scholarly journals Research application coal material is prepared from maccadamia peel and denatured by H2O2 to treat methylene blue

2020 ◽  
Vol 3 (2) ◽  
pp. 96-104
Author(s):  
Dao Minh Trung
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Treatment Time ◽  
Blue Color ◽  
Optimal Conditions ◽  
Research Application ◽  
Research Results ◽  
Color Treatment ◽  
H2o2 Oxidation

Macadamia shell contains a carbon content (47 - 49%), in addition, the shell contains 46.52% Oxidation, Hidro 6.10%, Nitrogen 0.36% and relatively low ash content of only 0.22%, this indicates the grain Macadamia has the potential to become activated carbon thanks to the above characteristics. This study was conducted to modify activated carbon by oxidizing agents to change the surface structure of activated carbon from hydrophobic to hydrophilic, non-polarizing to polarization, increasing the amount of adsorption simultaneously creating more durable links between dyes and activated carbon. Study of Methylene Blue wastewater treatment with coal from Maccadamia shell modified with H2O2 agent at H2O2 ratio : coal = 10:1. Research results show that Methylene Blue adsorption capacity reaches 1g /266,26mg Methylene Blue at optimal conditions corresponding to 25% concentration and 48 hours of soaking time. Analysis of infrared spectra showed that coal is modified by H2O2 agent with functional groups –OH, Carboxylic functional group C=O, group C-H in NH3, C–N group in Amine aliphatic or in Alcohol or Phenol and C–O bonding. Modified coal by H2O2 oxidation agent has Methylene Blue color treatment efficiency of 93.26%, corresponding to the original color of 474.67 Pt - Co at the respective optimal conditions pH = 8.5, dose of 1 g/L and treatment time of 60 minutes. Research results are similar to other research results and are applicable to color wastewater treatment.

Methylene orange handling of cock cake casted by H3PO4 chemicals

2019 ◽  
pp. 119-124
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Carbon Material ◽  
Optimal Conditions ◽  
Research Results ◽  
Methylene Orange ◽  
Color Treatment ◽  
Orange Color ◽  
Chemical Activator

Survey of methylene orange wastewater treatment by activated carbon material prepared from macadamia husk with chemical activator H3PO4 shows that coal with the best methylene orange color treatment is achieved Optimal conditions such as pH = 5, coal dose 0.9 g/L and time 120 minutes. The results show that it is applicable to color wastewater treatment and the results are similar to other research results.

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+.

scholarly journals Research application of K2CO3 activated coal coal and processing by HNO3 from cake shoulder to process Methylene Blue color

2020 ◽  
Vol 4 (1) ◽  
pp. First
Author(s):  
Dao Minh Trung
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Functional Groups ◽  
Carbon Surface ◽  
Cellulose Content ◽  
Blue Color ◽  
Surface Functional Groups ◽  
Research Application ◽  
Grain Processing ◽  
Activated Coal

Macadamia is a tree that produces dried fruits, with each ton of macadamia seeds producing 70 - 77% of the shell. Annually, the grain processing companies in Vietnam produce thousands of tons of seeds and release tens of thousands of tons of shells. As the demand for macadamia nuts is constantly increasing in the market, more in-depth studies are needed to handle this agricultural residue. Macadamia shell has a higher surface area than other seed pods and their ash content is very low at only 0.22%, the cellulose content in the shell is about 41.2%, this shows that Macadamia shell has the potential to prepare activated carbon when burning at high temperatures. The activated carbon surface can be modified appropriately to change adsorption characteristics, forming different types of surface functional groups (oxygen functional groups, carbon surface functional groups, carbon functional groups, carbon - nitrogen, carbon - halogen) and make coal more suitable for special applications. Results of researching to prepare bio-denatured material from activated carbon K2CO3 by chemical method using HNO3 agent with optimal denaturing conditions such as concentration of 21%, denaturation time of 12 hours, degree MB adsorption reached 193.13 mg/g. The results of methylene blue adsorption adsorption tests at the optimal conditions show that at pH = 9.5 with the appropriate dose of coal is 1g/L in 120 minutes, it can be processed to reach 79.36% efficiency for water. Methylene Blue waste is 70 mg/L.

scholarly journals Studying the preparation of activated carbon from macadamia nut shells by chemical activation with NAOH in Methylene Blue treatment application

2019 ◽  
Vol 15 (3) ◽  
pp. 89
Author(s):  
Doan Nguyen Hoang Anh ◽  
Pham Mai Ly ◽  
Dao Minh Trung
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Research Result ◽  
Textile Wastewater ◽  
Optimum Temperature ◽  
Macadamia Nut ◽  
Color Treatment ◽  
Treatment Application

Study on preparation of activated carbons by chemical activation with NaOH using the impregnatio ratio of 3:1 (NaOH:char) from Macadamia nut shell in terms on temperature and time. The research result showed that Methylene Blue (MB) absorption at optimum temperature and time of 300oC and 90 minutes was 205,68 mg and the removal efficiency was 97,59% corresponding to the color reduction from 349,67 Pt-Co to 8,4 Pt-Co. This results showed that activated carbons prepared from Maccadia nut shells and chemical activation with NaOH had the capable of color treatment in textile wastewater.

Removal of methylene blue from aqueous solution using high performance calcium alginate/activated carbon membrane

2019 ◽  
Vol 32 (3) ◽  
pp. 307-321 ◽  
Author(s):  
Xiaoping Zhang ◽  
Yanhui Li ◽  
Meixiu Li ◽  
Heng Zheng ◽  
Qiuju Du ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Composite Membrane ◽  
Calcium Alginate ◽  
Dyeing Wastewater ◽  
Carbon Membrane ◽  
Content Type ◽  
Printing And Dyeing Wastewater ◽  
New Ideas

Purpose The purpose of this paper is to purify the wastewater in the garment industry. Design/methodology/approach The preparation of the calcium alginate (CA)/activated carbon (AC) composite membrane was achieved by vacuum freeze-drying and the cross-linking reaction between sodium alginate and CaCl2. Effective parameters in the methylene blue (MB) adsorption such as temperature, dose, contact time and pH were discussed. The adsorption properties of the composite membrane were investigated by isotherm, kinetics and thermodynamic analysis. The adsorption equilibrium data were described by the adsorption isotherm Langmuir model and the Freundlich model. The pseudo-first-order, pseudo-second-order and intra-particle diffusion equations were selected to evaluate the kinetics. The thermodynamic study described that the adsorption reaction was spontaneous and exothermic. Findings The AC/CA membrane is an efficient and powerful adsorbent to remove MB in printing and dyeing wastewater, and provides a new idea for the selection of adsorption materials for industrial printing and dyeing wastewater. Practical implications The composite membrane research on CA and AC can provide new ideas for the research of these kinds of materials. Social implications The paper contributes to its wider and convenientapplication in wastewater treatment. Originality/value Studies on the combination of CA and AC into adsorption membranes and for the removal of dyes from printing and dyeing wastewater have not been reported. A novel composite material is provided for treatment dyeing wastewater in garment production. The composite membrane research on CA and AC can provide new ideas for the research of these kinds of materials and contribute to its wider and convenient application in wastewater treatment.

Highly Efficient Regeneration Method for Analginum-Saturated Activated Carbon

2013 ◽  
Vol 781-784 ◽  
pp. 2071-2075
Author(s):  
Zhao You Zhu ◽  
Wan Ling Wang ◽  
Li Li Wang ◽  
Ying Long Wang
Keyword(s):  
Activated Carbon ◽  
Solvent Extraction ◽  
Treatment Time ◽  
Activated Carbons ◽  
Influence Factors ◽  
Optimal Conditions ◽  
Thermal Regeneration ◽  
Extraction Step ◽  
Efficient Regeneration ◽  
Optimized Conditions

The regeneration of Analginum-saturated powdered activated carbon (PAC) using solvent extraction and thermal regeneration was investigated in detail to get the optimal conditions. In the solvent extraction step, various influence factors, such as pH of solvent, treatment time, and temperature were studied respectively. In addition, the optimal conditions of thermal regeneration were determined to be 500 °C, 120 min, with blowing N2 gas at 80 mL/min. Under the optimized conditions, the regeneration efficiency of spent PAC reached as high as 95.1%. This study provides a useful reference of regeneration method for other spent activated carbons.

CuO Nanowhiskers-Based Photocatalysts for Wastewater Treatment

2017 ◽  
Vol 13 ◽  
pp. 183-189 ◽  
Author(s):  
Andrey Yu. Kozlov ◽  
Maksim V. Dorogov ◽  
Natalya V. Chirkunova ◽  
Ilya M. Sosnin ◽  
Anatolii A. Vikarchuk ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Copper Oxide ◽  
Organic Pollutant ◽  
Organic Pollution ◽  
Photocatalytic Properties ◽  
Research Results

This article described the photocatalysts for wastewater treatment based on copper oxide (II). Research results of CuO nanowhiskers photocatalytic properties are showedand a series of nanowhiskers tests on organic pollutant (methylene blue)are given. It is shown that the copper oxide nanowhiskers able to purify water from organic pollution.

Microstructure of Activated Carbon Particles Coated on High Density Polyethylene (HDPE) for Wastewater Treatment Application

2015 ◽  
Vol 1134 ◽  
pp. 88-95
Author(s):  
Khaled Shahot ◽  
Azni Idris ◽  
Zulkifli Rosli ◽  
Rozita Omar ◽  
Hamdan Yusoff ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
High Density Polyethylene ◽  
High Surface ◽  
High Density ◽  
High Porosity ◽  
Carbon Particles ◽  
Epoxy Material ◽  
Activated Carbon Particles

This research aims to study the effect of activated carbon particles in adsorption of the methylene blue as a replacement of wastewater treatment when coated on a high density polyethylene (HDPE) substrate (e.g. flat sheet and cosmo ball substrates). Prior to coating, the activated carbon has been cleaned using tab water to remove ashes which blocks the activated carbon pores. Coating was done by applying epoxy material using brushing technique, and then sprayed the activated carbon on epoxy either manually or using spray machine. The thickness and morphological of the coatings were characterized using Scanning Electron Microscopy (SEM). Analyses conducted have confirmed that granuler activated carbon coating layers ranged between 100 to 500 μm have been successfully deposited on different shapes of HDPE substrates. The coatings deposited on HDPE substrate produced high surface roughness of around 7 μm. The ability of the coated samples in removing the colour of methylene blue is believed due to the high porosity of the activated carbon(AC). The surface area has been increased dramatically if compared with uncoated substrate since the BET of activated carbon is 426 m2/g .

Characterization and adsorption properties of La and Fe modified activated carbon for dye wastewater treatment

2017 ◽  
Vol 6 (5) ◽  
Author(s):  
Song Cheng ◽  
Libo Zhang ◽  
Hongying Xia ◽  
Jinhui Peng
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Adsorption Properties ◽  
Lanthanum Nitrate ◽  
Ferric Nitrate ◽  
Mixed Solution ◽  
Dye Wastewater ◽  
Modified Activated Carbon

AbstractAn effective adsorbent (Fe-La-AC) was synthesized by impregnating mixed solution ferric nitrate and lanthanum nitrate with activated carbon and heated by microwave to remove methylene blue (MB) from dye wastewater. The Fe-La-AC was characterized by N

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