金鱼藻对Cu2+的生物吸附特征

研究了沉水植物金鱼藻对Cu2 的吸附动力学及热力学特征.结果表明,金鱼藻对Cu2 的吸附在20min内达到平衡,吸附动力学的实验结果符合伪二级动力学方程,其相关系数达到0.9937,表明该吸附为多种反应同时作用的复杂过程.用Langmuir和Freundlich2种吸附等温式拟合吸附热力学的实验结果表明,以Langmuir模型拟合效果更好,相关系数为0.9977,其最大吸附量为7.79mg/g.在解吸实验中,各浓度组的解吸率均在1%以下,表明金鱼藻对Cu2 的吸持作用较强.     

树脂吸附法处理煤气废水的试验研究

煤气废水是煤气加压气化后的废弃产物,物质成分复杂，是污水处理的难题。树脂法水处理广泛应用在水处理中。依据树脂吸附原理，采用大孔径吸附树脂、超高交联树脂和络合吸附树脂,对煤气废水的处理过程及使用效果进行了一系列试验研究，确定了固定床吸附工艺是煤气废水生化水处理的前提及其经济适用性。     

CrⅥ adsorption on four typical soil colloids: equilibrium and kinetics

It is observed that the adsorption of chromium are greater on kaolinite minerals, red soil (R) and laterite (L) colloids than that on montmorillonite, indicotic black (IB) and yellow brown (YB) soil colloids. The adsorption process of CrⅥ on these media can be further described by Langmuir or Freundlich equation quite well. The adsorption reaction of CrⅥ is fast, and the adsorption equilibrium can be reached within the first two hours in moderate temperature. The adsorption quantity of CrⅥ to kaolinite mineral increased with the increasing pH in the range of 2.0 to 7.0, then decreased at higher pH. But it showed some consistence among the four soil colloids. The lower the pH, the stronger the adsorption. The possible mechanisms are further discussed here. Meanwhile the influence of temperature on CrⅥ adsorption on different soil colloid and clay minerals are also investigated.     

以绿化三维量分析植物群降解SO2的宏观效应

控制和降低城市上空ＳＯ２的环境浓度对于改善城市环境，促进城市生态的良性循环具有十分重要的意义。本文从上海市绿化三维量分布模型、与ＳＯ２浓度分布模型的相关分析入手，以季节变化作为对比因子，讨论了城市绿化植物群的数量及分布对城市上空ＳＯ２浓度分布的宏观影响；并据此提出了可有效地控制城市上空ＳＯ２浓度的绿地建设的基本原则。     

Protozoan colonization on artificial substrates in relation to water quality in a tropical Indian harbour

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎａｑｕａｔｉｃｅｃｏｓｙｓｔｅｍｓｂｉｏｌｏｇｉｃａｌｃｏｍｍｕｎｉｔｉｅｓａｒｅｒｅｍａｒｋａｂｌｙｃｏｍｐｌｅｘｉｎｂｏｔｈｔｈｅｉｒｏｐｅｒａｔｉｏｎａｎｄｒｅｓｐｏｎｓｅｔｏａｎｔｈｒｏｐｏｇｅｎｉｃａｃｔｉｖｉｔｉｅｓ.Ｔｈｉｓｈａｓｌｅｄｍａｎｙｉｎｖｅｓｔｉｇａｔｏｒｓｔｏｃｏｎｄｕｃｔｌａｂｏｒａｔｏｒｙａｎｄｆｉｅｌｄｓｔｕｄｉｅｓｆｏｒｅｖａｌｕａｔｉｎｇｔｈｅｅｃｏｌｏｇｉｃａｌｒｉｓｋｐｏｓｅｄｂｙｈｕｍａｎｓｔｏｅｃｏｓｙｓｔｅｍ(Ｃａｉｒｎｓ…     

Adsorption selectivity of salicylic acid and 5-sulfosalicylic acid onto hypercrosslinked polymeric adsorbents

Both bottle-point and column-feeding experiments involving different solutes and sorbents were carried out to investigate the adsorption selectivity and separation performance of salicylic acid and 5-sulfosalicylic acid. Their adsorption isotherms onto such hypercrosslinked polymeric adsorbents as NDA-100 and NDA-99 could be well described by the Freundlich equations whose characteristics describe extrathermic and favorable adsorption processes. The adsorption towards NDA-100 mainly depended on the π-π interaction, while that towards NDA-99 was extremely influenced by the static-electric interaction. Additionally, the adsorptive capacity of salicylic acid on NDA-99 decreased while it increased on NDA-100 with the presence of 5-sulfosalicylic acid in the adsorptive environment as the competitive component. Comparatively, the adsorption capacity of 5-sulfosalicylic acid decreased on both resins with salicylic acid as the competitive component. In fact, the difference in the interaction between adsorbent and adsorbate resulted in the straight antagonism on the effective adsorption sites on the adsorbent. In conclusion, the adsorption selectivity of salicylic acid onto NDA-100 was obviously larger than that onto NDA-99 with the existence of 5-sulfosalicylic acid in the adsorptive environment. A satisfactory separation and recovery of tested solutes in aqueous phase could be foreseeably achieved by the sequencing adsorption technique involving NDA-100 as well as NDA-99. Translated from Environmental Pollution & Control, 2005, 27(8): 570–574 [译自: 环境污染与防治]     

清洁的胡椒基T醚生产工艺的研究I,5-丙基-1,3-苯并二氧杂茂的氯甲基化废水的处理

报道了胡椒基丁醚生产中５－丙基－１，３－苯并二氧杂茂的氯甲基化的废水处理，该废水经蒸馏可回收９４％的盐酸，此酸吸收氯化氢后浓度在３６％以上，可再用于氯甲基化反应。蒸馏残液经分油、Ｆｅｎｔｏｎ试剂处理和五次生炭柱吸附后ＣＯＤＣｒ等项指标均可国家二类污染物的一级排放标准。     

天然矿石毒重石吸附硫酸盐废水的试验研究

利用天然矿石毒重石对硫酸盐废水进行吸附处理，在废水的pH=9，停留时间为80min左右时，该吸附剂具有较好的吸附效果。且该离子交换吸附法具有成本低、操作简单、无二次污染的优点。     

黄磷尾气净化方法探讨

黄磷尾气的主要成分是CO，可作为燃料和碳一化工原料。综合论述了黄磷尾气的几种净化方法，对其净化效果进行比较，并对净化后的尾气用途作了简单介绍。分析了黄磷尾气净化的难点。     

Pulse cleaning flow models and numerical computation of candle ceramic filters

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