Strong Metal-Support Interactions in Catalytic Oxidation of VOCs: Mechanistic Insights, Support Engineering Strategies, and Emerging Catalyst Design Paradigms.

Volatile organic compounds (VOCs) significantly impact air quality as photochemical smog precursors and health hazards. Catalytic oxidation is a leading VOC abatement method but suffers from catalyst deactivation due to metal sintering and competitive adsorption in complex mixtures. Strong metal-support interactions (SMSIs) provide atomic level control of interfacial electronic and geometric structures.

Isolating the Salt and Oil Discharging Area Enables the Continuous and Effective Purification of Saline Oily Wastewater.

Solar-driven interfacial evaporation holds promise for clean water production and wastewater treatment. However, simultaneously achieving the oil resistance and salt tolerance of evaporators remains challenging. In response, we proposed a self-rotating interfacial solar evaporator (SSE) with a superhydrophilic and underwater superoleophobic polydopamine/polypyrrole-coated nonwoven fabric (PDA/PPy-NF) layer.

Multiple defects construction of Co loading on Ni foam to activate water for promoting catalytic ozonation of dichloromethane.

Catalytic ozonation of chlorinated volatile organic compounds (Cl-VOCs) still faces with obstacles of water poisoning and byproducts formation. This work successfully synthesizes a Co-based monolithic catalyst with multiple defects construction that could activate water to promote dichloromethane (DCM) conversion and mineralization by catalytic ozonation at 120 °C. CO(NH) and NHF firstly create Ni defects to provide more adhesion sites, while they further contributed to crystallization and orientated growth of CoO with a morphology of crowded nanoneedles, respectively, as well as etching Co defects and oxygen vacancies.

Ignition, combustion and pollutant emissions characteristics of excavated waste in low oxygen concentration and O/CO atmosphere.

Excavated waste (EW) combustion has garnered increasing attention due to landfill pollution and the growing shortage of land. However, improper combustion methods can lead to substantial pollutant emissions into the atmosphere. Low oxygen combustion is a promising technique for reducing pollutant emissions from EW.

Effective decontamination of DR-81 dye from aqueous solutions using eco-friendly graphene oxide nanoparticles.

Effective management of industrial and agricultural wastes requires a multifaceted approach that considers environmental, economic, and social factors. Our ability to recover resources and create a circular bioeconomy from agricultural waste can be enhanced by implementing sustainable methods such as reducing, reusing, and recycling it. Active graphene oxide (GO) was prepared through the gasification of agricultural waste and further mixed with FeAlO catalyst for three hours at 800 °C as an efficient adsorbent.

Promoting strategies for biological stability in drinking water distribution system from the perspective of micro-nano bubbles.

Microorganisms thriving in drinking water distribution system (DWDS) reduces biological stability of water, causing numerous threats to residents' drinking water safety. Traditional disinfection methods have intrinsic drawbacks, including microbial reactivation and byproduct formation, leading to waterborne diseases. Thus, effective disinfection techniques are required to ensure the microorganism's inactivation and enhance biological stability.

Green transformation of oily sludge through geopolymer: Material properties and hydration mechanisms.

Oily sludge (OS) is a kind of hazardous waste generated from the petrochemical industry. Currently, pyrolysis has been widely applied for OS disposal, while low-oil content (<5 wt%) OS still lacks novel technology to achieve efficient resource utilization and harmful substances immobilization. In this study, a kind of OS-based geopolymer was developed by OS and ground granulated blast furnace slag (GGBS).

Intelligent technologies powering clean incineration of municipal solid waste: A system review.

Cleanliness has been paramount for municipal solid waste incineration (MSWI) systems. In recent years, the rapid advancement of intelligent technologies has fostered unprecedented opportunities for enhancing the cleanliness of MSWI systems. This paper offers a review and analysis of cutting-edge intelligent technologies in MSWI, which include process monitoring, intelligent algorithms, combustion control, flue gas treatment, and particulate control.

Comparative study by microwave pyrolysis and conventional pyrolysis of pharmaceutical sludge: Resourceful disposal and antibiotic adsorption.

Compared with conventional pyrolysis, microwave pyrolysis has superior heat transfer performance and promotes the decomposition of organic matter. The paper focuses on the harmless treatment and resource utilization of pharmaceutical sludge (PS) by microwave heating and conventional heating methods. The experimental results showed that the conventional pyrolysis gas is dominated by CO, CO and H.

Catalytic ozonation of dichloromethane at low temperature and even room temperature on Mn-loaded catalysts.

Five Mn-loaded catalysts were synthesized on γ-AlO, TiO, ZrO, nano γ-AlO and nanoZrO supports. The catalytic ozonation of DCM (dichloromethane) was evaluated under industrial conditions (, temperature, O input, HO and SO content). According to results, >90% DCM conversion without O residue was achieved for all samples at 120 °C and an O/DCM ratio of 6.

Evaluation of the Flexibility for Catalytic Ozonation of Dichloromethane over Urchin-Like CuMnO in Flue Gas with Complicated Components.

The evaluation of the poisoning effect of complex components in practical gas on DCM (dichloromethane) catalytic ozonation is of great significance for enhancing the technique's environmental flexibility. Herein, Ca, Pb, As, and NO/SO were selected as a typical alkaline-earth metal, heavy metal, metalloid, and acid gas, respectively, to evaluate their interferences on catalytic behaviors and surface properties of an optimized urchin-like CuMn catalyst. Ca/Pb loading weakens the formation of oxygen vacancies, oxygen mobility, and acidity due to the fusion of Mn-Ca/Pb-O, leading to their inferior catalytic performance with poor CO selectivity and mineralization rate.

Catalytic ozonation of CHCl over hollow urchin-like MnO with regulation of active oxygen by catalyst modification and ozone promotion.

This paper firstly reported efficient catalytic ozonation of CHCl (dichloromethane, DCM) at low temperature over hollow urchin-like MnO with high chlorine resistance. Regulations on morphologies and Cu doping, as well as ozone promotion were conducted to optimize active oxygen of MnO catalysts, contributing to excellent catalytic behaviors. Cu doping MnO with hollow urchin-like morphology attained a stable 100% DCM conversion with O/DCM molar ratio of 10 at 120 °C.

Pyrolysis Behaviors and Residue Properties of Iron-Rich Rolling Sludge from Steel Smelting.

Iron-rich rolling sludge (FeRS) represents a kind of typical solid waste produced in the iron and steel industry, containing a certain amount of oil and large amounts of iron-dominant minerals. Pyrolysis under anaerobic environment can effectively eliminate organics at high temperatures without oxidation of Fe. This paper firstly investigated comprehensively the pyrolysis characteristics of FeRS.

Utilizing waste duckweed from phytoremediation to synthesize highly efficient FeNC catalysts for oxygen reduction reaction electrocatalysis.

Duckweed is a universal aquatic plant to remove nitrogen source pollutants in the field of phytoremediation. Due to the naturally abundant nitrogen, synthesis of carbon materials from duckweed would be a high-value approach. In oxygen reduction reaction (ORR) of metal-air batteries and fuel cells, non-noble metals and heteroatoms co-doped electrocatalysts with excellent catalytic activity and remarkable stability are promising substitutes for Pt-based catalysts.

Products distribution and pollutants releasing characteristics during pyrolysis of waste tires under different thermal process.

Pyrolysis has been widely utilized to achieve resource recovery of waste tires by attaining oil and carbon black. However, due to the stacking effect of fixed bed, the heat and mass transfer is insufficient during the pyrolysis process of waste tires. Additionally, the harmful N/S/Cl pollutants and heavy metals are inevitable that has been ignored.

Triple combination of natural microbial action, etching, and gas foaming to synthesize hierarchical porous carbon for efficient adsorption of VOCs.

Fungi residue, vinasse, and biogas residue differ from general biomass waste due to natural microbial action. Microbial fermentation helps create natural channels for the permeation of activators and produces proteins for natural nitrogen doping. Inspired by these advantages on porous carbon synthesis, this study adopted dual activators of KOH and KHCO to synthesize porous carbon with different pore ratios for efficient adsorption of volatile organic compounds (VOCs).

Insoluble matrix proteins from shell waste for synthesis of visible-light response photocatalyst to mineralize indoor gaseous formaldehyde.

HCHO is the most concerned indoor air pollutant that photocatalytic degradation is a feasible approach. To achieve efficient and complete degradation of HCHO under visible light irradiation, heteroatoms are usually doped in TiO. But using natural materials as a dopant instead of expensive and toxic chemicals to fertilize TiO remains challenging.

Comparative Investigation on Chlorobenzene Oxidation by Oxygen and Ozone over a MnO/AlO Catalyst in the Presence of SO.

Catalytic oxidation of volatile organic compounds (VOCs) usually encounters complicated components in flue gas causing severe deactivation that restrict its application in specific conditions. The Cl substitution in chlorobenzene further increases poisoning risks. Ozone assistance has unique superiority that can overcome these bottleneck problems.

A critical review on energy recovery and non-hazardous disposal of oily sludge from petroleum industry by pyrolysis.

This review systematically reports the pyrolysis of oily sludge (OS) from petroleum industry in regards to its dual features of the energy recovery potential and the environmental risks. The petroleum hydrocarbons are the nonbiodegradable fractions in OS that possess hazardous properties, i.e.