Valuation of banana peel waste for producing activated carbon via NaOH and pyrolysis for methylene blue removal

2021 ◽  
Author(s):  
Lana S. Maia ◽  
Letícia D. Duizit ◽  
Fernanda R. Pinhatio ◽  
Daniella R. Mulinari
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Banana Peel ◽  
Methylene Blue Removal

Characterization of Adsorbents Derived from Palm Fiber Waste and its Potential on Methylene Blue Adsorption

2020 ◽  
Vol 841 ◽  
pp. 273-277
Author(s):  
Ariany Zulkania ◽  
Muhammad Iqbal ◽  
Syamsumarlin
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Phosphoric Acid ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Methylene Blue Adsorption ◽  
Palm Fiber ◽  
Methylene Blue Removal ◽  
Phosphoric Acid Concentration

In this study, two types of adsorbent including activated carbon and bio-sorbent were produced from Palm fiber wastes (PFW), which were activated by phosphoric acid. The influence of adsorbent type and phosphoric acid concentration on methylene blue adsorption was investigated. The most optimum adsorbent was determined based on adsorption capacity and removal percentage of each adsorbent. The result shows that 9.984 mg/g of adsorption capacity and 99.84% of removal percentage were achieved in 90 minutes’ adsorption, which demonstrates the huge potential of bio-sorbent and was chosen to be the most optimum adsorbent based on methylene blue removal. The characterization of bio-sorbent was then investigated using FTIR and SEM. FTIR result shows that bio-sorbent contains cellulose which affected the adsorption process while SEM result shows the cleaner pores and surface compared to bio-sorbent before activation.

scholarly journals Two-Stage Adsorber Design for Methylene Blue Removal by Coconut Shell Activated Carbon

2021 ◽  
Vol 17 (6) ◽  
pp. 768-775
Author(s):  
Fadina Amran ◽  
Nur Fatiah Zainuddin ◽  
Muhammad Abbas Ahmad Zaini
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Contact Time ◽  
Coconut Shell ◽  
Two Stage ◽  
Methylene Blue Removal ◽  
Pseudo Second Order ◽  
Coconut Shell Activated Carbon ◽  
Langmuir Constants ◽  
Insight Into

The present work was aimed at evaluating the performance of two-stage adsorber for methylene blue removal by coconut shell activated carbon in minimizing the adsorbent mass and contact time. The Langmuir constants were used to evaluate the optimum mass, while the pseudo-second-order constants for contact time. Results show that the adsorbent mass can only be minimized by 0.01 % due to the high adsorbent affinity towards methylene blue, while the contact time has been optimized to 12.2 min at the studied conditions. The effect of adsorbent affinity in two-stage adsorber was analyzed to shed some light about its importance in the design of two-stage adsorber. The performance evaluation was also discussed to bring insight into wastewater treatment applications.

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