接枝羧基壳聚糖的合成及其对重金属离子的吸附性能

以壳聚糖为基体,经环氧氯丙烷交联,制备了水不溶性交联壳聚糖,然后以Ｆｅ＾２＋－Ｈ２Ｏ２为引发剂,将丙烯腈单体接枝到ＣＣＴＳ分子骨架上,经皂化制得了水溶性接枝羧基壳聚糖聚合物。     

Fe2+和Fe3+在4-氯酚光化学反应中性质的相似性

研究在光照条件下,２０ｍｇ／ｌ４－氯酚＋１ｍｇ／ＬＦｅ＾２＋（体系Ａ）和２０ｇ／Ｌ４－氯酚＋１ｍｇＦｅ＾３＋（体系Ｂ）中Ｆｅ＾２＋和Ｆｅ＾３＋的浓度变化,通过离子色谱手段,在体系Ａ中能够同时检测出Ｆｅ＾２＋,在体系Ｂ中亦能够同时检测到Ｆｅ＾２＋,故Ｆｅ＾２＋和Ｆｅ＾２＋在４－氯酚光化学反应中的性质,表现出相似性。     

南沙群岛海域沉积物环境与间隙水中的铁锰

研究了南沙群岛海域泻湖及礁外沉积物间隙水中的Ｆｅ＾２＋、Ｍｎ＾２＋、浓度及其比值、沉积物－海水界面扩散通量、沉积物类型及其氧化还原环境。结果表明，间隙水中的Ｆｅ＾２＋、Ｍｎ＾２＋浓度泻湖高于礁外，Ｆｅ＾２＋（礁）／Ｆｅ＾２＋（泻）浓度比为０．２８，Ｍｎ＾２＋（礁）／Ｍｎ＾２＋（泻）浓度比为０．６６，Ｍｎ＾２＋／Ｆｅ＾２＋比值泻湖内为１．４７，礁外为３．５２，Ｆｅ＾２＋、Ｍｎ＾２＋均是从沉积物向上覆     

H2O2—Fe^2＋／TiO2—H2SO4体系处理废有机溶剂的研究

研究了废有机溶剂ＴＢＰ／ＯＫ在Ｈ２Ｏ２－Ｆｅ＾２＋／ＴｉＯ２－Ｈ２ＯＳ４体系中的氧化分解行为，分析Ｈ２Ｏ２用量、催化剂、温度、ＰＨ 控因素对反应进程及结果的影响。在此基础上进行的“热”实验表明，废有机溶剂氧化分解后所含放射性核素主要富集在以应残液中，基本没有二次转移或扩散。对ＴＢ．ＯＫＨ２Ｏ２经氧化机理及Ｆｅ＾２＋／ＴｉＯ２的协同催化机理进行了初步探讨。     

单种及混合培养条件下Fe、Mn对赤潮生物塔玛亚历山大藻(Alexandriumtamarense)生长的影响

研究了单种和两种混合世量培养条件下，Ｆｅ－ＥＤＴＡ（Ｆｅ＾３＋）、Ｍｎ（Ｍｎ＾２＋）浓度对甲藻塔玛亚历山大藻（Ａｌｅｘａｎｄｒｉｕｍ ｔａｍａｒｅｎｓｅ）生长及细胞大小的影响。同时考察了与其混合培养中的肋骨条藻（Ｓｋｅｌｅｔｏｎｅｍａ ｃｏｓｔａｔｕｍ）和圆筛藻（Ｃｏｓｃｉｍｏｄｉｓ ｃｕｓ ｓｐ．）的生长特性，结果表明在本实验的浓度范围内（Ｆｅ－ＥＤＴＡ，０－３．１５μｇ／Ｌ，Ｍｎ＾２＋，０－０     

地下水中硒存在形态的分析方法

本文采用含高浓度Ｍｇ＾２＋和ＳＯ４＾２－的三种地下水样，在ＰＨ〈５条件下，地下水样中的ＳｅＯ３＾２－和ＳｅＯ４＾２－选择性地吸附于ＣｕＯ颗粒物上，然后在ＰＨ＝１２．５时解吸。接着用ＨＧＡＡＳ和ＩＣ法分别测出ＳｅＯ３＾２－，ＳｅＯ４＾２－浓度。并对二阶阳离子影响水中ＳｅＯ４＾２－的测定作了估算。     

飞灰浆液脱硫特性的初步研究

对飞灰中铁等离子的浸出特性进行了正交试验,ＰＨ对其浸出量大小有显著影响,在试验ＰＨ下降Ｆｅ＾３＋的浓度可达到３０ｍｇ／Ｌ。Ｆｅ＾３＋溶液和飞灰浸出液的脱硫试验表明,Ｆｅ＾３＋的脱硫反应符合过渡态催化氧机理,对ＳＯ２吸附量的最佳增强作用出现在ＰＨ＝２－３。     

选择性螯合滴定法测定钙镁

用知量Ｔａｒｔｒａｔｅ、ＴＥＡ和ＤＬ－Ｃｙｓｔｅｉｎｅ掩蔽Ｆｅ＾３＋、Ａｌ＾３＋、Ｃｕ＾２＋、Ｎｉ＾２＋、Ｚｒ＾４＋、Ｃｄ＾２＋、Ｐｂ＾２＋和Ｍｎ＾２＋等离子，在ＰＨ为１０左右用ＥＤＴＡ滴定钙镁含量。然后另入Ｏｘｉｎｅ分解Ｍｇ－ＥＤＴＡ螯合物，用Ｃａ＾２＋标准溶液滴定释放出的ＥＤＴＡ。用ＭＴＢ－ＸＯ－ＣＰＢ为混合指示剂，终点颜色变化敏税，一般常见金属离了均不干扰。可用于测定水和工业废水钙，镁含量。     

酸性条件下Fe3+氧化SO2的脱硫反应机理

讨论酸性条件下Ｆｅ＾３＋液相氧化ＳＯ２的几何可能反应机理,设计了不同的缓冲和非缓冲Ｆｅ＾３＋溶液脱硫试验。通过对不同反应体系ＳＯ２吸收特性的测量,得出了反应符合半导体或过渡态金属的催化机理,液相氧化反应的速率受Ｆｅ＾３＋的老化进程所控制,从而为低浓度Ｆｅ＾３＋溶液烟气脱硫和解释雾水酸化现象提供了理论基础。     

半胱氨酸亚铁再生循环法清除烟道气中的NOx和SO2

中性或碱性半胱酸亚铁溶液能吸收潮湿的烟道气中的ＮＯ半胱氨酸亚铁在烟道气中在由残余的Ｏ２氧化成中间产物（半胱氨酸铁）在中间物中存在电子转移反应，Ｆｅ＾３＋再生成Ｆｅ＾２＋，氧化产物胱氨酸用Ｈ２Ｓ和ＳＯ２转变成半胱氨酸，以清除烟道气中的ＮＯｘ和ＳＯ２。     

高强度埋纱绿色包装袋纸的开发应用

阐述了高强度埋纱绿色包装袋纸是纸/塑复合或塑/塑复膜的污染环境包装材料的替代产品，生产流水线由5项专利技术为基础构成，生产原料来源充足，体现资源循环利用，生产企业经济效益显著，产品具有撕裂度，抗张强度高，抗水防潮，耐热，牢固度好，破包率低，指出产品可为国家节约大批木材，对保护森林资源贡献巨大，产品生产过程中不对环境造成污染。     

废塑料与炼焦配煤共焦化产物的分析

利用2kg模拟焦炉，进行了首钢炼焦配煤与北京市石景山区生活垃圾中的废塑料的共焦化实验。研究结果表明，添加废塑料有提高焦油收率和减少水的收率的趋势；但添加废塑料对成焦率、焦油产率及水产率的影响随废塑料处理方法和废塑料添加比例的不同而有差异；采用废塑料型煤或废塑料型煤破碎物与配煤共焦化在提高废塑料添加比例方面具有较大优势。     

Effect of competing solutes on arsenic(V) adsorption using iron and aluminum oxides

The study focused on the effect of several typical competing solutes on removal of arsenic with Fe2O3 and Al2O3. The test results indicate that chloride, nitrate and sulfate did not have detectable effects, and that selenium(IV) (Se(IV)) and vanadium(V) (V(V)) show slight effects on the adsorption of As(V) with Fe2O3. The results also showed that adsorption of As(V) on Al2O3 was not affected by chloride and nitrate anions, but slightly by Se(IV) and V(V) ions. Unlike the adsorption of As(V) with Fe2O3, that with Fe2O3 was affected by the presence of sulfate in water solutions. Both phosphate and silica have significant adverse effects on the adsorption of As(V) adsorption with Fe2O3 and Al2O3. Compared to the other tested anions, phosphate anion was found to be the most prominent solute affecting the As(V) adsorption with Fe2O3 and Al2O3. In general, Fe2O3 has a better performance than Al2O3 in removal of As(V) within a water environment where multi competing solutes are present.     

Effect of competing solutes on arsenic（Ⅴ） adsorption using iron and aluminum oxides

The study focused on the effect of several typical competing solutes on removal of arsenic with Fe_2O_3 and AL_2O_3.The test results indicate that chloride,nitrate and sulfate did not have detectable effects,and that selenium(Ⅳ)(Se(Ⅳ))and vanadium(Ⅴ)(V(Ⅴ)) showed slight effects on the adsorption of As(Ⅴ)with Fe_2O_3.The results also showed that adsorption of As(Ⅴ)on AL_2O_3 was not affected by chloride and nitrate anions,but slightly by Se(Ⅳ)and V(Ⅴ)ions.Unlike the adsorption of As(Ⅴ)with Fe_2O_3,that with Fe_2O_3 was affected by the presence of sulfate in water solutions.Both phosphate and silica have significant adverse effects on the adsorption of As(Ⅴ)adsorption with Fe_2O_3 and Al_2O_3.Compared to the other tested anions,phosphate anion was found to be the most prominent solute affecting the As(Ⅴ)adsorption with Fe_2O_3 and Al_2O_3.In general,Fe_2O_3 has a better performance than Al_2O_3 in removal of As(Ⅴ)within a water environment where multi competing solutes are present.     

Fe(Ⅵ)/Na2SO3体系降解阿特拉津效能

利用高铁酸钾活化亚硫酸钠(Fe(Ⅵ)/Na₂SO₃体系),探究其对阿特拉津(ATZ)的降解效能;鉴别了反应体系主要活性组分,并考察了Na₂SO₃投加量、反应溶液pH值和水质背景成分对ATZ降解效能的影响.结果表明:当Fe(VI)和Na₂SO₃的投加量分别为50和200μmol/L时,反应10s后Fe(Ⅵ)/Na₂SO₃体系对ATZ的降解效能达到74.4%,单独Fe(VI)(50μmol/L)和单独Na₂SO₃(200μmol/L)对ATZ的去除率仅为10.2%和7.5%.探针化合物和溶解氧作用等实验证实体系中主要的活性基团为SO₄^·-.在pH=8,Fe(VI)投加量为50μmol/L时,随着Na₂SO₃投加量的增大,Fe(Ⅵ)/Na₂SO₃体系对ATZ的去除效率先增大后减小,其中最佳Na₂SO₃投加量为150~200μmol/L.Fe(Ⅵ)/Na₂SO₃体系在pH 7~10的范围内,均可以快速降解ATZ.在天然水体中,Fe(Ⅵ)/Na₂SO₃体系也可以高效降解ATZ,但是水质背景成分会竞争消耗SO₄^·-,导致Fe(Ⅵ)/Na₂SO₃体系对ATZ的降解效能降低.     

凹凸棒复合滤料生物过滤去除Fe2＋性能研究

利用凹凸棒复合滤料良好的吸附和生物挂膜性能对普通滤池进行生物强化,研究生物过滤对原水中Fe2＋的去除效果及影响因素。实验结果表明：原水溶解氧在3 mg/L左右,Fe2＋的去除率达到90%以上;温度在13.9℃-22.3℃时,Fe2＋去除率达到93%以上;滤速越低,生物过滤对Fe2＋的去除率越高,4 m/h为本实验研究的最佳水力负荷;原水中Fe2＋浓度在2 mg/L以下时,出水的Fe2＋浓度可以达到0.15 mg/L以下。反冲洗对生物过滤去除Fe2＋的影响较小,去除率在冲洗2 h后能够恢复到冲洗前的水平。     

A green method to synthesize flowerlike Fe(OH)3 microspheres for enhanced adsorption performance toward organic and heavy metal pollutants

Dyestuffs and heavy metal ions in water are seriously harmful to the ecological environment and human health.Three-dimensional(3 D) flowerlike Fe(OH)_3 microspheres were synthesized through a green yet low-cost injection method,for the removal of organic dyes and heavy metal ions.The Fe(OH)_3 microspheres were characterized by thermal gravimetric analysis(TGA),Fourier transform infrared(FT-IR),and transmission electron microscopy(TEM) techniques.The adsorption kinetics of Congo Red(CR) on Fe(OH)_3 microspheres obeyed the pseudo-second-order model.Cr~(6+) and Pb~(2+) adsorption behaviors on Fe(OH)_3 microspheres followed the Langmuir isotherm model.The maximum adsorption capacities of the synthesized Fe(OH)_3 were 308,52.94,and 75.64 mg/g for CR,Cr~(6+),and Pb~(2+) respectively.The enhanced adsorption performance originated from its surface properties and large specific surface area of 250 m~2/g.The microspheres also have excellent adsorption stability and recyclability.Another merit of the Fe(OH)_3 material is that it also acts as a Fenton-like catalyst.These twin functionalities(both as adsorbent and Fenton-like catalyst) give the synthesized Fe(OH)_3 microspheres great potential in the field of water treatment.     

铁屑/焦炭/H_2O_2法预处理焦化废水的试验研究

采用铁屑/焦炭/H2O2法对焦化废水进行处理,通过单因素试验法考察了铁炭比、铁炭用量、H2O2用量、废水pH以及反应时间对处理效果的影响,并确定了最适工艺条件。结果表明,铁屑/焦炭/H2O2法与常规的铁屑内电解法相比,可显著提高焦化废水的预处理效果,并缩短反应时间。铁屑/焦炭/H2O2法处理焦化废水的最适条件为:铁炭比为4,铁炭用量为300mg/L铁屑+75mg/L焦炭,H2O2用量为1000mg/L,pH为3,反应时间20min。在此条件下,COD、色度、NH3-N和CN-的去除效率分别可达61.2%、74.0%、56.2%和74.3%,B/C比由处理前的0.189提高到0.387,处理水可生化性良好。铁屑/焦炭/H2O2可作为焦化废水的一种有效的预处理方法。     

基于吡啶甲基萘酰亚胺的水中痕量铁检测方法研究

合成了一种新型的荧光分子探针N-(2-吡啶甲基)-1,8-萘酰亚胺(PMN),研究了其在环境水样中痕量铁离子的检测应用.结果表明,该方法选择性好,灵敏度高,操作简便,且常见金属离子不干扰测定.Fe3+浓度在1×10-7~8×10-5mol/L范围内,荧光强度与其浓度呈良好的线性关系.方法用于自来水、井水、生活污水中痕量铁的测定,回收率在95.78%~104.02 %之间.