Lu Feng
Forsker
Vedlegg
CVBiografi
Forskningsarbeidene mine tar primært sikte på å styrke anaerob fordøyelsesbasert sirkulær økonomi, rollen til anaerob fordøyelsesprosess på økologisk landbruk, dens effekt på resirkulering og flytting av næringsstoffene, og innvirkning på jords fruktbarhet og klimagassutslipp. For tiden har jeg interesser i å utvikle innovative bioteknologier for å konvertere organiske rester, til bioenergi, organiske syrer, protein, biometanering og syngassfermentering.
Sammendrag
Addressing the issues of soil degradation and declining crop quality caused by the excessive application of chemical fertilizers, this study prepared a cyanobacterial–bamboo growth elicitor (CBGE) from cyanobacterial and bamboo powder through acid-hydrolysis technology and then co-applied with cyanobacterial biochar (CB). Five pot treatments were established: control (CK), root-applied CB (BR), soil-applied CB (BF), root-applied CBGE-modified CB (LZBR), and soil-applied CBGE-modified CB (LZBF). The results demonstrated that CBGE was rich in essential macronutrients (N, P, K) and bioactive substances including polysaccharides and dipeptides, while cyanobacterial biochar, with its abundant hydroxyl/carboxyl groups, showed strong adsorption of CBGE organic components. During cultivation, the LZBR treatment exhibited comprehensive advantages in improving rhizosphere soil organic carbon, humic substances, and cation exchange capacity. Environmental risk assessment indicated that soil heavy metal levels and associated health risks were low across all treatments, with no obvious short-term adverse effects observed. Soil application (BF, LZBF) maintained Bradyrhizobium dominance, whereas root application (BR, LZBR) enriched Chryseobacterium and Pseudomonas, driving organic matter mineralization and carbon‑nitrogen cycling. Moreover, functional predictions suggested that CBGE addition has the potential to reduce the abundance of functional genes associated with human pathogens, animal parasites, and plant pathogens. The LZBR treatment achieved balanced nutrient utilization through microbial functional network reconstruction, yielding the highest soybean whole-plant biomass (65.8 g/plant, +10.9% vs CK) and grain crude protein (210.56 g/kg, +33.3% vs CK). In conclusion, under the tested pot conditions, the application strategy of LZBR exhibited promising potential to synergistically improve soil health and crop quality.
Forfattere
Lu FengSammendrag
Det er ikke registrert sammendrag
Forfattere
Ararsa Derese Seboka Lu Feng John Morken Muyiwa S. Adaramola Getachew Birhanu Abera Gebresilassie Asnake EwunieSammendrag
The growing hotel and education sectors in Ethiopia face increasing waste and energy demands, necessitating effective waste management and energy use strategies. This study is aimed to investigates biowaste production and energy consumption in hotels and university campuses in Southern Ethiopia, focusing on sustainable solutions for reducing environmental impacts. A mixed-methods approach, including surveys and onsite measurements, were used to assess energy consumption, biowaste generation, and management practices. A stratified purposive sampling was employed to select institutions, and both descriptive and inferential statistics, including time series analysis, multiple regression models, were applied; the environmental footprint of energy sources and energy potentials of biowastes were quantified following the guidelines set by the Intergovernmental Panel on Climate Change (IPCC).The study found that the primary energy sources for both sectors are electricity, natural gas/LPG, diesel fuel, fuelwood, and charcoal, with electricity being the dominant source. Hotels exhibit a consistent increase in energy consumption from 2016 to 2023, driven by tourism and service expansion, while university campuses show more fluctuating trends influenced by student enrollment and policy changes. Both sectors generate substantial biowaste annually—over 588 tons from hotels and 1448 tons from campuses—comprising food, fruit, vegetable and animal waste. However, waste management practices are often inadequate, with open dumping being common and the lack of energy recovery or treatment systems. The study quantified the greenhouse gas (GHG) emissions, found that non-electric energy sources such as oil fuels and firewood contribute significantly to CO2 emissions. In 2023, oil fuels accounted for 15,474.2 tonnes of CO2e, and firewood generated 130,377.2 tonnes CO2e, highlighting the need for cleaner energy alternatives to reduce emissions and reliance on carbon intensive energy sources.
Divisjon for miljø og naturressurser
BioSynGas
Divisjon for miljø og naturressurser
SUFFICIENT
SUFFICIENT is a highly innovative and industry driven collaboration project which brings together Norwegian industries from aquaculture (Cermaq), agriculture (Woolero and Terramarine) and biorefinery (Greentech) to develop new circular bioprocess routes, comprising anaerobic digestion, hydrolysis and fungal fermentation, for efficient conversion of selectively processed biowastes into products for fish & animal feed and biostimulant fertilizers.