Hydrophobic flocculation and Box–Wilson experimental design for beneficiating fine coal

Ucbeyiay, H.

doi:10.1016/j.fuproc.2012.09.020

Cited by 18 publications

(3 citation statements)

References 25 publications

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“…Response surface methodology (RSM) is introduced as an alternative method to traditional optimization, allowing for the optimization of multiple parameters simultaneously. RSM offers several options for experimental design, including Doehlert design, 25 Box−Behnken design, 26 and central composite design (CCD). 27 This statistical analysis provides several advantages, including the ability to optimize one or more parameters, while considering the interaction between In this study, optimization of IC 50 (half-maximal inhibition) and A/D (top and bottom values from the 4PL graph) responses was performed using the Box−Behnken design.…”

Section: Optimization Of Responses Using Response Surface Methodologymentioning

confidence: 99%

Development of Methyl Ester Antibody-Based Competitive Indirect ELISA for Quantitative Detection of Mitragynine in Human Urine

Mustafa,

Sukor,

Mohd Nor

et al. 2023

ACS Omega

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Mitragynine is the main psychoactive compound of Mitragyna speciosa Korth. (kratom). This alkaloid could render psychotropic effects and is often misused as a substitute for commercial drugs. Nowadays, the increasing popularity of kratom has led to the development of a rapid and effective detection method. The detection of mitragynine in a biological sample such as urine requires a highly sensitive and specific method due to the complex nature of mitragynine in urine. Enzyme-linked immunosorbent assay (ELISA) is well known as a rapid screening method for biological samples. In this study, a competitive indirect ELISA was successfully developed using MG-22-OCH3 IgG as a detection antibody for mitragynine in human urine. The mitragynine immunoassay showed a limit of detection and a limit of quantification of 0.412 and 1.25 μg/mL, respectively. The measurement range was between 0.01 and 100.0 μg/mL, with a minimal inhibition (IC50) value of 0.152 μg/mL. The developed ELISA was validated using a gold method such as high-performance liquid chromatography–mass spectrometry (HPLC-MS). The percentage of recovery and the coefficient of variation (CV) for the ELISA and LCMS/MS analyses were 84.0–95.70%, 99.20–112.0%, 7.69–9.78%, and 2.86–6.62%, respectively. This indicates that the developed ELISA is a reliable method that can be used as a rapid approach for quantifying mitragynine content in biological samples.

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Section: Optimization Of Responses Using Response Surface Methodologymentioning

confidence: 99%

Development of Methyl Ester Antibody-Based Competitive Indirect ELISA for Quantitative Detection of Mitragynine in Human Urine

Mustafa,

Sukor,

Mohd Nor

et al. 2023

ACS Omega

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“…As known from the literature, different chemicals can be used for the flocculation of coal tailings. Some researchers studied the effect of only non-ionic chemicals such as diesel oil (Ucbeyiay, 2013), kerosene, and fuel oil (Song and Valdivieso, 1998). used dual-flocculant systems in the dewatering of coal tailings.…”

Section: Introductionmentioning

confidence: 99%

Investigation of flocculation properties and floc structure of coal processing plant tailings in the presence of monovalent and divalent ions

Güngören

Kurşun

Özdemir

2020

Physicochem. Probl. Miner. Process.

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Low-rank coals are generally processed with wet methods including washing, flotation, etc. Fine-sized tailings of these processes are discharged to tailing ponds with a significant amount of associated water which contains a high amount of dissolved ions. These tailings should be dewatered employing coagulation/flocculation in terms of technological and environmental aspects. In this study, the coagulation/flocculation behavior of coal processing plant tailings obtained from Manisa, Turkey was investigated in the presence of monovalent (Na + , K +) and divalent (Mg 2+ , Ca 2+) ions and an anionic flocculant (SPP-600). First, the coagulation properties of coal tailings were determined. Then, the flocculation experiments were carried out, and the turbidity values of the suspensions were measured. Moreover, the sizes of the flocs were determined using a laser diffraction particle size analyzer to analyze the strength of the flocs. The results of the coagulation experiments showed that while divalent ions were more effective at 10-1 mol/dm 3 , higher settling rate and lower turbidity values were obtained in the presence of monovalent ions at 1 mol/dm 3 concentration. The optimum flocculant dosage was obtained as 150 g/Mg from the flocculation experiments. The floc size and strength measurements indicated that the larger flocs were obtained with Na + than Ca 2+ in the presence of the flocculant. The strongest flocs were obtained at 10-1 mol/dm 3 Ca 2+ + 150 g/Mg flocculant. It can be concluded from this study that the coagulation followed by the flocculation method can be employed to obtain fast flocculation behavior and low turbidity for the dewatering of coal tailings.

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“…So flotation are being attentioned more and more, shows a booming trend, and shows in the following main aspects: (1) Simple process, efficient become a modern design trend of coal preparation, direct flotation process is being attentioned more and more, and to achieve direct flotation, the flotation machine with appropriate capacity must be selected. Flotator with largescale processing capacity is a modern trend of coal preparation [1]. 2The research of dense medium cyclone is deepening, the minimum size of flotation coal is decreasing, flotation coal size is getting smaller and smaller, it requires the flotation equipment to strengthen the separation of fine coal.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction and Practice of Coarse Slime System of Chengjiao Coal Preparation Plant

Ren¹,

Yang²

2015

Proceedings of the AASRI International Conference on Industrial Electronics and Applications (2015)

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In this paper, problems in coal handling system and practice of Chengjiao coal preparation plant is tested and analyzed in detail, and I have put forward solutions for problems in coal handling system. The best production program of Chengjiao coal preparation plant was chose through program comparing. After the implementation of the program, the annual clean coal production can be increased by 162,400 tons, and economic benefits are significant.

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Hydrophobic flocculation and Box–Wilson experimental design for beneficiating fine coal

Cited by 18 publications

References 25 publications

Development of Methyl Ester Antibody-Based Competitive Indirect ELISA for Quantitative Detection of Mitragynine in Human Urine

Development of Methyl Ester Antibody-Based Competitive Indirect ELISA for Quantitative Detection of Mitragynine in Human Urine

Investigation of flocculation properties and floc structure of coal processing plant tailings in the presence of monovalent and divalent ions

Reconstruction and Practice of Coarse Slime System of Chengjiao Coal Preparation Plant

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