Results 81 to 90 of about 26,704 (271)

Comparative field‐scale assessment of TLUD and Kon‐Tiki biochar systems: agronomic performance and net CO2e‐based techno‐economics

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Post‐harvest agricultural residues in Latin America are commonly underutilized, leading to greenhouse gas emissions and lost opportunities for bio‐based value creation. This study tests the hypothesis that decentralized, farmer‐scale pyrolysis technologies can deliver comparable agronomic benefits while exhibiting distinct techno‐economic and ...
Juan F. Saldarriaga   +7 more
wiley   +1 more source

Extraction of CaFexMn1-xO3-δ perovskite reduction/re-oxidation thermodynamics via the CrossFit CEF algorithm: a thermochemical energy storage application

open access: yesDiscover Chemical Engineering
Thermochemical energy storage (TCES) offers a pathway to store surplus electricity or heat as combined chemical plus thermal energy with high density, long-duration capability, and the ability to transport stored energy as stable solids.
Steven A. Wilson   +6 more
doaj   +1 more source

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas   +16 more
wiley   +1 more source

Two-Stage Solar–NaOH Thermochemical Heat Pump Heating System for Building Heating: Operations Strategies and Theoretical Performance

open access: yesEnergies
Heating buildings with solar energy is challenged by the seasonal mismatch between solar availability and heating demand. Thermochemical energy storage is a promising technology to overcome this challenge because of its high energy density.
Yujie Su   +4 more
doaj   +1 more source

Thermochemical generation of hydrogen [PDF]

open access: yes, 1982
The direct fluid contact heat exchange with H2SO4 at about 330 C prior to high temperature decomposition at about 830 C in the oxygen release step of several thermochemical cycles for splitting water into hydrogen and oxygen provides higher heat transfer
Lawson, D. D., Petersen, G. R.
core   +1 more source

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Photocatalytic CO2 Reduction Over BiOX on Needle Coke–Derived Graphene Composites

open access: yesCarbon and Hydrogen, EarlyView.
By in situ growing BiOX on needle coke–derived graphene to construct a composite photocatalyst, interfacial charge transfer is effectively enhanced. The optimized BiOBr‐25%NCG achieves a CO production rate of 46.32 μmol·g−1·h−1 from photocatalytic CO2 reduction without sacrificial agents.
Tongyu Wu   +7 more
wiley   +1 more source

A Review of Thermochemical Energy Storage Systems for District Heating in the UK

open access: yesEnergies
Thermochemical energy storage (TCES) presents a promising method for energy storage due to its high storage density and capacity for long-term storage. A combination of TCES and district heating networks exhibits an appealing alternative to natural gas ...
Sarah Roger-Lund   +4 more
doaj   +1 more source

Hydrogen at the rooftop: Compact CPV-hydrogen system to convert sunlight to hydrogen [PDF]

open access: yes, 2018
Despite being highest potential energy source, solar intermittency and low power density make it difficult for solar energy to compete with the conventional power plants. Highly efficient concentrated photovoltaic (CPV) system provides best technology to
Burhan, Muhammad   +2 more
core   +1 more source

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