A Win–Win Combination to Inhibit Persistent Organic Pollutant Formation via the Co-Incineration of Polyvinyl Chloride E-Waste and Sewage Sludge
| Autor: | Juan A. Conesa, Samuel S. Nuñez, Nuria Ortuño, Ignacio Aracil, Gerard Gandon-Ros, María Francisca Gómez-Rico |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Química, Universidad de Alicante. Instituto Universitario de Ingeniería de los Procesos Químicos, Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN), Ingeniería para la Economía Circular (I4CE) |
| Rok vydání: | 2021 |
| Předmět: |
Polymers and Plastics
chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Combustion 01 natural sciences Article lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry Organic compounds Chlorine Sewage sludge co-incineration Inhibition 0105 earth and related environmental sciences Dioxin co-combustion Pollutant Co-combustion Persistent organic pollutant sewage sludge Co-incineration General Chemistry dioxin 021001 nanoscience & nanotechnology Incineration Ingeniería Química PVC Polyvinyl chloride chemistry Environmental chemistry 0210 nano-technology organic compounds Polychlorinated dibenzofurans Sludge |
| Zdroj: | Polymers Volume 13 Issue 5 Polymers, Vol 13, Iss 835, p 835 (2021) RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| ISSN: | 2073-4360 2016-7660 |
| DOI: | 10.3390/polym13050835 |
| Popis: | Persistent organic pollutant inhibition in the combustion process of polyvinyl chloride (PVC) by prior addition of an inhibitor is currently being studied, reducing the emission of pollutants, and thus reducing the large amount of waste PVC destined for landfill. In this work, the use of sewage sludge (SS) as an alternative to chemical inhibitors to improve the quality emissions of the incineration of polyvinyl chloride waste (PVC e-waste) was studied and optimized. Different combustion runs were carried out at 850 °C in a laboratory tubular reactor, varying both the molar ratio Ri (0.25, 0.50, 0.75) between inhibitors (N + S) and chlorine (Cl) and the oxygen ratio λ (0.15, 0.50) between actual oxygen and stoichiometric oxygen. The emissions of several semivolatile compounds families such as polycyclic aromatic hydrocarbons (PAHs), polychlorobenzenes (ClBzs), and polychlorophenols (ClPhs), with special interest in the emissions of the most toxic compounds, i.e., polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dl-PCBs), were analyzed. A notable decrease in PCDD/F and dl-PCB formation was achieved in most of the experiments, especially for those runs performed under an oxygen-rich atmosphere (λ = 0.50), where the addition of sludge was beneficial with inhibition ratios Ri ≥ 0.25. An inhibition ratio of 0.75 showed the best results with almost a 100% reduction in PCDD/F formation and a 95% reduction in dl-PCB formation. Support for this work was granted by CTQ2016-76608-R project and the scholarship BES-2017-080382 from the Ministry of Economy, Industry and Competitiveness (Spain). GC-MS/QQQ used in the analysis was supported by Project IDIFEDER/2018/004 by the Generalitat Valenciana (Spain). |
| Databáze: | OpenAIRE |
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