TBP-泡塑填料柱萃取回收铁钍渣浸出液中钍的研究

将ＴＢＰ固定在改性泡塑载体上，用于萃取回收铁钍渣硝酸浸出液中Ｔｈ４＋。试验表明：ＴＢＰ泡塑填料萃取分配比高，萃取容量大，当溶液硝酸浓度为４ｍｏｌ／Ｌ，接触时间１０ｍｉｎ时，萃余液中Ｔｈ４＋浓度小于００１ｍｇ／Ｌ，反萃液中Ｔｈ３＋浓度达８４ｇ／Ｌ，Ｆｅ３＋和Ｃｅ３＋浓度小于０１ｍｇ／Ｌ，萃取容量为ＴＢＰ泡塑填料１ｇ可萃取Ｔｈ４＋０２８ｇ；ＴＢＰ泡塑填料化学性质稳定，分相容易，能有效防止乳化现象。     

A summary of environmental legislation targeting disposable diapers and review of related literature

In recent years state and local governments, as well as private citizens, have become very concerned about the mounting solid waste disposal problem facing our nation. Special concern has been expressed over the presence of disposable diapers in the solid waste stream. Responding to the concerns, legislators in at least 25 states proposed actions regarding disposable diapers between 1990 and 1992. Several factors contributed to the number of legislative proposals regarding disposable diapers over the past few years. First was the public's and legislators' misconception about the contribution of disposable diapers to the solid waste stream. Second was an erroneous assumption held by the public and some legislators that biodegradation readily occurs in landfills. Third was the desire to increase demand for agricultural products by requiring the use of degradable products. These contributing factors and other issues surrounding the proposal and passage of environmental legislation pertaining to disposable diapers are presented in this paper and the relevant literature is summarized. To provide the necessary context, the paper contains a review of the literature concerning disposable diapers, their composition and usage; and their environmental impact and fate and a comparison of their performance and cost to those of cloth diapers.     

高技术再资源化是根治“白色污染”的主要方向

针对“白色污染”日益严重的现状，对现有的“白色污染”防治对策和技术进行了分析探讨，指出简单的技术已不适用，可降解的发展尚需时日，而废塑料再资源化技术才是根治“白色污染”的主要方向。     

废弃塑料裂解油化技术

综述了废弃塑料进行热裂解和催化裂解以获得聚合单体、柴油、汽油和燃料气的工艺原理、工艺流程和常用的裂解催化剂。指出裂解油化技术是今后处理废弃塑料的主要方式之一。     

TBP-泡塑填料柱萃取回收铁钍渣浸出液中钍的研究

将ＴＢＰ固定在改性泡塑载体上，用于萃取回收铁钍渣硝酸浸出液中Ｔｈ４＋。试验表明：ＴＢＰ泡塑填料萃取分配比高，萃取容量大，当溶液硝酸浓度为４ｍｏｌ／Ｌ，接触时间１０ｍｉｎ时，萃余液中Ｔｈ４＋浓度小于００１ｍｇ／Ｌ，反萃液中Ｔｈ３＋浓度达８４ｇ／Ｌ，Ｆｅ３＋和Ｃｅ３＋浓度小于０１ｍｇ／Ｌ，萃取容量为ＴＢＰ泡塑填料１ｇ可萃取Ｔｈ４＋０２８ｇ；ＴＢＰ泡塑填料化学性质稳定，分相容易，能有效防止乳化现象。     

利用混合菌群活性污泥法实现生物可降解塑料PHA的合成

PHA是一种生物可降解塑料，可从污水有机物中合成。文章在简要说明现阶段工业生产PHA情况的基础上，总结了利用混合菌种活性污泥法从污水有机物中合成PHA的优点。重点对两种从污水中生产PHA工艺——厌氧-好氧活性污泥工艺和好氧瞬时供料工艺进行了介绍，并给出了相应工艺流程。通过使用廉价的有机底物可以使PHA的生产价格降低到原来的一半，大约为每公斤4欧元左右。文章还讨论了控制工艺运行条件对PHA合成的重要性，并说明了不同底物组成对合成PHA性质的影响。     

废弃塑料热降解及燃烧动力学试验研究

通过塑料的热降解现象试验，观察出塑料的热降解温度特性；通过废塑料燃烧过程的燃烧失重试验，计算出其燃烧动力学参数，分析塑料燃烧特性。结果表明：在高炉炉缸高温，富氧的环境中，废塑料能够得到迅速、充分的燃烧，可以部分代替焦碳和煤粉。     

一种新的废塑料油化生产工艺的研究

针对废塑料油化工艺中的问题 ,应用新型的流化床反应釜催化裂解废塑料 ,并利用混合废塑料为原料进行了中试试验 ;研究了催化剂种类和催化改质温度对所得液体油品产率、催化剂积碳率等的影响以及热裂解中裂解温度对液体油品产率的影响。油品经催化改质后 ,其质量得到明显提高 ,该法所生产的汽油和柴油产品符合国家标准     

光-生物双降解聚苯乙烯泡沫塑料降解性研究

研究了一种用来制造快餐盒的光－生物双降解聚苯乙烯（ＰＳ）发泡塑料的降解性能及其影响因素，结果表明：双解ＰＳ样品能在可见光照射下发生光降解。在真菌作用下发生微生物降解，光降解对微生物降解无明显促进作用，真菌能够利用双解ＰＳ表面和内部的改性淀粉，双解ＰＳ片材与餐盒在重量变化率上的显著差异揭示了生产过程中的机械冲压是餐盒微生物降解性能降低的主要原因。     

De-Europeanising or disengaging? EU environmental policy and Brexit

ABSTRACT

The European Union (EU) has had a profound effect upon its members’ environmental policy. Even in the United Kingdom (UK), the EU’s most recalcitrant member state (historically labeled the ‘Dirty man of Europe’), environmental policy has been Europeanised. As the UK moves to the EU’s exit door it is timely to assess the utility of Europeanisation for understanding policy dynamics in the UK. Drawing upon interviews and extensive engagement with stakeholders, this article analyses the potential impact of Brexit upon environmental policy and politics. The analytical toolkit offered by de-Europeanisation is developed to identify the factors that drive and inhibit de-Europeanisation processes, thereby providing insights that may be applicable in other settings. Disengagement and policy stagnation are presented as more likely environmental outcomes of Brexit, with capacity emerging as a central explanatory variable.