| Title | Landfill leachate treatment: Comparison of standalone electrochemical degradation and combined with a novel biofilter |
| Abstract | Raw leachate and a biological effluent coming from the same raw leachate that has been biologically treated
in a new type of biological reactor, were electrochemically treated. A batch-type electrolytic cell using
two patented DSA electrodes was employed. Raw leachate, treated for 240 min at a current density of
200 mA/cm2, falls within the sewer discharge limits set by Italian legislation for the COD. Instead, effluent
obtained through combined biological and electro-oxidation treatment (by using 83 mA/cm2 and
133 mA/cm2) has a COD such that could be discharged into the sewer and, after applying a current density
equal to 200 mA/cm2 after 240 min, has a COD value such that can even discharged into receiving
water bodies. The electrochemical oxidation carried out is only effective on nitrogen ammonia through
indirect electro-oxidation; it is not effective on other nitrogen-containing species. In any case, where
ammonia is present (i.e., in the raw leachate), 82% is removed by the end of the test (i.e., after
240 min of electrolysis) at 200 mA/cm2. Also, for the raw leachate, chloramine formation is most marked
at low current densities. Nevertheless, the toxicity does not appear to be affected; in fact, decrease
regardless of the applied current density. |
| Source | Chemical engineering journal ( Print) 288, pp. 87–98 |
| Keywords | Landfill leachate; Electro-oxidation; AOX |
| Journal | Chemical engineering journal ( Print) |
| Editor | Elsevier Sequoia, Lausanne, Svizzera |
| Year | 2016 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.cej.2015.11.069 |
| Authors | Del Moro G., Prieto-Rodríguez L., De Sanctis M., Di Iaconi C., Malato S., Mascolo G. |
| Text | 343122 2016 10.1016/j.cej.2015.11.069 Scopus 2 s2.0 84949639553 ISI Web of Science WOS WOS 000370085900010 Landfill leachate; Electro oxidation; AOX Landfill leachate treatment Comparison of standalone electrochemical degradation and combined with a novel biofilter Del Moro G., Prieto Rodriguez L., De Sanctis M., Di Iaconi C., Malato S., Mascolo G. Istituto di Ricerca Sulle Acque, Consiglio Nazionale delle Ricerche, Viale F. De Blasio 5, 70132 Bari, Italy; Plataforma Solar de Almeria, CIEMAT, Carretera Senes, km 4, 04200 Tabernas, Almeria, Spain Raw leachate and a biological effluent coming from the same raw leachate that has been biologically treated in a new type of biological reactor, were electrochemically treated. A batch type electrolytic cell using two patented DSA electrodes was employed. Raw leachate, treated for 240 min at a current density of 200 mA/cm2, falls within the sewer discharge limits set by Italian legislation for the COD. Instead, effluent obtained through combined biological and electro oxidation treatment by using 83 mA/cm2 and 133 mA/cm2 has a COD such that could be discharged into the sewer and, after applying a current density equal to 200 mA/cm2 after 240 min, has a COD value such that can even discharged into receiving water bodies. The electrochemical oxidation carried out is only effective on nitrogen ammonia through indirect electro oxidation; it is not effective on other nitrogen containing species. In any case, where ammonia is present i.e., in the raw leachate , 82% is removed by the end of the test i.e., after 240 min of electrolysis at 200 mA/cm2. Also, for the raw leachate, chloramine formation is most marked at low current densities. Nevertheless, the toxicity does not appear to be affected; in fact, decrease regardless of the applied current density. 288 Published version https //www.scopus.com/record/display.uri eid=2 s2.0 84949639553 origin=resultslist sort=plf f src=s st1= st2= sid=fc68e175d869acc4208d1519ff2db698 sot=b sdt=b sl=124 s=TITLE%28Landfill leachate treatment%3a Comparison of standalone electrochemical degradation and combined with a novel biofilter%29 relpos=0 citeCnt=34 searchTerm= Landfill leachate treatment Comparison of standalone electrochemical degradation and combined with a novel biofilter Versione pubblicata dell articolo Del Moro et al.2016.pdf Articolo in rivista Elsevier Sequoia 1385 8947 Chemical engineering journal Print Chemical engineering journal Print Chem. eng. j. Print Chemical engineering journal. Print claudio.diiaconi DI IACONI CLAUDIO marco.desanctis DE SANCTIS MARCO guido.delmoro DEL MORO GUIDO giuseppe.mascolo MASCOLO GIUSEPPE TA.P07.002.003 Integrazione di processi chimici e biologici |
