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Hur kan PFAS-ämnen avlägsnas i vattenverken? - Rapporter
These laccase-mediator systems have been shown to de-grade not only lignin but also several aromatic and aliphatic xenobiotics (29, 39). The participation of laccase in the pro-duction of reduced oxygen species, i.e., superoxide anion rad-ical (O 2), H 2O 2, and OH, has been demonstrated through the oxidation of lignin-derived Perfluorooctanoic acid (PFOA) (conjugate base perfluorooctanoate) — also known colloquially as C8 — is a perfluorinated carboxylic acid produced and used worldwide as an industrial surfactant in chemical processes and as a material feedstock.It is a product of health concern and subject to regulatory action and voluntary industrial phase-outs. – Extracellular systems to produce H 2O 2 (required for enzyme oxidation) • Lignin Peroxidase (LiP): degrades nonphenolic units up to 90%, uses veratryl alcohol as “mediator”, “real ligninase” => high E 0 (>1.4 V*) • Mn Peroxidase (MnP): generates Mn3+ as a diffusible oxidizer (chelated by … FRs pretreated with laccase or laccase-mediator The FRs were pretreated with laccases alone or with laccases in the presence of 1-hydroxybenzotriazole (HBT, Sigma Co., St. Louis, MO, USA) as a mediator. The pretreatment was carried out in a 500-mL conical flask in a shaking incubator operating at 150 revolutions per min (rpm) and 50 °C.
Luo Q., Yan X., Lu J., Huang Q., 2018, Perfluorooctanesulfonate degrades in a laccase-mediator system, Environmental Science and Technology, 52, 10617-10626. 22. Liang S., Lin H, Habteselassie M., Huang Q. 2018, Electrochemical inactivation of bacteria with a titanium sub-oxide reactive membrane, Water Research, 145, 172-180. 23. For example, it has been found that laccase was able to degrade its unfavorable substrate, e.g., herbicide isoproturon, perfluorooctanesulfonate, and perfluorooctanoic acid using 1-hydroxybenzotriazole (HBT) and soybean meal as mediators (Luo et al., 2018a, 2018b; Zeng et al., 2017), respectively. Qi Luo's 15 research works with 239 citations and 1,481 reads, including: Perfluorooctanesulfonate Degrades in a Laccase-Mediator System Qi Luo's research while affiliated with University of Perfluorooctanesulfonate Degrades in a Laccase-Mediator System. Environmental Science & Technology, 52 (18):10617-10626.
Hur kan PFAS-ämnen avlägsnas i vattenverken? - Rapporter
LMS laccase-mediator system Potential of C. rigida and its laccases in applied processes As mentioned before, C. rigida and its laccases are currently being studied in terms of their ability to degrade and/or detoxify a wide array of compounds such as industrial by-products and/or agricultural wastes. Plant biomass is an abundant renewable resource on Earth.
Hur kan PFAS-ämnen avlägsnas i vattenverken? - Rapporter
by Luo, Qi, Evaluating perfluorooctanesulfonate oxidation in permanganate systems. By Saerom Park, Linda S Lee, Ian Ross, and Jake Hurst Environ. Sci. and Poll.
Environmental Science & Technology, 52(18):10617-10626. Zhang, D., Q. Luo, B. Gao, S.Y. Chiang, D. Woodward, and Q. Huang. 2016. 2014-01-08 · The purpose of this work is to study the ability of an industrially available laccase-mediator system to modify and remove lignin during pretreatment of wood (Eucalyptus globulus) feedstock, thus improving saccharification, and to analyze the chemical modifications produced in the whole material and especially in the recalcitrant lignin moiety. Rencoret, J., Pereira, A., del Río, J.C. et al. Laccase-Mediator Pretreatment of Wheat Straw Degrades Lignin and Improves Saccharification. Bioenerg.
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sku: M36164-88PU · Celprogen Media. sku: M36010- 29 mars 2021 Victime du Médiator, il réagit à l'annonce de la condamnation ce lundi 29 mars des laboratoires Servier pour tromperie agravée, "homicide et Microbial toxicity and biodegradability of perfluorooctane sulfonate (PFOS) and shorter PMID: 23245309;Abstract: Performance of a combined system up-flow Blue 71 (DB71) were observed when no external redox mediator was provided . Dec 14, 2020 domestic well communities and community water systems” Reclamation of degraded, arid soils disturbed by mining in the Southwest is a are AD mediators through gene-environment interactions.
Background Biofuel production from lignocellulosic material is hampered by biomass recalcitrance towards enzymatic hydrolysis due to the compact architecture of the plant cell wall and the presence of lignin.
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Hur kan PFAS-ämnen avlägsnas i vattenverken? - Rapporter
Jinyuan Hu, Kun Lu, Shipeng Dong, Qingguo Huang, Liang Mao. Inactivation of Laccase by the Attack of As (III) Reaction in Water. A double-layer permeable reactive barrier (DL-PRB) system was originally proposed for the study for inducing in situ ECHOR reactions. The DL-PRB system was comprised of an oxidant releasing material layer followed by a layer of quartz sands immobilized with humification enzymes. Pretreatment with laccase and a phenolic mediator degrades lignin and enhances saccharification of Eucalyptus feedstock.
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Hur kan PFAS-ämnen avlägsnas i vattenverken? - Rapporter
Plant cell-wall deconstruction, however, remains an inefficient process, mainly due to the recalcitrant nature of the lignin and cellulosic components, that requires chemical pretreatment methods prior to degradation. This study aims to overcome this barrier by combining two paradigms into a single system Decolourization and detoxification of textile industry wastewater by the laccase-mediator system. J. Hazard. Mater.