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Guodong Wang

Bio: Guodong Wang is an academic researcher from Tianjin University. The author has contributed to research in topics: Zeolite & Copper. The author has an hindex of 3, co-authored 6 publications receiving 39 citations.

Papers
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Journal ArticleDOI
Yong Liu1, Guodong Wang1, Wang Lu1, Xianlong Li1, Qiong Luo1, Ping Na1 
TL;DR: In this paper, the second-order exchange secondorder saturation model (SESSM) and first-order empirical kinetic model (FEKM) were used to fit the equilibrium concentration of copper and nickel ions under certain conditions.

30 citations

Journal ArticleDOI
Yong Liu1, Qiong Luo1, Guodong Wang1, Xianlong Li1, Ping Na1 
23 May 2018
TL;DR: In this paper, the effects of calcination and acid treatment on the removal of impurities in fly ash were studied, and the results indicated that calcination at 750 °C for 1.5 h can basically remove unburned carbon from FA, and 4 M hydrochloric acid treatment of calcined FA at 90°C for 2 h will reduce the quality of about 34.3%wt, which are mainly iron, calcium and sulfur elements.
Abstract: Fly ash (FA) from coal-based thermal power plant was used to synthesize zeolite in NaOH solution with hydrothermal method in this work. Firstly, the effects of calcination and acid treatment on the removal of impurities in fly ash were studied. Then based on the pretreated FA, the effects of alkali concentration, reaction temperature and Si/Al ratio on the synthesis of zeolite were studied in detail. The mineralogy, morphology, thermal behavior, infrared spectrum and specific surface for the synthetic sample were investigated. The results indicated that calcination at 750 °C for 1.5 h can basically remove unburned carbon from FA, and 4 M hydrochloric acid treatment of calcined FA at 90 °C for 2 h will reduce the quality of about 34.3%wt, which are mainly iron, calcium and sulfur elements. The concentration of NaOH, reaction temperature and Si/Al ratio have important effect on the synthesis of zeolite. In this study, 0.5 M NaOH cannot obtain any zeolite. High temperature is beneficial to zeolite synthesis from FA, but easily lead to a variety of zeolites. The synthetic sample contains three kinds of zeolites such as zeolite P, sodalite and zeolite X, when the reaction conditions are 2 M NaOH and 120 °C for 24 h. In this research, quartz always exists in the synthetic sample, but will reduce with the increase of temperature. The synthetic zeolite has the specific surface area of about 42 m2 g−1 and better thermal stability.

13 citations

Patent
04 May 2018
TL;DR: In this paper, a method for controlling the vacuum evaporation mass of the sodium chloride aqueous solution provided by the invention uses a numerical method to carry out design calculation mainly according to a novel evaporic model and a temperature difference model, so as to achieve the purpose of accurately controlling the water evapsoration mass in the vacuum-evaporation process of a sodium chloride annealing process.
Abstract: The invention relates to a method for controlling the intermittent vacuum evaporation mass of a sodium chloride aqueous solution, which is mainly applied to the intermittent vacuum evaporation and concentration of the sodium chloride aqueous solution as well as crystallization process design, computer simulation and process control thereof, and belongs to the field of chemistry and chemical engineering evaporation and crystallization. The method for controlling the vacuum evaporation mass of the sodium chloride aqueous solution provided by the invention uses a numerical method to carry out design calculation mainly according to a novel evaporation model and a temperature difference model, so as to achieve the purpose of accurately controlling the water evaporation mass in the vacuum evaporation process of the sodium chloride aqueous solution; the method for controlling the intermittent vacuum evaporation mass of the sodium chloride aqueous solution has wide laboratory and industrial application prospect, is beneficial to the design and control of the evaporation, concentration and crystallization process of the sodium chloride aqueous solution, can be applied to the processes of waste water desalination, sea water desalination and sodium chloride industrial crystallization, and is in favor of the promotion of the technological level in the environmental protection and resourcerecycling and utilizing in China.
Patent
14 Sep 2018
TL;DR: In this article, an extraction and purification method of sludge compost fulvic acid is proposed. But the method is not suitable for the use of solvents as an eluting solution.
Abstract: The invention relates to an extraction and purification method of sludge compost fulvic acid. The extraction and purification method is a method for extracting from the sludge compost fulvic acid andpurifying fulvic acid by utilizing XAD-8 type macroporous resin. The extraction and purification method comprises the following steps: drying aged compost by air and grinding to obtain a raw materialfor extracting fulvic acid; adding acidic and alkaline extracting solutions into the compost in sequence according to a certain solid-liquid ratio; heating and stirring; centrifuging and separating toobtain a fulvic acid solution; feeding the fulvic acid solution onto an XAD-8 type macroporous resin column; then eluting salt remained in the column with distilled water; eluting fulvic acid adsorbed by the macroporous resin by taking an organic solvent as an eluting solution; obtaining a fulvic acid solid substance by adopting a vacuum drying method, wherein the content of organic elements C, H, N, S and O in a purified fulvic acid sample is 46.83 percent, 5.39 percent, 6.35 percent, 0.94 percent and 34.74 percent respectively, and other impurities mainly comprise Cl, Fe and Ca which have the content of 4.0 percent, 2.47 percent and 0.22 percent respectively.

Cited by
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Journal ArticleDOI
TL;DR: In this article, a review study of existing literature on the utilization of FA-based adsorbent for the removal of heavy metals (HMs) and dyes from wastewater is presented.
Abstract: A critical global issue in the 21st century is water shortage, as well as its pollution with noxious metal ions and organic dyes. To extract these pollutants from wastewater, a variety of traditional methods have been employed but they lack reusability/recyclability, are expensive, environmentally unfriendly, unsafe and the remediation process takes a long time. Therefore, to treat these contaminants, nanotechnology (NT) has recently been granted several leeways in terms of making the desirable nanomaterials (NMs) with high surface-to-volume ratios and special surface functionalities. In particular, fly ash (FA) has stood out as one of the greatest exciting new-found affordable and high efficient materials for water decontamination owing to its high porosity, huge surface area, and exceptional features. Hence, this present review study will attempt to compile data from existing literature on the utilization of FA-based adsorbent for the removal of heavy metals (HMs) and dyes from wastewater. Based on the reviewed publications, Langmuir's isotherm models (LIMs) and Freundlich's isotherm models (FIMs) best described the sorption process thus signalling monolayer and multi-layer sorptions. Pseudo-second-order (PSO) model provided the best appropriate means in elucidating the kinetic process and both exothermic and endothermic processes revealed the nature of the thermodynamic process during sorption. Some recommendations in the form of future prospects on how to advance the capacity of the adsorption and effectiveness of FA on the removal of HMs, dyes and other environmental contaminants using innovative technologies such as the nanofiber technology is also been proposed.

77 citations

Journal ArticleDOI
TL;DR: In this article, the authors discussed the chemistry and toxicity of hexavalent chromium (Cr) and divalent Ni (Ni(II) and have brought together all the possible methods that can be effectively exploited for the treatment of Cr(VI) and Ni(II)-contaminated water.

67 citations

Journal ArticleDOI
TL;DR: In this article, a clean and sustainable procedure to synthesize low-cost zeolites from sugarcane bagasse fly ash (BFA), an industrial waste, is presented.

62 citations

Journal ArticleDOI
Yu-Hua Wu1, Yu-Long Ma1, Yong-gang Sun1, Kai Xue1, Qiao-Ling Ma1, Ting Ma1, Wen-Xin Ji1 
TL;DR: In this article, the authors developed a new strategy to graded synthesis of MCM-41 and carbon/zeolite composite from coal gasification fine residue (CGFR) under mild conditions.

42 citations

Journal ArticleDOI
Xiaoqin Pu1, Lu Yao1, Lin Yang1, Wenju Jiang1, Xia Jiang1 
TL;DR: In this paper, an industrial waste, lithium-silicon-powder, was used as a raw material to produce NaP zeolite (PZ) via a one-stephydrothermal method.

37 citations