Toxicity, mechanism and health effects of some heavy metals

2014-11-15 · Arsenic. Arsenic is one of the most important heavy metals causing disquiet from both ecological and individual health standpoints (Hughes et al., 1988) has a semimetallic property, is prominently toxic and carcinogenic, and is extensively available in the form of oxides or sulfides or as a salt of iron, sodium, calcium, copper, etc. (Singh et al., 2007).

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Heavy Metals Toxicity and the Environment

Heavy metals are naturally occurring elements that have a high atomic weight and a density at least 5 times greater than that of water. Their multiple industrial, domestic, agricultural, medical and technological applications have led to their wide distribution in the environment; raising concerns over their potential effects on human health and the environment.

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Modes of occurrence and removal of toxic elements from ...

2019-6-27 · 1 INTRODUCTION. Many coals in southwestern China are characterized by a high sulfur (S) content. 1 These high‐S coals are usually enriched with uranium (U). 2 Uranium is a naturally radioactive element, and the ultrafine particles released from U‐rich coals during combustion can have potentially adverse effects on human health. 3-5 Coal preparation is one effective approach to reducing ...

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Mining precious rare-earth elements from coal fly ash with ...

2021-6-23 · Mining precious rare-earth elements from coal fly ash with a reusable ionic liquid Date: June 23, 2021 Source: American Chemical Society Summary: Rare-earth elements are in …

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Bangjun LIU | Dr. | Hebei University of Engineering ...

Five types of Rb and Cs were determined in the coal: water soluble, ion exchangeable, organic bonded, carbonate, and silicate. The results indicated that the occurrence of Cs is similar with Rb in ...

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Acidophilic bacteria and archaea: acid stable biocatalysts ...

Acidophiles are ecologically and economically important group of microorganisms, which thrive in acidic natural (solfataric fields, sulfuric pools) as well as artificial man-made (areas associated with human activities such as mining of coal and metal ores) environments. They possess networked cellu …

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Heavy Metal Removal by Bioaccumulation Using Genetically ...

2020-8-26 · genetic diversity than other populations, this result is consistent with Ge et al. [25]. Conversely, SZS popula-tion lies at the southernmost tip of TM distribution area west of the Yellow River, the distribution area was adja-cent to several big industrial parks in HuiNong district and backfill zone of open-pit coal mine, coal mining and

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Coal Bed Methane Enhancement Techniques: A Review

2019-3-28 · Underground coal gasification can be used to recover energy from methane depleted, unminable coal reservoirs and has many advantages over surface mining. CBM consists of both thermogenic and biogenic origin. Depleted CBM reservoirs are observed to produce methane even after recovery is done.

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Coal mining impacts on catchment runoff

2020-10-1 · The impact of coal mining on streamflow reduction was dominant, reaching 29.88 mm, 54.24% in 1997–2013. This study. Kuye River Basin. SIMHYD-PML model. It isolates coal mining impacts on runoff, indicating the total surface runoff for the entire Kuye River Basin reduced by 48.3% from 1998 to …

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Enhanced Mercury Biosorption by Bacterial Cells with ...

2003-6-1 · The metalloregulatory protein MerR, which exhibits high affinity and selectivity toward mercury, was exploited for the construction of microbial biosorbents specific for mercury removal. Whole-cell sorbents were constructed with MerR genetically engineered onto the surface of Escherichia coli cells by using an ice nucleation protein anchor. The presence of surface-exposed MerR on the ...

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(PDF) Review of coal as a promising source of lithium

Coal is considered as a promising source for lithium and there is a huge gap in the research for lithium recovery from coal and CFA (Seredin et al. 2013; Qin et al. 2015b). Literature review ...

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Gas Origin and Constraint of δ13C(CH4) Distribution in the ...

2020-10-16 · The gas origin in the Dafosi mine field is mainly composed of biogenic gas from CO2 reduction and mixed thermogenic gas. The former content accumulated in the present coal seams ranges from 68.93% to 100.00%, as calculated by the binary mixing model. A web-based learning tool also indicates mostly CO2 reduction-biogenic gas.

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Energy Science & Engineering: Early View

2021-6-10 · The disturbance of mine ventilation system during the disaster of coal and gas outburst can lead to the occurrence of secondary disasters in the mine. The concept of gas natural wind pressure is put forward, and the calculation method of gas natural wind pressure in mine …

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(PDF) Surface Coal Mining Methods in Australia

Overall mining sequence of a typical surface coal mine in Australia (after Westcott et. al., 2009). 2.1 Dragline method. Dragline is the predominant mach ine which is used to remove the overburden ...

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Genesis, controls and risk prediction of H2S in coal mine ...

2021-3-11 · Abnormal H2S concentration in coal mine gas is a serious threat to normal mining activities, which has caused serious loss of life and property in many coal mines. This study explores the genesis ...

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Frontiers | Engineering microbial consortia to enhance ...

2012-6-5 · Engineering microbial consortia to enhance biomining and bioremediation. Karl D. Brune and Travis S. Bayer *. Centre for Synthetic Biology and Innovation, Division of Molecular Biosciences, Imperial College London, London, UK. In natural environments microorganisms commonly exist as communities of multiple species that are capable of performing ...

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In Situ EXAFS of Nickel Species during Pyrolysis of Brown ...

1997-9-18 · An extended X-ray absorption fine structure (EXAFS) spectroscopy technique has been used to examine the behavior and properties of highly dispersed ion-exchanged nickel species in Loy Yang brown coal samples during pyrolysis. At low loadings (1.4−1.6 wt %) the nickel species aggregate to metal particles at 750 K. At high loadings (6.4−7.5 wt %), however, the nickel species aggregate to ...

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Composition, Origin, and Distribution of Coalbed Methane ...

2019-5-25 · This study researched the geochemical origin of coalbed methane (CBM) in three mining areas of the Huaibei coalfield and the distribution of different origin gases. The Rock-Eval data indicate that coal and coaly mudstone in this coalfield are both good gas-source rocks and are within the gas generation window. The large ranges of isotope data (δ13CCH4 = −42.8‰ to −75.5‰; δDCH4 = − ...

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Bangjun LIU | Dr. | Hebei University of Engineering ...

A ''read'' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

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Professor Longbin Huang

Longbin Huang is a full professor and a Program leader in The University of Queensland, leading a research program of "Ecological Engineering of Soil-Plant Systems".Driven by the passion to translate leading knowledge into industry solutions, Longbin has pioneered transformative concepts and approach to tackle rehabilitation of mine wastes (e.g., tailings), focusing on "ecological engineering ...

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Clarivate

Clarivate

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Population genetic structure and gene flow of rare and ...

2020-8-26 · genetic diversity than other populations, this result is consistent with Ge et al. [25]. Conversely, SZS popula-tion lies at the southernmost tip of TM distribution area west of the Yellow River, the distribution area was adja-cent to several big industrial parks in HuiNong district and backfill zone of open-pit coal mine, coal mining and

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Yi DU | Lecturer | Doctor of Engineering | Northwest ...

Pores in coal and their connectivity are important properties of coal, providing network or channels for gas storage and migration within coal, e.g. during the coalbed methane (CBM) recovery.

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Biomining Rare-Earth Elements | Cornell Engineering

2021-8-24 · Cornell engineers are pioneering a novel method for mining metals that are key to unlocking a sustainable future. By Chris Dawson. In the search for more sustainable energy technologies, many of the solutions humans are turning to – rechargeable batteries, massive wind turbines, electric cars, LED lighting – rely on what are known as rare-earth elements.

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Advantages of strategic mine planning

1987-9-1 · Mining Science and Technology, 5 (1987) 309-317 309 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands ADVANTAGES OF STRATEGIC MINE PLANNING A.B. Szwilski Department of Mining Engineering, College of Engineering, University of Kentucky, Lexington, KY (U.S.A.) (Received February I987; accepted April 3, 1987) ABSTRACT Strategic planning is being …

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Fuel | Journal | ScienceDirect by Elsevier

About the journal. Research into energy sources remains a key issue. Over the last 90 years, Fuel has been the leading source of primary research work in fuel science. The scope is broad and includes many topics of increasing interest such as environmental aspects and pollution. A …

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Heavy Metal Removal by Bioaccumulation Using Genetically ...

2018-10-29 · Wastewater effluents from mines and metal refineries are often contaminated with heavy metal ions, so they pose hazards to human and environmental health. Conventional technologies to remove heavy metal ions are well-established, but the most popular methods have drawbacks: chemical precipitation generates sludge waste, and activated carbon and ion …

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Engineering Applications of Artificial Intelligence ...

About the journal. Artificial Intelligence (AI) is playing a major role in the fourth industrial revolution and we are seeing a lot of evolution in various machine learning methodologies. AI techniques are widely used by the practicing engineer to solve a whole range of hitherto intractable problems. This journal ….

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2018-3-1 · 1.Plant nutrition genetic engineering; 2.Plant stress physiology and molecular biology; 3.Biosynthesis and metabolic regulation of active constituents in medicinal plants Email: [email protected] Limei Chen: , Doctor, Professor, Doctoral Supervisor

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New acid mine drainage treatment turns waste into valuable ...

2020-8-5 · Mining Precious Rare-Earth Elements from Coal Fly Ash With a Reusable Ionic Liquid June 23, 2021 — Rare-earth elements are in many everyday …

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