Fragment of chemical reactor equipment, glass pipe. © nordroden@AdobeStock

The article deals with the synthesis of graphene oxide through modified Hummer's method. Functionalized graphene oxide acts as an adsorbent for contaminants present in wastewater. This article contains a detailed mechanism of adsorption.

A comprehensive review of tungsten trioxide (WO₃) gasochromic hydrogen sensors is presented, covering various forms such as powders, thin films, coatings, flexible materials, and colloids. Compared to traditional electronic sensors, WO₃-based gasochromic sensors operate without an external power supply, making them more suitable for intrinsic safety applications.

This paper presents a thorough techno-economic analysis of a direct ammonia SOFC-integrated system. The levelized cost of electricity (LCOE) spans from 0.482 to 0.554 $ (kW h)⁻¹, showing a variation of approximately 6.2 % from the average LCOE. For unsubsidized and subsidized utility costs, the discounted payback period is calculated to be between 6.7 and 9.5 years, respectively.

The separation of non-ideal mixtures can be presented and understood if a graphical presentation in a spatial tetrahedron is available. The features of the singular points can be determined with the help of the six rules presented here. The extractive heterogeneous azeotropic distillation can be efficiently used for their separation.

In the conversion of carbon dioxide (CO₂) into higher-value hydrocarbons, iron-based catalysts exhibit promising properties with regard to activity and selectivity. FeCuZnK demonstrated the most favorable results when the CO₂/CO feed gas ratio, temperature, and CO₂ conversion were varied, achieving the highest CO₂ conversions and yields of higher hydrocarbons. Using a kinetic model, the experimental results of FeCuZnK could also be reproduced with a high degree of accuracy.

The crushing and cleaning machine W4000 is compared with the impact crusher, screening machine, zig-zag sifter and separating table for the basic operations of crushing, screening and sifting in order to deshell cocoa beans. The decisive factor for the success of the systems is the proportion of shells in the product stream and the proportion of nibs in the shell stream.

A solvent-free continuous flow synthesis for benzoxazine (Bz) monomer MP-b achieved high conversion, yield, and ring-closed ratio (RCR) while drastically reducing reaction time. Effects of RCR on the thermal, hydrophobic, and antibacterial properties of Bz were fully investigated, providing key insights for optimizing PBz applications.

Discover a sustainable solution for tackling toxic organophosphates. Using bio-based linkers and water as a solvent, we synthesize eco-friendly Zr-fumarate and MIP-202 composites on fabric, achieving enhanced degradation rates. These composites outperform traditional MOFs like UiO-66-NH₂, rapidly breaking down harmful chemicals, with applications in filtration, protective gear, and catalysis.

The study demonstrates that magnetic biochar effectively removes 98 % of hexavalent chromium from aqueous solutions. Langmuir isotherm and pseudo-second-order models were the best fit models for adsorption, and 0.3 M HCl recovered more than 95 % of Cr(VI) than other concentrations.

The use of planetary ball milling to activate stainless steel slag to improve the carbonation rate and overall carbon dioxide uptake.

This study investigates the use of ionic liquids in the separation process. Two ILs were identified as optimal for this application, which was achieved through the solution of a formulated MINLP problem based on CAILD. Overall, the significant energy and environmental benefits of IL-based processes highlight their potential in styrene production.

Cu(0) and Ag(0) alone have weak adsorption ability for thiophenic compounds, whereas the combination of Cu(0) and Ag(0) has strong ability. Cu²⁺ and Ag⁺ have no adsorption ability.