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Panyathanakun V.,Chulalongkorn University | Tantayanon S.,Chulalongkorn University | Tantayanon S.,Green Chemistry Research Laboratory | Tingsabhat C.,Chulalongkorn University | Charmondusit K.,Mahidol University
Journal of Cleaner Production | Year: 2013

The concept of the Eco-Industrial Estate (EIE) was introduced in Thailand in the year 2000. However, various factors have impeded such development. This study reviewed and discussed the development of EIEs in Thailand, and examined EIE strategies. The results of surveys of the surrounding communities at the Northern Region Industrial Estate (NRIE) revealed many challenges, especially in building effective stakeholder collaborations. Representatives of industry and government agencies were introduced to, and discussed, the Community-Based Eco-Industrial Estate (CBEIE) framework at the dedicated ecoforum. The aim of the CBEIE framework is to gain stakeholders' willingness to contribute to EIE development and to encourage the exchange of knowledge, as well as to build trust among stakeholders and to identify mutual benefits for the respective parties. The adoption of an iterative review process and mandatory scheduling of activities and initiatives would enable issues in the environmentecommunity eindustry realm to be addressed. Furthermore, the outcomes of the discussion at the eco-forum would feed into the master plan and contribute to the strategic development of EIEs in the NRIE. © 2013 Elsevier Ltd. All rights reserved.

Samingprai S.,Chulalongkorn University | Tantayanon S.,Green Chemistry Research Laboratory | Tantayanon S.,Chulalongkorn University | Ma Y.H.,Worcester Polytechnic Institute
Journal of Membrane Science | Year: 2010

Dense palladium membrane on oxidized porous stainless steel (oxPSS) tube was prepared. Its hydrogen permeance was observed to decline at the temperature higher than 400 °C. SEM-EDX analysis of the cross-section of the annealed tube at 500 °C indicated the occurrence of the intermetallic diffusion. The heat treatment study of the palladium membrane on oxPSS disks in hydrogen atmosphere at various temperatures was essentially carried out. Their SEM-EDX analysis results confirmed that the in situ metal oxide barrier could not inhibit the intermetallic diffusion in hydrogen atmosphere. The chromium oxide layers at different thicknesses were then developed on oxPSS disks before palladium plating by controlled chromium elctrodeposition followed by oxidation in air at 700 °C. The similar heat treatment study and SEM-EDX analysis of these disks revealed that the presence of chromium oxide layer could suppress the intermetallic diffusion. Then, the dense palladium membrane tube with chromium oxide layer was prepared and its heat treatment in hydrogen atmosphere was studied. The result showed the steady increase in hydrogen permeance with increasing temperature. © 2009 Elsevier B.V.

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