Antimicrobial activity and cellulose acetate membrane characterization with tangerine peel extract (Citrus reticulata) for bio packing

Biopacking material was obtained by incorporating tangerine peel extract (Citrus reticulata) in cellulose acetate (CA) film. The acetate film with tangerine extract was shown to have a homogeneous material characteristic by FTIR and DSC analysis, being reinforced in MEV and MFA, and showed absence of pores in the film with extract. These characteristics justify the reduced water absorption and release of the CA membrane extract. Low water absorption is important for the film to act as a barrier with external environment and the release of the extract was sufficient to prevent the growth of the strains investigated on the sample surface. The introduction of the extract also reduced the tensile strength and deformation of the film. This study showed the good potential of biomass for active bio packing that can gradually replace non-renewable packaging and take advantage of agricultural waste.

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Preparation and Characterization of Composite Cellulose Acetate/NaA Zeolite/Alumina Membrane and Its Application in Vetiver Oil’s Pervaporation

Jurnal Kimia VALENSI ◽

10.15408/jkv.v5i2.11698 ◽

2019 ◽

Vol 5 (2) ◽

pp. 169-176

Author(s):

Asep Hadian Hadinata ◽

Engela Evy Ernawati ◽

Agnes Rezky Siahaan

Keyword(s):

Mechanical Strength ◽

Cellulose Acetate ◽

Composite Membrane ◽

Agricultural Waste ◽

Cellulose Synthesis ◽

Alumina Membrane ◽

Naa Zeolite ◽

Swelling Degree ◽

Membrane Characterization ◽

Alumina Composite

Rice husk is an agricultural waste that contains cellulose. Risce husk’s cellulose can be converted to cellulose acetate. Cellulose acetate (CA) is widely used as membrane’s material for pervaporation. This material has high swelling degree that can influence its performance. The membrane’s performance can be improved by addition of minerals such zeolite and alumina. The purpose of this study was to determine the characteristics and the best composition of CA/NaA zeolite/alumina composite membrane (CA/Na/Al) for pervaporation of Vetiver oil. Methods that has been done were acetylation of rice husk’s cellulose, synthesis of composite membrane, characterization, and pervaporation of Vetiver oil. Focused characteristics of membrane were its swelling degree, mechanical strength, and its morphology. Composite CA/Na/Al membrane has lower swelling degree than CA/NaA membrane because the existence of alumina that fill CA matrix. The optimum mechanical strength was gained by adding 2% alumina to membrane. But, composite CA/Na/Al 3% membrane was the best composition due to its performance. Membrane performance including its flux and the percentage of vetiverol gained (Cp), with flux value 367.83 g.m-2.h-1 and Cp value 15.584%.

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Synthesis of Bio-Cellulose Acetate Membrane From Coconut Juice Residues for Carbon Dioxide Removal From Biogas in Membrane Unit

Frontiers in Energy Research ◽

10.3389/fenrg.2021.670904 ◽

2021 ◽

Vol 9 ◽

Author(s):

Attaso Khamwichit ◽

Sakkarin Wattanasit ◽

Wipawee Dechapanya

Keyword(s):

Cellulose Acetate ◽

Energy Demand ◽

Fossil Fuels ◽

Biogas Production ◽

Agricultural Waste ◽

Process Conditions ◽

Cellulose Acetate Membrane ◽

Operating Pressure ◽

Membrane Unit ◽

Separation Unit

The rapid growth of energy demand and consumption from fossil fuels has been of great concern since the last decade. Renewable energy, including biogas production from wastes, has been studied to ease up the energy crisis problems. This study aims to synthesize bio-cellulose acetate (CA) membranes from agricultural waste and to study its efficiency in the removal of CO2 from biogas. The bio-CA membranes were synthesized from acetylation of bacterial cellulose (BC) and obtained from coconut juice residues (CJRs). The results showed that both chemical and physical characteristics of the bio-CA membrane were compared with those of the chemical CA membranes. The CO2 removal capacity of the bio-CA membranes was tested in a membrane separation unit. The maximum CO2 selectivity of 29.53 was achieved when using the bio-CA membrane with a thickness of 0.05 mm under the feed pressure of 0.1 MPa. Thick CA membranes exhibited better CO2 selectivity performance, particularly at low operating pressure. However, the CO2/CH4 separation factor decreased in the high-pressure region, probably because of the plasticization of the gas components. Eco-efficiency was evaluated to determine the optimal process conditions. In terms of eco-efficiency, the results suggested that the optimal condition was a bio-CA membrane of 0.05-mm thickness and pressure of 0.1 MPa. The implication of this study is promoting a zero-waste environment in which the agricultural residues could be potentially used in the synthesis of high-value CA membranes for biogas purification applications in energy production.

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Synthesis and Characterization of Membranes from Cellulose Acetate Derivatives of Corn Husk

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.818.56 ◽

2019 ◽

Vol 818 ◽

pp. 56-61

Author(s):

Lucky Setyaningsih ◽

Harry Priambodo ◽

Inggar Erfiano ◽

Sandy Agung ◽

Rizqi Khrido Utomo

Keyword(s):

Tensile Strength ◽

Cellulose Acetate ◽

Agricultural Waste ◽

Cellulose Acetate Membrane ◽

X Ray Diffraction ◽

Cellulosic Fibers ◽

Swelling Degree ◽

Corn Husk ◽

Crosslinking Process

In this study membranes synthesized using cellulose acetate through chemical crosslinking process with polyethylene glycol (PEG) and dimethylformamide (DMF) acts as crosslinker agent. Cellulose is derived from corn husk, which known as agricultural waste that has potential sources of cellulosic fibers in producing cellulose acetate. The prepared membranes of corn husk cellulose were characterized by Fourier transform infrared and X-ray diffraction. The effect of various additives and additives concentration were investigated to obtain swelling degree and tensile strength of membranes. Result showed that highest swelling degree of 236% was achieved in the condition of DMF/S 10% w/w. This condition produce cellulose acetate membrane with thickness of 0.074 mm, tensile strength of 27.5kg/cm2 and elongation of 3.5%.

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Sintesis dan Karakterisasi Membran Selulosa Asetat dari Tandan Kosong Kelapa Sawit (Synthesis and Characterization of Cellulose Acetate Membranes from Oil Palm Empty Fruit Bunches)

Jurnal Riset Industri Hasil Hutan ◽

10.24111/jrihh.v9i2.3305 ◽

2017 ◽

Vol 9 (2) ◽

pp. 91-98

Author(s):

Rina Apriani ◽

Taufiqur Rohman ◽

Kamilia Mustikasari

Keyword(s):

Cellulose Acetate ◽

Oil Palm ◽

Synthesis And Characterization ◽

Cellulose Acetate Membrane ◽

Membrane Pore ◽

Empty Fruit Bunches ◽

Membrane Morphology ◽

Membrane Characterization ◽

Cellulose Acetate Membranes

The research of synthesis and characterization of cellulose acetate membranes fromoil palm empty fruit bunches (OPEFB) had been done. The purpose of this research is tofind out the characteristics of the cellulose acetate membrane from cellulose acetate ofOPEFB. The cellulose acetate membrane was prepared using the cellulose acetate (CA)and chloroform as solvent in the ratio 1:6, and the variations of polietilena glycol (PEG) asadditives were 10%, 20%, and 30% w/w. Membrane characterization was done inpermeability (flux), permselektivitas (rejection), and membrane morphology. The test wasperformed on water, T-70;; 1% w/v and T-500;; 1% w/v dextran solution. The resultsshowed that cellulose acetate membrane had the best characteristic in the addition ofPEG/S 10% w/w. The permeability was 55.54 L/m2hour in water, 18.48 L/m2hour fordextran T-70 and 5.14 L/m2hour for dextran T-500. The perm selectivity was 67.24% fordextran T-70 and 79.46% for dextran T-500. The SEM (Scanning Electron Microscope)analysis on membrane pore showed that the distribution of pore sizes is fine.Keywords : membrane, cellulose acetate, oil palm empty fruit bunches

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Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19902933 ◽

1990 ◽

Vol 55 (12) ◽

pp. 2933-2939 ◽

Cited By ~ 1

Author(s):

Hans-Hartmut Schwarz ◽

Vlastimil Kůdela ◽

Klaus Richau

Keyword(s):

Electrical Conductivity ◽

Electrical Properties ◽

Cellulose Acetate ◽

Reverse Osmosis ◽

Water Flux ◽

Cellulose Acetate Membrane ◽

Structure Parameters ◽

Dc Electrical Conductivity ◽

Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

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