Recovery of precious metals from waste streams. ... of Valuable Metals from Lignite Ash. In Advanced Materi- ... This review addresses the biosynthesis of metal nanoparticles, focusing on mining ...
Abstract. The production and use of silver nanoparticles (AgNPs) in industrial and commercial products increased significantly in recent years. During the production, manufacturing, use and disposal of AgNP containing products, AgNPs would be released into the environment inevitably.
lignite and bituminous Fe-GAC but was most pronounced in lignite-based Fe- GAC having the highest Fe content (13.4% Fe) which showed the most favorable Freundlich adsorption and intensity parameters for arsenic of Ka = 72.6 (µg-As/g-
NLC India Limited (NLC) (formerly Neyveli Lignite Corporation Limited) is a 'Navratna' government of India company in the fossil fuel mining sector in India and thermal power generation. It annually produces about 30 million tonne lignite from opencast mines at Neyveli in the state of Tamil Nadu in southern India and at Barsingsar in Bikaner district of Rajasthan state.
Jun 10, 2014· Preparation of Nanoparticles 1. Ena Athaide Department of Biochemistry Institute of Science,Mumbai Msc-1,Sem-2 2. what is "nano" technology • A technology that measures,manipulate or incorporate materials or features with a critical dimension between 1 – 100 nm, also whose application exploit properties distinct from bulk
PREFACE. It was a great pleasure to welcome all the participants in the 2017 2nd International Conference on Mining, Materials and Metallurgical Engineering (ICMMME 2017) held in Bangkok, Thailand, 17 - 19 March 2017.
@article{osti_22215154, title = {Preparation of surface modified zinc oxide nanoparticle with high capacity dye removal ability}, author = {Mahmoodi, Niyaz Mohammad, E-mail: [email protected] and Najafi, Farhood}, abstractNote = {Highlights: Amine-functionalized zinc oxide nanoparticle (AFZON) was synthesized. Isotherm and kinetics data followed Langmuir …
Introduction Metallic nanoparticles are, as the name suggests, nanosized metals with at least one of the dimensions within 1 to 100 nm. Under this definition one can classify metallic nanomaterials in to four main categories. They are, metallic nanoparticles (0D), metallic nanowires and rods (1D), metallic sheets and platelets (2D) metallic nanostructures (3D).
Guang-Hui Liu's 26 research works with 7 citations and 395 reads, including: Catalytic hydroconversion of derivates from Naomaohu lignite over an active and recyclable bimetallic catalyst
Dec 21, 2017· Raman spectra of all the three samples (LC1, LC2 and LC3) shows strong graphitic peak at 1562 cm −1, 1574 cm −1 and 1569 cm −1 and a defect peak at 1340 cm −1, 1330 cm −1 and 1380 cm ...
May 27, 2019· Iron nanoparticles (nano Fe) were extracted from coal fly ash (CFA) or ferric chloride (FeCl3) and used for acid mine drainage (AMD) remediation. Characterisation was achieved by X-ray diffraction (XRD), X-ray fluorescence, scanning electron microscopy-energy dispersive spectroscopy (SEM–EDX), high resolution transmission electron microscopy (HRTEM), and the …
nanoparticles were studied. As expected, the combination the above mentioned elements led to a hydrogel with enhanced swelling and adsorption capacities towards wastewater common dyes such as rhodamine 6 G and 2-nitrophenol. Keywords: hydrogel, graphene oxide, silver nanoparticles, swelling, dye adsorption 1. Introduction
Petroleum and Coal. Pet Coal (2019); 61(3): 467-476 ISSN 1337-7027 an open access journal . nm, lignite NPs is 63 nm, and barite NPs is 112 nm. While the size of XC polymer NPs ranging from 10.6 to 5. The 8 nm to 339.68 nm. Figure 2. Particle size distribution of bentonite . Figure 3. SEM image of XC polymer NPs . Figure 4.
Silver metal nanoparticle (NP) enhanced fluorescence is investigated in thin films of cyanobacterial Photosystem I trimer complexes (PSI) by correlating confocal laser scanning microscopy, dark-field imaging, and fluorescence lifetime measurements. PSI represents an interesting light-harvesting complex with a 20 nm diameter that is not uniformly contained within the surface-localized plasmon ...
of metallic nanoparticles in solution was first recognized by Faraday in 1857 and a quantitative explanation of their colour was given by Mie in 1908. Figure 2. The growth of number of publications dealing with metal nanoparticles [Juan M. Campelo – ChemSusChem 2009,2]
Dec 10, 2005· Lignite raw / heavy : 900 - 960 kg/cu. m Germany is extensively dealing with lignite. One German publication mentions following bulk densities : Lignite dry : 500 - 900 kg/cu. m Lignite, wet : 900 kg/cu. m Your first statement regarding bulk density of 1.4 t/cu m for wet lignite looks to be on higher side. The lignite is primarily made from wood.
Heavy metals contamination of drinking water has significant adverse effects on human health due to their toxic nature. In this study a new adsorbent, magnetic graphitic nanostructures were prepared from watermelon waste. The adsorbent was characterized by different instrumental techniques (surface area analyzer, FTIR, XRD, EDX, SEM, and TG/DTA) and was used for the removal of heavy metals (As ...
Ashes from lignite combustion for power generation contain considerable amounts of strategic metals, metalloids and rare earth elements. Within the presented project bioleaching with different types of microorganisms was investigated to recover valuable metals from lignite ashes. An increased mobilization of several metals ions was observed with the gluconic acid-producing bacterium ...
Publications. M. Baysal, A. Yürüm, B. Yıldız, Y. Yürüm, Structure of some western Anatolia coals investigated by FTIR, Raman, 13C solid state NMR spectroscopy and X-ray diffraction, International Journal of Coal Geology 163 (2016) 166–176. Z. O. Kocabas-Ataklı, F. Okyay-Oner, Y. Yürüm, Combustion characteristics of Turkish hazelnut shell biomass, lignite coal, and their respective ...
Metal-nanoparticles are, in general, one of the most common nanotechnology-based approaches for enveloping biosensors, due to their simplicity, physiochemical malleability and high surface areas.They can measure between 1 to 100 nm in diameter, have different shapes and can be composed of one or more inorganic compounds, such as noble metals, heavy metals, iron, etc.
Actinide chemistry (or actinoid chemistry) is one of the main branches of nuclear chemistry that investigates the processes and molecular systems of the actinides.The actinides derive their name from the group 3 element actinium. The informal chemical symbol An is used in general discussions of actinide chemistry to refer to any actinide. All but one of the actinides are f-block elements ...
Magnetite is very easy to identify. It is one of just a few minerals that are attracted to a common magnet. It is a black, opaque, submetallic to metallic mineral with a Mohs hardness between 5 and 6.5. It is often found in the form of isometric crystals. It is the most strongly magnetic mineral ...
Lignite Energy Council and partners announce release of coal movie Film will be broadcast on digital channels and coalmovie.com This week, the Lignite Energy Council and Coalition for a Secure […] Bismarck and Fargo recognized for clean air by the American Lung Association
Sep 17, 2018· Lignite is an abundantly utilized feedstock for the facile synthesis of fluorescent carbon dots and carbon nanomaterials. Its value is appreciated as an energy source for combustion for long time.
DIFFERENT TECHNIQUES USED FOR THE PREPARATION OF NANOPARTICLES USING NATURAL POLYMERS AND THEIR APPLICATION *A.KRISHNA SAILAJA, P.AMARESHWAR, P.CHAKRAVARTY University college of Technology, Osmania University, Hyderabad Email: [email protected],
The metal–carboxylate interactions formed when metal ions were added into demineralized coal samples. K + interacted with the carboxyl structure in lignite in the form of ionic forces, while Ca 2+ interacted with the lignite in the form of both ionic forces and polycarboxylic coordination. The different interaction forms led to different ...
Humic substances are organic compounds that are important components of humus, the major organic fraction of soil, peat, and coal (and also a constituent of many upland streams, dystrophic lakes, and ocean water).For a long era in the 19th and 20th centuries, humic substances were often viewed through a lens of acid–base theory that described humic acids, as organic acids, and their ...
These processes resulted in significant reduction (up to 9.65%) in moisture from as-received lignite coal (34%), especially at higher temperatures (300 and 325°C) using HT for 30 minutes. Vacuum drying (70°C) over the period of 7 hours and hot air drying (70°C) for 110 minutes liberated almost the same amount of moisture from the raw coal.