Abstract not available

Hydrothermal carbonization of glucose in the absence and presence of recoverable solid polystyrene-supported microencapsulated Lewis acid catalyst has been carried out at 180 and 200 °C for 6, 12, and 24 h using either 0.25 g or 0.5 g of catalyst. The effects of temperature, residence time, and catalyst loading on the resulting hydrochars were investigated. At the lowest temperature (180 °C) and the

Coffee ground is considered one of the promising biomass resources because it is one of the most popular beverages and has higher calorific value than other kinds of biomass. In the previous study on the fast pyrolysis of coffee ground, the viscosity of the pyrolysis oil was found to be very high and it was suggested to mix some amount of alcohol to reduce its viscosity. The quality of the pyrolysis

Drought is one of the major environmental stressors that affect plant growth and performance. To cope with such stresses most plants utilize belowground association with arbuscular mycorrhizal fungi (AMF). The AMF provide plants with nutrients and water in exchange for carbon fixed by their hosts. Very little is known about how this mutualism affect plant growth and physiology under extreme drought

Oil-spills present a significant threat to the environmental marine bio-diversity. Conventional cleaning approaches such as skimming are costly. In this regard, alternative approaches utilizing functional nanoparticles (NP) are on the rise due to their effectiveness in separating the non-aqueous phase. This work presents a facile yet sustainable methodology using environmentally-friendly biogenic silica

This work investigates the feasibility of extracting biofuels from general wastes, with significant non-recyclable and inorganic components, through the novel thermo-catalytic reforming (TCR®) technology. Two forms of general waste (Up-Sieve Material and Grey Compost) supplied by Risorse Ambiente Palermo (RAP) are studied. Each feedstock is shredded, pelletised and characterised. Analyses of the feedstock

The accumulation of biosolids has caused significant harmful pollutants and negatively impacted nearby ecosystems and communities, which requires immediate management and regulation. Biosolids are potentially a highly productive source of renewable crude. Hydrothermal liquefaction is a promising technique to convert biosolids into renewable crude oil. However, challenges exist with optimising the HTL

Improving biomass and value-added compound production is crucial for the industrial application of microalgae, achieved through the utilization of low-cost nutrients and various cultivation modes. This study aimed to enhance the biomass and biochemical production of the indigenous microalgae by comparing different cultivation modes. Among six algal strains obtained from the East Sea in South Korea

The waste generated by the cocoa industry consists of lignocellulosic material that can be used as a source of energy. To investigate this potential, the pyrolysis of cacao bean shell (CBS) was analyzed through thermogravimetric analysis (TGA) using nitrogen as the carrier gas. The process was performed at four different heating rates (β1 = 20 °C min−1, β2 = 30 °C min−1, β3 = 40 °C min−1, and β4 = 50 °C min−1)

Catalytic pyrolysis of olive pomace (OP) was studied in a quartz fixed bed reactor at 500 °C. Due to the presence of high amounts of oxygenated components (OC) in bio-oil, the aim of this research was upgrading of bio-oil to valuable biofuel. Synthesized MgO, CaO, NiO, and Co3O4 modified zeolite catalysts were examined at several catalysts to biomass (C/B) ratios (0.2, 0.3, 0.4, 0.5, and 5). Different

In Paris Climate Agreement (COP 21) in December 2015, India committed to cut its carbon (C) emissions by 30–35% of its GDP (gross domestic product) and attain 40% of installed energy from renewables by 2030. In the Glasgow Climate Pact (COP 26), an agreement developed at COP26 of UNFCCC in November 2021, India committed to enhancing its renewable energy (RE) capacity to 500 GW and installing 50% of

Bioenergy is widely included in energy strategies for its GHG mitigation potential. Bioenergy technologies will likely have to be deployed at scale to meet decarbonisation targets, and consequently biomass will have to be increasingly grown/mobilised. Sustainability risks associated with bioenergy may intensify with increasing deployment and where feedstocks are sourced through international trade

In the present study, the microalgae Spirulina platensis DRH 20 was cultivated in 4 photobioreactors with lighting intensity of 330 (±13.2) μmol m−2 s−1, 24 h d−1. No additives were added in PBR 1, while CO2 and phosphoric acid (pH control) were added in PBR 2, phosphoric acid was added in PBR 3, and CO2 was added in PBR 4. Dry biomass reached a maximum of 20.7 g L−1 and productivity reached a maximum

Accurate estimation of biomass and carbon stocks in mangrove forests is a prerequisite for a better understanding of their role in climate regulation. Allometric equations remain appropriate tools in this context but are lacking for many mangrove species and sites across Africa. In this study, we destructively sampled 68 individual trees of the two dominant West African mangrove species (Rhizophora

Abstract not available

The calcium looping technology is one of the most promising technologies for capturing and storing CO2. This technology has been evaluated with a variety of sorbents and conditions in previous works, but the inlet CO2-ladden gas has typically been a flue gas from combustion, which typically has a composition of 10–20% CO2 and 80–90% N2. On the other side, the performance of the calcium looping process

This paper explores social acceptance of different wood-based energy applications in the Great Lakes region in the Upper Midwest, USA. Specifically, the paper examines attitudes and perceptions towards residential wood burning, commercial-scale wood boilers for heat, combined heat and power (CHP) facilities, and industrial power generation in Michigan. In 2021, we conducted a state-wide survey (n = 207)

Anaerobic co-digestion (AcoD) is a promising biotechnological approach for the management of livestock and agro-industrial wastes with the concomitant production of renewable energy. This study investigated methane production during batch AcoD of swine manure (SM) and different amounts of cassava bagasse (CB), using Na2CO3 to adjust initial pH (8.0) and as buffering agent. The highest methane yield

Tea dregs, an abundant and easily found bio-waste, were utilized as a precursor to developing acid biochar (SO3H-TDAC) that was used as a catalyst in producing biodiesel through oleic acid (OA) esterification with methanol. SO3H-TDAC catalysts were prepared through the consecutive carbonization–sulfonation two-step method. The catalyst with the highest sulfonic acid density was obtained at a carbonization

This study investigates the implications of large-scale Bio-CCS deployment on forest-based biofuel, kraft pulp, and district heating production, focusing on the resulting biomass competition. Using the Nordic Forest Sector Model (NFSM) with a Bio-CCS add-on, we integrate negative emission trading into the EU Emissions Trading System across a range of CO2 price levels. The findings reveal that biofuel

Digestate solid is a waste produced by biogas plants. It has a promising potential for the application of direct capture of CO2 from the air. In this study, digestate soild was carbonised under different temperatures to obtain digestate char. The carbon capture performance using the produced digestate char was further explored. Firstly, the structural properties of the prepared digestate char were

We examine the supply chains of post-fire salvage harvest to 28 mills or 10 communities in British Columbia, Canada, and assess the net change in GHG emissions for community bioenergy and biofuels, relative to a ‘do-nothing’ baseline with fossil fuel use. Lowest-cost supply chains for post-fire salvage had largest hauled biomass for mills in the southern interior of the province, with mills in close

The lack of farmers' willingness to grow perennial bioenergy crops (PBCs) presents a critical barrier to the emergence of cellulosic biofuel production. The willingness relies on a complex network of economic, environmental, and social drivers, among which the influence of social factors (e.g., the influence of neighborhood, community, and communication) is less understood. This study addresses this

Despite conservation efforts and increased awareness, the loss of soil biodiversity goes on across a wide range of ecosystems. Since soil function and structure depend mainly on the state of the biological communities, the soil quality assessment and disturbance in annual vs. perennial cropping systems is done with the help of indicators such as nematodes. Agricultural practices like mix cropping causes

Green renewable biolubricants base stock based on polyol triester of epoxidized Malaysian Elaeis guineensis palm kernel oil and trimethylolpropane was produced and optimized by D-optimal design of response surface methodology. The in-situ generated performic acid catalyst was used to epoxidize the palm kernel oil polyol triester (PKO-TMPE). The epoxidation process was improved and the subsequent epoxidized

The exploration of residual lignocellulosic biomass for biofuel production is crucial to achieve significant greenhouse gas (GHG) emissions mitigation within the following decades, translating to diminished agricultural environmental impact and land-use change dynamics. On the other hand, cellulosic ethanol production pathways are typically resource-intensive, in energy and chemical terms, which directly

Water circularity is a challenge which must be met to guarantee the sustainability of this resource. Woody biomass is another resource of interest for the bioeconomy, which has multiple uses and acts as a carbon sink. Combining both aspects involves establishing wastewater irrigated plantations, the so-called Vegetation Filters. The aim in this research was to contribute towards assessing the suitability

Cellulosic biomass derived from switchgrass can be an alternative source to produce renewable bioenergy. However, bioenergy production from switchgrass is not economically viable unless genotypes with high yield potential and acceptable biofuel quality are available. To identify switchgrass genotypes with good biofuel quality, ten high biomass yielding hybrid populations derived from crosses between

Forest is considered a significant source of woody biomass production. Sustainable production of wood, lower emittance of CO2 from burning, and lower amount of sulfur and heavy metals are the advantages of wood rather than fossil fuels. The quality and quantity of woody biomass production are a function of some operations including genetic modifications, high-quality forestry, evaluation, monitoring

In France, residential wood heating represents 52% of the share of energy produced from renewable resources for heat production. The forest of the Grand Est region (FR) covers one third of the regional territory and 12% of the national forest area. The main purpose of this study is to assess and to compare the global warming and the human health effects of the wood energy sector at domestic and regional

The efficient depolymerization of lignin for the production of high-value chemicals is essential for the development of a sustainable and competitive biorefinery. In this study, we report the preparation of homologous biochar-supported inlaid Cu–Ni catalysts (CuxNiy/BC) using a one-step method, and their application for lignin depolymerization in mild water without the need for external hydrogen, additives