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Anaerobic digestion of domestic wastewater in different salinity levels: the adaptation process
Syazwani, Idrus1, Nik Norsyahariati, Nik Daud2, Amimul Ahsan3.
The effect of osmotic stress was carried out to determine the resistance to salt toxicity using 4 Continuous
Stirred Tank Reactor (CSTR). A CSTR digestion study revealed that digesters seeded with an inoculum
from a conventional mesophilic digester treating municipal wastewater and fed on domestic wastewater
(DW) plus salts were able to acclimate successfully to a final salt concentration of 10 g l-1. The digesters
showed some disturbances during the acclimatisation period as indicated by reductions in specific methane
production (SMP), specific biogas production (SBP), pH and increases in Intermediate Alkalinity /Partial
Alkalinity (1A/PA) ratio and Volatile Fatty Acid (VFA) concentration. This study revealed the order
of disturbance was Sodium Chloride (NaCl) > Potassium Chloride (KCl) > KCl + NaCl. The average
values for SMP after stabilisation were below those in the controlled digester, at 0.335 (controlled),
0.323 (NaCl), 0.316 (KCl + NaCl) and 0.308 l CH4 g-1 COD added (KCl).
Affiliation:
- Universiti Putra Malaysia, Malaysia
- Universiti Putra Malaysia, Malaysia
- Universiti Putra Malaysia, Malaysia
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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3 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (1.1) |
Rank |
Q3 (Agricultural and Biological Sciences (all)) Q3 (Environmental Science (all)) Q3¬¬- (Computer Science (all)) Q3 (Chemical Engineering (all)) |
Additional Information |
SJR (0.174) |
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