Preparation of bead-type NiOx(OH)y catalyst for hypochlorite conversion and reactive brilliant red K-2BP degradation

Publication date: Available online 15 November 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): Wenying Xu, Haoyang GaoAbstractIn order to develop a low-cost NaClO/NiOx(OH)y process instead of Fenton method for treating refractory wastewater, a convenient bead-type hypochlorite conversion NiOx(OH)y catalyst was prepared by simply impregnating Ni-precursor over alumina and then oxidizing with persulfate (PS) in strong alkali solution. The influence of catalyst preparation conditions on the synthesis of NiOx(OH)y was studied. A series of batch experiments were carried out to verify the effective conversion of NaClO and investigate the influence of different parameters. Orthogonal test showed that Ni2+ concentration had the greatest effect on the catalyst performance, while PS dosage had the least effect. The best combination of catalyst preparation parameters is impregnation of the γ-Al2O3 beads in 1.5 M Ni2+ solution followed by oxidation in a mixture of 5% PS and 1.94% NaOH. The best catalyst sample was characterized by XRD, SEM and FTIR. XPS tests showed that the oxygen content in the catalytic layer increased with the Ni2+ solution concentration, and the oxygen content in the catalytic layer with the best performance reached 90.22%. SBET of the samples is 283−292 m2 g-1; Ni(OH)2 accounted for ∼ 2/3 of the nickel content and NiOOH accounted for ∼1/3. The catalyst significantly improved COD and color removal rate of reactiv...
Source: Journal of Environmental Chemical Engineering - Category: Chemistry Source Type: research

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In conclusion, the prepared LAF-loaded membrane is a novel formulation for the treatment of chronic and long-term pain.Graphical abstract
Source: Materials Science and Engineering: C - Category: Materials Science Source Type: research
Publication date: Available online 9 December 2019Source: Journal of Membrane ScienceAuthor(s): Miao Tian, Yuan Liao, Rong WangAbstractIn recent years, novel superwetting membranes have gained popularity for oily wastewater treatments via synergy between surface chemistry and topography. However, the water fluxes of the superwetting membranes normally decrease rapidly due to pore clogging and surface fouling, especially when treating surfactant-stabilized oil-in-water emulsions. Herein, a facile strategy is proposed to develop a superwetting thin film nanofibrous composite (TFNC) membrane with remarkable antifouling and se...
Source: Journal of Membrane Science - Category: Materials Science Source Type: research
Publication date: March 2020Source: Biomedical Signal Processing and Control, Volume 57Author(s): Arti Anuragi, Dilip Singh Singh SisodiaAbstractElectroencephalogram (EEG) signals are well used to characterize the brain states and actions. In this paper, a novel empirical wavelet transform (EWT) based machine learning framework is proposed for the classification of alcoholic and normal subjects using EEG signals. In the framework, the adaptive filtering is used to extract Time–Frequency-domain features from Hilbert–Huang Transform (HHT). The boundary detection method is used for segmenting the Fourier spectrum ...
Source: Biomedical Signal Processing and Control - Category: Biomedical Science Source Type: research
Publication date: Available online 9 December 2019Source: Reactive and Functional PolymersAuthor(s): Jianshe Wang, Huiling Chen, Yingying Ma, Huijuan Bai, Benbing Shi, Chunli Hou, Jingtao Wang, Yifan LiAbstractPolymer functionalized nanoparticles have attracted burgeoning interests in designing and fabricating novel nanocomposite membranes for fast transport of ions or small molecules. Herein, imidazolium polymer coated graphene oxides (AImGOs), bearing different length of polymer brushes, are synthesized via ATRP technique, and thus a very high weight percentage of imidazolium polymer brushes on GO (up to 89.5%) is acquir...
Source: Reactive and Functional Polymers - Category: Chemistry Source Type: research
Publication date: Available online 9 December 2019Source: Journal of Electroanalytical ChemistryAuthor(s): Amaury F.B. Barbosa, Vinicius Del Colle, Nelson A. Galiote, Germano Tremiliosi-FilhoAbstractIn the present study, random superficial defects of the {110}-type were electrogenerated on an initially well-ordered Pt(111) single crystal electrode, by cycling the potential in the range from 0.05 to 1.30 V by 32 times in perchloric acid solution and in a scan rate of 0.05 V s−1, named as Pt(111)-32. After partial disordering of the electrode surface, it was modified by deposition of tin submonolayers in three di...
Source: Journal of Electroanalytical Chemistry - Category: Chemistry Source Type: research
This study showed that platinum exhibits better dispersion on alumina sites than silica sites. This can be due to a strong interaction between platinum and alumina, leading to a higher dispersion of platinum species. Furthermore, the addition of MC enhanced the Pt dispersion over the mullite, leading to an improvement in the catalytic performance.
Source: Brazilian Journal of Chemical Engineering - Category: Chemistry Source Type: research
ConclusionLow-dose aspirin or other NSAID use was not associated with reduced prostate cancer risk, neither overall nor according to anthropometric measures, smoking, or alcohol use. The variation according to outcome characteristics warrants further investigation.
Source: Cancer Causes and Control - Category: Cancer & Oncology Source Type: research
A new study suggests that even light alcohol consumption may increase overall cancer risk when compared to people who do not drink at all, increasing risk for various cancers by about 18 percent.
Source: Health News - UPI.com - Category: Consumer Health News Source Type: news
Jan 23, 2020. . Sponsored by Mid-Atlantic Association of Community Health Centers
Source: Rural events via the Rural Assistance Center - Category: Rural Health Source Type: events
There are many ways to treat a dry mouth at home, including using a humidifier, sucking on sugar-free lozenges, and trying alcohol-free mouthwash. Learn more.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: Dentistry Source Type: news
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