The separation of ternary azeotropic mixtures is a common challenge in the chemical industry due to the unique properties of azeotropes. This phenomenon complicates the separation processes, as traditional distillation methods may not effectively separate the components. The present work introduces a novel pressure-swing distillation (NPSD) process integrated with natural decanting for the effective

In order to address the current global warming, this work proposes CO2 capture from flue gas and CO2 hydrogenation to produce methane, methanol, and CO2 to produce ammonium bicarbonate. Aspen Plus process simulation model is developed for the three processes. Based on the thermodynamic model, sensitivity analysis of main operating parameters is conducted on the energy, economic, environment, and exergy

Membrane technologies are extensively employed for the separation of surfactant-stabilized oil/water emulsions due to their high efficiency and selectivity. Either membrane filtration or demulsification experiences performance reduction due to the monotonous increase or decrease in emulsion concentration over time. In this study, we have developed a dual-membrane module that integrates a hydrophilic

In recent years, the synergistic effect between photocatalysis and persulfate (PS) has been widely used in the field of water treatment. In this work, Bi loaded B-BiVO4/Bi nanofibers were prepared by electrospinning, in-situ reduction and hydrothermal method. Under visible light irradiation, the degradation efficiency of B-BiVO4/Bi on levofloxacin (LVF) reached 61.09 % within 70 min. When persulfate

The effective separation of ethyl tert-butyl ether (ETBE) and ethanol (EtOH) azeotropes during the production of gasoline additive ETBE has far-reaching significance for resource recovery and sustainable development. This work first proposed using green and sustainable deep eutectic solvents (DESs) to separate ETBE-EtOH efficiently. As an analog of ionic liquids, DESs are environmentally friendly,

The waste heat utilization in the coal-fired plant has always been one of important ways of the energy saving. In this paper, a novel device is constructed by the combination of the ceramic membrane desorption and the flue gas waste heat utilization. In the device, the absorption solution is the “double-cationic” ionic liquid ([TEPA][1-MIm]). Furthermore, experimental results show that the contact

Metal-based catalyst could be used for efficient peroxymonosulfate (PMS) activation, but inevitably suffered from metal ion leaching. Metal-free graphitic carbon nitride (g-C3N4) materials that can activate PMS are more conducive for practical water treatment. In this study, g-C3N4 with both N-defects and P-doping (CN-NP) was synthesized, which mainly produce singlet oxygen (1O2), and 97 % of 4-CP

This study explores a novel multi-stage process for recovering valuable nutrients–nitrogen, phosphorus, and potassium–from real hydrolyzed urine as value-added products. The approach utilizes a combination of membrane contactor, zeolite ion exchange, and mineral precipitation techniques. A closed-loop system was established by reusing the acid regeneration solution from ion exchange as the acid-stripping

Oil droplets are inevitably deposited on the surface of membranes, resulting in membrane contamination during oily sewage separation. To effectively prevent oil fouling, a TiO2@MXene membrane with an ultra-glossy hydrophilic surface was designed via in-situ thermal induction to regulate the membrane surface structure and properties. Through high temperature-induced evolving the Ti valence and the functional

Residues from orange processing are being continuously generated in vast amounts due to the increasing demand for this fruit and its byproducts worldwide. The valorization of Orange Residues is challenging in contrast to conventional “lignocellulosic residues” since this fruit-derived biomass contains high amounts of pectin and an extractive fraction rich in sugars, essential oils, and polyphenols

Flue gas treatment typically involves multiple scrubbing and absorbing stages, which increases capital and operating costs and requires large spaces; this process is particularly challenging for space-constrained ships. To address this issue, a highly practical, compact, efficient, intensified marine process for a diesel engine that simultaneously removes NOx and SOx to meet the current IMO MARPOL

The application of solid-acid catalysts in the regeneration process of CO2-rich amine solutions is currently considered as a promising method for reducing the relative heat duty of CO2 capture processes. In this study, sepiolite (SEP) was selected as a cost-efficient catalyst carrier to support the solid superacid SO42-/ZrO2 (SZ) for preparing a series of composite SO42−/ZrO2‑SEP (SZ@SEP) catalysts

A concurrent approach, which allows for determining multi-component equilibrium isotherms and designing a multi-component adsorption process within a realistic amount of time and effort, is demonstrated for the first time in a moving bed process using an amine-impregnated solid adsorbent in the presence of CO2 and H2O. The proposed approach extracts measurement points for the binary isotherms from

The activity and selectivity of the carbon dioxide reduction reaction (CO2RR) can be significantly enhanced by altering the electronic structure of central transition-metal atoms in single-atom catalysts (SACs). However, the role of mass transport in catalyst design, though critical, is frequently overlooked. Herein, a single-atom Ni-N-C(P)-8 catalyst featuring hierarchical micropores and mesopores

Chitosan (CS) and sodium alginate (SA) were used as the base materials. A Schiff base reaction was successfully conducted between the amino groups in chitosan and benzaldehyde to synthesize benzaldehyde-chitosan (B-CS) with protected amino groups. Subsequently, B-CS was modified with (3-mercaptopropyl)trimethoxysilane to introduce thiol functional groups and remove benzaldehyde, resulting in thiol-functionalized

This paper investigates the integration of the Sweeping Gas Membrane Distillation (SGMD) module with two stages of the Bubble Column Dehumidifier (BCD). The initial stage of the BCD incorporates environmental water at ambient temperature for dehumidification purposes, whereas the subsequent stage employs chilled water. A comparative analysis is conducted between the proposed system and a conventional