Immobilization of Hexavalent Chromium Using Self-Compacting Soil Technology

Rudžionis, Žymantas; Navickas, Arūnas Aleksandras; Stelmokaitis, Gediminas; Ivanauskas, Remigijus

doi:10.3390/ma15062335

Cited by 6 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first two principal dimensions CCA1 and CCA2 explained 35.9% and 18.5 % of the total variance, respectively. A positive correlation was observed between sand and Cu, Zn, As, Pb, and Fe; clay and Al, V, and Ni; Silt and Al, Ni, and V. Here, one is expecting Cr to be positively correlated to soil texture ( Kim & Dixon, 2002 ; Lacroix et al, 2021 ; Rudzionis et al, 2022 ), however, due to high Fe concentration, the pXRF efficiency in reporting the actual amount of Cr declines due to a lower absorption edge in energy than the fluorescent peak of Fe (EPA, 2007). Such an effect can be corrected mathematically using fundamental parameter coefficients related to particle size and matrix effects.…”

Section: Discussionmentioning

confidence: 97%

“…V. Here, one is expecting Cr to be positively correlated to soil texture (Kim & Dixon, 2002;Lacroix et al, 2021;Rudzionis et al, 2022), however, due to high Fe concentration, the pXRF efficiency in reporting the actual amount of Cr declines due to a lower absorption edge in energy than the fluorescent peak of Fe (EPA, 2007). Such an effect can be corrected mathematically using fundamental parameter coefficients related to particle size and matrix effects.…”

Section: Challenges Associated With Select Soil Properties and The Pxrfmentioning

confidence: 99%

See 1 more Smart Citation

Evaluating the Portable X-ray Fluorescence Reliability for Metal(loid)s Detection and Soil Contamination Status

Alqattan,

Artiola,

Walls

et al. 2023

Preprint

View full text Add to dashboard Cite

Environmental Justice (EJ) communities may experience barriers that can prevent soil monitoring efforts and knowledge transfer. To address this gap, this study compared two analytical methods: portable X-ray Fluorescence Spectroscopy (pXRF, less time and costs) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS, “gold standard”). Surface soil samples were collected from yards and gardens in three counties in Arizona, USA (N=124) and public areas in Troy, New York, USA (N=33). Statistical calculations, i.e., two-sample t-tests, Bland-Altman plots, and a two-way ANOVA indicated no significant difference for As, Ba, Ca, Cu, Mn, Pb, and Zn concentrations except for Ba in the two-sample t-test. Iron, Ni, Cr, and K were statistically different for Arizona soils and V, Ni, Fe and Al concentrations were statistically different for New York soils. To assess the degree of contamination, a pollution load index (PLI), enrichment factors (EF), and geo-accumulation index (Igeo) were calculated for both methods using U.S. Geological Survey soils data. The PLI were >1, indicating pollution across the two states. Between pXRF and ICP-MS, the Igeo and EF in Arizona had similar degree of soil contamination for most elements except Zn in garden and Pb in yard, respectively. In New York, the Igeo of As, Cu, and Zn differed by an order of magnitude between the two methods. The results of this study demonstrate that pXRF is a reliable method for the inexpensive and rapid analysis of As, Ba, Ca, Cu, Mn, Pb, and Zn. Thus, EJ communities may use pXRF to screen large numbers of soil samples for several environmentally relevant contaminants to protect environmental public health.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Challenges Associated With Select Soil Properties and The Pxrfmentioning

confidence: 99%

Evaluating the Portable X-ray Fluorescence Reliability for Metal(loid)s Detection and Soil Contamination Status

Alqattan,

Artiola,

Walls

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Heavy metals can have serious environmental impacts and substantial public health concerns, as these heavy metals can accumulate in aquatic life through bioaccumulation and may travel towards the top of the food chain up to human beings through the process of biomagnification [24]. Exposure to heavy metals over a longer period of time may result in various health issues, including, but not limited to, neurological disorders and organ damage [25].…”

Section: Heavy Metalsmentioning

confidence: 99%

Role of White Rot Fungi in Industrial Wastewater Treatment: A Review

et al. 2023

View full text Add to dashboard Cite

White Rot Fungi (WRF) are a class of microorganisms widely understood for their ability to breakdown an extensive range of pollutants generally found in industrial wastewater. This specific literature review centers on the abilities of the White Rot Fungi to treat industrial wastewater, analysis of the biodegradation mechanism, future applications, and scaling up for practical implementation. WRF usually carry out the degradation process with ligninolytic enzyme by targeting complex industrial pollutants, such as aromatic hydrocarbons, dyes, pharmaceuticals, and products of personal care. The unique enzymatic system of WRF converts the complex and harmful industrial pollutants into harmless end and byproducts, thus minimizing the impact on the environment and ecosystem. This review paper also discusses the potential applications of WRF, such as bioremediation, biosorption, and co-culturing with bacteria to enhance the pollutants removal efficiency of already functional wastewater treatment plants. However, there are still challenges in scaling up WRF-based treatment facilities due to factors such as the optimization of conditions and processes of already functional conventional wastewater treatment plants, cost effectiveness, and design modifications of treatment facilities. Conclusively, WRF fungi can play an important role in degrading complex organic and inorganic pollutants specifically, which are not usually treated by conventional wastewater treatment plants.

show abstract

“…The latter will contribute to the decarbonisation vision of the concrete industry by reducing the use of PC and saving carbon emissions. It is believed that the functions of micro fillers in concrete are to increase concrete density, influence capillary porosity and decrease water requirement and shrinkage strains (Rudžionis et al, 2005) as well as to prevent segregation in highly workable mixes and to fill micro voids, creating more dense microstructure, particularly the interfacial zone (ITZ), and increasing impermeability (Vaganov et al, 2017). Fillers also improve the rheological behavior of concrete due to the increase in paste volume and distance between aggregate particles as filler have densities lower than PC (Nguyen et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Influence of the Type of Filler Materials on the Properties of Cement Grouts

Abdalqader

Sonebi

Thornton

et al. 2022

Construction Technologies and Architecture

View full text Add to dashboard Cite

Cement grouts have many purposes in various civil engineering applications such as precast construction, soil stabilization and structural rehabilitation. Using filler materials as a component in cement grouts has been increasingly implemented. The incorporation of such fillers not only does improve the fresh and hardened properties of grouts but also contributes to the decarbonization of grouts by reducing the amount of Portland cement, thereby lowering the carbon footprint of grouting materials. This study aims at assessing the influence of various filler materials on the properties of cement grouts. Three different fillers were used in this study: commercial limestone, commercial pure dolomite, dolomitic quarry dust. These fillers were assessed in terms of their effect on the spread, flowability, cohesion and compressive strength at 3, 7 and 28 days. The results show that fresh properties of the grout were dependent on the type of fillers. Dolomitic quarry dust improved the workability and flowability more than the commercial limestone and dolomite did. The compressive strengths of cement grouts did not change significantly with the incorporation of the fillers. However, cement grout samples including quarry dust exhibited slightly higher 28-d compressive strength than other samples although the same mix had lower 1-d compressive strength than other mixes. This study highlights the benefits of utilizing quarry dust in cement-based binders without compromising the performance.

show abstract

Immobilization of Hexavalent Chromium Using Self-Compacting Soil Technology

Cited by 6 publications

References 40 publications

Evaluating the Portable X-ray Fluorescence Reliability for Metal(loid)s Detection and Soil Contamination Status

Evaluating the Portable X-ray Fluorescence Reliability for Metal(loid)s Detection and Soil Contamination Status

Role of White Rot Fungi in Industrial Wastewater Treatment: A Review

Assessment of the Influence of the Type of Filler Materials on the Properties of Cement Grouts

Contact Info

Product

Resources

About