The performance of S2O82- / Zn2+ oxidation system in landfill leachate treatment
Küçük Resim Yok
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, the application of combined S2O82- / Zn2+ oxidation was investigated for landfill leachate treatment. Several dosage ratios (g/g) from Sodium persulfate (Na2S2O8 M = 238 g/mol) and Zinc chloride (ZnCl4 207.1920 g/mole) were added to the leachate sample in one oxidation reactor. Results showed that the maximum removal efficiencies for COD (88%) and colour (98%) were obtained using 2 g/12 g S2O82- / Zn2+ dosage, pH (11), and 120 min reaction time, while the maximum removal for NH3-N (60%) was obtained at 180 min of oxidation. In addition, the biodegradability (BOD5/COD) ratio was improved from 0.07 to 0.19. Moreover, the performance of the new oxidation processes (S2O82- / Zn2+) compared to other related treatment processes such as S2O82- oxidation alone, ZnCl4 coagulation, S2O82- oxidation followed by ZnCl4 coagulation and ZnCl4 coagulation followed by S2O82-. The results of S2O82- / Zn2+ oxidation achieved higher removal for COD, colour and ammonia compared to other related processes. The results revealed that S2O82- / Zn2+ oxidation system can be recommended as an efficient process for organic and ammonia removal from leachate.
Açıklama
Anahtar Kelimeler
Leachate, Oxidation, Activation, Treatment, Removal, Persulfate
Kaynak
Physics and Chemistry of the Earth
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
120
