Catalytic ozonation for the removal of reactive black 5 (RB-5) dye using zeolites modified with CuMn2O4/gC3N4 in a synergic electro flocculation-catalytic ozonation process

Abstract This study aims to investigate the decolourization efficiency of reactive black 5 (RB-5) dye by using CuMn2O4/gC3N4 coated zeolites (zeolite 4A) for the first time in a hybrid electro-flocculation-catalytic ozonation process. A comparison between various treatment options such as electro-flocculation, electro-flocculation in the presence of a catalyst, and catalytic ozonation in combination with electro-flocculation was explored. Moreover, the effect of different factors such as pH, time, catalyst dose, ozone dose, radical scavenger, and voltage has been studied in each treatment option mentioned earlier. The results indicated that the best treatment option was found to be catalytic ozonation in combination with electro-flocculation with removal efficiency (RE) of 90.31% at pH 10 after 30 min of the treatment process. The hydroxyl radical scavenger effect indicated that the synergistic catalytic process follows a radical mechanism. It is therefore concluded that CuMn2O4/gC3N4–zeolite catalysts in synergic electro-flocculation-catalytic ozonation process may be effectively used for the treatment of textile wastewaters.

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Ozonation catalyzed by iron silicate for the degradation of o-chloronitrobenzene in drinking water

Water Science & Technology Water Supply ◽

10.2166/ws.2011.096 ◽

2012 ◽

Vol 12 (1) ◽

pp. 31-37 ◽

Cited By ~ 2

Author(s):

Y. Liu ◽

Z. Chen ◽

L. Yang ◽

Y. Han ◽

J. Shen ◽

...

Keyword(s):

Active Species ◽

Catalytic Ozonation ◽

Iron Silicate ◽

Radical Scavenger ◽

Hydroxyl Groups ◽

Surface Hydroxyl ◽

Hydroxyl Radical Scavenger ◽

Silicate Surface ◽

Ozonation Process ◽

Hydroxylated Surface

This paper aimed to reveal the effectiveness and the mechanism of catalytic ozonation in the presence of iron silicate for the degradation of o-chloronitrobenzene (oCNB). Experimental results show that catalytic ozonation in the presence of iron silicate could substantially enhance oCNB removal efficiency compared with ozonation alone, and that the adsorption of oCNB on the iron silicate surface had no significant effect on the degradation of oCNB. The results of a hydroxyl radical scavenger experiment using spin-trapping/EPR technology to identify hydroxyl radicals (•OH) confirm that •OH were the main active species in the removal of oCNB during the ozonation process catalyzed by iron silicate. The catalytic activity of the iron silicate was related to a highly hydroxylated surface. It was confirmed that the surface hydroxyl groups on the iron silicate were the reaction sites between ozone and oCNB.

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Degradation of p-Chloronitrobenzene in Aqueous Solution by Iron Silicate Catalytic Ozonation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.2162 ◽

2014 ◽

Vol 955-959 ◽

pp. 2162-2168 ◽

Cited By ~ 1

Author(s):

Yue Liu ◽

Lei Liu ◽

Wei Jin Gong

Keyword(s):

Aqueous Solution ◽

Catalytic Activity ◽

Catalytic Ozonation ◽

Iron Silicate ◽

Radical Scavenger ◽

Efficient Catalyst ◽

Green Catalyst ◽

Hydroxyl Radical Scavenger ◽

Radical Type ◽

Ozonation Process

Iron silicate, a stable and efficient catalyst prepared in the laboratory has been successfully used as a catalyst combined with ozonation in the degradation of p-Chloronitrobenzene (pCNB). The catalytic ozonation removal effectiveness of pCNB was investigated under various physicochemical conditions. Both the adsorption and the single ozonation were not effective for the degradation of pCNB, but the presence of iron silicate in ozonation process could substantially enhance the pCNB removal efficiency. The hydroxyl radical scavenger experiment confirmed that iron silicate catalytic ozonation followed a radical-type mechanism. The increasing of both the iron silicate dosage and the ozone dosage could enhance the removal effectiveness of pCNB. The iron silicate catalyst could be recycled easily without decreasing any ozone catalytic activity after four successive reuses. It is concluded that the iron silicate was an efficient green catalyst for pCNB degradation in drinking water.

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Manganese Silicate Catalyzed Ozonation of m-Chloronitrobenzene in Drinking Water

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1159 ◽

2011 ◽

Vol 239-242 ◽

pp. 1159-1164

Author(s):

Yue Liu ◽

Zhong Lin Chen ◽

Yu Liu ◽

Ying Han ◽

He Wang ◽

...

Keyword(s):

Drinking Water ◽

Catalytic Activity ◽

Catalytic Ozonation ◽

Radical Scavenger ◽

Efficient Catalyst ◽

Green Catalyst ◽

Manganese Silicate ◽

Hydroxyl Radical Scavenger ◽

Radical Type ◽

Ozonation Process

Manganese silicate, a stable and efficient catalyst prepared in the laboratory has been successfully used as a catalyst combined with ozonation in the degradation of m-Chloronitrobenzene (mCNB). The catalytic ozonation removal effectiveness of mCNB was investigated under various physicochemical conditions. Both the adsorption and the single ozonation were not effective for the degradation of mCNB, but the presence of manganese silicate in ozonation process could substantially enhance the mCNB removal efficiency. The hydroxyl radical scavenger experiment confirmed that manganese silicate catalytic ozonation followed a radical - type mechanism. The increasing of the manganese silicate dosage could enhance the removal effectiveness of mCNB. The manganese silicate catalyst could be recycled easily without decreasing any ozone catalytic activity after four successive reuses. It is concluded that the manganese silicate was an efficient green catalyst for mCNB degradation in drinking water.

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Views about sensory modulation from people with schizophrenia and treating staff: A multisite qualitative study

British Journal of Occupational Therapy ◽

10.1177/0308022620988470 ◽

2021 ◽

pp. 030802262098847

Author(s):

Tawanda Machingura ◽

Chris Lloyd ◽

Karen Murphy ◽

Sarah Goulder ◽

David Shum ◽

...

Keyword(s):

Content Analysis ◽

Treatment Option ◽

Perceived Risk ◽

Quantitative Methods ◽

Qualitative Content Analysis ◽

Treatment Options ◽

Occupational Therapists ◽

Sensory Modulation ◽

Structured Interviews ◽

Effective Training

Introduction Current non-pharmacological treatment options for people with schizophrenia are limited. There is, however, emerging evidence that sensory modulation can be beneficial for this population. This study aimed to gain insight into sensory modulation from the user’s and the treating staff’s perspectives. Method A qualitative content analysis design was used. Transcripts from occupational therapists ( n=11) and patients with schizophrenia ( n=13) derived from in-depth semi-structured interviews were analysed for themes using content analysis. Results Five themes emerged from this study: Service user education on the sensory approach is the key; A variety of tools should be tried; Sensory modulation provides a valued treatment option; There are challenges of managing perceived risk at an organisational level; and There is a shortage of accessible and effective training. Conclusion People with schizophrenia and treating staff had congruent perceptions regarding the use of sensory modulation as a treatment option. The findings suggest that sensory modulation can be a valued addition to treatment options for people with schizophrenia. We suggest further research on sensory modulation intervention effectiveness using quantitative methods so these results can be further explored.

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Food waste treatment option selection through spherical fuzzy AHP

Journal of Intelligent & Fuzzy Systems ◽

10.3233/jifs-219178 ◽

2021 ◽

pp. 1-11

Author(s):

Aysu Melis Buyuk ◽

Gul T. Temur

Keyword(s):

Treatment Option ◽

Food Waste ◽

Waste Treatment ◽

Fuzzy Ahp ◽

Treatment Options ◽

Analytic Hierarchy ◽

Food Treatment ◽

Novel Approach ◽

Proposed Model ◽

Option Selection

In line with the increase in consciousness on sustainability in today’s global world, great emphasis has been attached to food waste management. Food waste is a complex issue to manage due to uncertainties on quality, quantity, location, and time of wastes, and it involves different decisions at many stages from seed to post-consumption. These ambiguities re-quire that some decisions should be handled in a linguistic and ambiguous environment. That forces researchers to benefit from fuzzy sets mostly utilized to deal with subjectivity that causes uncertainty. In this study, as a novel approach, the spherical fuzzy analytic hierarchy process (SFAHP) was used to select the best food treatment option. In the model, four main criteria (infrastructural, governmental, economic, and environmental) and their thirteen sub-criteria are considered. A real case is conducted to show how the proposed model can be used to assess four food waste treatment options (composting, anaerobic digestion, landfilling, and incineration). Also, a sensitivity analysis is generated to check whether the evaluations on the main criteria can change the results or not. The proposed model aims to create a subsidiary tool for decision makers in relevant companies and institutions.

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Potential of ammonium chloride-activated carbon for decomposition of penicillin G by catalytic ozonation process (COP)

International Journal of Environmental Science and Technology ◽

10.1007/s13762-021-03180-x ◽

2021 ◽

Author(s):

R. Hekmatshoar ◽

S. Khoramnejadian ◽

A. Alahabadi ◽

M. H. Saghi

Keyword(s):

Activated Carbon ◽

Ammonium Chloride ◽

Catalytic Ozonation ◽

Penicillin G ◽

Ozonation Process

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COT-13 Current situation and problems of cancer genomic profiling test in Kyoto University Hospital

Neuro-Oncology Advances ◽

10.1093/noajnl/vdaa143.099 ◽

2020 ◽

Vol 2 (Supplement_3) ◽

pp. ii22-ii22

Author(s):

Yoshiki Arakawa ◽

Junko Suga ◽

Yukinori Terada ◽

Kohei Nakajima ◽

Masahiro Tanji ◽

...

Keyword(s):

Treatment Options ◽

Insurance Coverage ◽

Germline Mutations ◽

University Hospital ◽

Genomic Profiling ◽

Test Results ◽

Final Test ◽

First Time ◽

To Receive ◽

Secondary Finding

Abstract Objective: Kyoto University Hospital has introduced the cancer genomic profiling tests, Oncoprime in 2015, Guardant360 in 2018, which are not under insurance coverage, FoundationOne CDx(F1CDx) and OncoGuide NCC Oncopanel system(NCC OP) in 2019, which received approval for insurance coverage for the first time in Japan. We investigated the results of cancer genomic profiling test under insurance coverage in our hospital. Methods: A special facility for the cancer genomic profiling tests was produced. To perform the cancer genomic profiling test, an outpatient must visit the facility three times (learning, ordering of the test, and getting the results). The expert panels decide the final test results and treatment options with the all information of the patients. Results: From November 2019 to March 2020, 51 and 9 patients were tested with F1CDx and NCC OP, respectively. 16 patients (31%) of F1CDX and 2 patients (22%) of NCC OP got treatment recommendations from the expert panels. However, only 5 patients (9.8%) of F1CDX and 1 patient (11%) of NCC OP received the treatments. The secondary finding suspecting germline mutations was found in 8 patients of F1CDX. Conclusion: After the approval the cancer genomic profiling tests with insurance coverage in Japan, it becomes easy for the patients to perform the test and get the genetic information of the tumor. However, it remains not easy to receive the recommended drugs because of several limitations of their usages.

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The right to choose treatment-without-treatment: respecting civil rights or an unprecedented manifestation of ‘reverse stigma’?

Acta Neuropsychiatrica ◽

10.1017/neu.2018.24 ◽

2018 ◽

Vol 31 (1) ◽

pp. 56-58

Author(s):

Konstantinos N Fountoulakis ◽

Kyriakos Souliotis

Keyword(s):

Health Care ◽

Civil Rights ◽

Social Services ◽

Treatment Options ◽

Health Minister ◽

Proper Treatment ◽

Free Treatment ◽

Efficacious Treatment ◽

The Right ◽

First Time

AbstractRecently the Norwegian Health Minister ordered the creation of medication-free treatment wards as a result of the lobbying by patients’ groups and activists. The idea behind this is that patients should have the right to choose their treatment, but for the first time, with this arrangement, the user/patient does not choose between treatment options; he literally determines by himself what efficacious treatment is. In our opinion this is another step towards a ‘reverse stigma’ which denies patients the right to be considered as such and eventually kicks them out of the health care system, deprives them of the right for proper treatment and care and instead puts them at the jurisdiction of the much cheaper and ineffective social services.

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