Wymywalność zanieczyszczeń z popiołów lotnych ze spalania biomasy

Uliasz-Bocheńczyk, A.; Pawluk, Aleksandra; Sierka, Joanna

doi:10.1515/gospo-2015-0032

Cited by 15 publications

(19 citation statements)

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“…Fly ashes resulting from the co-firing of hard coal and biomass, as described in Uliasz--Bocheńczyk et al 2016, were subjected to the carbonation process. The above mentioned ashes are the result of the co-combustion of forest biomass (80%) and agricultural waste (20%) with hard coal in a conventional pulverized boiler For the analyzed fly ashes resulting from the co-firing of biomass, the mentioned maximum theoretical carbon dioxide binding capacity is 8.03%, which is a relatively low result compared to the maximum capacity calculated for fly ash from hard coal combustion -24.6% (Mazzella et al 2016); fly ash from biomass combustion -around 38% (Gunning et al 2010); fly ash from lignite combustion (Uliasz-Bocheńczyk 2009), or the mixture of fly ash and desulphurization products.…”

Section: The Materials Used For Testingmentioning

confidence: 99%

The mineral sequestration of CO2 with the use of fly ash from the co-combustion of coal and biomass

Uliasz-Bocheńczyk¹,

Pawluk²,

Pyzalski³

2017

Gospodarka Surowcami Mineralnymi

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Summary As a result of energy production processes, the power industry is the largest source of CO2 emissions in Poland. Emissions from the energy sector accounted for 52.37% (162 689.57 kt) of the total emissions in 2015, which was estimated at 310.64 million tons of CO2. In recent years, the tightening of regulations on the use of renewable energy sources has resulted in an increased amount of biomass used in the professional energy industry. This is due to the fact that the CO2 emissions from biomass combustion are not included in the total emissions from the combustion of fuels, resulting in the zero- emission factor for biomass. At the same time, according to the hierarchy of waste management methods, recycling is the preferred option for the management of by-products generated during energy production. The fly ashes resulting from the biomass combustion in pulverized boilers (which, due to their chemical composition, can be classified as silicate ash) were subjected to analysis. These ashes can be classified as waste 10 01 17 - fly ash from co-firing other than mentioned in 10 01 16 according to the Regulation of the Minister of the Environment of December 9, 2014 on waste catalogues. The maximum theoretical carbon dioxide binding capacity for the analyzed fly ashes resulting from the co-combustion of biomass is 8.03%. The phase composition analysis of the fly ashes subjected to carbonation process has shown, in addition to the components identified in pure fly ash samples (SiO2, mullite), the presence of calcium carbonate − calcite − the primary product of the carbonation process, as indicated by the results of both X-ray and thermogravimetric analysis.The degree of carbonation has been determined based on the analysis of the results of the phase composition of fly ash resulting from the co-firing of biomass and bituminous coal. The calculated degree of carbonation amounted to 1.51%. The carbonation process is also confirmed by the lowered pH of the water extracts, decreasing from 11.96 for pure ashes to 8.7 for CO2 treated fly ashes. In addition, the carbonation process has reduced the leaching of pollutants, most notably chlorides, sulphates, and potassium.

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Section: The Materials Used For Testingmentioning

confidence: 99%

The mineral sequestration of CO2 with the use of fly ash from the co-combustion of coal and biomass

Uliasz-Bocheńczyk¹,

Pawluk²,

Pyzalski³

2017

Gospodarka Surowcami Mineralnymi

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“…Popioły ze spalania paliwa w kotłach konwencjonalnych wykazują niższą wymywalność jonów niż w przypadku zastosowania technologii fluidalnej. Badania wymywalności róż-nych pierwiastków dla popiołów lotnych z: węgla kamiennego, węgla brunatnego oraz biomasy zostały przeprowadzone przez Uliasz-Bocheńczuk (tabela 4) [36]. Wyniki badań wykazały bardzo wysoką wymywalność jonów potasu, chloru, chromu oraz siarczanów z popiołów ze spalania biomasy w porównaniu do popiołów z węgla kamiennego [36].…”

Section: Charakterystyka Fizykochemiczna Popiołów Lotnychunclassified

Możliwość Wykorzystania Popiołów Lotnych W Celu Poprawy Odwadniania Osadów Ściekowych

2017

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Wzrost zapotrzebowania na energię wiąże się ze spalaniem paliw i tym samym wytwarzaniem coraz większej ilości ubocznych produktów spalania (UPS), w tym popiołów lotnych. Rocznie w Polsce powstaje około 4,2 mln ton popiołu, z czego tylko niewielką część poddaje się procesowi recyklingu (zwłaszcza w sektorze budowlanym). Ograniczenia dotyczące komercyjnego wykorzystania popiołów wymagają poszukiwania nowych metod ich zagospodarowania, korzystnych pod względem ekologicznym, ekonomicznym oraz prawnym. Specyficzne właściwości fizykochemiczne umożliwiają zastosowanie popiołów jako substancji kondycjonującej osady ściekowe przed procesem odwadniania. Prezentowana praca zawiera studium literatury dotyczącej właściwości oraz wpływu popiołów lotnych ze spalania różnych paliw na stopień odwodnienia i skład mikrobiologiczny osadów ściekowych. W artykule przedstawiono również korzyści ekonomiczne związane z zastosowaniem popiołów w procesach przeróbki osadów ściekowych. Zastosowanie ubocznych produktów spalania paliw w oczyszczalniach ścieków stanowi nowe zagadnienie w zakresie gospodarki osadami ściekowymi.Słowa kluczowe: osady ściekowe, popioły lotne, odwadnianie, kondycjonowanie, odzysk, utylizacja, gospodarka osadami ściekowymi WprowadzeniePopioły lotne są odpadami energetycznymi, powstającymi w wyniku spalania surowców energetycznych w elektrociepłowniach. Stanowią uboczny produkt spalania, wychwytywany ze spalin za pomocą urządzeń odpylających, umieszczonych za komorą spalania. Zgodnie z Rozporządzeniem Ministra Śro-1

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“…The high level of leachability of contaminants from fly ashes from combustion of biomass depends mostly on the type of fuel, so it can be easily limited by mixing them with ashes from combustion of coal in conventional and fluidized boilers [9].…”

Section: Materials Used In the Researchmentioning

confidence: 99%

Effect of grinding process on the level of leachability of the contaminants from the fly ashes from combustion of biomass

Pawluk

2016

E3S Web Conf.

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Abstract. The most commonly used renewable energy source in Polish energy production companies is solid biomass which is used both as a separate fuel or as a component co-incinerated together with (mostly) hard coal. During its incineration the biomass generates by-products with diverse and variable physicochemical properties. The most of the waste from production of electricity and/or heat are fly ashes. The fly ashes from combustion of biomass are a particular kind of waste distinguished by high level of leaching of contaminants and variable chemical composition. The by-products from combustion can only be used in production when their physicochemical properties meet specific parameters. This article presents results of research on leachability of chemical pollutants from dry ashes of combustion or co-combustion of biomass. The study of the impact of grinding of ashes on the level of their leachability was also conducted. Ashes from combustion of biomass as well as their mixture with fluidized ash from combustion of charcoal were submitted to grinding process. Afterwards level of leachability was measured on them to determine prospect of utility in mining technologies.

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Wymywalność zanieczyszczeń z popiołów lotnych ze spalania biomasy

Cited by 15 publications

References 0 publications

The mineral sequestration of CO2 with the use of fly ash from the co-combustion of coal and biomass

The mineral sequestration of CO2 with the use of fly ash from the co-combustion of coal and biomass

Możliwość Wykorzystania Popiołów Lotnych W Celu Poprawy Odwadniania Osadów Ściekowych

Effect of grinding process on the level of leachability of the contaminants from the fly ashes from combustion of biomass

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