Hongying Xia

Kunming University of Science and Technology

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Libo Zhang

Kunming University of Science and Technology

Shixing Wang

Kunming University of Science and Technology

Jinhui Peng

Kunming University of Science and Technology

Tu Hu

Kunming University of Science and Technology

Zeying Wang

Kunming University of Science and Technology

Shiwei Li

Huazhong Agricultural University

Song Cheng

Hohai University

Likang Fu

Kunming University of Science and Technology

Qi Zhang

Xi'an Shiyou University

Zhen Zhong

Kunming University of Science and Technology

Cooperative Institutions

Kunming University of Science and Technology

Yunnan Metallurgical Group (China)

Henan Polytechnic University

Chinese Academy of Sciences

State Administration of Work Safety

Harbin Institute of Technology

University of Chinese Academy of Sciences

Zhengzhou University

Wuhan University

State Ethnic Affairs Commission

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Optimisation and numerical simulation of ultrasonic reactor in hydrometallurgical process

Canadian Metallurgical Quarterly (2024)

Zeying Wang Guo Lin Tu Hu Shixing Wang Shiwei Li

In this paper, COMSOL Multiphysics software is used to carry out simulations to visualise the distribution of the acoustic field and sound pressure in the reaction cavity for different ultrasonic frequencies, powers, reaction cavity shapes, ultrasonic horn diameters and ultrasonic horn action depths. The results indicate the ultrasonic frequency affects the uniformity of the acoustic field distribution, and the ultrasonic power affects the magnitude of the sonic pressure. Taking into account that the sonic pressure is not less than the cavitation threshold, the sound field is evenly distributed, and it is energy-saving and environment-friendly. The optimal simulation conditions are obtained. In a 500 mL cylindrical reaction chamber, the ultrasonic frequency and power are 25 kHz and 130 W, respectively. The diameter of the ultrasonic horn is 34 mm, and the depth of action is 30 mm. Under these conditions, the maximum sound pressure reaches 1.08 × 106 Pa.

10.1080/00084433.2024.2395598

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Citations (2)

Efficient and selective removal of Pb(II) from aqueous solution by modification crofton weed: Experiment and density functional theory calculation

Journal of Cleaner Production (2020)

Song Cheng Baolin Xing Changliang Shi Yanhe Nie Hongying Xia

10.1016/j.jclepro.2020.124407

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Citations (101)

Constructing Advanced Oxidation Field in Ultrasonic toward Efficient Recovery of Palladium from Spent Catalysts

ACS Sustainable Chemistry & Engineering (2024)

Xinrui Yang Shixing Wang Yuefeng Chen Likang Fu Hongliang Liu

The palladium content of spent catalysts is significantly higher than that found in most natural ores, making spent catalysts important raw materials for palladium recovery. However, the palladium in the waste catalyst is encapsulated by insoluble Al2O3, and the oxidation potential of palladium is high, which makes the palladium recovery efficiency of conventional methods low. To solve this problem, this paper proposes ultrasound-enhanced persulfate oxidation to recycle palladium from waste catalysts. The leaching percentage of palladium under an ultrasound-enhanced persulfate and hydrochloric acid system is up to 97%. Kinetic studies showed that the activation energy of the reaction under ultrasonic conditions was reduced by 32.41 kJ/mol compared with the conventional conditions. Mineralogical analyses of the leaching slag are made to examine the mechanism of the ultrasound-enhanced leaching of palladium from persulfate. Measurements of the contact angle and surface energy of the solids were shown to indicate that the introduction of the ultrasonic external field accelerates the reaction rate by increasing the hydrophilicity of the solids. Electron paramagnetic resonance was introduced to probe the effect of ultrasound on the highly oxidized free radicals produced by persulfate. This work demonstrates that ultrasound-enhanced persulfate is an efficient method for recycling palladium from waste catalysts.

Persulfate

Hydrochloric acid

10.1021/acssuschemeng.4c08215

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Ultrasound and microwave-assisted synthesis of copper-activated carbon and application to organic dyes removal

Powder Technology (2018)

Xin Jiang Hongying Xia Libo Zhang Jinhui Peng Song Cheng

Methylene blue

Methyl orange

Organic compound

10.1016/j.powtec.2018.07.089

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Citations (36)

Kinetics and Equilibrium Studies for the Removal of Tannin Acid from Aqueous Solutions by Regenerated Activated Carbon

Aiyuan Ma Libo Zhang Jinhui Peng Hongying Xia Chenyu Sun

This chapter contains sections titled: Introduction Materials and Methods Results and Discussion Conclusions Acknowledgements

Tannin

Carbon fibers

10.1002/9781118889664.ch68

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Roles and influencing mechanisms of guar gum and polyethylene glycol in copper electrodeposition

Canadian Metallurgical Quarterly (2024)

Zhen Zhong Guo Lin Tu Hu Shixing Wang Shiwei Li

In this paper, the effects of the organics guar gum and polyethylene glycol (PEG) additives on Cu electrodeposition cell voltage, energy consumption and surface morphology were evaluated. Furthermore, the influences of guar gum and PEG on the kinetics of Cu electrodeposition were investigated using electrochemical tests such as cyclic voltammetry (CV), linear sweep voltammetry (LSV) and Tafel linear fitting. The results indicated that adding 0.5 mg/L guar gum promoted the Cu electrodeposition. While indicating the lowest overpotential (10 and 100 mA cm−2 were −462 and −561 mV, respectively) and smaller Tafel slope of 50.37 mV dec−1. However, higher concentrations of guar gum and PEG increased cell voltage and energy consumption, with 900 mg/L PEG leading to a 61 kWh energy increase. Elevated organic levels in the electrolyte raised overpotential, inhibiting Cu deposition and causing surface roughness on Cu sheets.

Guar gum

10.1080/00084433.2024.2427456

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A Review of External Field-Enhanced Metal Electrodeposition: Mechanism and Applications

JOM (2024)

Zhen Zhong Lin Guo Hu Tu Zeying Wang Shixing Wang

10.1007/s11837-024-06968-7

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Citations (1)

Adsorption of Eosin Y using an environmentally friendly adsorbent prepared by microwave heating

Desalination and Water Treatment (2018)

Jianhua Shu Hongying Xia Libo Zhang Jinhui Peng Song Cheng

Eosin Y is a kind of organic dye which is difficult to degrade, and it has a harmful effect on water quality.In this work, the removal efficiency of Eosin Y from aqueous solutions by the spent activated carbon (AC) which is regenerated via microwave heating has been systematically investigated.The structure and properties of spent AC and regenerated AC were characterized by N 2 adsorption isotherms, scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy and gas chromatography-mass spectrometry.The related dominant factors including contact time, pH, temperature, initial concentration and ionic strength were considered, and these effects on the removal of Eosin Y were studied in batch experiments.Additionally, based on the best fit rule, kinetic and isotherm studies indicated that the experimental data were in line with the theoretical values predicted by the pseudo-second-order model and the Langmuir adsorption isotherm model, respectively.The maximum adsorption capacity of Eosin Y was 344.83 mg/g, indicating high efficiency for Eosin Y adsorption.Thermodynamic parameters revealed the endothermic nature of the adsorption process.All the present studies showed that using regenerated AC to remove Eosin Y from wastewater is an environmentally friendly way, and the comprehensive utilization of waste resources is also realized.

Environmentally Friendly

Eosin Y

Microwave heating

Eosin

10.5004/dwt.2018.22036

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Lead and cadmium clean removal from wastewater by sustainable biochar derived from poplar saw dust

Journal of Cleaner Production (2021)

Song Cheng Yongzhi Liu Baolin Xing Xiaojing Qin Chuangxiang Zhang

Langmuir adsorption model

Industrial wastewater treatment

10.1016/j.jclepro.2021.128074

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Citations (179)

Microwave-assisted preparation of manganese dioxide modified activated carbon for adsorption of lead ions

Water Science & Technology (2020)

Heng Yan Wenhai Hu Song Cheng Hongying Xia Quan Chen

Abstract In this study, manganese dioxide was evenly distributed on the surface of activated carbon (AC), and the porous structure of AC and the surface functional groups of manganese dioxide were used to adsorb the heavy metal ion Pb(II). The advantages of microwave heating are fast heating and high selectivity. The mole ratio control of the AC and MnO2 in 1:0.1, microwave heating to 800 °C, heat preservation for 30 min. The maximum adsorption capacity of the MnO2-AC prepared by this method on Pb(II) can reach 664 mg/L at pH = 6. It can be observed by SEM that manganese dioxide particles are dispersed evenly on the surface and pore diameter of AC, and there is almost no agglomeration. The specific surface area was 752.8 m2/g, and the micropore area was 483.9 m2/g. The adsorption mechanism was explored through adsorption isotherm, adsorption kinetics, FTIR, XRD, XPS. It is speculated that the adsorption mechanism includes electrostatic interaction and specific adsorption, indicating that lead ions enter into the void of manganese dioxide and form spherical complexes. The results showed that the adsorption behavior of Pb(II) by MnO2-AC was consistent with the Langmuir adsorption model, the quasi-second-order kinetic model, and the particle internal diffusion model.

Specific surface area

Langmuir adsorption model

10.2166/wst.2020.350

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Citations (9)