Valorization of palm oil wastes into oyster mushrooms (Pleurotus HK-37) and biogas production
| dc.contributor.author | David, Aneth | |
| dc.contributor.author | Mshandete, Anthony | |
| dc.date.accessioned | 2024-02-08T07:00:22Z | |
| dc.date.available | 2024-02-08T07:00:22Z | |
| dc.date.issued | 2023-10-04 | |
| dc.description | This research article was published in the Qeios in 2023 | en_US |
| dc.description.abstract | Continued growth of oil palm cultivation for palm oil production has led to higher post-processing wastes that pose environmental management challenges. The goal of this study was to investigate the co-production of oyster mushroom Pleurotus HK-37 and biogas as a means to add value to palm oil waste fractions and thus reduce their impact on the environment. A total of 9 blends of solid, semi-solid and liquid palm oil waste fractions were subjected to mushroom production and the resulting spent mushroom substrate (SMS) was used for biogas production. There was a significant difference in mushroom yield (t-test, p = 0.00013237) and biological efficiency (t-test, p = 0.00044955), with the highest values obtained from substrate formulation no. 3 (1:1 PMF and EFB (each 49% total weight) supplemented with POME and SD at 1%). Biogas production was also significantly different among both fresh and pretreated (SMS) waste fractions. The highest biogas volume, methane content and methane yield were observed from SMS waste fractions no. 4 (1:1 PMF and EFB (each 44% total weight) supplemented with PPC and PKS at 5% and POME and SD at 1%). Overall, pretreatment of palm oil processing waste with oyster mushrooms increased biogas production and methane yield per kg volatile solids by 102.78% compared to untreated waste. This study has demonstrated that mushroom and biogas production are viable options for the management of palm oil processing waste fractions and thus promoting a circular economy. Further studies should optimize their production and conduct techno-economic | en_US |
| dc.identifier.uri | https://doi.org/10.32388/YS6L57 | |
| dc.identifier.uri | https://dspace.nm-aist.ac.tz/handle/20.500.12479/2457 | |
| dc.language.iso | en | en_US |
| dc.publisher | Qeios | en_US |
| dc.subject | Valorization | en_US |
| dc.subject | Palm oil wastes | en_US |
| dc.subject | Pleurotus HK-37 | en_US |
| dc.subject | African oil palm | en_US |
| dc.subject | Elaeis guineensis | en_US |
| dc.subject | Spent mushroom substrate | en_US |
| dc.subject | Circular economy | en_US |
| dc.title | Valorization of palm oil wastes into oyster mushrooms (Pleurotus HK-37) and biogas production | en_US |
| dc.type | Article | en_US |