scholarly journals Survey of zinc metal processing capability with coal-chemistry activated carbon by chemical K2CO3

2019 ◽  
pp. 133-138
Keyword(s):  
Activated Carbon ◽  
Seed Coat ◽  
Chemical Agent ◽  
Distilled Water ◽  
Burning Time ◽  
Optimal Temperature ◽  
Coal Chemistry ◽  
Survey Results ◽  
Metal Processing ◽  
Optimal Temperature Condition

Seed coat macadamia preparation of activated carbon with chemical agent K2CO3 from macadamia shells as per ratio: K2CO3: distilled water = 1:1:10ml, optimal temperature condition 6500C and burning time 60 minutes. Efficiency removal of zinc (II) in wastewater efficiency (53.42%) with the concentration of 25ppm, conducted a survey at pH = 4.5 with 1.8g/l of carbon, treated in 100 minutes. Survey results have similarities with other studies and are applicable to application removal of zinc (II) in wastewater.

Removal of copper (Cu2+) ions from aqueous solutions by adsorption on activated macadamia carbon using H3PO4 activating agent

2020 ◽  
pp. 166-172
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Chemical Agent ◽  
Burning Time ◽  
Optimal Conditions ◽  
Optimal Temperature ◽  
Copper Metal ◽  
Activating Agent ◽  
Optimal Temperature Condition

The study aims to investigate the possibility of processing copper metal (Cu2+) with activated carbon prepared from macadamia shell. Activated carbon is prepared from Macadamia shell by chemical agent H3PO4 with coke ratio: H3PO4 = 1:1, optimal temperature condition is 5000C and burning time is 60 minutes. Using the assumed Cu2+ metal treats materials in the laboratory with a concentration of 30ppm. The research to result ability material adsorbed Cu2+ metal achieve good performance 95.92% handle, corresponding to the concentration of Cu2+ reduced from 30 mg/l to 1.2mg/l in optimal conditions is pH = 4.5 , dosage 1.8g/l, time 30 minutes. The results showed that activated carbon prepared from macadamia husk with chemical agent H3PO4 was capable of treating copper metal in wastewater.

Removal of Cu2+ In sewage with macadamia coal activated by K2CO3

2020 ◽  
pp. 180-186
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Carbon Material ◽  
Burning Time ◽  
Optimal Conditions ◽  
Research Results ◽  
Survey Results

Investigation of the possibility of treating wastewater containing Cu2+ heavy metal with activated carbon material prepared from macadamia husk with activating K2CO3 in Optimal conditions such as temperature 6500C and burning time is 60 minutes. Survey results show that coal with the ability to handle heavy metals is best at 84.02% in optimal conditions such as pH=5 and time. Baking is 30 minutes. The results show similarities with other research results and are applicable to wastewater treatment Cu2+.

Test Study on Combined Process of Clarification-Adsorption-Membrane Separation for Chemical Agent VX Polluted Surface Water Treatment

2013 ◽  
Vol 750-752 ◽  
pp. 1457-1460
Author(s):  
Xiao Jie Wang ◽  
Hong Wei Zhang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Surface Water ◽  
Membrane Separation ◽  
Chemical Agent ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Surface Water Treatment ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Test Study

t developed test devices and carried out test adopting combined process ofclarification-adsorption-membrane separationtargeted at surface water which was polluted by chemical agent VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also researched on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the combined process can remove effectively simulation agent in water and the outlet quality complies with requirements of relevant standards.

A Technique Method of Recycling Sylvite Zinc Plating Waste Liquid in Laboratory

2014 ◽  
Vol 556-562 ◽  
pp. 290-293
Author(s):  
Lei Shi ◽  
Da Yong Li
Keyword(s):  
Hydrogen Peroxide ◽  
Heavy Metal ◽  
Organic Matter ◽  
Activated Carbon ◽  
Heavy Metal Ions ◽  
Distilled Water ◽  
Comprehensive Utilization ◽  
Zinc Plating ◽  
Metal Element ◽  
Heavy Metal Element

It introduces a kind of technique method that recycling sylvite zinc plating waste liquid laboratory, involving the fields in electroplating and comprehensive utilization of waste liquid. It includes the following steps: first add hydrogen peroxide and activated carbon into waste liquid to remove the organic matter in it, and then reduce the solution’s temperature with refrigeration film, and filter out the solid contents. Add NaOH solid, NaHSO3 into the solution, through chemical reactions, precipitate the heavy metal element, and finally get distilled water through distillation. It can make the recycled materials be reused, such as distilled water, boric acid, etc., and as to nonrecyclables, such as heavy metal ions (Cu2+, Cr3+), bury them deep that disposing harmless.

scholarly journals Clarification of Reprocessed Syrup and Use in the Formulation of Lollipop-Type Hard Candies

2020 ◽  
Vol 10 (6) ◽  
pp. 6846-6864
Keyword(s):  
Experimental Data ◽  
Activated Carbon ◽  
Sucrose Solution ◽  
Freundlich Isotherm ◽  
Adsorptive Capacity ◽  
Suitable Model ◽  
Distilled Water ◽  
Visual Evaluation ◽  
Freundlich Isotherms ◽  
Langmuir And Freundlich Isotherms

The objective was to evaluate the removal of dye using activated carbon, and apply the best condition in the removal of candy reprocessing syrup pigment, as well as to evaluate its influence in the visual aspect of a lollipop. Adsorption capacity tests were performed with the dye diluted with and without sucrose, and from the data, the linearization of the Langmuir and Freundlich isotherms were calculated. The lollipop was prepared with syrup treated with activated carbon and visually evaluated using a panel of untrained tasters. The Freundlich isotherm adjusted more appropriately to the experimental data of the adsorption of the dye diluted in distilled water, while for the dye diluted in sucrose solution, the most suitable model was Langmuir's. The experimental design condition showed the highest adsorptive capacity (26.91 mg.g-1) for the dye diluted in the aqueous solution was at a temperature of 60 ºC and pH 5.5, while for the sucrose-diluted dye solution, was 103.09 mg.g-1, under the same conditions. The visual evaluation of the lollipop indicated the possibility of adding up to 15% of reprocessing syrup. Thus, the use of activated carbon is an alternative to remove the coloring from candy syrup and enable its reuse within the industry.

The Technique of Recycling Alkaline Zincate Zinc Plating Waste Liquid in Laboratory

2014 ◽  
Vol 556-562 ◽  
pp. 580-583
Author(s):  
Da Yong Li ◽  
Lei Shi
Keyword(s):  
Zinc Oxide ◽  
Activated Carbon ◽  
Diethyl Ester ◽  
Distilled Water ◽  
Test Paper ◽  
Comprehensive Utilization ◽  
Zinc Plating

It introduces a kind of technique method that recycling alkaline zincate zinc plating waste liquid in laboratory, involving the fields in electroplating and comprehensive utilization of waste liquid. This method is introduced that with adopting materials such as HCl, NaOH, H2O2, activated carbon, dithiocarbamate diethyl ester, chloroform, ammonia and baking furnace, incinerator, pH test paper, for treatment of the waste liquid through some processes like neutralization, filtration, chemistry precipitation, extraction, distillation, burning, so that some recycled substances in it can be reused such as distilled water, zinc oxide, and as to those can not be recycled, carry on the harmlessization handle by incineration or deep bury.

A new seed coat water-impermeability mechanism in Chaetostoma armatum (Melastomataceae): evolutionary and biogeographical implications of physiophysical dormancy

2015 ◽  
Vol 25 (2) ◽  
pp. 194-202 ◽  
Author(s):  
Rafaella C. Ribeiro ◽  
Denise M.T. Oliveira ◽  
Fernando A.O. Silveira
Keyword(s):  
Phenolic Compounds ◽  
Seed Coat ◽  
Seed Weight ◽  
Significant Fraction ◽  
Distilled Water ◽  
Physical Dormancy ◽  
First Report ◽  
Germination Ecology ◽  
Impermeable Seed Coat ◽  
Structure Water

AbstractDetermining the phylogenetic and biogeographic distribution of physical dormancy remains a major challenge in germination ecology. Here, our goal was to describe a novel water-impermeable seed coat mechanism causing physical dormancy (PY) in the seeds of Chaetostoma armatum (Melastomataceae). Although seed coat permeability tests indicated a significant increase in seed weight after soaking in distilled water, anatomical and dye-tracking analyses showed that both water and dyes penetrated the seed coat but not the embryo, which remained in a dry state. The water and dye penetrated the lumen of the exotestal cells, which have a thin outer periclinal face and thickened secondary walls with U-shaped phenolic compounds. Because of this structure, water and dye do not penetrate the inner periclinal face of the exotestal cells, indicating PY. Puncturing the seeds increased germination more than tenfold compared to that of the control, but GA3 did not increase germination further. A significant fraction of the seeds did not germinate after puncturing, indicating that embryos are also physiologically dormant (PD). This paper constitutes the first report of the water-impermeable seed coat in the Myrtales and the first report of physiophysical (PD+PY) dormancy in a shrub from a tropical montane area.

Preparation of Activated Carbon of Lignin from Straw Pulping by Chemical Activation Using Potassium Carbonate

2011 ◽  
Vol 704-705 ◽  
pp. 517-522 ◽  
Author(s):  
Xiao Juan Jin ◽  
Zhi Ming Yu ◽  
Gao Jiang Yan ◽  
Wu Yu
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Iodine Number ◽  
Surface Area ◽  
Potassium Carbonate ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Bet Surface Area ◽  
Chemical Agent ◽  
Optimum Conditions

Activated carbons were prepared through chemical activation of lignin from straw pulping precursor using potassium carbonate as the chemical agent. Effects of activated temperature, K2CO3/lignin ratio and the activated time on the yield, Iodine number of activated carbon were investigated. Experimental results indicated that the optimum conditions were as follow: activated temperature 800°C, K3CO3(40% concentration) /lignin ratio 5: l, activated time 50min. These conditions allowed us to obtain a BET surface area of 1104 m2/g, including the external or non-microporous surface of 417 m2/g，Amount of methylene blue adsorption, Iodine number and the yield of activated carbon prepared under optimum conditions were 10.6mL/0.lg,1310 mg/g and 19.75%, respectively.

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