Author
Fengxiao Zhu
Other affiliations: Chinese Academy of Sciences, Nanjing Normal University, University College Dublin
Bio: Fengxiao Zhu is an academic researcher from Nanjing University. The author has contributed to research in topics: Medicine & Chemistry. The author has an hindex of 8, co-authored 17 publications receiving 312 citations. Previous affiliations of Fengxiao Zhu include Chinese Academy of Sciences & Nanjing Normal University.
Topics: Medicine, Chemistry, Environmental chemistry, Phthalate, Persulfate
Papers
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TL;DR: The results of electron paramagnetic resonance, reducing radical quenching studies, and the analysis of PS consumption suggested that ARs were the dominant reactive species contributing to TCA degradation in the PS/EtOH system under anaerobic conditions.
130 citations
TL;DR: In this paper, different types of ZVI, including micro-nanostructured ZVI (nZVI), stearic-coated micro-nZMI and commercial micron-sized ZMI (mZMI), were used to activate PS to remove polycyclic aromatic hydrocarbons (PAHs) from the contaminated site.
116 citations
TL;DR: It is found that S2O8•- efficiently degrades the contaminant hexachloroethane (HCA) under anaerobic conditions, whereas HCA degradation is negligible in the presence of oxygen.
Abstract: Despite that persulfate radical (S2O8•–) is an important radical species formed from the persulfate (PS) activation process, its reactivity toward contaminant degradation has rarely been explored. In this study, we found that S2O8•– efficiently degrades the contaminant hexachloroethane (HCA) under anaerobic conditions, whereas HCA degradation is negligible in the presence of oxygen. We observed dechlorination products such as pentachloroethane, tetrachloroethylene, and Cl– during HCA degradation, which suggest that HCA degradation is mainly a reductive process under anaerobic conditions. Using free radical quenching and electron paramagnetic resonance (EPR) experiments, we confirmed that S2O8•– forms from the reaction between sulfate radical (SO4•–) and S2O82–, which are the dominant reactive species in HCA degradation. Density functional theory (DFT) calculations were used to elucidate the pathways of HCA degradation and S2O8•– radical decomposition. Further investigation showed that S2O8•– can efficient...
114 citations
TL;DR: In this article, the authors investigated the leaching behavior of phthalate plasticizer from polyvinyl chloride (PVC) microplastics, in aqueous solutions relevant to aquatic and soil environments.
60 citations
TL;DR: The results indicate that novel degraders may play an important role in DEHP degradation in natural soil environments, and provides a better understanding of the phthalate ester biodegradation processes occurring in soil.
56 citations
Cited by
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TL;DR: In this article, the up-to-date research progresses of iron-mediated activation of persulfate and peroxymonosulfate mediated by these iron-based species in both homogeneous and heterogeneous ways are summarized and discussed.
491 citations
TL;DR: Benefit from the electron transfer mechanism, the NBC/PDS system not only has wide pH adaptation for real application, but also shows high resistance to the inorganic anions in aquatic environment.
468 citations
TL;DR: Sulfate radical-based advanced oxidation processes (AOPs) have been applied in soil remediation to degrade traditional pollutants in situ, such as polychlorinated biphenyls (PCBs), diesel, polycyclic aromatic hydrocarbons (PAHs), and total petroleum hydrocarbon (TPH), and removal technology has been optimized from simple persulfate addition to coupling with various activation methods, including iron activation, thermal activation, base activation and electrical activation.
373 citations
TL;DR: This review provides a detailed systematic compilation of the eco-friendly biological treatment solutions for remediation of PAHs such as microbial remediation approaches using bacteria, archaea, fungi, algae, and co-cultures.
Abstract: Polycyclic aromatic hydrocarbons (PAHs) are widespread across the globe mainly due to long-term anthropogenic sources of pollution. The inherent properties of PAHs such as heterocyclic aromatic ring structures, hydrophobicity, and thermostability have made them recalcitrant and highly persistent in the environment. PAH pollutants have been determined to be highly toxic, mutagenic, carcinogenic, teratogenic, and immunotoxicogenic to various life forms. Therefore, this review discusses the primary sources of PAH emissions, exposure routes, and toxic effects on humans, in particular. This review briefly summarizes the physical and chemical PAH remediation approaches such as membrane filtration, soil washing, adsorption, electrokinetic, thermal, oxidation, and photocatalytic treatments. This review provides a detailed systematic compilation of the eco-friendly biological treatment solutions for remediation of PAHs such as microbial remediation approaches using bacteria, archaea, fungi, algae, and co-cultures. In situ and ex situ biological treatments such as land farming, biostimulation, bioaugmentation, phytoremediation, bioreactor, and vermiremediation approaches are discussed in detail, and a summary of the factors affecting and limiting PAH bioremediation is also discussed. An overview of emerging technologies employing multi-process combinatorial treatment approaches is given, and newer concepts on generation of value-added by-products during PAH remediation are highlighted in this review.
346 citations
TL;DR: This review aims to concisely highlight recent state-of-the-art progress of g-C3N4-based catalysts in AOPs beyond photocatalytic oxidation and the effect of water chemistry including pH, water temperature, natural organic matter, inorganic anions and dissolved oxygen on the catalytic performance.
326 citations