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Items from 1 to 20 out of 15,859 results

article

Major accident hazard in bioenergy production

Valeria Casson Moreno, Valerio Cozzani, V. Casson Moreno, V. Cozzani

Journal of Loss Prevention in the Process Industries > 2015 > 35 > Complete > 135-144

Some recent accidents involving the bioenergy production and feedstock supply chain raised concern on the safety of such technologies. A survey of major accidents related to the production of bioenergy (intended as biomass, bioliquids/biofuels and biogas) was carried out, and a data repository was built, based on past accident reports available in the open literature and in specific databases. Data...

article

Population balance model for biomass milling

Miguel Gil, Ennio Luciano, Inmaculada Arauzo, M. Gil, more

Powder Technology > 2015 > 276 > Complete > 34-44

The aim of this work is to develop a model of the milling process of biomass. For this purpose, a classic approach is selected. The breakage probability, characterized by a material mastercurve, and breakage function are used to determine the breakage matrix. A classification function is also proposed, based on physics of the process itself and the calculation of the impact number for a particle....

article

Approach to the breakage behavior of comminuted poplar and corn stover under single impact

Miguel Gil, Ennio Luciano, Inmaculada Arauzo, M. Gil, more

Fuel Processing Technology > 2015 > 131 > Complete > 142-149

Breakage behavior under impact of two different types of biomass resources (poplar and corn stover) is characterized, taking into account the influences of the impact energy, of the number of impacts, of the input particle size and of the material properties itself. Within corn stover, two fractions showed different breakage behavior and they were analyzed separately: corn cob and corn stalk and leaves...

article

An Experimental Study on Synthetic Gas (Syngas) Production through Gasification of Indonesian Biomass Pellet

Rizal Alamsyah, Enny Hawani Loebis, Eko Susanto, Lukman Junaidi, more

Energy Procedia > 2015 > 65 > Complete > 292-299

The research was purposed to produce environmentally friendly biomass pellets as syngas fuel. The produced pellets dimension is 18mm to 25mm (length) and 4.5mm (diameter). The best pellets made from single material is palm shell pellets with gasification time of 85min · kg ^–1 biomass. The best pellets made from material mix is sugarcane bagasse and palm shell pellets, with similar gasification...

article

Supercritical fluid extraction of vegetable matrices: Applications, trends and future perspectives of a convincing green technology

M.M.R. de Melo, A.J.D. Silvestre, C.M. Silva, M.M.R. de Melo, more

The Journal of Supercritical Fluids > 2014 > 92 > Complete > 115-176

Along more than a decade, R&D on supercritical fluid extraction (SFE) of vegetable matrices has been increasingly reported in the literature. Aiming at portraying the current state of this field and its evolution in terms of raw materials, products, modes of operation, optimization, modeling techniques, and closeness to industrial application, a large compilation of almost 600 essays from 2000...

article

Ammonia inhibition on Arthrospira platensis in relation to the initial biomass density and pH

Giorgos Markou, Dries Vandamme, Koenraad Muylaert, G. Markou, more

Bioresource Technology > 2014 > 166 > Complete > 259-265

In this study the combined effect of total ammoniacal nitrogen (TAN) concentration, initial biomass density and initial pH of the cultivation medium on growth of Arthrospira platensis was studied. The results indicate that TAN inhibition in relation to the initial biomass in unregulated pH cultures is neither a clearly biomass-independent nor biomass-dependent phenomenon. However, low biomass densities...

article

Single-step fermentation of agricultural hemp residues for hydrogen and ethanol production

Valery Agbor, Francesco Zurzolo, Warren Blunt, Christopher Dartiailh, more

Biomass and Bioenergy > 2014 > 64 > Complete > 62-69

We have investigated a one-step fermentation process using purified hemp cellulose (PHC), hemp fibres (HF), and hemp hurds (HH), compared to reagent-grade α-cellullose (AC) for ethanol and hydrogen production by Clostridium thermocellum. Exponential phase growth and production rates on PHC were comparable to those observed with AC. Net production of ethanol for AC (8.47 mM) was only slightly higher...

article

Four Zones Modeling of the Downdraft Biomass Gasification Process: Effects of Moisture Content and Air to Fuel Ratio

C. Dejtrakulwong, S. Patumsawad, C. Dejtrakulwong, S. Patumsawad

Energy Procedia > 2014 > 52 > Complete > 142-149

A mathematical model of a biomass downdraft gasification process has been developed. The model was considered to be four modules that are drying, pyrolysis, oxidation, and reduction which the products of upper module will be the reactants of the next. The one-dimensional kinetic finite rate models were applied to drying and reduction modules. The pyrolysis model took place when drying temperature...

article

Conversion, intensification, and abandonment: A human appropriation of net primary production approach to analyze historic land-use dynamics in New Zealand 1860–2005

Tamara Fetzel, Markus Gradwohl, Karl-Heinz Erb, T. Fetzel, more

Ecological Economics > 2014 > 97 > Complete > 201-208

This study presents a national level analysis of changes in land use and land cover in New Zealand from 1860 to 2005. We employ the Human Appropriation of Net Primary Production (HANPP) framework to assess land use induced impacts on ecological energy flows by accounting for socioeconomic harvest and productivity losses through land use change. By analyzing the interplay of socioeconomic dynamics,...

article

Integrating airborne LiDAR and space-borne radar via multivariate kriging to estimate above-ground biomass

Olivier W. Tsui, Nicholas C. Coops, Michael A. Wulder, Peter L. Marshall, more

Remote Sensing of Environment > 2013 > 139 > Complete > 340-352

Understanding and investigating synergies between LiDAR (light detection and ranging) and SAR (synthetic aperture radar) provide new and innovative opportunities to characterize above-ground biomass. We demonstrate a spatial modeling framework that integrates above-ground biomass transects, derived from plot-based field data and small-footprint discrete return LiDAR, with complete wall-to-wall spaceborne...

article

Continuous hydrogen production by biomass gasification in supercritical water heated by molten salt flow: System development and reactor assessment

Peng Xiao, Liejin Guo, Ximin Zhang, Chao Zhu, more

International Journal of Hydrogen Energy > 2013 > 38 > 29 > 12927- 12937

Hydrogen production by biomass gasification using solar energy is a promising approach for overcoming the drawbacks of fossil fuel utilization, but the storage of discontinuous solar flux is a critical issue for continuous solar hydrogen production. A continuous hydrogen production system by biomass gasification in supercritical water using molten-salts-stored solar energy was proposed and constructed...

article

The comparison of site spider “biodiversity quality” in Portuguese protected areas

Alan Feest, Pedro Cardoso

Ecological Indicators > 2012 > 14 > 1 > 229-235

Spiders at 23 Portuguese protected area sites were sampled (pitfall trapped) over 10-month periods. The data allowed for a “biodiversity quality” assessment consisting of the following indices: Species Richness, Biomass, Simpson Index, Species Conservation Value Index and Population Density. These “biodiversity quality” characteristics were reviewed for relative indication of site spider “biodiversity...

article

Filling model for the working multi-disc biomass grain grinding unit

Tomporowski, Andrzej, Tomporowski, Andrzej

Archive of Mechanical Engineering > 2012 > 59 > 2

article

Impact of spatial variability of tropical forest structure on radar estimation of aboveground biomass

Sassan Saatchi, Miriam Marlier, Robin L. Chazdon, David B. Clark, more

Remote Sensing of Environment > 2011 > 115 > 11 > 2836-2849

Understanding the spatial variability of tropical forest structure and its impact on the radar estimation of aboveground biomass (AGB) is important to assess the scale and accuracy of mapping AGB with future low frequency radar missions. We used forest inventory plots in old growth, secondary succession, and forest plantations at the La Selva Biological Station in Costa Rica to examine the spatial...

article

Boron‐Nitrogen‐Edged Biomass‐Derived Carbon: A Multifunctional Approach for Colorimetric Detection of H₂O₂, Flame Retardancy, and Triboelectric Nanogenerator

Anteneh F. Baye, Medhen W. Abebe, Hern Kim

Small > 20 > 40 > n/a - n/a

Enhancing the concentration and type of nitrogen (N) dopants within the Sp²‐carbon domain of carbon recycled from biomass sources is an efficient approach to mimic CNT, GO, and rGO to activate oxidants such as H₂O₂, excluding toxic chemicals and limiting reaction steps. However, monitoring the kind and concentration of N species in the Sp²‐C domain is unlikely with thermal treatments only. A high...

article

Nitrogen‐fixing plants increase soil nitrogen and neighbouring‐plant biomass, but decrease community diversity: A meta‐analysis reveals the mediating role of soil texture

Sarah K. Ortiz, Amelia A. Wolf

Journal of Ecology > 112 > 10 > 2374 - 2385

Several recent regional studies have cast doubt on the widespread assumption that nitrogen‐fixing plants (N‐fixers) act as facilitators of neighbouring plant communities. We conducted a meta‐analysis to synthesize the effects of N‐fixers on plant communities and to understand how ecological context moderates these effects. We analysed studies that assessed paired effects of N‐fixers and non‐fixers...

article

An Intelligent, Recyclable, Biomass Film for Adaptive Day‐Night and Year‐Round Energy Savings

Zhi‐Wei Zeng, Bo Tang, Fu‐Rong Zeng, Hao Chen, more

Advanced Functional Materials > 34 > 39 > n/a - n/a

Passive radiative cooling is a zero‐energy technology vital for mitigating the energy crisis. However, achieving intelligent thermal management across varying weather conditions (day/night and summer/winter) while maintaining sustainability is a significant challenge. Here, a recyclable biomass film engineered for adaptive, year‐round energy conservation is introduced. This film utilizes porous acetyl...

article

CO₂ and Lignin‐Based Sustainable Polymers with Closed‐Loop Chemical Recycling

Arijit Ghorai, Hoyong Chung

Advanced Functional Materials > 34 > 39 > n/a - n/a

This work highlights the conversion method of chaining up greenhouse gas CO₂ with biomass lignin to develop new sustainable, recyclable polymers from abundant and non‐food based renewable resources. A cyclic carbonate monomer has synthesized using a cost‐effective, non‐phosgene‐based, and greener approach under atmospheric pressure and room temperature. The fully programable ring‐opening polymerization...

article

Hydrogen production from aqueous‐phase reforming of glycerol, sorbitol, and glycine over Pt/Al₂O₃ catalyst in a fixed‐bed reactor

Vinayak N. Kalekar, Prakash D. Vaidya

International Journal of Chemical Kinetics > 56 > 11 > 674 - 686

Aqueous‐phase reforming (APR) is an interesting technique for generating hydrogen (H₂) from biofeeds. In this work, APR of model compounds of wet biomass for H₂ production was investigated. Glycerol, sorbitol, and glycine were the chosen model compounds. They represent polyols and amino acids in wet biomass such as waste sludge and microalgal biomass. The Pt/Al₂O₃ catalyst was preferred and it was...

article

Thirty years of stasis in the dynamics of the Knysna Afro‐montane forest, South Africa

Jeremy J. Midgley, Michael D. Cramer, Graham Durrheim

Austral Ecology > 49 > 9 > n/a - n/a

We analysed nearly 31 years (1991–2022) of tree population dynamics in 108 permanent plots each 0.04 ha of the Lilyvlei Nature Reserve, a section of the Knysna Forest in South Africa which has not historically been disturbed by harvesting. The Knysna Forest is the only large piece of forest in South Africa and is marginal for tall forest, having low mean annual rainfall of only about 1000 mm and occurs...

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Search results

Major accident hazard in bioenergy production

Population balance model for biomass milling

Approach to the breakage behavior of comminuted poplar and corn stover under single impact

An Experimental Study on Synthetic Gas (Syngas) Production through Gasification of Indonesian Biomass Pellet

Supercritical fluid extraction of vegetable matrices: Applications, trends and future perspectives of a convincing green technology

Ammonia inhibition on Arthrospira platensis in relation to the initial biomass density and pH

Single-step fermentation of agricultural hemp residues for hydrogen and ethanol production

Four Zones Modeling of the Downdraft Biomass Gasification Process: Effects of Moisture Content and Air to Fuel Ratio

Conversion, intensification, and abandonment: A human appropriation of net primary production approach to analyze historic land-use dynamics in New Zealand 1860–2005

Integrating airborne LiDAR and space-borne radar via multivariate kriging to estimate above-ground biomass

Continuous hydrogen production by biomass gasification in supercritical water heated by molten salt flow: System development and reactor assessment

The comparison of site spider “biodiversity quality” in Portuguese protected areas

Filling model for the working multi-disc biomass grain grinding unit

Impact of spatial variability of tropical forest structure on radar estimation of aboveground biomass

Boron‐Nitrogen‐Edged Biomass‐Derived Carbon: A Multifunctional Approach for Colorimetric Detection of H₂O₂, Flame Retardancy, and Triboelectric Nanogenerator

Nitrogen‐fixing plants increase soil nitrogen and neighbouring‐plant biomass, but decrease community diversity: A meta‐analysis reveals the mediating role of soil texture

An Intelligent, Recyclable, Biomass Film for Adaptive Day‐Night and Year‐Round Energy Savings

CO₂ and Lignin‐Based Sustainable Polymers with Closed‐Loop Chemical Recycling

Hydrogen production from aqueous‐phase reforming of glycerol, sorbitol, and glycine over Pt/Al₂O₃ catalyst in a fixed‐bed reactor

Thirty years of stasis in the dynamics of the Knysna Afro‐montane forest, South Africa

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