tailieunhanh - Kinetic and equilibrium study on the adsorption of methylene blue from aqueous solution onto coffee husk activated carbon (Hnue Journal Of Science)

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. | HNUE JOURNAL OF SCIENCE DOI Natural Sciences 2020 Volume 65 Issue 6 pp. 116-129 This paper is available online at http KINETIC AND EQUILIBRIUM STUDY ON THE ADSORPTION OF METHYLENE BLUE FROM AQUEOUS SOLUTION ONTO COFFEE HUSK ACTIVATED CARBON Ta Huu Son1 Le Van Khu1 Luong Thi Thu Thuy1 Vu Thi Huong1 Le Huu Dung1 and Nguyen Dinh Hung2 1 Faculty of Chemistry Hanoi National University of Education 2 Vinh Phuc Gifted High School Abstract. 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. The mechanism of the adsorption was examined using the Weber and Morris model and the obtained results suggested that the intra-particle diffusion was not the only rate-controlling step. The scale-up system was also designed for 50 - 90 methylene blue removal from an initial concentration of 100 mg L 1 at 30 C. Keywords activated carbon methylene blue adsorption kinetics equilibrium of adsorption. 1. Introduction Currently water pollution with organic compounds is becoming an increasing concern issue by scientists and society. Dyes are used in many industries for dyeing printing painting food coloring and reported to cause eye burn vomiting cyanosis jaundice cancer allergy mutation etc. Numerous techniques including biological treatment adsorption filtration coagulation photodegradation etc are being developed. Among these methods adsorption is a non-toxic cost-effectiveness approach especially at low adsorbate concentration or large scale applications 1 . Various adsorbents have been used for dye .

• Hoá học
• Activated carbon
• Methylene blue
• Adsorption kinetics
• Equilibrium of adsorptiona
• Coffee husk activated carbon
• Aqueous solution
• Vietnam Journal of Science and Technology
• Synthesis of activated carbon supported Mno2
• Characterization of activated carbon supported Mno2
• Electrochemical performance of activated carbon supported Mno2
• Activated carbon supported Mno2 for electrochemical capacitor
• Durian peel based activated carbon preparation conditions for dye removal
• Activated carbon preparation conditions
• Durian peel activated carbon
• Methylene blue from synthetic effluents
• The activated carbons
• Journal of Chemistry
• Packaged supercapacitors
• Pt modified activated carbons
• Characteristics of metal activated carbon composites
• The carbonization and activation processes
• Rice husk activated carbon
• The adsorption capacity of iodine
• Activated carbon and adsorption capacity
• Investigation of activated carbon adsorbent electrode for electrosorption
• Uranium extraction from seawater
• Activated carbon adsorbent electrode
• Changing positive potentials
• The engineering feasibility examination
• Adsorbed Zn2+
• Coal chemistry activated carbon
• Zinc metal processing capability
• Zinc metal in wastewater
• Adsorbed Cu2+
• H3PO4 activating agent
• Activated macadamia carbon
• Aqueous solutions by adsorption
• Removal of copper (Cu 2+) ions
• Activated carbon aerogel
• Crystal violet
• KOH activated carbon aerogel
• Facile hydrothermal treatment synthesized core
• Absorb crystal violet
• Environmental advances
• Carbon mass balance model
• Carbon amendment
• Stable isotope labeled toluene
• Stable isotope
• Enhancing phenol removal
• The lab scale activated sludge system
• Conventional activated sludge
• Enhance phenol removal
• Hybrid activated sludge process
• Chemical sciences
• Biological sciences
• Chromium ion
• Adsorption of Cr(VI)
• Activated carbon cloth
• Oxidized activated carbon
• Sulfur dioxide
• Carbon monoxide
• Transition metal oxide
• Selective catalytic
• Bài viết nghiên cứu khoa học
• Carbon dioxide
• DFT calculations
• DFT D calculations
• Computational methods
• Grand canonical ensemble Monte Carlo
• Activated carbon adsorbents
• Activated carbon modification
• CO2 adsorption isotherms
• Biogas purification
• Pressure swing adsorption
• Physical activation
• Box Behnken
• Electro catalyst
• Carbon paste electrode
• Advanced materials and devices
• Turkish Journal of Chemistry
• Tạp chí Hóa học
• Dimethyl disulfide
• Carbon oxygen surface groups
• Metal processing
• Macadamite activated by H3PO4
• Zn2+ heavy metal handling ability
• Capable of handling Zn2+ best
• Cu heavy metals
• Macadamia coal activated by K2CO3
• Removal of Cu2+ In sewage
• Textile dyeing wastewater
• Rice husk ash
• Agriculture waste
• Aqueous solution onto activated rice husk
• tài liệu báo cáo nghiên cứu khoa học
• cách trình bày báo cáo
• kiến thức vật lý
• báo cáo vật lý
• các nghiên cứu vật lý
• Handling ammonia contaminated air stream
• Activated carbon materials
• Coconut fiber and peanut husk
• Journal of Science and Technology
• Activated carbon from sugarcane bagasse using Zncl2
• The removal of Cu (ii) ion from aqueous solution
• Response surface methodolog
• The synthesized ACs
• Macadamia nut shells
• MB absorption
• Than hoạt tính
• Vỏ Mắc ca
• Hấp phụ màu Methylen Blue