Application of persulfate-based oxidation processes to address diverse sustainability challenges: A critical review.

The rapid development of nanomaterials (NMs) and the emergence of new multicomponent NMs will inevitably lead to simultaneous exposure of organisms to multiple engineered nanoparticles (ENPs) at varying exposure levels. Understanding the joint impacts of multiple ENPs and predicting the toxicity of mixtures of ENPs are therefore evidently of importance. We reviewed the toxicity of mixtures of ENPs to a variety of different species, covering algae, bacteria, daphnia, fish, fungi, insects, and plants. Most studies used the independent-action (IA)-based model to assess the type of joint effects. Using co-occurrence networks, it was revealed that 53% of the cases with specific joint response showed antagonistic, 25% synergistic, and 22% additive effects. The combination of nCuO and nZnO exhibited the strongest interactions in each type of joint interaction. Compared with other species, plants exposed to multiple ENPs were more likely to experience antagonistic effects. The main factors influencing the joint response type of the mixtures were (1) the chemical composition of individual components in mixtures, (2) the stability of suspensions of mixed ENPs, (3) the type and trophic level of the individual organisms tested, (4) the biological level of organization (population, communities, ecosystems), (5) the exposure concentrations and time, (6) the endpoint of toxicity, and (7) the abiotic field conditions (e.g., pH, ionic strength, natural organic matter). This knowledge is critical in developing efficient strategies for the assessment of the hazards induced by combined exposure to multiple ENPs in complex environments. In addition, this knowledge of the joint effects of multiple ENPs assists in the effective prediction of hybrid NMs.

Review and Prospects on the Ecotoxicity of Mixtures of Nanoparticles and Hybrid Nanomaterials

• Mechanisms of anaerobic digestion promoted by biochar are identified and discussed. • Effects of biochar application in anaerobic digestion on environment are evaluated. • Biochar application promotes development of anaerobic digestion circular economy . • A promising solution for achieving sustainable development is provided. Understanding on effectiveness of biochar application in anaerobic digestion while attaching importance to impact of this process on environment and circular economy have been gaining more and more attention. In this review the influences of biochar application in anaerobic digestion on methane production, system stability, lag period, and in-situ biogas purification and upgradation are systematically identified and discussed. Notably, the underlying mechanisms of buffering effect, direct interspecies electron transfer, microbial immobilization, disinhibition effect, and quorum sensing are analyzed. Meanwhile, the impacts of biochar application in anaerobic digestion on pollutant removal, waste management, and greenhouse gas emission reduction are comprehensively evaluated. Furthermore, a specific attention is paid to the roles of biochar in promoting anaerobic digestion circular economy. Finally, based on current challenges, future perspectives are proposed for engineering practice. The aim of this review is to gain insight into biochar application in anaerobic digestion from the perspective of performance improvement, environmental friendliness and economic sustainability. 

Biochar application in anaerobic digestion: Performances, mechanisms, environmental assessment and circular economy

Construction of a novel S-scheme heterojunction piezoelectric photocatalyst V-BiOIO3/FTCN and immobilization with floatability for tetracycline degradation.

The presence of an increasing number of organic pollutants in water now poses serious risks to both human health and ecological systems. Many of these pollutants are persistent and non-biodegradable. The contamination of fresh water by harmful substances has compelled researchers to develop innovative, efficient, and cost-effective water remediation techniques and materials. Thus, photocatalysis has long been recognized as a promising approach to tackle both environmental remediation and the energy crisis. However, semiconductor photocatalysts frequently suffer from defects such as photo-generated charge carrier recombination, poor visible light response, and slow surface reaction kinetics, which can be remedied by modifications with appropriate co-catalysts. Therefore, graphene and its derivatives have widely been used as supports for semiconductors and photocatalysts due to their distinctive optical, physicochemical, and electrical features. This critical review addresses the current progress in the design and synthesis of graphene/semiconductor photocatalysts, as well as their use in photocatalytic degradation of organic pollutants and hydrogen production. Several influencing parameters are addressed, including pH, photocatalyst loading, initial pollutant concentration, light wavelength, and oxidizing species, all of which could have a significant impact on the rate of organic pollutant's degradation. Furthermore, the recyclability of the catalyst and its photocatalytic activity mechanisms are thoroughly discussed. Numerous case studies are systematically presented. Moreover, future prospects and major challenges are highlighted.

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Recent progress in semiconductor/graphene photocatalysts: synthesis, photocatalytic applications, and challenges

The effects of biochar on antibiotic resistance genes (ARGs) removal during different environmental governance processes: A review.

Hydrogen peroxide-impregnated supramolecular precursors synthesize mesoporous-rich ant nest-like filled tubular g-C3N4 for effective photocatalytic removal of pollutants

Activation of Peroxydisulfate by Bimetal Modified Peanut Hull-Derived Porous Biochar for the Degradation of Tetracycline in Aqueous Solution

https://www.mdpi.com/2076-393X/8/1/121/pdf

Xiansheng Zhang

Papers

The effects of biochar on antibiotic resistance genes (ARGs) removal during different environmental governance processes: A review.

Hydrogen peroxide-impregnated supramolecular precursors synthesize mesoporous-rich ant nest-like filled tubular g-C3N4 for effective photocatalytic removal of pollutants

Activation of Peroxydisulfate by Bimetal Modified Peanut Hull-Derived Porous Biochar for the Degradation of Tetracycline in Aqueous Solution

A Novel Peptide Isolated from a Phage Display Peptide Library Modeling Antigenic Epitope of DHAV-1 and DHAV-3.

Disinfection byproducts formation from emerging organic micropollutants during chlorine-based disinfection processes