Study of bioleaching under different hydraulic retention time for enhancing the dewaterability of digestate

Verfasser / Beitragende:
[Linshuai Li, Jingqing Gao, Songfeng Zhu, Yonghong Li, Ruiqin Zhang]
Ort, Verlag, Jahr:
2015
Enthalten in:
Applied Microbiology and Biotechnology, 99/24(2015-12-01), 10735-10743
Format:
Artikel (online)
ID: 605502544
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024 7 0 |a 10.1007/s00253-015-6895-4  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00253-015-6895-4 
245 0 0 |a Study of bioleaching under different hydraulic retention time for enhancing the dewaterability of digestate  |h [Elektronische Daten]  |c [Linshuai Li, Jingqing Gao, Songfeng Zhu, Yonghong Li, Ruiqin Zhang] 
520 3 |a Dewatering of kitchen waste digestate is a key problem to solve so as to increase the application of kitchen waste after anaerobic digestion. In this study, the effects of bioleaching under different hydraulic retention time (HRT=2, 2.5, and 3days) on dewaterability of kitchen waste digestate were evaluated. A 12-stage plug flow bioreactor with 180L working volume was used for digestate bioleaching. The bioleached digestate under different HRTs were collected and dewatered by plate-and-frame filter press. The results showed that the moisture contents of digestate cakes were 67.87% at 2days of HRT, 58.06% at 2.5days of HRT, and 54.45% at 3days of HRT, respectively, indicating the longer the HRT, the lower the moisture content of filter cake. Balanced between the cost and practical need, 2.5days can be used as the HRT in engineering application. Under the condition of HRT of 2.5days, the pH, specific resistance to filtration (SRF), capillary suction time (CST), and sedimentation rate of digestate changed from the initial values of 8.08, 210.6s, 23.4×1012mkg−1 and 10% to 3.21, 32.7s, 2.44×1012mkg−1 and 76.8%, respectively. Based on the observations above, the authors conclude that bioleaching technology is an effective method to enhance digestate dewaterability and reduce the cost of subsequent reutilization. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Kitchen waste digestate  |2 nationallicence 
690 7 |a Bioleaching  |2 nationallicence 
690 7 |a Plug-flow bioreactor  |2 nationallicence 
690 7 |a Hydraulic retention time  |2 nationallicence 
690 7 |a Dewatering  |2 nationallicence 
700 1 |a Li  |D Linshuai  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
700 1 |a Gao  |D Jingqing  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
700 1 |a Zhu  |D Songfeng  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
700 1 |a Li  |D Yonghong  |u School of Pharmaceutical Sciences, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
700 1 |a Zhang  |D Ruiqin  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
773 0 |t Applied Microbiology and Biotechnology  |d Springer Berlin Heidelberg  |g 99/24(2015-12-01), 10735-10743  |x 0175-7598  |q 99:24<10735  |1 2015  |2 99  |o 253 
856 4 0 |u https://doi.org/10.1007/s00253-015-6895-4  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00253-015-6895-4  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Li  |D Linshuai  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Gao  |D Jingqing  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Zhu  |D Songfeng  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Li  |D Yonghong  |u School of Pharmaceutical Sciences, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Zhang  |D Ruiqin  |u Research Institute of Environmental Sciences, College of Chemistry and Molecular Engineering, Zhengzhou University, 450001, Zhengzhou, China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Applied Microbiology and Biotechnology  |d Springer Berlin Heidelberg  |g 99/24(2015-12-01), 10735-10743  |x 0175-7598  |q 99:24<10735  |1 2015  |2 99  |o 253