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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Olivares-Marín, M. García, S. Pevida, C. Wong, M. S. Maroto-Valer, M. |
| Description | Country affiliation: Spain Author Affiliation: Olivares-Marín M ( Department of Organic and Inorganic Chemistry, Faculty of Sciences, University of Extremadura, Avd de Elvas, E-06071 Badajoz, Spain. maraom@unex.es) |
| Abstract | Adsorption is one of the most promising technologies for reducing CO(2) emissions and at present several different types of sorbents are being investigated. The use of sorbents obtained from low-cost and abundant precursors (i.e. solid wastes) appears an attractive strategy to adopt because it will contribute to a reduction not only in operational costs but also in the amount of waste that is dumped and burned in landfills every year. Following on from previous studies by the authors, in this work several carbon-based adsorbents were developed from different carpet wastes (pre-consumer and post-consumer wastes) by chemical activation with KOH at various activation temperatures (600-900 °C) and KOH:char impregnation ratios (0.5:1 to 4:1). The prepared materials were characterised by chemical analysis and gas adsorption (N(2), -196 °C; CO(2), 0 °C), and tested for CO(2) adsorption at temperatures of 25 and 100 °C. It was found that both the type of precursor and the conditions of activation (i.e. impregnation ratios, and activation temperatures), had a huge influence on the microporosity of the resultant samples and their CO(2) capture capacities. The carbon-based adsorbent that presented the maximum CO(2) capture capacities at 25 and 100 °C (13.8 wt.% and 3.1 wt.%, respectively), was prepared from a pre-consumer carpet waste and was activated at 700 °C using a KOH:char impregnation ratio of 1:1. This sample showed the highest narrow microporosity volume (0.47 cm(3) g(-1)), thus confirming that only pores of less than 1 nm are effective for CO(2) adsorption at atmospheric pressure. |
| File Format | HTM / HTML |
| ISSN | 03014797 |
| Issue Number | 10 |
| Volume Number | 92 |
| e-ISSN | 10958630 |
| Journal | Journal of Environmental Management |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-10-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Discipline Science Air Pollutants Chemistry Carbon Dioxide Carbon Conservation Of Natural Resources Methods Floors And Floorcoverings Recycling Adsorption Hydroxides Potassium Compounds Temperature Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Medicine Environmental Engineering Management, Monitoring, Policy and Law |
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