Format

Send to

Choose Destination
See comment in PubMed Commons below
Bioresour Technol. 2014 Sep;167:564-8. doi: 10.1016/j.biortech.2014.06.024. Epub 2014 Jun 16.

Hydrolytic and acidogenic fermentation potential of food waste with source segregated feces-without-urine as co-substrate.

Author information

1
Residues and Resource Reclamation Centre, NEWRI, Nanyang Technological University, #06-08 CleanTech One, 1 Cleantech Loop, 637141, Singapore. Electronic address: rrajinime@yahoo.co.in.
2
Residues and Resource Reclamation Centre, NEWRI, Nanyang Technological University, #06-08 CleanTech One, 1 Cleantech Loop, 637141, Singapore.
3
Residues and Resource Reclamation Centre, NEWRI, Nanyang Technological University, #06-08 CleanTech One, 1 Cleantech Loop, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. Electronic address: jywang@ntu.edu.sg.

Abstract

This study explored a new approach to enhance VFA productivity from anaerobic co-digestion of food-waste (FW) with source-segregated brown-water (BW) [feces-without-urine]. Effort was made to separate urine and BW from the source (using no-mix-toilet) mainly to expedite further treatment and resource-recovery. Effect of alkaline-pH [B] and acclimatized acidogenic inoculum [C] on acidification efficiency was investigated and compared with raw FW+BW co-digestion [A]. Batch-assay results indicated that VFA productivity persists for 144-h with about 615%, 522% and 376% increase in VFA-COD, respectively for 3-conditions [A-C]; which accounted for 70%, 49% and 58% of CODs input, respectively. High butyric-acid was observed in [A] and [C], followed by acetic, propionic-acids; whereas, abundant acetic-acid (86% of TVFA) was observed in [B], which are the most favorable-forms for methane production or other value-added-products. For 144-h of acidification, this study validated the feasibility of maximizing VFA-yield by 7-12 times compared to FW or BW as a sole-substrate.

KEYWORDS:

Acidogenic potential; Brown-water; Food-waste; Hydrolysis; Volatile fatty acids

PMID:
25022801
DOI:
10.1016/j.biortech.2014.06.024
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center