Data relating to emissions of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from industrial boilers

Abstract

Polychlorinated-dibenzo-para-dioxins (PCDDs) and Polychlorinated-dibenzofurans (PCDFs) contamination in ecosystems has been a major concern, however, no information is available about the atmospheric contents and emission profiles in different types of fuels from industrial boilers in Thailand, Lao PDR, and Cambodia. Nine air and bottom ash samples (n = 18) were collected from three industrial boilers using U.S.EPA Method 23 and U.S.EPA Method 8290, respectively. All samples were successfully quantified by two High Resolution Chromatography-High Resolution Mass Spectrometry (HRGC-HRMS) namely Waters Autospec Premier and Waters Autospec Ultima. This investigation elucidates the impacts of fuel type on the emissions of PCDDs and PCDFs from three different industrial boilers. It appears plausible to affirm that fuel types play an important role on PCDD/PCDF emission levels from industrial boilers. The results of PCDD/PCDF concentrations should be considered as baseline data for promoting Best Available Technique (BAT) and Best Environmental Practise (BEP) in order to reduce dioxin emissions from industrial boilers in Southeast Asian countries.

Gaseous emissions from co‐combustion of biosolids from the meat processing industry with wood

“…Luthardt et al 72 analyzed the presence of PCDD/PCDF in flue gas samples from eight different sources (industrial plants and crematories) and found that the main congener emitted in all cases studied was the 2,3,4,7,8-PeCDF. Pongpianchan et al,71 observed the dominance of 2,3,7,8-TCDF, in addition to the three dominant ones found in this study, thus agreeing with these findings. Since the formation of PCDD/PCDF can occur due to combustion and post combustion conditions, further investigation would be needed to identify the reasons for the difference found between the pilot and plant scales.…”

“…Emissions of PAH measured during the co-combustion tests performed with B3SD(1:3) at pilot and plant scales compared to emission standard at O 2ref = 7% American31 regulations used as references (0.50, 0.14, 0.10, and 0.41 ng Nm −3 , respectively, at O 2ref = 7%), while the mean value found at plant scale was lower than the Brazilian27 and American31 standards. The total PCDD/PCDF concentration found at plant scale was very close to that reported by Pongpiachan et al71 and previously cited. None of the compounds from the PCDD group were detected during the pilot-scale co-combustion tests with the mixture B3SD (1:3).…”

Exploring organo-bentonite adsorption properties for biphenyl removal from organic-aqueous media: kinetic study and industrial perspective

“…The overall composition of the other oxides (Na2O, CaO, SO3 and TiO2) reached a percentage of 7% wt, by organo-modification of Bent with alkylammonium surfactant, substituted by compensating cations in the clay. The representative formulas of the clay Bent and Bent-CTAB were defined by the equations to calculate the molar mass M (4) and the number of atoms N of the clay mesh (5), highlighting the bonds between the different constituents of the clay.…”

“…Despite the global ban on PCB production, large quantities of these Persistent Organic Pollutants (POPs) are still present in the environment [3]. It is important to note that PCBs are regarded as precursors for the formation of highly toxic substances, specifically polychlorinated dibenzofurans (PCDFs) and dibenzodioxins (PCDDs) [4,5]. These hazardous compounds can form spontaneously and uncontrollably when PCBs are released into the environment [6].…”