Nata de Cassava Type of Bacterial Cellulose Doped with Phosphoric Acid as a Proton Exchange Membrane

Sari, Andarany Kartika; Yunus, Rozan Mohamad; Majlan, Edy Herianto; Loh, Kee Shyuan; Wong, Wai Yin; Saidin, Nur Ubaidah; Alva, Sagir; Khaerudini, Deni Shidqi

doi:10.3390/membranes13010043

Cited by 3 publications

(6 citation statements)

References 39 publications

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“…A proton exchange membrane requires high conductivity, thermal stability, absorbency, and cost-effectiveness [176]. BC shows promise as a sustainable material for these electronic applications and conducting materials [5,177,178].…”

Section: Energy Storage and Electronicsmentioning

confidence: 99%

“…BC shows promise as a sustainable material for these electronic applications and conducting materials [5,177,178]. However, pure BC lacks optical transparency, electrical conductivity, magnetism, hydrophobicity, and antimicrobial properties [176]. To enhance its capabilities for use in conducting materials and electrical devices, BC must undergo modification.…”

Section: Energy Storage and Electronicsmentioning

confidence: 99%

“…The addition of phosphoric acid was found to enhance membrane proton conductivity [182]. Phosphorylation has an impact on ion exchange capacity, ionic conductivity, swelling index, and contact angle of the membrane [176]. The phosphorylated BC produced from cassava liquid waste and doped with 20 mmol of H 3 PO 4 leads to an enhancement in proton conductivity, with a maximum conductivity reaching 7.9 × 10 −2 S/cm at 80 • C. Furthermore, a membrane electrode assembly was constructed using this membrane, with 60 %w/w Pt/C loading of 0.5 mg/cm 2 for both the anode and cathode.…”

Section: Energy Storage and Electronicsmentioning

confidence: 99%

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Bacterial Nanocellulose Produced by Cost-Effective and Sustainable Methods and Its Applications: A Review

Taokaew

2024

Fermentation

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This review discusses the recent advancements in cost-effective fermentation methods for producing bacterial nanocellulose (BC) from food and agro-industrial waste. Achieving economical cell culture media is crucial for large-scale BC production, requiring nutrient-rich media at low cost to maximize cellulose yield. Various pretreatment methods, including chemical, physical, and biological approaches, are stated to break down waste into accessible molecules for cellulose-producing bacteria. Additionally, strategies such as dynamic bioreactors and genetic engineering methods are investigated to enhance BC production. This review also focuses on the environmental impact assessment and updated application challenges of BC such as medical applications, energy storage/electronics, filtration membranes, and food packaging. By providing insights from the recent literature findings, this review highlights the innovative potential and challenges in economically and efficiently producing BC from waste streams.

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Section: Energy Storage and Electronicsmentioning

confidence: 99%

Section: Energy Storage and Electronicsmentioning

confidence: 99%

Section: Energy Storage and Electronicsmentioning

confidence: 99%

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Bacterial Nanocellulose Produced by Cost-Effective and Sustainable Methods and Its Applications: A Review

Taokaew

2024

Fermentation

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“…DMFCs must be designed to provide high-ion exchange capacity and low-water uptake. They should also have good proton conductivity and a long-life span [18,19]. The high proton conductivity of PEM ensures that it can conduct protons efficiently from the anode to the cathode.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Nemavhola,

Modau,

Sigwadi

et al. 2023

Preprint

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The purpose of this study is to identify the steps involved in fabricating silica/chitosan composite membranes and their suitability in fuel cell application. It also intends to identify the physical characteristics of chitosan composite membranes, including their degree of water absorption, proton conductivity, methanol permeability, and functional groups. In this investigation, composite membranes were fabricated using the solution casting method with chitosan content of 5 g and silica variations dosage of 2% and 4% while stirring at a constant speed for 2h. According to the findings, the analysis of composite membranes produced chitosan membranes that were successfully modified with silica. The optimum membrane was found to be 4% s-SiO2 from the Sol-gel method with composite membrane's optimal condition of 0.234 cm/s proton conductivity, water uptake of 56.21%, and reduced methanol permeability of 0.99 × 10 -7 cm2/s in the first 30 minutes and 3.31 × 10-7 in the last 150 minutes. Maintaining lower water uptake capacity at higher silica content is still a challenge that needs to be addressed. However, the fabricated membranes showed exceptional results in terms of proton conductivity and methanol permeability.

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“…DMFCs must be designed to provide high ion exchange capacity and low water uptake. They should also have good proton conductivity and a long life span [19,20].…”

Section: Introductionmentioning

confidence: 99%

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Modau,

Sigwadi,

Mokrani

et al. 2023

Membranes

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The purpose of this study is to identify the steps involved in fabricating silica/chitosan composite membranes and their suitability for fuel cell applications. It also intends to identify the physical characteristics of chitosan composite membranes, including their degree of water absorption, proton conductivity, methanol permeability, and functional groups. In this investigation, composite membranes were fabricated using the solution casting method with a chitosan content of 5 g and silica dosage variations of 2% and 4% while stirring at a constant speed for 2 h. According to the findings, the analysis of composite membranes produced chitosan membranes that were successfully modified with silica. The optimum membrane was found to be 4% s-SiO2 from the Sol-gel method with the composite membrane’s optimal condition of 0.234 cm/s proton conductivity, water uptake of 56.21%, and reduced methanol permeability of 0.99 × 10−7 cm2/s in the first 30 min and 3.31 × 10−7 in the last 150 min. Maintaining lower water uptake capacity at higher silica content is still a challenge that needs to be addressed. In conclusion, the fabricated membranes showed exceptional results in terms of proton conductivity and methanol permeability.

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Nata de Cassava Type of Bacterial Cellulose Doped with Phosphoric Acid as a Proton Exchange Membrane

Cited by 3 publications

References 39 publications

Bacterial Nanocellulose Produced by Cost-Effective and Sustainable Methods and Its Applications: A Review

Bacterial Nanocellulose Produced by Cost-Effective and Sustainable Methods and Its Applications: A Review

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Chitosan Membranes for Direct Methanol Fuel Cell Applications

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