Changes in carbon and nitrogen pool during in-situ aeration of old landfills under varying conditions

Prantl, R.; Tesař, Miroslav; Huber-Humer, Marion; Lechner, P.

doi:10.1016/j.wasman.2005.11.010

Cited by 58 publications

(53 citation statements)

References 2 publications

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“…Increased organic loads in the leachate have been observed by the current study and Oncu et al [17]. COD decrease after aeration was reported by Ritzkowski et al [5], Prantl et al [14] and Raga and Cossu [20]. Many factors including waste age, waste types as well as aeration procedures, might play different roles in these studies leading to different results.…”

Section: Future Perspectivessupporting

confidence: 49%

See 1 more Smart Citation

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Tong

Yin

et al. 2015

Journal of Hazardous Materials

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Section: Future Perspectivessupporting

confidence: 49%

“…To optimize the aeration process, a series of operation parameters has been studied such as air pressure, aeration rate, air injection mode (active or passive, continuous or intermittent), aeration efficiency, moisture and temperature control, and off-gas treatment [6,[11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Tong

Yin

et al. 2015

Journal of Hazardous Materials

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“…Večinski delež, približno 90 odstotkov razkrojenih organskih ogljikovih spojin, se pretvori v deponijski plin, majhen delež preide v izcedne vode. Iz tone nepredelanih odpadkov, odloženih na odlagališče, se v odvisnosti od deleža razgradljivega ogljika sprosti od 120 m 3 do180 m 3 deponijskega plina, ki je pretežno sestavljen iz 60 odstotkov metana (CH 4 ) in 40 odstotkov ogljikovega dioksida (CO 2 ) [22]. Okolju škodljiv je predvsem metan, ker je toplogredni plin s potencialom globalnega segrevanja 25 v 100 letih, kar pomeni, da v povprečju v 100 letih vsak kilogram CH 4 ogreje Zemljo 25-krat bolj kot enaka masa CO 2 .…”

Section: Komunalni Odpadki In Delež Biološko Razgradljivih Odpadkovunclassified

Collection of Post-Consumer Textile Waste in Assembly Centres across Slovenia

Žurga¹,

Tavčer²

2014

TEK

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IzvlečekOhranjanje naravnih virov, zmanjšanje škodljivih vplivov nastajanja odpadkov, porabe odlagališčnega prostora in s tem povezanega plačevanja okoljskih taks, preskrba z nizkocenovnimi materiali ter ustvarjanje novih »zelenih« delovnih mest so lahko rezultat organiziranega, smotrnega zbiranja, ki omogoča ponovno uporabo in recikliranje. Ločeno zbiranje odpadkov pomeni strokovno in premišljeno zbiranje, s katerim preprečujemo odlaganje materialov zaradi uhajanja potencialno nevarnih snovi v okolje, kot so odlagališč-ni plini, odcedne vode, prah in smrad. EU je izdala direktivo, v kateri narekuje ločeno zbiranje tekstilnih odpadkov v temu namenjenih zabojnikih, ki se nahajajo v zbirnih centrih. Zbirni centri so objekti za prevzemanje odpadkov, vključno z njihovim predhodnim razvrščanjem in predhodnim skladiščenjem za namene prevoza do naprave za obdelavo odpadkov. V članku so predstavljeni količina, vrsta in nadaljnje ravnanje z odpadnimi oblačili in tekstilijami, zbranimi v zbirnih centrih po Sloveniji v letu 2012. Podatki so bili zbrani z uporabo deskriptivne metode (spletnega vprašalnika v kombinaciji z osebnim intervjujem) ter obdelani z uporabo deskriptivne statistike. V raziskavo je bilo vključenih 54 od 59 (n = 54) upravljavcev zbirnih centrov, urejenih na območju Slovenije. Večina (78 %) zbirnih centrov zbira oblačila in tekstilije, le 15 odstotkov jih zbira izključno oblačila, medtem ko jih je 2 % prenehalo z ločenim zbiranjem. Povprečni zbirni center, ki zbira oblačila in tekstilije, je v letu 2012 zbral približno 15 ton odpadnih oblačil in tekstilij, medtem ko je povprečni zbirni center, ki zbira le oblačila, zbral približno štiri tone oblačil. Sodelujoči ocenjujejo, da je kakovost zbranih oblačil višja v primerjavi z zbranimi tekstilijami. Med oblačili so zbrali največ majic in srajc ter vrhnjih oblačil, med tekstilijami vzmetnice in posteljnino. Večina upravljavcev zbirnih centrov meni, da ima zbrani tek stil ekonomsko vrednost ter da že obstaja zanimanje za prevzem tekstila. V članku so predstavljeni količi-na, vrsta in nadaljnje ravnanje z odpadnimi oblačili in tekstilijami, zbranimi v zbirnih centrih po Sloveniji. Ključne besede: popotrošniški tekstilni odpadki -količina, vrsta, nadaljne ravnanje, zbirni centri, odpadna oblačila,odpadne tekstilje, zbiranje odpadnega tekstila

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“…Apart from natural processes, the forced aeration of landfills has been put forward as method measure for in-situ stabilization of older landfills containing organic wastes (e.g. Heyer et al 1999;Prantl et al 2006;Ritzkowski et al 2006;Ritzkowski andStegmann 2010, 2012). During in-situ aeration, the oxidation of a formerly anaerobic landfill body affects the degradation of organic matter and thereby also nitrogen transformation processes (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…During in-situ aeration, the oxidation of a formerly anaerobic landfill body affects the degradation of organic matter and thereby also nitrogen transformation processes (Fig. 1) towards increased nitrification (Prantl et al 2006), nitrous oxide formation (Rinne et al 2005), and hypothetically, increased microbial uptake . A simplified overview of the nitrogen cycle with respect to landfills is given in Fig.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen pools and flows during lab-scale degradation of old landfilled waste under different oxygen and water regimes

2015

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Nitrogen emissions from municipal solid waste (MSW) landfills occur primarily via leachate, where they pose a long-term pollution problem in the form of ammonium. In-situ aeration was proposed as a remediation measure to mitigate nitrogenous landfill emissions, turning the anaerobic environment to anoxic and subsequently aerobic. As in-depth studies of the nitrogen cycle during landfill aeration had been largely missing, it was the aim of this work to establish a detailed nitrogen balance for aerobic and anaerobic degradation of landfilled MSW based on lab-scale experiments, and also investigating the effect of different water regimes on nitrogen transformation during aeration. Six landfill simulation reactors were operated in duplicate under different conditions: aerated wet (with water addition and recirculation), aerated dry (without water addition) and anaerobic (wet). The results showed that more than 78 % of the initial total nitrogen (TNinit) remained in the solids in all set ups, with the highest nitrogen losses achieved with water addition during aeration. In this case, gaseous nitrogen losses (as N2 due to denitrification) amounted up to 16.6 % of TNinit and around 4 % of TNinit was discharged via leachate. The aerated dry set-up showed lower denitrification rates (2.6-8.8 % of TNinit was released as N2), but was associated with the highest N2O emissions (3.8-3.9 % of TNinit). For the anaerobic treatment the main pathway of nitrogen discharge was the leachate, where NH4 accounted for around 8 % of TNinit. These findings provide the basis for improved management strategies to enhance nitrogen removal during in-situ aeration of old landfills.

show abstract

Changes in carbon and nitrogen pool during in-situ aeration of old landfills under varying conditions

Cited by 58 publications

References 2 publications

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Collection of Post-Consumer Textile Waste in Assembly Centres across Slovenia

Nitrogen pools and flows during lab-scale degradation of old landfilled waste under different oxygen and water regimes

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