Peer-Reviewed Journal Details
Mandatory Fields
Tabassum, Muhammad Rizwan; Xia, Ao; Murphy, Jerry D.
2017
August
Energy
Comparison of pre-treatments to reduce salinity and enhance biomethane yields of Laminaria digitata harvested in different seasons
Validated
Optional Fields
Seaweed Pre-treatment Anaerobic digestion Biomethane
140
1
546
551
Pre-treatment can enhance anaerobic digestion of seaweed; however, seasonal variation in the biochemical composition of seaweed has a significant impact on the pre-treatment effect. In this study, various pre-treatments were employed for the brown seaweed Laminaria digitata harvested in March (with high ash content and low carbon to nitrogen (C:N) ratio) and September (with low ash content and high C:N ratio). Washing of L. digitata harvested in March with hot water (defined as 40á░C) removed 54% of the ash and improved the volatile solids (VS) content by 31% leading to an improved biomethane yield of 282áLáCH4 kg VS-1. This pre-treatment affected a 16% increase in biodegradability, reduced salt accumulation in the digestate by 54%, and increased specific methane yield per wet weight by 25%. This level of effect was not noted for seaweed harvested in September, when the biodegradability is higher.
0360-5442
http://www.sciencedirect.com/science/article/pii/S0360544217314469
10.1016/j.energy.2017.08.070
Grant Details