细菌的种类和数量进行检测,分析了各外排水中铁细菌的群落结构.结果表明,利用基因探针能快速对胜利油田外排水中的铁细菌进行检测:在孤岛采油厂、胜利采油厂1号和2号综合处理站的外排水中,利用4种探针的组合探针检测到的铁细菌细胞数量分别占样品中微生物总细胞数量的11.0%、12.8%和9.0%,其中Leptothrix和Sphaerotilus,以及Leptospirillum fer-riphilum为胜利油田外排水中的3种优势铁细菌,分别占水样中总微生物细胞数的2.94%±0.52%~3.39%±0.52%和2.24%±0.16%~2.63%±0.49%;而Leptospirillum ferrooxidans和Acidithiobacillusspp.的种群则较小.3个污水处理站中铁细菌群落结构差异较大,而多样性相差不大.利用4种探针的各种组合对外排水中铁细菌的检测表明,单探针能够很好地分析外排水中铁细菌的群落结构,而组合探针能快速、较准确地检测外排水中铁细菌的数量,比传统的绝迹稀释法具有快速、准确、直观等优点.图1表5参14