EISSN : 25244469
Current Publisher: Springer Science and Business Media LLC (10.1186)
Total articles ≅ 6
Articles in this journal
BMC Energy, Volume 1; doi:10.1186/s42500-019-0006-5
BMC Energy, Volume 1; doi:10.1186/s42500-019-0007-4
Abstract:Nowadays, nanotechnology is one of the most potential tools in the modern agriculture to improve productivity, adaptation to climate change and sustainable development. In this study, the effect of nanoscale zerovalent cobalt (NZVC) on the growth, photosynthetic parameters expressed by Fo (initial fluorescence), Fm (maximal fluorescence), Fv/Fm (maximal photochemical efficiency), ΦPSII (effective quantum yield of photosystem II), ETR (photosynthetic electron transport rate), Pn (net photosynthetic rate) and content of chlorophyll a and b at different stages in soybean leaves were investigated. The NZVC made from Vietnam and USA with different concentrations (0, 0.17 and 16.7 mg/kg seed) were used. It was found that when soybean seeds were treated with NZVC, the growth indices (such as the plant height, dry weights of stems and leaves and leaf area), photosynthetic parameters and chlorophyll a and b content were increased obviously compared with that of the control. These values had tended to gradually increase and reach maximum at fifth (V5) trifoliate stage, whereas they were significantly decreased at begin at flowering (R1) stage. The real productivity of the experimental formulas exceeded the control (5%), while the quality of grain was significant different among the plots. The zerovalent cobalt nanoparticle from Vietnam exhibited similar efficiency compared to those that came from USA. Our results indicated that photosynthesis was positively affected by NZVC, leading to the improved growth of soybean and therefore to improved productivity as a whole.
BMC Energy, Volume 1; doi:10.1186/s42500-019-0005-6
Abstract:The global energy structure is on a low-carbon transition path featuring more natural gas consumption, and global natural gas demand has been increasing fast. Planning and operation of a natural gas supply system at a transient stage with multiple supply sources, end-consumers, and large infrastructure with multiple sub-systems are challenging tasks. Spatial and seasonal mismatch of natural gas supply and demand makes the natural gas distribution and infrastructure construction planning problem even more complex. Without proper planning, insufficient construction could lead to a shortage of natural gas supply, whilst excessive construction could lead to a higher cost. Quantitative analysis technologies are needed to facilitate decision-making during the transient stage of a natural gas system. In this work, we propose a monthly-scale multi-period and multi-regional modelling and optimization framework for planning and operation of a natural gas supply system at a transient stage, with a case study of the natural gas supply system in China. The optimal planning and operation strategy of the natural gas supply system in China by 2050 is obtained by minimizing the lifespan overall cost. Gaps between actual planning and the optimal planning are pointed out. Finally, policy suggestions are summarized, including establishing market-oriented pricing mechanisms, managing infrastructure centrally, promoting coordination amongst provinces when formulating projections, accelerating current infrastructure construction, and predicting natural gas demand and prices reasonably.
BMC Energy, Volume 1; doi:10.1186/s42500-019-0002-9
Abstract:Energy security and climate change mitigation are two of the most significant challenges facing governments in countries across the world. The United Kingdom (UK) government therefore passed the 2008 Climate Change Act that legally commits Britain to reducing ‘greenhouse gas’ (GHG) emissions by 80% over 1990 levels by the year 2050. Bioenergy (as a potentially low carbon and renewable energy source) is recognised as having the potential to contribute to mitigating GHG emissions and, through utilising domestic biomass resources, can help Britain reduce its reliance on fuel imports and thereby enhance energy security. In order to help guide the UK towards achieving its ambitious targets, a number of forecasting studies have been carried out, each proposing different pathways to securing its 2050 GHG emissions reduction target. The extent to which bioenergy can contribute to future energy supply is appraised, given the biomass resources available to Britain. Analysis of three notable low or zero carbon energy scenario sets developed by, respectively, the British Government’s Department of Business, Energy and Industrial Strategy (BEIS), the UK Energy Research Centre (UKERC), and the Centre for Alternative Technology (CAT) enabled a comparative evaluation to be made of each projection and their realism. They reflect alternative modelling approaches that seek to meet the statutory 2050 carbon reduction target (BEIS and UKERC), to that (by CAT) of fully decarbonising Britain by 2030. The spotlight is on the use of dedicated energy crops and their implications, with a particular emphasis on the critical factors and issues of land availability, conversion technologies [including bioenergy carbon capture and storage (BECCS)], and foreign imports. Likewise, the deployment of bioenergy resources may have significant deleterious impacts in terms of direct and indirect land use change, loss of biodiversity and the impairment of eco-system services, and competition with food production. A ‘gap analysis’ leads to recommendations for the improvement of the next generation scenarios and forecasts in order to provide more realistic projections for bioenergy uptake in the UK, although the lessons learned are applicable across much of the industrialised world. It was found that while all three low or zero carbon scenario studies had internal shortcomings from a bioenergy perspective, the analysis by BEIS stood out as having the greatest level of realism due to the account given to many of the critical factors and underlying issues relating to bioenergy uptake.
BMC Energy, Volume 1; doi:10.1186/s42500-019-0001-x
Abstract:The excess sludge (ES) generated from wastewater treatment plants entails high expenditure for its treatment and disposal. In this study, firstly, the influence of mild-thermal (70 and 90 °C) and alkali-(pH 10 and 11) pretreatment methods on solubilization and acid generation from ES was investigated. The experimental results showed that the solubilization (SCOD/TCOD) increased as pretreatment intensity increased (70 °C < 90 °C < pH 10 < pH 11). However, organic acids generation was not consistent with the increased solubilization (pH 11 < 70 °C < 90 °C < pH 10). As a result of microbial analysis through next generation sequencing (NGS), it was observed that microbial community structure was greatly varied depending on the pretreatment methods. Bacteroidetes (70.8%), and Firmicutes (58.1%) were found to be dominant at thermal conditions of 90 °C and pH 10. Furthermore, the solid residue after acids generation was subjected to anaerobic digestion (AD) for CH4 production. The economic assessment showed that the thermal pretreatment at 90 °C followed by acid recovery and AD process enhanced the net profit of the treatment process with a positive gain of 2.53 USD/ton of sludge. Meanwhile, the alkali-pretreatment at pH 11 showed a negative value of − 2.0 USD/ton of sludge.
BMC Energy, Volume 1; doi:10.1186/s42500-019-0003-8
Abstract:This editorial accompanies the full launch of the latest new BMC Series journal, BMC Energy. Written jointly by the journal Section Editors, the Chair of the Editorial Advisory Board and the Editor at Springer Nature, this editorial outlines how this new journal plans to serve the energy research community and describes in detail the scope of the work that it hopes to attract. BMC Energy joins a number of new physical science journals that have been launched recently in the BMC Series, each following BMC Series’ ethos of openness and inclusivity, aiming to publish quality research that is accessible for all.
BMC Energy, Volume 1; doi:10.1186/s42500-019-0004-7
Abstract:Scientific studies have demonstrated that it is possible to generate a wide variety of bioenergy from biomass residues and waste, and however its cost is not competitive with petro-fuels and other renewable energy. On-going efforts are continued extensively to improve conversion technologies in order to reduce production costs. The present review focuses on the conversion technologies for transforming biomass residues and waste to biofuels, specifically their technological concepts, options and prospects for implementation are addressed. The emerging developments in the two primary conversion pathways, namely the thermochemical (i.e. gasification, liquefaction, and pyrolysis) and biochemical (i.e. anaerobic digestion, alcoholic fermentation and photobiological hydrogen production) conversion techniques, are evaluated. Additionally, transesterification, which appears to be the simplest and most economical route to produce biodiesel in large quantity, is discussed. Lastly, the strategies for direct conversion of biomass residues and waste to bioelectricity including the use of combustion and microbial fuel cells are reviewed.