This work aims to provide a comprehensive in-depth analysis of the life cycle environmental and economic performance of some key global supply chains for torrefied wood pellets (TWP) used as bulk fuel, including their contribution to the bio-economy of the region where they are produced, and the effects of carbon accounting and carbon tax policies on the TWP trade. TWPs produced in British Columbia

Business opportunities of circular bioeconomy have been proposed to lessen the socio-economic challenges of rural areas and to conserve diminishing natural resources. Recently, the financial and environmental sustainability of circular bioeconomy has gained considerable research interest. This study examines three promising operational models for circular bioeconomy development in southern Finland:

Catalytic transfer hydrogenolysis of glycerol can give 1,2-propanediol under mild condition (200 °C) in the absence of external H2. Most existing studies have been focused on metallic catalysts for tandem H2 generation and hydrogenolysis. In this work, a series of bimetallic PtPd/C catalysts with PdCx as promoting role, were synthesized with different calcination temperatures (300–900 °C) and varied

Studies of co-processing catalytic fast pyrolysis (CFP) oil with vacuum gas oil (VGO) are conducted in a Davison Circulating Riser (DCR). The CFP oil (CFPO) for this study was produced by upgrading fast-pyrolysis vapors from pine in an ex-situ fixed-bed reactor. CFPOs were co-processed at up to a volume fraction of 0.05 with VGO at 521 °C and 257 kPa. The yields of oil, aqueous phase, tail gas, and

The Hydrothermal liquefaction (HTL) of a nutrient-stressed microalgae (Scenedesmus obliquus) (NSM) with and without the use of zirconium-doped HZSM-5 catalyst was investigated under temperature conditions ranging from 250 to 350 °C. The wet impregnation method was used to prepare the catalyst, and HTL experiments were conducted on the unstressed microalgae (CM) for comparison. Under the stressed condition

Economically efficient biomass production is crucial to lift the microalgal circular bioeconomy requiring low production cost with higher biomass and value-added products. In this study, Micractinium sp. YACCYB505 was cultured at different illuminations (1600, 2400, 3200 lux) and CO2 conditions (up to 10%) to evaluate biomass productivity and accumulation of macromolecules (lipid, carbohydrate and

Fossil fuel shortages, rising petroleum prices, worldwide demand for renewable energy, and greenhouse gas (GHG) emissions due to anthropogenic activities are increasing interest in producing alternative biofuels like biodiesel. Biodiesel, a green alternative energy source, can be harvested from a variety of biological sources. Increasing energy security, improving rural development, and the transition

Increased markets for renewable energy feedstocks have led to an expansion of the woody biomass industry in the Southeastern United States. Virginia has had biomass markets for several decades and provides an opportunity to study both producer and market characteristics. A survey was conducted among biomass harvesting business owners in Virginia designed to characterize harvesting operations and markets

Liquid biomass, a valuable renewable resource with high energy density can be processed into green fuels that are similar to petroleum fuels using hydroprocessing technology. Hydroprocessing is a well-known classical petroleum operation for eliminating heteroatoms from crude oil such as S, N, and O before splitting the higher molecules into lower ones. Traditional technology has lately been employed

NREL's thermochemical biomass conversion research is focused on ex-situ upgrading of biomass fast-pyrolysis (FP) vapors as an efficient route to completely biogenic pyrolysis-based fuel precursors, fuels, and value-added chemicals depending on catalyst and process conditions. A near term pathway being developed uses these liquids for co-processing with petroleum feedstocks to assess biogenic carbon

Abstract not available

The short resting period technique (i.e., deliberate stoppage of the substrate supply) for anaerobic digestion (AD) leads to accumulation of microbes using residual substrate, which could be an effective method to achieve microbial proliferation without additional investment/operating costs. The composition of substrate must influence the increase of microbes. However, even the effect of the carbon

In this study, the immobilization of anaerobic sludge in sodium alginate (SA) with polyaniline (PANI) nanoparticles (NPs) was performed for producing biohydrogen from dairy wastewater (DWW). The effect of PANI on immobilization in SA was investigated at different PANI concentrations (5, 10, 20, 40, and 80 mg L−1). DWW, PANI NPs, and immobilized beads were characterized through physicochemical analysis

Biomass is commonly used for heat production in small-scale and domestic facilities. Particulate matter (PM) emissions from the combustion of solid biomass are a concern because of hazards to human health. Electrostatic precipitators (ESPs) have been supported as the most promising mitigation technology, although there is a lack of consolidation to provide and promulgate a solution. The currently published

The present paper discusses the data obtained from the thermogravimetric analysis and kinetic evaluation of seven different experimental solid biomasses representative of the Euroregion Galicia-North Portugal and commonly found in Europe. The samples comprised three raw, nonwoody biomasses and four additivated batches blended with kaolin and calcium carbonate. A TG-DSC analysis was performed on each

Modelling of a downdraft biomass gasifier involves modelling of several phenomena such as drying, pyrolysis, thermochemical reactions, fluid and solid flow and heat transfer. Transient modelling of such a gasifier taken up in the present work is more challenging due to widely different time scales of the phenomena leading to stiff equations which are highly non-linear. Transient modelling also requires

Gamma-valerolactone (GVL) has been synthesized from biomass and can be used as a fuel additive, green solvent, and in polymers. The production of nylon from GVL has attracted growing interest due to GVL application extension. We developed an energy efficient and economically viable approach for the synthesis of DAs (Dimethyl adipate) from the esterification of GVL using ionic liquid and Ru-catalyzed

In the present study, a total of 52 cyanobacterial and 57 microalgal strains belonging to different genera were investigated for their potential to produce biodiesel feedstock. Ranking of different isolates was performed employing a multicriteria decision analysis (MCDA) software, PROMETHEE, considering three important parameters, the specific growth rate, biomass productivity and lipid content. PROMETHEE

Abstract not available

Biomethanation of biomass-derived syngas represents a promising bioenergy conversion technology that can be operated within integrated plants to deliver ancillary services such as carbon capture and storage (CCS), seasonal energy storage and fuel densification. In the present study, we developed a set of techno-economic process models considering syngas biomethanation as a core unit complemented by

Forest residues from Eucalyptus plantations, including the belowground biomass, has become an important energy source in tropical countries. However, the belowground biomass harvesting may reduce wood productivity in the subsequent rotations due to the depletion of soil nutrients. Thus, the present study aimed to evaluate the nutritional sustainability of Eucalyptus clones’ plantations grown on second

In the context of bioenergy with carbon capture and storage, biochars has attracted much attention because of its unique advantages, and ash content is one of the important factors affecting the quality of biochars. Therefore, this paper performed the effects of ash removal on the properties and pyrolysis biochars of PMR with deionized water and 0.1 mol L−1 H2SO4. The results showed that water washing

This work addresses an unprecedented combination of solvents (choline chloride and oxalic acid deep eutectic solvent, carbon dioxide, and ethanol) that were used to fractionate sugarcane bagasse into three main fractions: 1) glucan rich fibers, 2) dissolved hemicellulose sugars and co-products, and 3) precipitated lignin. To maximize the lignin removal, a two-level three-variable design of experiments

Biomass models are key to the correct quantification of aboveground biomass and carbon stocks. Most of the current available sets of biomass models were developed for adult trees although very few have been employed to accurately estimate biomass during the first years of reforestations, despite the increasing number of reforestations over recent years. In this study, species-specific and generalized

Lignocellulosic biomass is a promising renewable feedstock for the production of bioenergy and platform chemicals; however, its use would not be economically viable without adopting effective transformation technologies. In this work, long-term anaerobic treatment (370 days) of pulp and paper primary sludge (PS) was performed by a thermophilic anaerobic membrane bioreactor (AnMBR) for the first time

This study was designed to assess the applicability of various modeling tools for representing hydrogen and methane co-production kinetics from food waste using a three-stage bioprocess. Firstly, to elucidate the effect of substrate to inoculum ratio (S/X) on the kinetic characteristics of hydrogen and methane production, multiple kinetic models were applied under different S/X ratios. Secondly, a

The bioenergy production and their by-product valorization are valuable strategies to the sustainability enhanced targets. The present work integrates valorization of thermochemical conversion of residual biomass rice husk and corn cob, focusing on biogenic oxide production from biochar. The bioenergy analysis and biochar properties allowed to establish a specific energy potential (SEP) up to 7.47

Auto thermal biomass gasification produces syngas more energy-efficiently by utilizing the heat released from the reaction between CaO and CO2. The auto thermal gasification process also reduces CO2 emissions and gasification temperature. However, the high temperature required for the regeneration of spent CaO consuming large amounts of energy is a challenge for this process. This paper investigated

The use of lignocellulosic agricultural residues is emerging as a low-cost, sustainable, and eco-friendly approach for the production of microbial enzymes and other chemicals. In this study, the production of enzymes with lignocellulolytic potential and the secretome profile of the thermophilic fungus Myceliophthora thermophila were evaluated in solid-state cultivation on agricultural residues such

Corn is the second most abundant crop produced worldwide annually. Its residue, corn stover, is among the three most agricultural residues globally and the first one in the United States. The available corn stover in the world could be used to produce more than 45 million cubic meters of bioethanol (60% of the world production) instead of being mainly burnt on the fields. This practice could potentially

Abstract not available

As a zero-carbon energy source, biomass will play an important role in achieving the goal of carbon neutrality. The efficient conversion and utilization of biomass energy remains a great challenge. Thermochemical liquefaction is one of the most efficient ways to convert biomass into liquid fuels. In this study, five different solvents were used to liquefy sawdust. The results showed that cyclohexanol

The bagasse of guayule, obtained after extraction of natural rubber and resins, can be used to produce 2nd generation fermentable sugars and lignin. For this purpose, four pretreatment technologies were applied to deconstruct the guayule bagasse: diluted acid (DA), steam explosion (SE), organosolv (OS), and the steam explosion followed by alkaline washing (AW). The obtained lignocellulosic pulp underwent

Sorghum x sudangrass hybrid (Sorghum bicolor (L.) Moench) has excellent biomass yield and requires low maintenance. It can be harvested multiple times during the growing season. It has great potential to be used for cellulosic biofuel production in the temperate regions, including the Korean peninsula. However, N requirements during the regrowth have not been evaluated yet. Three years of the study

Resulting from the wide range of usages of bio-methane, anaerobic digestion has become a major issue. Beside biogenic residues, the cultivation of energy crops has significantly been expanded in Europe. Due to the increasing competition for land, sites with a low value for food production are predestined for cultivating feedstocks. Numerous studies have shown that perennial energy crops (PECs) present