Survey Dataset Supporting Blue Circular Economy Strategies for Bivalve Shell Waste Valorisation.

Microwave-assisted carbothermic reduction of red mud using palm kernel shell charcoal: A circular economy approach for sustainable iron recovery

Water–energy–food nexus in the circular economy: implications for climate mitigation

Agricultural processing leaves behind many residues that could be further utilized, for example for heating. Among currently unused crop residues are those of Melilotus albus , Medicago sativa , Medicago lupulina , Sinapis alba , Hordeum vulgare and Trifolium incarnatum . Various samples of these plants were pelletized for the purposes of this study. All pellets were subsequently thoroughly analyzed and then combusted in a 25 kW boiler. Several similarities in their combustion behavior were observed: no slagging, high PM emissions (due to high K and Cl content), high NO x emissions and the production of soft, powdery ash rich in nutrients. The ash elemental composition of the raw fuels plotted in an SCK ternary diagram indicated such behavior was likely to occur. This method could thus be utilized by boiler operators when looking for possible fuel replacement or supplementation. A widely used biofuel of similar inorganic composition, in this case sunflower husks, was used to successfully confirm this hypothesis. The use of fertilizers on fodder crops increases the environmental impact of their subsequent combustion, however, the high retention rates of essential plant nutrients in the produced ash make it a valuable commodity in circular economy. • Fodder crop residues can be used as supplementary feedstock to similar biofuels. • The SCK ternary diagram serves as an accurate indicator of biofuel behavior. • CK and K-group fuels produce quality soft and powdery ash rich in nutrients. • CK and K-group fuels are prone to high PM emissions. • Bottom-feed retort burners are recommended for firing CK/K-group fuels.

New kid in town: the Mediterranean outbreak of Callinectes sapidus, its road to valorization and the Italian paradox.

From waste to clean Energy: Green synthesis of hybrid Nano-Catalysts for biodiesel production from waste cooking oils and animal fats.

Supercritical fluid extraction method for multi class bioactives: a sustainable approach to Olea europaea pruning residue valorization.

Operationalising circular economy and resilience in water management systems in an increasingly uncertain world

Dual valorization of seaweed-industry wastes into mechanically robust activated carbon pellets for CO2 capture

Electrocatalytic upcycling of textile wastewater and green hydrogen production using WSe2/Ti3C2Tx||PCE electrode in a circular economy approach

Upcycling herbal medicine waste into functional biochar catalysts featuring high mineralization and thermal regenerability for advanced water treatment.

Advances in heterogeneous photocatalytic selective oxidation of toluene.

The reduction of carboxylic acid derivatives to alcohols and amines ranks among the most fundamental transformations in synthetic chemistry, with molecular hydrogen offering an atom-economical and sustainable approach to access these valuable products. While these reactions have traditionally relied on noble metal catalysts, the past decade has witnessed remarkable progress in the development of earth-abundant 3d transition metal alternatives. This review surveys recent advances in homogeneous manganese, iron, and cobalt catalysis for the hydrogenation of esters, amides, and nitriles. Special emphasis is placed on ligand design strategies, ranging from classical pincer architectures featuring metal-ligand cooperation to emerging N-heterocyclic carbene and non-pincer frameworks. For each metal, we discuss the evolution of catalytic systems, their substrate scope, and operational characteristics. Mechanistic aspects are examined in detail, revealing diverse activation modes including outer-sphere and inner-sphere pathways, aromatization-dearomatization processes, and Lewis acid-base cooperativity. The review highlights how increasing electron density at the metal center through ligand modification enhances hydride donor ability and catalytic activity. Recent breakthroughs in polyester depolymerization and challenging substrate classes demonstrate the potential of these base metal catalysts for circular economy applications. This comprehensive overview provides a foundation for future catalyst development and mechanistic investigation in this rapidly evolving field. • Comprehensive review on manganese, iron and cobalt catalysts for hydrogenation of esters, amides and nitriles • Mechanistic analysis reveals diverse pathways beyond classical MLC cooperativity • Recent advances enable polyester depolymerization for circular economy applications

Thermal degradation and phase partitioning characteristics of non-metallic fractions in waste printed circuit boards.

The circularity of textile waste: A systematic literature review on environmental methodologies and knowledge gaps.

Optimising textile waste pyrolysis for high-performance activated carbons: Fibre-dependent behaviour and synergistic effects in mixed waste streams.

Metrology of rare earths and other elements in waste fluorescent lamp powder - A methodological comparison.

Bioactive carbon dots from peony seed meal for nanomedicine via circular economy.

Sustainable starch-based barrier materials: functional advancements for a plastic-free food packaging future.

How can generative artificial intelligence empower circular supply chain practices? Evidence from Chinese companies