Abstract：
:Steel-mill waste rolling oil (SmWRO) is considered as hazardous substance with high treatment and disposal fees. Anaerobic process could not only transform the hazardous substance into activated sludge, but also generate valuable biogas. This study aimed at studying the biochemical methane potential of SmWRO under inoculum to substrate VS ratios (ISRs) of 0.25, 0.5, 1, 1.5, 2 and 3 using septic tank sludge as inoculum in mesophilic and thermophilic conditions, with blank tests for control. Specific biogas yield (mL/g VS(added)), net biogas yield (mL/g VS(removed)) and VS removal were analyzed. The ANOVA results indicated great influence of ISR and temperature on studied parameters. ISR of 1.5 at 55°C and ISR of 1.5 and 2 at 35°C were suggested with the highest specific biogas yield (262-265 and 303mL/g VS(added)). Kinetic analysis showed that Gompertz model fit the experimental data best with the least RMSE and largest R(2).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ma H,Li Z,Yin F,Kao W,Yin Y,Bai Xdoi
10.1016/j.biortech.2013.10.051subject
Has Abstractpub_date
2014-01-01 00:00:00pages
106-12eissn
0960-8524issn
1873-2976pii
S0960-8524(13)01631-3journal_volume
151pub_type
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