Coal fly ash effluent affects the distributions of Brachionus calyciflorus sibling species

Zhang, Gen; Xi, Yi-Long; Xue, Yadong; Xiang, Xian-Ling; Wen, Xin-Li

doi:10.1016/j.ecoenv.2014.09.036

Cited by 10 publications

(5 citation statements)

References 41 publications

(50 reference statements)

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“…Based on the analyses of rDNA 18S–28S ITS and mtDNA COI fragments, rotifers were classified into two sibling species 27 , 28 . The sibling species I was observed in all the three lakes, but sibling species II was only found in Lake Tingtang.…”

Section: Methodsmentioning

confidence: 99%

Morphological differentiation of Brachionus calyciflorus caused by predation and coal ash pollution

Xue

Yang

Zhang

et al. 2017

Sci Rep

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Different rotifer stains exhibited remarkably morphological differences which could not be eliminated under laboratory conditions. In the present study, we hypothesized that predation pressure and pollution might be two forces driving morphological differentiation of rotifer. To test this hypothesis, rotifers (Brachionus calyciflorus) belonging to two sibling species were collected from three special lakes (with coal ash pollution, high predation pressure or neither) and cultured for more than three months to investigate their potential differentiation in morphology. Twelve morphological parameters were measured and compared among three lakes at four food density (Scenedesmus obliquus). The results showed that most of the tested morphological parameters changed in response to food level and differed among three habitats. Rotifers from the habitat with high predation pressure evolved stable long posterior lateral spine and relatively small body size. Rotifers collected from the polluted habitat was of smaller body size, compared with those from ordinary habitat. Bigger eggs were laid by rotifers from polluted area or lake with high predation pressure, enabling newborns more resistant to pollution or predation, and thus ensuring the survival rate of newborns. Finally, we concluded that both predation and pollution could affect the morphological differentiation and evolution of rotifers.

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Section: Methodsmentioning

confidence: 99%

Morphological differentiation of Brachionus calyciflorus caused by predation and coal ash pollution

Xue

Yang

Zhang

et al. 2017

Sci Rep

Self Cite

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“…However, due to its low strength, it is currently used as a filling material in engineering construction. Scholars have focused on the study of its combination with light steel to form a composite structure for load-bearing members (Zhang et al, 2015;Kannan et al, 2020;Chen and Guan, 2017). The mechanical properties of the material itself are not improved to achieve load-bearing.…”

Section: Introductionmentioning

confidence: 99%

Mix Ratio of Graphite Tailings Foam Concrete Based on Orthogonal Theory

Qin,

Lorenzini,

Zhang

et al. 2023

Smart Manufacturing and Material Processing (SMMP)

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In order to study the effects of water-binder ratio, fly ash content, sand-binder ratio and the amount of Graphite Tailings replacing river sand on the mechanical and physical properties of Graphite Tailings Foam Concrete (GTFC), based on the orthogonal theory, the 7d compressive strength, 28d compressive strength and porosity of graphite tailings foamed concrete were analyzed by range analysis and variance analysis. At the same time, the compressive strength and porosity of foamed concrete as performance indicators of the matrix analysis of a single proportion of optimization. The results show that among the factors affecting the compressive strength of GTFC, the content of fly ash and the water-binder ratio are the main factors, the order of influencing the compressive strength of fly ash foamed concrete is water-cement ratio, fly ash, sand-cement ratio and the amount of river sand replaced by graphite tailings, among the factors influencing the porosity of GTFC, the sand-cement ratio is the main factor, the order of influencing porosity of fly ash foamed concrete is sand-binder ratio, fly ash-water-binder ratio, graphite tailings instead of river sand, porosity and compressive strength are taken as performance indexes of foamed concrete, the optimized ratio of Matrix analysis is as follows: water-binder ratio 0.44, fly ash 40% , sand-binder ratio 0.8, graphite tailings 15% to replace river sand.

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“…Izquierdo (2012) and others have compared the leaching characteristics of more than 90 kinds of fly ash [6]. It is found that these heavy metals in fly ash including Cd, Cr, Co, Cu, Hg, Ni, Pb, Sn, Zn, As will be leached and transferred to the environment [7] and thus causing severe environmental pollution [8][9] when the environmental pH value decreases.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy Characteristic Study and Exploration on the Valuable Metals Enrichment of Coal Fly Ash

Chen

Yan

et al. 2019

Preprint

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The separation and enrichment can be targeted to enrich the rare and precious metals in fly ash and reduce the cost of leaching and recovering of fly ash. Regarding their different properties, the single-component separation was used to obtain uncompleted burned carbon, glass microbeads, minerals, and other characteristic components from the ash. Also, the mineral composition of each component was analyzed by electron microscopy. The metal minerals were mainly concentrated in the mineral components. Besides, the electron probe micro-analysis shows that the Pt content in the minerals of fly ash was significantly correlated with the metal contents of Ni and Cu. After the obtainment of the characteristics of fly ash metal enrichment, the heavy minerals with Cu, Ni, Pt, Pd, and other target metal elements were enriched by gravity separation and flotation. The enrichment coefficients of Cu, Ni, Pt, and Pd were 1.45, 1.33, 1.90 and 1.60, respectively, and the recovery rates were 77%, 81%, 97% and 88% respectively. Since the yield of heavy minerals obtained by separation was 62.24%, it indicated the physical separation method could significantly reduce the cost of leaching and recovering of fly ash metal resources.

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Coal fly ash effluent affects the distributions of Brachionus calyciflorus sibling species

Cited by 10 publications

References 41 publications

Morphological differentiation of Brachionus calyciflorus caused by predation and coal ash pollution

Morphological differentiation of Brachionus calyciflorus caused by predation and coal ash pollution

Mix Ratio of Graphite Tailings Foam Concrete Based on Orthogonal Theory

Mineralogy Characteristic Study and Exploration on the Valuable Metals Enrichment of Coal Fly Ash

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