Nigeria intends to rank among the top 20 global economies by 2030 by focusing on industrialisation. However, limiting energy access may slow the rate of industrialisation. Bioenergy integration into Nigeria's energy mix can accelerate the industrialisation agenda due to the co-benefits it offers. We used a disaggregated approach to map agri-residue availability and identify knowledge gaps in agri-residue

Climate change, the increasing global demand for food and feed and the loss of biodiversity, requires a shift towards a sustainable, innovative and knowledge-based bioeconomy. Simultaneously, the implementation of a strategic approach to the utilization of the sector and associated bioresources that aligns with the principles of sustainability represents a significant challenge. The aim of this study

Policies, implemented and being considered in the UK, promote the use of biogas from anaerobic digestion (AD); however, small-medium scale AD plants, the majority of the UK's AD plants, have little access to energy distribution networks. The opportunity for using biomethane (upgraded biogas) for transportation, is rewarded in the Renewable Transport Fuels Obligation (RTFO), offering the AD plants the

Four alternative, sugar-derived chemical intermediates were compared for the production of propylene and acrylonitrile in energy self-sufficient biorefineries, annexed to an existing sugarcane mill, to assess economic feasibility and environmental sustainability. Aspen Plus® process simulations considered ethanol and isopropanol produced from A-molasses as intermediates for propylene production, while

Arundo donax, one of the most invasive plants in the world, but also a promising source of lignocellulose materials was employed as a feedstock for a biorefinery process. Water-extracted Arundo donax samples were subjected to one-step biphasic fractionation in catalyzed media containing water and 1-butanol, an environmentally-friendly solvent. The effects of selected operational variables (catalyst

While several studies have investigated the anaerobic digestion of paper-mill sludge (PMS), this technology suffers from nutrient insufficiency, inhibition by aromatic compounds, and low bio-CH4 yield. Hence, PMS was anaerobically co-digested with chicken manure (CM) and supplemented by hydroxyapatite@biochar (HAP@BC) nanocomposite for enhancing 2-chlorotoluene degradation and enriching the methanogenic

Designing and synthesizing bio-based catalysts for the catalytic conversion of biomass to high-value chemicals is a green and promising route in the field of sustainable chemistry. Herein, VxOy/NC_P catalyst was synthesized by a simple impregnation-pyrolysis method using green and cheap bio-chitin or chitosan as the N-doped carbon (NC) precursor and was applied to the aerobic oxidation of ethyl lactate

While torrefaction improves the fuel properties of biomass pellets, the chemical components of secondary products in liquid form are highly valuable in the industrial field. In addition, the components of the liquid have the potential to be used as biopesticides. In this study, corn stalk pellets were torrefied at 320 °C and torliquid was obtained as a secondary product from condensable gases during

The chemical looping co-gasification (CLCG) of biomass and biochar provides an attractive approach for producing sustainable syngas. The novelty of this study is to investigate the CLCG of cotton stalk and rice husk char with BaFe2O4/50 % MgAl2O4 (BFMA5) oxygen carrier for syngas production. Individual gasification, co-gasification, and individual chemical looping gasification (CLG) were also evaluated

Coal and biomass are two important carbonaceous feedstocks for producing carbon materials. Distinct composition of them might affect pore development of resulting activated carbon (AC) during activation. This was investigated herein via activating anthracite coal and poplar biomass via physical activation (activators: CO2 and H2O) and chemical activation (activators: K2C2O4 and ZnCl2) under the same

The increasing demand for all types of energy is driving the biofuel sector in transportation to innovate technologies for a more energy-efficient future by synergistically utilizing various energy sources. Current fossil fuel reserves are insufficient to meet rising energy demands and are expected to be depleted soon. Factors such as pollution, global warming, and high oil prices have driven the search

Significant quantities of lignocellulosic agricultural residues are produced worldwide, and their management is quite problematic. In Greece and in general in the Mediterranean, large quantities of prunings are produced, especially from olive trees. The common practice of managing these residues is by burning them in the fields. On the other hand, in China, but also globally, huge amounts of residues

Chemical looping technology (CLT) is an innovative technology that involves clean and efficient conversion of hydrocarbons into power, fuel, and chemicals through oxygen carriers (OCs) by circulating between a fuel reactor (FR) and an air reactor (AR). Several processes such as chemical looping combustion (CLC), chemical looping gasification (CLG), and chemical looping reforming (CLR) have been proposed

In the context of materials recycling, updraft gasifiers are promising small and middle-scale reactors to obtain building blocks and/or energy from waste plastic and biomasses. To this aim, these kinds of materials can also be mixed and reduced into pellets, while the needed heat enters the process with a heated carrier gas. In order to preliminarily design a gasifier to check its feasibility with

Pellet manufacturing allows for the improvement of the handling properties of biomass streams. Increasing channel length of the ring-die holes generally increases physical pellet quality. This phenomenon is often attributed to an increase in pressure gradient over the die and greater densification of the mash during compaction. It remains unknown, however, to what extent this improvement in physical

Photocatalytic lignin depolymerization is an important pathway to extend lignin application. The application of deep eutectic solvent (DES) realize green chemistry closed-up due to avoid using organic solvent. In this work, photocatalytic cleavage lignin β-O-4 bonds with Bi2O3/Bi2WO6 in DES is developed. DES composition is betaine: citric acid (1.2:1.0, moisture content: 60 %). A certain quantity of

The study addressed the need for sustainable greywater treatment, aiming to mitigate water scarcity and pollution. The potential of using microalgae cultivated in greywater with zinc oxide nanoparticles (ZnO/GAC-nanocomposite) was investigated for these purposes. A batch photobioreactor was employed for 15 d. The nanocomposite system significantly improved nutrient removal, with optimal removal efficiency

Production of jet fuel is not only promising but challenging in the field of biomass utilization. Here we proposed a novel route to produce highly branched alkanes with ultra-low freezing point using n-butyraldehyde as feedstock by self-aldol condensation and subsequent hydrodeoxygenation (HDO). The catalyst characterization revealed that the MgO-SiO2 catalyst played an acid-base synergetic effect

Lignocellulosic wastes have garnered interest in activated carbon (AC) production owing to their abundance and cost-effectiveness. This research utilized coffee husk as a precursor for AC. The methodology involves impregnating the waste with varying proportions of phosphoric acid (H3PO4), 1:1 and 1:3 (masswaste:massH3PO4), and activation in a microwave oven, with different power and activation times

The study explored the potential of activated carbon from mixed municipal solid waste (MSW) char produced at 250 and 350 °C. The resulting char was activated using NaCl, KOH, and ZnCl2, serving as a novel precursor to optimizing the synthesis conditions for cost-effective activated carbon aimed at removing Pb(II) from water. Characterization techniques, including proximate analysis, iodine number,

The surge in Waste Electrical and Electronic Equipment (WEEE) volume presents a formidable disposal challenge. This study focused on catalytic pyrolysis of waste printed circuit boards (WPCBs) employing Ca(OH)2 alone and in conjunction with ZSM-5 as catalysts. Kinetic parameters for catalytic and non-catalytic pyrolysis were derived through thermogravimetric analysis (TGA). The Coats-Redfern method

Commercial cultivation of the Macauba palm is growing due to its agro-energy potential. This study quantified carbon stock in two macauba plantations (4.8 and 9.0 years old), considering carbon stored in soil and biomass. We assessed total organic carbon (TOC) stocks in labile (EOC and LF-C) and non-labile (NL-C) soil fractions, comparing these with a forest regenerating for over 30 years. Soil samples

Lignocellulosic biomass offers a sustainable and renewable method for producing high-quality fuels and value-added chemicals. In this study, residues from peach palm (top, inner sheath, and meristem), sugarcane (top), and pineapple (mother plant) were characterized based on their physicochemical properties and thermal degradation behavior to estimate their bioenergy potential. The biomass residue kinetic

Thermophilic fungi are superlative microorganisms for enzyme production, especially cellulase, and their using in biotechnological applications is due to their stability at utmost temperatures. In the current investigation, we isolated six genera encompassing six fungal species and one species variety from 30 samples of compost at 45 °C and 55 °C. Thermomyces lanuginosus was the most rampant species

The projected escalating use of renewables to meet the Paris Agreement goals has raised concerns about land-use pressures, particularly from biomass-based systems. This study introduces the concept of Integrated Food, Energy, and Materials Systems (IFEMS) as a strategy to optimize land-use efficiency for decarbonization. To evaluate the land-use efficiency of IFEMS and other renewable resource-based

A model for the fast pyrolysis of anisotropic biomass particles is presented which considers bubbling dynamics within the liquid intermediate phase (metaplast) and aerosol ejection from this phase. The model employs the population balance equation and the method of moments to estimate the production rate and resultant size distribution of aerosol ejections, incorporating a detailed CRECK reaction mechanism

Cities worldwide face a significant public health and environmental challenge in handling municipal solid waste (MSW). This research exposed an effective utilization of MSW as the source for hydrogen production via a supercritical water gasification process under 450–650 °C at 15–45 min processing time. The impacts of gasification temperature and processing time on the functional properties of hydrogen

The mixed culture of and were found to improve lignocellulase production and ameliorate the composition (Fang et al., 2010; Fang et al., 2013; Zhao et al., 2018) [1-3]. However, the mechanism behind remained unclear. Here we conducted multi-omics study of the mixed culture to elucidate the mechanism comprehensively, including proteomics of the secretomes, metabolomics of the fermentation broths and

This paper reviews the performance of geopolymer catalysts for biodiesel production. The limited review reports on this topic have been noticed in the published literature, and it is highly required to critically review the published work on this topic so that improvements can be made and new gaps in the field can be highlighted. Various types of geopolymers such as K/Zeo-Geo, Na-geopolymer, K-geopolymer

An advanced CFD (computational fluid dynamics) model has been developed to describe the combustion of wood pellets. It is based on a packed-bed approach and provides a realistic description of the combustion of pellets, resolved in 3D over the whole fuel bed. It considers the properties of the packed bed rather than the properties of the single fuel particles. Compared to a particle-based description

Xylose isomerase (XI) pathway has been widely employed to enable to convert xylose and glucose into commercially feasible lignocellulosic ethanol products. Nevertheless, studies about the effect of different promoters to the expression of A are lacking. Therefore, five strains with , , , , promoters were constructed. Among them, INV/pHM368-P-A generated with A driven by 1 promoter displayed the highest

Open burning is commonly used to dispose of piles of forest residues generated by forest management activities; however, this method is associated with smoke emissions and damage to forest soil. Air curtain burners (ACB), such as the Firebox (FB) and CharBoss® (CB), offer an alternative to open burning. This study evaluated the performance of FB for biomass disposal and CB for biomass disposal and

High-latitude regions are not traditionally considered for energy crop production due to unfavorable production conditions, e.g., low temperatures and short growing seasons. However, with increasing pressures on land use in warmer regions, rising global food demands, and climate change, shifting energy crop production to cold climate regions has become a desirable alternative. Increasing attempts have

Valorization of food waste into high value-added glycerol was designed and prepared via directional green transformation using multi-enzymolysis saccharification coupled facultative fermentation by . The optimal conditions for the first step of multienzyme hydrolysis and the second step of facultative fermentation were 55 °C and pH 5.0 for 6 h, 30 °C and pH 7.0 for 70 h, respectively. The glycerol

Lignocellulosic fermentable sugars have been attracting increasing attention due to the developments of synthetic biology, yet the heterogeneity of the raw material results in high pretreatment intensities and the generation of numerous fermentation inhibitors. In this study, the rolling-disc milling texture-sorting was established for raw material to mitigate inhibitors generation at its source, specifically

This paper aims to critically assess the potential of biomass-derived carbon material for battery development, with a particular emphasis towards electric vehicles (EV) application. Existing studies highlighted that pretreatment, carbonization, activation and conductive dopants, influenced pore size, surface area, conductivity and degree of graphitization of carbon material, which subsequently influenced

In the novel paradigm of the circular economy the value of products, materials, and resources is retained in the economy for as long as possible, thereby minimizing waste generation. In this context, the olive oil producing countries are presented with a new opportunity that lies in the large amount of by-products generated by the olive oil industry, in particular olive pomace. Among the existing options

The ongoing energy crisis and global warming threat represent major challenges of the century. Our dependence on conventional fuels has reached to a critical level where attempts are made to reduce the greenhouse gases (GHGs) emission and impede its ramifications. Simultaneously, it is projected to have alternative greener energy resources to reduce the deleterious effect of biofuels on humans and

The collection of Waste Cooking Oils (WCOs) has been growing in recent years due to the increase in society's awareness of environmental aspects since the uncontrolled disposal of WCOs has substantial adverse environmental impacts. WCOs are potential secondary raw materials for producing environmentally friendly biodiesel, which reduces pollution, promotes renewable energy use, and decreases waste

The preparation of high-performance porous carbons (HPPCs) using biomass as adsorbent is a viable strategy for the treatment of ibuprofen (IB) in water. In the present study, pyrolyzed carbon was prepared from duckweed (DW) and rice straw (SW) at 400, 500, and 600 °C, and subsequently mixed pyrolysis with KOH to prepare the HPPCs. The HPPCs were used for the treatment of ibuprofen (IB) in water to

The current production of aromatic hydrocarbons, crucial in fuel and polymer production, relies heavily on fossil resources. Finding carbon-neutral alternatives is necessary to address the current environmental challenges. Lignin emerges as a promising source for bio-based aromatics. However, existing catalytic hydrodeoxygenation processes often yield mixtures of cycloalkanes and aromatics. In our

Biomass-derived charcoal, possessing high surface area, temperature resistance, and stability, has diverse applications. Traditional methods overlook its conductivity. In this work, a new approach was devised. By controlling the pyrolysis temperature and preparation atmosphere, rice straw was converted into biochar electrodes at 1000 °C in a N₂-containing environment. The temperature effect on the

Dark fermentation of cheese whey (CW) for the production of biohydrogen generates an acidic effluent, containing high concentrations of volatile fatty acids, which needs to be further treated before disposal and possibly further valorised. This study develops a dual-chamber Microbial Electrolysis Cell (MEC) that achieves simultaneously the reduction of the organic content of this effluent to environmentally

After acidic and high-temperature pretreatment of lignocellulosic biomass, researchers find that some lignin-like substance appeared on the surface of cellulose, which is called pseudo-lignin. Pseudo-lignin can be formed through carbohydrate degradation or substitution reactions on the aromatic ring of lignin. Pseudo-lignin is identified as Klason lignin in compositional analysis, whereas in Py-GC-MS

The primary objective of this study was to assess the feasibility of utilizing urine-prepared NaOH solution (NUr) as an innovative pretreatment approach for enhancing BHP in rice straw through anaerobic digestion (AD) process. The findings suggest that pretreatment with NUr could substantially enhance hydrolysis rates and H production. The maximum biohydrogen production (BHP) yield reached 184.46 mL/g

The paper presents a techno-economic comparison among five alternative process configurations for bio-methanol production from the gasification of residual forestry biomass. Process design and simulations are performed in Aspen Plus for mass and energy balance calculation, followed by preliminary sizing and economic analysis. Process schemes include a gasification island (state-of-the-art low-pressure

Bio-jet fuels are considered as a highly promising strategy for minimizing carbon emissions in the aviation sector. This study presents a scheme for producing bio-jet fuel from corn stover through aqueous phase conversion, focusing on the economics and environmental performance of various lignin utilization technologies. Three scenarios were simulated using Aspen Plus, each integrating a different

Biological hydrogen production is seen as one of the solutions to achieve a sustainable energy transition and net-zero emission by 2050. The underlying mechanisms of biological hydrogen production methods are still tenuous in literature. This study uses bibliometric and systematic literature review methodologies to examine the recent and emerging techniques on biological hydrogen production methods

One of the main limitations of commercial production of algae is the cost of cultivation, largely attributed to the cost of the nutrients; hence, finding cheap alternative substrates has been a significant line of research in this field. The dairy industry produces large amounts of wastewater that might be used as a cost-effective nutrient alternative, containing lactose as a main carbon source, as

To address environmental pollution, the chemical industry is continually refining its standards. In the United States and Europe, regulations stipulate that the sulfur content in diesel fuel must not exceed 15 ppm. This stringent requirement has driven continuous research into advanced fuel upgrading techniques. One such promising method is oxidative desulfurization (ODS), which removes sulfur compounds

A large amount of corn stover waste is produced from processing industries. In this study, the thermostatic microwave-assisted alkali pretreatment (TMAAP) of corn stover at atmospheric pressure was investigated to improve the utilization rate. The optimized conditions include pretreated time, NaOH concentration, temperature, initial power, and solid-liquid ratio. The pretreated corn stover samples

Municipal solid waste (MSW)'s 40–60 % carbon content makes it a feedstock for biofuel production via pyrolysis. One challenge in the conversion process is MSW fouling due to thermal decomposition. The accumulated deposit on the injection screw often leads to plugging and constriction. This study examined the morphology and composition of the MSW fouling deposit and conducted a thermal simulation to

In the context of the global response to climate change, methanol is receiving widespread attention as a potentially clean, renewable fuel. In this paper, the effects of injection timing and split injection strategy on the combustion process and emissions were investigated in methanol engines. The effect of mixture control on the ignition delay period was studied in detail. The results showed that

Renewable energy sources have recently received a lot of attention for their potential to manage and dispose of organic waste, including food waste, in a way that is environmentally conscious. An important method for handling and processing food waste and organic waste is anaerobic digestion. Biogas plants serve as both a source of electricity and fertiliser while simultaneously preserving the environment

The purification of synthetic and pre-treated impure glycerol from 2 generation biodiesel refineries is addressed to reduce the ash content below 1 % wt. Electrodialysis purification has been selected for its ability to selectively remove salts from the glycerol. First, synthetic glycerol-rich samples are tested to optimise cell voltage, membrane type and time on stream to achieve the target of 1 %

The production of bio-based furfural is well known, but processes that use homogeneous catalysis with mineral acids such as sulfuric acid are environmentally and economically unfeasible. This study aimed to explore the use and reuse of niobium phosphate in aqueous media as a heterogeneous catalyst in furfural production using three types of sugarcane waste. The experiments were designed with temperature

The investigation within the green biorefinery focused on value-measuring properties of by-products derived from leaf protein concentrate production, particularly from Jerusalem artichokes. Results showed fiber fractions ranged from 17 to 28 % per 1 kg of fresh biomass, while brown juice fractions ranged from 57 to 68 %. Protein content varied from 7 to 14 m/m% for fiber and 0.3–1.4 m/m% for brown

The objective of this research was to determine the effects of cultivar and nitrogen fertilization on grain yield for human consumption and on the quantitative and qualitative value of straw as solid biofuel for combustion. The research was carried out in field trials established in the north-west of Croatia at the University of Zagreb, Faculty of Agriculture, during two growing seasons. The research

A simple, sustainable, one-pot, and highly efficient protocol for the synthesis of 5-hydroxymethyl furfural (5-HMF) and furfural from waste papers, cotton, poly/mono-meric carbohydrates using a hydrothermal reactor system has been demonstrated. The synergetic role of oxalic acid and LiCl was investigated for the conversion of different types of waste paper such as cardboard, newspaper, tissue paper

Succinic acid (SA) is an important building-block chemical that serves as a precursor for a wide variety of chemicals and materials with significant market value. Its production from renewable sources has attracted considerable attention in recent years. In this work, the suitability of industrial sorghum grain as a feedstock for SA production, using DSM 22257 and DSM 22022, was studied. The addition