Green ceramsite production via calcination of chromium contaminated soil and the toxic Cr(VI) immobilization mechanisms

Fan, Chuanhe; Qian, Jueshi; Yang, Yun Mo; Sun, Huaqiang; Song, Jipeng; Yang, Fan

doi:10.1016/j.jclepro.2021.128204

Cited by 43 publications

(10 citation statements)

References 40 publications

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“…1 Due to the widespread use of chromium, it is inevitably discharged into the natural environment. 2 Chromium in wastewater generally exists as trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)). Cr(VI) is more harmful to humans than Cr(III), and the Cr(VI) concentration in industrial wastewater is generally 0.1−200 mg/L.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn(II) and Phytic Acid on Cr(VI) in the Ferrihydrite-Cr(VI) Co-precipitates: Implication for the Migration Behavior of Cr(VI)

Sun

Chrysikopoulos

2022

ACS EST Water

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Understanding the influences of ferrihydrite conversion and co-existing substances on the migration of Cr(VI) in the co-precipitates of ferrihydrite and Cr(VI) (Fh–Cr) is helpful in predicting the migration path of Cr(VI). This work studied the influence of phytic acid on the immobilization of Cr(VI) in ferrihydrite and the migration of Cr(VI) in the presence of phytic acid and Mn(II). The results revealed that phytic acid hindered the retention of Cr(VI) in ferrihydrite and the conversion of ferrihydrite to goethite and hematite. Phytic acid inhibited the formation of hematite by inhibiting ferrihydrite particle aggregation, and the combination of phytic acid and iron ions prevented the formation of goethite. Although phytic acid significantly retarded the conversion of Fh–Cr, it did not hinder the migration of Cr(VI). Besides, the presence of Mn(II) eliminated the negative effect of phytic acid on the immobilization of Cr(VI) in ferrihydrite. The results of this study were helpful in understanding the interaction among ferrihydrite, phytic acid, Mn(II), and the migration path of Cr(VI) during the conversion.

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Section: Introductionmentioning

confidence: 99%

Effect of Mn(II) and Phytic Acid on Cr(VI) in the Ferrihydrite-Cr(VI) Co-precipitates: Implication for the Migration Behavior of Cr(VI)

Sun

Chrysikopoulos

2022

ACS EST Water

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“…At the same time, other elements, such as Te and Bi, are of several times less interest among users of 877 and 308 articles on the toxic effect of Bi and Te on the soil over the same period. The ecotoxicity of chromium in terms of biological indicators was assessed according to several works (Ahmad et al, 2021 ; Fan et al 2021a , 2021b ; Kolesnikov et al, 2009 , 2014 ). According to the data of previous studies on the toxicity of Ag and Bi, its toxic effect on ordinary chernozem was proved even at a dose of 4.4 and 8.5 mg/kg (Kolesnikov et al, 2020 ; Sudina et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…In plant roots, the content of elements varied: they were 0.53 mg Ge and 8.66 mg Si in Z. mays , 0.77 mg Ge and 17.77 mg Si in P. arundinacea and 0.07 mg Ge and 2.64 mg Si in A. sativa , respectively. The content of organic matter in the soil affects the mobility of Ge and its biological properties in the soil (Moschner et al, 2020 ; Fan et al 2021a , 2021b ; Kaiser et al 2020 ). High levels of Ge atoms show low toxicity in the environment, and Ge oxides, like GeO 2 , are highly toxic (Rosenberg, 2009 ; Chen and Lin 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Ecotoxicity of Pollution by Potentially Toxic Elements by Biological Indicators of Haplic Chernozem of Southern Russia (Rostov region)

Колесников

Minnikova

Казеев

et al. 2022

Water Air Soil Pollut

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The content of various chemical elements such as metals, metalloids, and nonmetals in the environment is associated with natural and anthropogenic sources. It is necessary to normalize the content of metals, metalloids, and nonmetals as potentially toxic elements (PTE) in the Haplic Chernozem. The soils of the Southern Russia are of high quality and fertility. However, this type of soil, like Haplic Chernozem, is subject to contamination with a wide range of PTE. The aim of the work was to rank metals, metalloids, and nonmetals by ecotoxicity in Haplic Chernozem. To assess the ecotoxicity of chernozem, data for 15 years (2005–2020) were used. Biological indicators used to assess the ecotoxicity of Haplic Chernozem: catalase activity, cellulolytic activity, number of bacteria, Azotobacter spp. abundance, to change of length of radish’s roots. Based on these biological indicators, an integral indicator of the state of Haplic Chernozem was calculated. The ecotoxicity of 23 metals (Cd, Hg, Pb, Cr, Cu, Zn, Ni, Co, Mo, Mn, Ba, Sr, Sn, V, W, Ag, Bi, Ga, Nb, Sc, Tl, Y, Yb), 5 metalloids (B, As, Ge, Sb, Te) and 2 nonmetals (F, Se) as priority pollutants. It is proposed to distinguish three hazard classes of metals, metalloids, and nonmetals to Haplic Chernozem: I class — Te, Ag, Se, Cr, Bi, Ge, Sn, Tl, Hg, Yb, W, Cd; II class — As, Co, Sc, Sb, Cu, Ni, B, Nb, Pb, Ga; III class — Sr, Y, Mo, Zn, V, Ba, Mn, F. It is advisable to use the results of the study for predictive assessment of the impact of metals, metalloids, and nonmetals on the ecological state of the soil during pollution.

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“…The sintering behavior of spinel corundum ceramics is preliminarily analyzed. In addition, the liquid phase process is modified by adding pyrolusite in the ceramic system to obtain high strength ceramics (Shao et al 2022 ; Fan et al 2021 ). In summary, the above studies added binders (such as Portland cement, fly ash, and lime) to WDC to effectively fix pollutants through chemical fixation and physical coating.…”

Section: Introductionmentioning

confidence: 99%

Human carcinogenic risk analysis and utilization of shale gas water-based drilling cuttings in road materials

Wang

Chen

Huang³

et al. 2022

Environ Sci Pollut Res

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Water-based drilling cuttings (WDC) generated during shale gas development will endanger human health and ecological security. The modern analytical techniques are used to analyze the organic pollutants in WDC, and the human health and ecological security risks of harmful pollutants in WDC under specific scenarios are evaluated. The results showed that the content of organic pollutants in WDC was evaluated by human health and safety risk assessment. The comprehensive carcinogenic risks of all exposure pathways of single pollutant benzo(a)anthracene, benzo(a)pyrene, benzo(k)fluoranthene, and indeno(1,2,3-cd)pyrene were acceptable. However, the cumulative carcinogenic risk of exposure to dibenzo(a,h)anthracene particles via skin exposure was not acceptable. It was considered that only dibenzo(a,h)anthracene had carcinogenic effect, and the risk control limit of dibenzo(a,h)anthracene in WDC was 1.8700 mg/kg by calculation. As well as, the “WDC-cement” gel composite structure was deeply analyzed, and the physical and chemical properties and mechanism of organic pollutants in cement solidified WDC were analyzed, which provided theoretical support for the study of WDC pavement cushion formula. Based on the above conclusions and combined with the actual site, by studying and adjusting the formula of WDC pavement cushion, the WDC pavement cushion was finally designed by 6% cement + 50% WDC + 44% crushed stone. The 7d unconfined compressive strength met the requirements of the Chinese standard “ Technical Guidelines for Construction of Highway Roadbases ” (JTG/T F20-2015). Also, the process route of WDC as road cushion product was sampled and analyzed. In addition, the leaching concentration of main pollutants all met the relevant standards of China. Therefore, this study can provide a favorable way for the efficient, safe, and environmentally friendly utilization of WDC, and ensure the ecological environment safety and human health safety of WDC in resource utilization.

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Green ceramsite production via calcination of chromium contaminated soil and the toxic Cr(VI) immobilization mechanisms

Cited by 43 publications

References 40 publications

Effect of Mn(II) and Phytic Acid on Cr(VI) in the Ferrihydrite-Cr(VI) Co-precipitates: Implication for the Migration Behavior of Cr(VI)

Effect of Mn(II) and Phytic Acid on Cr(VI) in the Ferrihydrite-Cr(VI) Co-precipitates: Implication for the Migration Behavior of Cr(VI)

Assessment of the Ecotoxicity of Pollution by Potentially Toxic Elements by Biological Indicators of Haplic Chernozem of Southern Russia (Rostov region)

Human carcinogenic risk analysis and utilization of shale gas water-based drilling cuttings in road materials

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