高浓度O_3水研究

介绍了臭氧水溶液研究的进展及其广泛诱人的应用前景 ,同时阐叙了产生高浓度臭氧、高效率溶解臭氧及制取臭氧水溶液等方法。利用这些方法 ,臭氧水溶液的臭氧浓度达 8g/m3,臭氧溶解率达 98%以上     

Removal of lead from aqueous solutions by condensed tannin gel adsorbent

Lead has caused serious environmental pollution due to its toxicity, accumulation in food chains and persistence in nature.In this paper, lead removal from aqueous solutions was investigated using condensed tannin gel adsorbent synthesized from a natural tannin compound. It is found that the adsorption is strongly affected by pH values of aqueous solutions.Within pH range of 3.5-6,when initial lead concentration is 100 mg/L, removal efficiency is more than 90%.Adsorption equilibrium is reached within 150 minutes.The adsorption isotherm fits well with the Langmuir equation, by which the saturated adsorption uptake of 190 mg Pb^2 /g dry tannin gel adsorbent is obtained.By means of thermodynamics analysis,it is revealed that the process is exothermic and the adsorption heat is up to 38.4kJ/mol.With respect to high efficiency, moderate pH requirement and minimized second pollution, the tannin gel adsorbent exhibits a promising potential in the removal of lead from wastewater.     

Reaciton mechanism of 3—chloroiphenol with OH,H in aqueous solution

The reaction mechanism of 3-chlorophenol with OH, H in aqueous solution was studied by transient technology.The 3-chlorophenol aqueous solutions have been saturated with air or N2 previously.Under alkaline condition,the reaction of OH radical with 3-chlorophenol produces 3-chlorinated phenoxyl radical ,with the absorption peaks at 400 nm and 417nm.Under neutral condition,the reaction of OH radical with 3-chlorophenol produces OH-adduct with the maximal absorption at about 340 nm.And in acid solution,the reaction of H with 3-chlorophenol produces H-adduct with the maximal absorption at about 320nm.3-chlorophenol is compared with 4-and 2-chlorophenols from the free radical pathways.The results show that the positions of chlorine on the aromatic ring strongly influence the dehalogenation and degradation process.     

酿酒酵母吸附Zn2+、Pb(2+)、Ag+、Cu2+的动力学特性研究

利用静态摇瓶实验方法,研究了工业废弃酿酒酵母无缓冲溶液体系吸附Zn2 、Pb2 、Ag 、Cu2 的动力学特性.结果表明,酵母吸附Zn2 、Pb2 、Ag 、Cu2 的动力学过程可以用准二级动力学方程进行描述.金属离子初始浓度在0.08～3.0 mmol·L-1范围内,Langmuir方程可以较好地描述Zn、Pb、Ag的等温吸附行为,Zn、Pb、Ag的理论饱和吸附量分别为0.522 mmol·g-1(34.11 mg·g-1)、0.577 mmol·g-1(119.50mg·g-1)和0.329 mmol·g-1(35.50 mg·g-1).以mol为基础的金属离子吸附量顺序是:Pb＞Zn＞Ag;以mg为基础的金属离子吸附量顺序是:Pb＞Ag＞Zn.Freundlich方程对整个浓度范围内的平衡数据拟合效果较差,但是它可以较好地描述低浓度Zn2 (初始浓度0.08～0.5mmol·L-1)、低浓度Pb2 (0.08～1.0 mmol·L-1)以及高浓度Ag (1.5～3.0 mmol·L-1)的等温吸附行为.酵母吸附Zn2 、Pb2 、Ag 、Cu2 过程中,溶液pH值有不同程度的增加,增加幅度大小顺序是Zn＞Pb＞Ag＞Cu,这间接反映出Zn2 、Pb2 、Ag 、Cu2 与水溶液中H 的竞争力逐步减弱.吸附过程中酵母释放大量的K ,其次是Mg2 ,而Ca2 、Na 的释放量较低,数量级一般可分别达到几百μmol·g-1 、几十μmol·g-1、几到几十μmol·g-1、十几μmol·g-1.     

根癌农杆菌介导工业化产甘油假丝酵母的遗传转化

通过构建质粒pCAM3300-zeocin,将其电击转化到根癌农杆菌LBA4404中.将含有目的质粒pCAM3300-zeocin的根癌农杆菌和工业化产甘油假丝酵母(Candida glycerinogenes)WL2002-5共培养,利用zeocin抗性基因为筛选标记,实现了pCAM3300-zeocin对产甘油假丝酵母的转化.并根据产甘油假丝酵母的生长特性,对转化条件进行了优化,在共培养时间为24h,产甘油假丝酵母和根癌农杆菌的细胞比例为1∶(500～1000)时最高转化率达到2个转化子/104个酵母细胞.初步建立了根癌农杆菌介导转化产甘油假丝酵母的转化方法.     

工业废水中盐酸,氯乙酸,醋酸共存时盐酸的测定

介绍了配水及工业废水中盐酸，氯乙酸，醋酸同时存在时，测定盐酸含量的方法。测定的相对标准偏为９．６９０％－０．９０３％，盐酸回收率为９３．４％－１０４．０％。     

水溶液中残留四环素的光催化降解的实验研究

由于抗菌素具有抑制微生物生存的作用，通常处理工业废水最有效的“生物氧化降解法”却无法用来有效处理四环素废液，简述了半导体光催化剂在紫外光照射下降解难溶或难分解有机物基本原理，以半导体ＴｉＯ２和ＺｎＯ粉粒为光催化剂进行催化降解四环素废液的实验，其结果表明：半导体ＴｉＯ２光催化降解效果比较好；另外，Ｈ２Ｏ２可以作为ＴｉＯ２光催化剂的助氧化剂来加快四环素的降解，该实验结果有助于光催化剂的深入研究和太阳能     

制取高浓度臭氧水的实验研究

采用介质阻挡强电离放电技术制取高浓度臭氧 ,使用射流器和气液溶解分离器溶解臭氧制取高浓度臭氧水。讨论了应用臭氧量、气液比、系统压力和气液溶解方式对臭氧水浓度和臭氧有效溶解效率的影响     

用磷泥生产磷铜母合金的方法

该发明涉及一种用磷泥生产磷铜母合金的方法：向熔磷槽内投入磷泥，加热至高于黄磷熔点的温度下熔融；在蒸磷锅内加入相当于锅容积1／6～1／2的水，然后将熔融后的磷泥引入蒸磷锅内，加热至285～400℃产生磷蒸气；将磷蒸气通入气液吸收反应器与可溶性铜盐水溶液反廊；反应后含固液两相的混合物通过固液分离装置进行分离；固液分离所得崮体产物继续用水冲洗、过滤，直至滤液中无铜离子和元素磷检出；所得固体产物十燥至水的质量分数小于5％，即得磷铜母合金（P质量分数不低于14．5％，Cu质量分数不低于83．2％）。     

Removal of Crystal Violet from aqueous solution using powdered mycelial biomass of Ceriporia lacerata P2

A simple and efficient biosorbent prepared from powdered mycelial biomass of Ceriporia lacerata was used to removal Crystal Violet, poorly degraded as recalcitrant molecule by microorganism.