Laboratory assessment of rice husk ash (RHA) in the solidification/stabilization of heavy metal contaminated slurry

Chiu, C. F.; Akesseh, Raphael; Moumouni, Ibrahim M.; Xiao, Yi

doi:10.1016/j.jhazmat.2019.02.051

Cited by 34 publications

(5 citation statements)

References 51 publications

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“…By, utilizing this RHA in the development of composite material, some environmental problem can be reduced. 7 However, various researchers are used RHA in the development of different materials as shown in Table 1. Keeping these facts in the mind, in this study, waste RHA is used as primary reinforcement material.…”

Section: Introductionmentioning

confidence: 99%

Utilization of waste spent alumina catalyst and agro-waste rice husk ash as reinforcement materials with scrap aluminium alloy wheel matrix

Dwivedi¹,

Sharma²,

Saxena³

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this study, an attempt was made to utilize waste products from industries to develop composite materials. In the present study, car scrap aluminium alloy wheels (SAAWs) was used as matrix material. Waste rice husk ash (RHA) was collected from a rice mill to utilize as a primary reinforcement material. Spent alumina catalyst (SAC) waste was used as a secondary reinforcement material. SAC was collected from the oil refinery industry. These wastes produced lots of soil and air pollution. However, by utilizing these wastes, some environment pollutions can be reduced. Car scrap aluminium alloy wheels (SAAWs) based composite material was developed using RHA as primary reinforcement material and SAC as a secondary reinforcement material by stir casting technique followed by squeeze pressure on the universal testing machine (UTM) in mushy zone. Microstructure behaviour shows a uniform distribution of RHA and SAC in a recycled aluminium alloy matrix. Mechanical properties such as hardness, ductility, compressive strength and tensile strength were improved using RHA and SAC as reinforcement material simultaneously in SAAWs matrix material. Thermal expansion behaviour, soil degradation test and corrosion loss were also observed to see the effect of agro-waste RHA and SAC in recycled aluminium alloy.

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Section: Introductionmentioning

confidence: 99%

Utilization of waste spent alumina catalyst and agro-waste rice husk ash as reinforcement materials with scrap aluminium alloy wheel matrix

Dwivedi¹,

Sharma²,

Saxena³

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…06 mg / L. From the XRD spectrum, it was concluded that lead nitrate was precipitated on the surface of C-S-H as a metal hydration phase or metal hydroxide, which reduced the solubility. Abraham C. F. Chiu [65]used rice husk ash instead of 20 % -40 % cement to solidify artificially prepared heavy metal contaminated soil. The results showed that compared with pure cement solidified contaminated soil, the incorporation of rice husk ash significantly reduced the diffusion coefficient of Pb and Cu content samples.…”

Section: Effect Of Solidified Soil From Rice Husk Ash On Leaching Of Heavy Metalsmentioning

confidence: 99%

Research progress of rice husk ash in solidified soil

et al. 2021

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Rice husk ash is a kind of volcanic ash material with high silicon. This also provides a feasibility for rice husk ash as cement-based auxiliary cementing material. China is rich in rice husk resources, and the rice husk ash is stacked. Using rice husk ash (RHA) instead of traditional cementitious materials can effectively solve the environmental pollution caused by the accumulation of rice husk ash. Domestic and international scholar have added rice husk ash as mineral admixture to concrete, but the utilization rate is very low. In order to increase the added value of rice husk ash, the high silicon property of rice husk ash was used to solidify soil. The application range of solidified soil is wide, the requirements for materials are not high, and the functions are different, which can realize the extensive use of rice husk ash. This paper summarizes the literature on comprehensive utilization of rice husk ash at home and abroad, systematically expounds the physicochemical properties and production process of rice husk ash, introduces the application of rice husk ash in solidified soil, and points out the unsolved problems in this field, which provides a direction for the further development.

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“…Remediating soils polluted by heavy metals has emerged as a challenging task globally [4,5]. Stabilization/solidification technology has become one of the commonly used repair technologies due to its rapid process and economic advantages [6]. Hyperaccumulating phytoremediation of heavymetal-contaminated soils is a current research area.…”

Section: Introductionmentioning

confidence: 99%

Remediation of Pb-, Zn-, Cu-, and Cd-Contaminated Soil in a Lead–Zinc Mining Area by Co-Cropping Ilex cornuta and Epipremnum aureum with Illite Application

Li,

Tang,

Dong

et al. 2024

Agriculture

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Phytoremediation is considered an effective strategy for remediation of heavy-metal-contaminated soil in mining areas. However, single-species plants cannot reach the highest potential for uptake of heavy metals due to inhibition of their growth by high concentrations of heavy metals in the soil. Therefore, this study has explored the effects of illite application and two plant species’ co-cropping on soil quality, plant growth, and heavy metal transformation in a soil–plant system. The results reveal that the addition of 1% (mass fraction) of illite significantly enhances soil pH. The co-cropping of Ilex cornuta and Epipremnum aureum is beneficial for improving the organic matter content of the soil. The contents of EDTA-extractable Pb, Zn, and Cu were significantly reduced by 29.8–32.5%, 1.85–5.72%, and 30.0–32.9%, respectively, compared to the control. The co-cropping of Ilex cornuta and Epipremnum aureum promoted enrichment effects of Epipremnum aureum on Pb and Ilex cornuta on Cd (p < 0.05). The co-cropping pattern lowered the biomass of Ilex cornuta and Epipremnum aureum; however, co-cropping of Ilex cornuta and Epipremnum aureum promoted the elimination of Pb, Zn, Cu, and Cd from the soil at 13.0–75.8%, 11.1–38.2%, 8.39–88.4%, and 27.8–72.5%, respectively. It is concluded that illite application combined with co-cropping of Ilex cornuta and Epipremnum aureum is highly effective for the elimination of Pb, Zn, Cu, and Cd from contaminated soil. This study provides a theoretical basis and pathway for the restoration of heavy-metal-contaminated soil in mining with the application of bentonite combined with phytoremediation.

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Laboratory assessment of rice husk ash (RHA) in the solidification/stabilization of heavy metal contaminated slurry

Cited by 34 publications

References 51 publications

Utilization of waste spent alumina catalyst and agro-waste rice husk ash as reinforcement materials with scrap aluminium alloy wheel matrix

Utilization of waste spent alumina catalyst and agro-waste rice husk ash as reinforcement materials with scrap aluminium alloy wheel matrix

Research progress of rice husk ash in solidified soil

Remediation of Pb-, Zn-, Cu-, and Cd-Contaminated Soil in a Lead–Zinc Mining Area by Co-Cropping Ilex cornuta and Epipremnum aureum with Illite Application

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