Umrah Rajab trip and half-year vacation for the Hijri year 1444 AH
Receiving and honoring the mobile clan of the Faculty of Science
The college's annual celebration of the International Day of the Arabic Language
Integration of two-stage anaerobic digestion process with in situ biogas upgrading . Bioresource Technology 128475.
Research Abstract
Research Date
Research Department
Research Journal
Bioresource Technology
Research Member
Research Pages
128475
Research Publisher
Elsevier
Research Rank
q1
Research Vol
369,
Research Website
https://doi.org/10.1016/j.biortech.2022.128475
Research Year
2023
Effects of Trace Elements Supplementation on Methane Enhancement and Microbial Community Dynamics in Mesophilic Anaerobic Digestion of Food Waste.
Research Abstract
Batch anaerobic digestion (AD) using food waste (FW) as a substrate with mono trace element (TE) supplementation of Fe, Co, and Ni was simultaneously carried out under mesophilic conditions. The AD of food waste without TE, was severely inhibited by volatile fatty acid (VFA) accumulation. TE supplementation improved VFA conversion and methane production, with Ni and Co groups showing better enhancements to the AD process. The optimal group received 5 mg/L Ni supplementation, increasing methane production from the 211.3 to 489.22 mL g−1 VS. The fermentative microbes in TE groups are strengthened by improving the abundance of Firmicutes while decreasing Proteobacteria. Methanosarcina replaced Methanobrevibacter as the dominant methanogen in the TE supplementation groups. The genera Thermovirga and norank_f_Synergistaceae, which could be syntrophic co-culture with hydrogenotrophic methanogens, were distinctly improved in the Ni and Co groups. This study could shed more lights on understanding the TE supplementation effects in AD.
Research Date
Research Department
Research Journal
Waste and Biomass Valorization
Research Member
Research Publisher
Springer
Research Website
https://link.springer.com/article/10.1007/s12649-022-02024-0
Research Year
2022
Thiol, volatile and semi-volatile compounds alleviate the stress of zinc oxide
Research Abstract
Pomegranate trees are tropical and subtropical shrubs with nutritional benefits and pharmaceutical and therapeutic uses. Antioxidative systems protect the structure and function of cellular membranes. This study demonstrated the connection between oxidative stress generated by excess nanoparticles ZnO (ZnO-NPs) accumulation in pomegranate calli and the involvement of thiol groups and volatile and semi-volatile compounds in alleviating this stress. The effect of the non-enzymatic antioxidant system was studied using callus treated with three levels of ZnO-NPs or bulk particles (ZnO-BPs). With rising ZnO levels in the media, callus growth was gradually decreased by ZnO in both forms (NPs and BPs). Malondialdehyde (MDA) measurements revealed that different concentrations of both forms promoted lipid peroxidation. The supply of both forms had a considerable stimulatory influence on the cysteine (Cys
Research Date
Research Department
Research Member