Affiliation:
1. Faculty of Ocean Engineering Technology & Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia
2. Faculty of Civil Engineering Technology, Universiti Malaysia Pahang (UMP), 26300 Gambang, Kuantan, Pahang, Malaysia
Abstract
This study looked into the possibility of using peroxydisulfate pretreatment to enhance biogas production
from anaerobic fermentation of algal slurry. The results demonstrate that a peroxydisulfate added
system with a dose of 0.02 g peroxydisulfate/g algal sludge TSS produces the most accumulative
methane after 61 days of fermentation. At 0.02, 0.03, 0.06, 0.2, 0.3, 0.6, and 1.2 g peroxydisulfate/g
algal sludge TSS cumulative methane generation was 1.16, 1.09, 1.15, 1.14, 1.09, 0.77, and 0.16 times
higher than control. After 120 minutes of pre-treatment, the SCOD in the system continued to rise
when the peroxydisulfate dosage was enhanced. To simulate the methane yield, a one-substrate model
might be utilized. After dosing with peroxydisulfate, the hydrolysis rate reduced, and the maximum
resultant and anticipated cumulative methane output was achieved with 0.02 g peroxydisulfate/g algal
sludge TSS. After digestion, microcystin-LR in algae slurry was mostly eliminated. Heavy metals
could be released from algae cells into the effluent as a result of the greater peroxydisulfate dosage.
From the fermented effluent, sludge recapture was 0.09 m3 sludge/m3. The supplementation of
peroxydisulfate to algae slurry may boost cumulative methane generation while also lowering
microcystin-LR levels.
Publisher
Asian Journal of Chemistry