Author
Lianhong Wang
Bio: Lianhong Wang is an academic researcher from Nanjing University. The author has contributed to research in topics: Tetrabromobisphenol A & Mineralization (soil science). The author has an hindex of 21, co-authored 55 publications receiving 1879 citations.
Papers published on a yearly basis
Papers
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TL;DR: The findings underlined the high potential ecological risks of FPs, and suggested that NPs should be given more concerns, in terms of their interaction with hydrophobic pollutants in the environment.
432 citations
TL;DR: The toxicity of the photolysis compounds was evaluated using luminescent bacterium, and the results revealed that the toxicity increased with irradiation, indicative of a higher adversity risk of the degradation products of TC on bacteria uponphotolysis.
380 citations
TL;DR: An increased effect of toxicity occured in spite of the great consumption of OTC in the photoirradiation process, revealing a potentially higher adversity risk on the microorganism upon OTC photolysis.
Abstract: The extensive use of antibiotics has been a worldwide environmental issue. In this study the fate of oxytetracycline (OTC), under photoirradiation, was investigated. The results showed that OTC photolysis followed first order model kinetics. Direct photolysis rate was found to be dependent on the initial OTC concentration, with k value ranging from 0.0075 to 0.0141 min(-1), in the OTC concentration from 40 to 10 mg/L. OTC photolysis was highly pH-dependent and strongly enhanced at a high pH value, with a k value of 0.0629 min(-1) at pH 9. Enhanced OTC photolysis has also been observed in the presence of nitrate and low concentration of dissolved organic matter. Upon irradiation for 240 min, only 13.5% reduction of TOC occured in spite of a rapid consumption of 90% of OTC. The byproducts from OTC photolysis have been analyzed using high-performance liquid chromatography electrospray ionization mass spectrometry (LC-ESI-MS), and the degradation pathway of OTC in the photo process was proposed. By employing luminescent bacterium to assess the adversity of the degradation compounds, an increased effect of toxicity occured in spite of the great consumption of OTC in the photoirradiation process. After irradiation for 240 min, the inhibition rate was 47%, significantly higher than the initial rate of 21% (p < 0.05), revealing a potentially higher adversity risk on the microorganism upon OTC photolysis.
169 citations
TL;DR: The results provide the first evidence for release of bound residues during alteration of the redox environment and indicate that sequential anoxic-oxic incubation approaches-considered effective in remediation of environments containing halogenated xenobiotics-do not completely remove Xenobiotics from environmental matrices.
Abstract: Tetrabromobisphenol A (TBBPA) is one of the most commonly used flame retardants and has become an environmental contaminant worldwide We studied the fate of (14)C-labeled TBBPA in soil under static anoxic (195 days) and sequential anoxic (125 days)-oxic (70 days) conditions During anoxic incubation, TBBPA dissipated with a half-life of 36 days, yielding four debromination metabolites: bisphenol A (BPA) and mono-, di-, and tribrominated BPA At the end of anoxic incubation, all four brominated BPAs completely disappeared, leaving BPA (54% of initial TBBPA) as the sole detectable organic metabolite TBBPA dissipation was accompanied by trace mineralization (<13%) and substantial bound-residue formation (35%), probably owing to chemical binding to soil organic matter Subsequent oxic incubation was effective in degrading accumulated BPA (half-life 11 days) through mineralization (6%) and bound-residue formation (62%) However, 42% of the anoxically formed bound residues was released as TBBPA and lower brominated BPAs, which were then persistent during oxic incubation Our results provide the first evidence for release of bound residues during alteration of the redox environment and indicate that sequential anoxic-oxic incubation approaches-considered effective in remediation of environments containing halogenated xenobiotics-do not completely remove xenobiotics from environmental matrices
123 citations
TL;DR: The data indicate that abiotic hydrolysis and direct photolysis were the primary processes for elimination of the cephalosporins in the surface water of the lake, whereas biodegradation was responsible for the elimination ofThe cefepime and cefradine in the sediment.
114 citations
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TL;DR: The aim of the present paper is to critically review the fate and removal of various antibiotics in wastewater treatment, focusing on different processes (i.e. biological processes, advanced treatment technologies and disinfection) in view of the current concerns related to the induction of toxic effects in aquatic and terrestrial organisms.
1,516 citations
TL;DR: An extensive review of existing data in the form of tables, encompassing many therapeutic classes is presented and the different contamination sources as well as fate and both acute and chronic effects on non-target organisms are reviewed.
1,281 citations
TL;DR: It was found that ozonation, Fenton/photo-Fenton and semiconductor photocatalysis were the most tested methodologies and combined processes seem to be the best solution for the treatment of effluents containing antibiotics, especially those using renewable energy and by-products materials.
1,219 citations
TL;DR: There is still no universal accepted quantification and qualification tools of microplastics in fresh waters, and more work is anticipated to obtain accurate information on microplastic in freshwater, which can then be used for the better assessment of the environmental risk.
1,121 citations
TL;DR: The most representative pharmaceutical families found in water were described and related water pollution issues were analyzed and the performances of different water treatment systems in the removal of pharmaceuticals were summarized.
1,050 citations