Activated carbon
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In this research, in an attempt to make use of the kaolin resources in Vietnam, we present a synthetic process of zeolite A via hydrothermal from kaolinite, together with the modification process of zeolite A using different metallic cations. The characteristics of the prepared zeolite LTAs such as chemical composition and crystalline structure, as well as their catalytic activity in the methanation reaction of carbon dioxide (CO2) to methane (CH4) were extensively investigated.
8p dianmotminh02 03-05-2024 5 1 Download
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Waste from Jackfruit has little economic value and often causes serious environmental problems. The conversion of jackfruit waste will help reduce waste treatment costs, provide a potential source of raw materials for the activated carbon (AC) and increase economic value. In this study, the ACs from the Jackfruit shell and pulp were synthesized by microwave assistance for removing organic dyes.
13p vidoctorstrange 06-05-2023 10 2 Download
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The specific objectives of this study are: 1. To conduct a literature review on carbon-based hydrogen storage electrodes and direct proton absorbance in various forms of carbon; 2. To prepare and characterise activated carbon samples with proper porosity for the present application; 3. To manufacture and characterise a range of composite materials containing carbon material and a proton-conducting medium such as nafion in various levels of hydration 4. To fabricate a number of membrane-electrode-assembly (MEA) from the composite materials;…
264p runthenight05 01-03-2023 5 2 Download
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The aim of the work "Activated carbon derived from rice husk by NaOH activation and its application in supercapacitor" is to prepare a low-cost, high specific surface area activated carbon with microporous and mesoporous ranges using rice husk as the raw material. The effects of activation temperature on the specific surface area, pore structure, morphology and thermal stability of the AC samples have been examined. The AC samples were proved to be excellent electrode material for supercapacitor, hence solve the disposal and pollution problems of rice husk.
9p runordie3 27-06-2022 9 2 Download
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Chất lượng nước sạch cho nhu cầu hàng ngày của các cơ sở y tế đang là vấn đề bức thiết. Nghiên cứu này tiến hành với mô hình màng MF kết hợp quá trình hấp phụ than hoạt tính (Powered activated carbon – PAC) xử lý nguồn nước thô cho các cơ sở y tế quy mô nhỏ. Nghiên cứu được thực hiện với mô hình màng vi lọc (microfiltration – MF) xử lý nguồn nước thô trong thời gian 40 ngày với hai chế độ vận hành màng lọc liên tục (CMF) và màng lọc liên tục kết hợp than hoạt tính (CMF-PAC).
6p vikissinger 03-03-2022 19 2 Download
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The success of converting graphite waste to an engineered dye adsorbent couples the advantages of converting industrial waste to a beneficial product and removal of toxic dyes thus achieving the circular economy and sustainable development in industrial practices.
13p thebadguys 15-01-2022 18 0 Download
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The photocatalytic sterilization activity of polymeric carbon nitride is closely related to its microstructure. In this study, four kinds of polymeric carbon nitride were prepared with melamine, dicyandiamine, thiourea and urea as precursors respectively.
7p thebadguys 15-01-2022 10 0 Download
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In this study, 341 Bacillus sp. strains were isolated from agricultural soils of Turkey. The potent extracellular lipase producer was selected. It was identified by 16S rRNA, named as Bacillus cereus ATA179. Optimal nutritional and physical parameters for lipase production were determined. Sucrose as the carbon source, (NH4 )2 HPO4 as the nitrogen source, CaCl2 as the metal ion were obtained. The best results of physical parameters were stated at 45°C, pH 7.0, shaking rate 50 rpm, inoculation amount 7% and inoculum age 24 h.
14p thiencuuchu 27-11-2021 18 2 Download
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Objective of the study: The general objective of this study is to produce catalysts of bimetallic oxides (Cu-Co), on porous materials (activated carbon, silica gel, MCM-41) to adsorb and oxidize VOCs, which is represented by toluene, a popular VOCs with particular properties of the BTEX group in many industrial factories, at low temperature.
144p armyofthedead 23-06-2021 14 2 Download
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Research purpose: Using computational chemistry methods to study the mechanism of hydrogenation CO on the transition metal catalyst systems of Ni, Cu, Co, bimetallic catalysts NiCu, CoCu and catalytic systems bearing cluster on oxide carriers: MgO, Al2O3 and activated carbon (AC); compare and clarify the role of catalyst centers in single or bimetallic catalyst systems; clarifies the role of carriers (MgO, Al2O3 and AC) in the hydrogenation of CO.
27p thebadguys 08-06-2021 22 4 Download
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The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.
26p extraenglish 24-05-2021 25 2 Download
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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.
26p extraenglish 24-05-2021 18 3 Download
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objectives: To identify the state of heavy metal pollution in water and food in two coastal communes of Thuy nguyen District, Haiphong city in 2017- 2018. To describe the pattern of disease and the risk due to exposure to heavy metal contamination among community residents in the study area.
27p extraenglish 24-05-2021 21 4 Download
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Summary of Environmental engineering doctoral thesis: Investigation of activated carbon denaturation in order to create material for treatment of several hazard ions in water environment
26p capheviahe27 23-02-2021 26 6 Download
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Objectives of this dissertation: Develop the optimal preparation procedure of modified biochar and activated carbon derived from an agricultural byproduct, such as corncob wastes; Investigate the physical and chemical properties of modified biochar and activated carbon; apply modified biochar and activated carbon in removal of ammonium from synthesised and real water under batch and column experiments.
28p capheviahe27 23-02-2021 18 3 Download
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This study aims to provide basic knowledge of carbon storage capacity and communities characteristics of seagrass beds in some typical coastal lagoons in the central of Vietnam. These important knowledges will be applied to activities of conservation, caculation of the carbon market, and reducing CO2 emissions in the future in Vietnam.
31p larachdumlanat129 20-01-2021 18 3 Download
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The application of the catalysts to photocatalytic degradation of methylene blue (MB) was tested under visible light irradiation. From photocatalytic result, we found that all Zn2SnO4/CNTs composite catalysts exhibit higher MB degradation activity than add Zn2SnO4.
6p tamynhan8 04-11-2020 7 1 Download
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In this study, the adsorption kinetics and equilibrium of methylene blue from aqueous solution onto activated carbon derived from coffee husk using one step ZnCl2 activation were investigated. The influence of initial methylene blue concentration and temperature were evaluated employing the batch experiment. To the experimental data, different kinetics and isotherm models were applied, finding that the best fitted is the pseudo-second-order equation and the Redlich-Peterson model, respectively.
14p koxih_kothogmih5 04-09-2020 18 1 Download
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The complexation activity of NADO with various metal ions in an ethanolic solution is specifically studied by means of fluorescent spectra. The NADO exhibits a significant fluorescence enhancement at 469 nm in presence of Al3 þ due to the formation of a complex.
8p tamynhan4 06-09-2020 8 1 Download
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In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)aS composite materials.
7p tamynhan4 06-09-2020 7 1 Download