The current study investigates the role of Phoenix Dactylifera L. (date palm) seeds as an effective biosorbent for removing Zn ⁺², a toxic heavy metal pollutant usually found in the waste ...
DetailsTherefore, the best level for the four factors is as follows: temperature was 80 °C, the reaction time was 30 min, pH was 8, and the molar ratio of Fe/As was 8, since the min ( overline{K}_{ij} ) was (A 4 B 2 C 2 D 3).Meanwhile, a larger R j means the factor has a bigger impact on the removal of arsenic. In Table 4, the decreasing order R B > R …
DetailsSince RSM can be employed for process parameters modeling and optimization, it is widely applied in wastewater treatment process in order to achieve the desired goals especially for enhancement of ...
DetailsRequest PDF | High surface area mesoporous activated carbon from tomato processing solid waste by zinc chloride activation: Process optimization, characterization and dyes adsorption | The aim of ...
DetailsMany process have been developed for recovery of zinc, or other metals from leaching residue in zinc hydrometallurgy. The present process deals with recovery of zinc from leaching residue which ...
DetailsThis chapter gives a short review on the application of modern advanced automation and optimization methods to improve metallurgical process plant operations and in specific …
DetailsAn efficient chlorination roasting process for recovering zinc (Zn) and lead (Pb) from copper smelting slag was proposed. Thermodynamic models were established, …
DetailsToday, the Waelz process using a rotary kiln is the best technology available for the pyro-metallurgical treatment of zinc-bearing residues. However, this process will only result in a good zinc ...
DetailsThe process optimization of the microwave induced zinc recovery from the spent catalyst of vinyl acetate process has not been reported in literature. Hence the present work intends to assess the effects of variables such as ammonia concentration, leaching time and liquid/solid ratio to identify the optimum conditions using a central …
DetailsThe goal of the research is an attempt of optimization of the hydrometallurgy-based zinc production line, consisting of three stages: mixing of raw materials, oxidative roasting …
DetailsConsidering the uncertainty of zinc concentrates and the shortage of high-quality ore inventory, a multi-objective chance-constrained programming (MOCCP) is established …
DetailsThe leaching conditions using citric acid were optimized and the leaching kinetics of Zn and Mn in citric acid solution was investigated. The leaching of 89.62% Zn and 63.26% Mn …
DetailsProcess Parameter Optimization for Zinc Coating. Weight Control in Continuous Galvanizing Line. Akhil P Deote1, Dr. M. M. Gupta2, Prof. D. R. Zanwar3. Abstract - The continuous hot dip galvanizing line is mainly dedicated to the production of galvanized corrugated & plain coils for the market. The process combines of 3 stages: metallurgical ...
DetailsThe presented configuration can be applied as a novel approach for process evaluation and optimization through the downdraft biomass gasification integrated with water-gas …
DetailsOver-coating of the zinc layer in the hot-dip galvanization process is a common issue. The coating thickness of zinc depends on various factors such as zinc bath temperature, dipping time, silicon percentage in steel, alloy composition in zinc bath, etc. In the current work, three factors: dipping time, silicon percentage in steel, and nickel percentage in …
DetailsThe zinc oxide dust after crushing was characterized by XRD, and the results are shown in Fig. 2.From Fig. 2, it can be seen that the main phases in zinc oxide dust are zinc oxide, zinc sulfide, etc.According to Table 1, the content of silicon and iron in zinc oxide dust is high, and germanium in minerals often exists in the form of complex oxides …
DetailsSemantic Scholar extracted view of "Magnetically recoverable Mg substituted zinc ferrite nanocatalyst for biodiesel production: Process optimization, kinetic and thermodynamic analysis" by A. Ashok et al.
DetailsThe preparation process of Antarctic krill peptides-zinc chelate was optimized. • Chelating sites were carboxyl oxygen and amino nitrogen atoms of the peptides. • Differences of …
DetailsAn efficient chlorination roasting process for recovering zinc (Zn) and lead (Pb) from copper smelting slag was proposed. Thermodynamic models were established, illustrating that Zn and Pb in ...
DetailsProcess optimization and kinetics of biodiesel production from neem oil using copper doped zinc oxide heterogeneous nanocatalyst. ... The heterogeneous solid copper-doped zinc oxide nanocatalyst synthesized by chemical co-precipitation was found to be effective for the production of biodiesel from neem oil. The AFM characterization of ...
DetailsRequest PDF | Experimental and theoretical evaluation of zinc recovery from zinc oxide ore: process optimization and simulation using Aspen Plus software | In the present study, the production ...
DetailsIn this study, a process was developed to convert a local copper flue dust containing 20.60% copper, 21% iron and 2.88% zinc into value-added products via a hydrometallurgical route. The response surface methodology was applied for the optimization of base metals leaching by sulfuric acid.
DetailsExperience with Digital Process Optimization of Zinc Roasting Plants Robert Schiemann, Steffen Haus, Marcus Runkel and Jörg Hammerschmidt Abstract Operation of zinc roasting plants has always been a challenge for chang- ing …
DetailsOperation of zinc roasting plants has always been a challenge for changing feed mixtures and difficult concentrate qualities. Especially very fine particle sizes and increased amount of impurities like Pb and Cu require a higher attention of the control room operator to run the plant in stable conditions. As a result of this manual roasting plant control, the operation …
DetailsCPB is an exocrine protease, each of which contains an ion of zinc, which hydrolyzes the C-terminal residues of peptide chains, such as lysine, glycine or arginine. ... Li J. Automated dynamic fed-batch process and media optimization for high productivity cell culture process development. Biotechnol Bioeng. 2013; 110:191–205. [Google …
DetailsHigh purity zinc nitrate (Zn(NO 3) 2 6H 2 O), magnesium nitrate (Mg(NO 3) 2 4H 2 O) and ferric nitrate (Fe(NO 3) 3 9H 2 O), l-Arginine (used as fuel) and methanol were purchased from Merck, India and used without further purification.Waste cooking oil (WCO) was obtained from local restaurant and food markets in Chennai, India. WCO was …
DetailsAbstract In the present study, the production process of zinc sulfate from the zinc oxide ore was experimentally investigated. The effect of main operating condition such as weight ratio of sulfuric acid to zinc content of ore (H2SO4/zinc), leaching temperature (°C), stirring speed (rpm), leaching time (min), particle size (mm), solid to liquid ratio (pulp density, wt. …
DetailsAssessing the Potential of Biosurfactant Production by Bacillus subtilis MTCC 2423 to Remediate the Zinc-Contaminated Soil: A Process Optimization Approach. Research Article-Biological Sciences; Published ... 2.4 Box-Behnken Design (BBD) for Optimization of Process Parameter. BBD was carried out to optimize the independent …
DetailsIP3a-Zn may serve as a good source of zinc as a supplement and could be used as an antioxidant for the food industries. Abstract Zinc deficiency in human body has gradually become a major challenge to public health in modern society. In our previous work, a novel polysaccharide from Inonotus obliquus IP3a was successfully isolated and purified. The …
DetailsIn the present research, the removal of zinc from concentrated galvanic wastewater (pH 3.1, conductivity 20.31 mS/cm, salinity, 10.16 g/L, Chemical Oxygen Demand (COD) 2900 mg O2/L, Total Organic Carbon (TOC) 985 mg/L, zinc (Zn) 1534 mg/L and ethylenediaminetetraacetic acid (EDTA) 70 mg/L) by combination of lime …
DetailsThe results of this study indicates that Brassica napus is more suitable for phytoremediation of soils light polluted with Cd and Zn, while Triticales sp. In this paper, Cadmium and Zinc removal from soil by phytoremediation was investigated. The experiments were carried out with two types of plants, Brassica napus and Triticales sp. Response surface modeling …
DetailsProcess optimization and kinetics of biodiesel production from neem oil using copper doped zinc oxide heterogeneous nanocatalyst Bioresour. Technol., 190 ( 2015 Aug 1 ), pp. 424 - 428
DetailsPE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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