Preface--颗粒学报PARTICUOLOGY

The 7th World Congress on Recovery, Recycling and Re-integration (R’05) was held in Beijing, China from September 25 to 29, 2005. Over 600 papers from 60 countries, and 6 plenary lecturers on achievements and future needs in various areas of 3R were presented in 15 parallel sessions. In addition, two forums and four workshops were arranged for in-depth discussions on specific topics.

The 3R World Congress series originated from the Rio Earth Summit, 1992, at which the need for a global forum to discuss sustainable management issues was proposed. The first 3R Congress was held in Geneva, Switzerland in 1993, followed by three more, also in Geneva, in 1995, 1997 and 1999. In 2000, the fifth Congress moved to Toronto, Canada, and the sixth one was back to Geneva in 2002. To make this serial 3R Congress more international and, in particular, to respond to the great attention of the Chinese government to recycle economy, this seventh Congress, came to Beijing as a result of cooperation between the Chinese Academy of Sciences and the Swiss Academy of Engineering Sciences under the support of the State Environmental Protection Administration of China.

In this seventh Congress there were many papers related to particle science and technology covering a wide range of subjects on resources, energy, environment, materials, biology, and process engineering. Based on congress presentations, twelve of the representative particle-related papers were selected to fill a single issue of China PARTICUOLOGY, in the hope of calling to the attention of the particle scientists and engineers the importance of the Recycle Economy. We hope that this special issue could bring you some valuable information as to what particuology has done and can do in the expanding field of Recovery, Recycling and Re-integration of the Recycle Economy of the 21st century.

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