Investigation of zinc powder modified by ultrasonic impregnation of rare earth lanthanum

Zhou, Liqun; Zhang, Hui; Li, Weiping; Liu, Huicong

doi:10.1016/j.apsusc.2007.06.008

Cited by 15 publications

(6 citation statements)

References 21 publications

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“…In ultrasonic impregnation process, ultrasound intensified extremely the stir of FeSO 4 solution, triggered drastically intermolecular collision in the liquid-solid system and brought about the cavitation effect [26]. All these facts strengthen the impregnation of iron ions into the carrier.…”

Section: Characteristics Of the Adsorbentmentioning

confidence: 98%

An effective adsorbent developed from municipal solid waste and coal co-combustion ash for As(V) removal from aqueous solution

Fan

Zhang

Yong³

2008

Journal of Hazardous Materials

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a b s t r a c tA new adsorbent was developed from waste ash resulting from municipal solid waste and coal cocombustion power plant. The ash was firstly subjected to hydrothermal treatment for zeolite synthesis, and then modified with iron(II) ions by agitation (ISZ) or ultrasonic (UISZ) treatment. The effect of operating factors such as pH, contact time, initial As(V) concentration and adsorbent dosage was investigated and the optimum operating conditions were established. The adsorption capacity for As(V) onto UISZ and ISZ were 13.04 and 5.37 mg g −1 , respectively. The adsorption isotherm data could be well described by Langmuir isotherm model. The optimum initial pH values for As(V) removal were 2.5 and 2.5-10.0 by ISZ and UISZ, respectively. The results indicated that ultrasound treatment scattered the particles of the adsorbent uniformly, which was in favor of impregnating iron ions into pores. Leaching of hazardous elements from the used adsorbents was very low. Accordingly, it is believed that the adsorbents developed in this study are environmentally acceptable and industrially applicable for utilization in arsenic-containing wastewater treatment.

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Section: Characteristics Of the Adsorbentmentioning

confidence: 98%

An effective adsorbent developed from municipal solid waste and coal co-combustion ash for As(V) removal from aqueous solution

Fan

Zhang

Yong³

2008

Journal of Hazardous Materials

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“…Owing to the unique behaviors of ultrasound with ultrasonic agitation [16] and acoustic cavitation [17], intermolecular collision is drastically triggered, mass transfer rate is significantly enhanced as well as electrochemical reactions are strongly activated in the liquid-solid system. Recently, we have successfully modified zinc powder with the formation of lanthanum compounds on it by the combination of ultrasound with immersion process that has been verified to be a novel and promising approach for chemical modification of electrode materials [18].…”

Section: Introductionmentioning

confidence: 99%

Great improvement over electrochemical performance of zinc electrodes from sonochemical growth of cerium conversion films on zinc powder

Zhou

Zhang

et al. 2009

Journal of Alloys and Compounds

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“…Meanwhile, different corrosion inhibitors were also used to modify zinc powder. For example, Zhu et al modified zinc powder with rare earth lanthanum to study the electrochemical behavior of modified zinc powder and improve the corrosion resistance of zinc-rich paints [15]. Bastos and others use cerium nitrate-modified zinc powder to improve the weldability of the coating and corrosion resistance of the primer [16].…”

Section: Introductionmentioning

confidence: 99%

Effects of Surface Modification and Heat Treatment on the Storage and Application Properties of Waterborne Zinc-Based Paint

Liu

Zhou

et al. 2023

Coatings

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The high activity of metallic zinc particles with water, and consequently the short pot lift of a mixed waterborne organic zinc-rich paint, are the most well-known problem for their application. In this study, zinc powders were modified by silane-crosslinked potassium silicate and the paint’s pot life was prolonged. Electron microscopy analysis showed that the zinc spheres in the waterborne paint were encapsulated by the shell consisted of silane-crosslinked potassium silicate and resin. The modification allowed the paint stay fluid after storage for 36 h. Nevertheless, the thickened shell was found to deteriorate the cathodic protection provided by the zinc particles. As a repair strategy, the post-heat treatment performing on the coating could awaken the protective effect of zinc powders. The anti-corrosion performance of the repaired coatings was confirmed by electrochemical tests and salt spray tests.

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Investigation of zinc powder modified by ultrasonic impregnation of rare earth lanthanum

Cited by 15 publications

References 21 publications

An effective adsorbent developed from municipal solid waste and coal co-combustion ash for As(V) removal from aqueous solution

An effective adsorbent developed from municipal solid waste and coal co-combustion ash for As(V) removal from aqueous solution

Great improvement over electrochemical performance of zinc electrodes from sonochemical growth of cerium conversion films on zinc powder

Effects of Surface Modification and Heat Treatment on the Storage and Application Properties of Waterborne Zinc-Based Paint

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