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Open AccessArticle

Eucheuma cottonii Seaweed-Based Biochar for Adsorption of Methylene Blue Dye

1
Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia
2
Centre of Urban Resource Sustainability, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia
3
Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(24), 10318; https://doi.org/10.3390/su122410318
Received: 12 October 2020 / Revised: 2 November 2020 / Accepted: 3 November 2020 / Published: 10 December 2020
(This article belongs to the Special Issue Removal of Emerging Pollutants from Wastewater Effluent)
Pollution from dye containing wastewater leads to a variety of environmental problems, which can destroy plant life and eco-systems. This study reports development of a seaweed-based biochar as an adsorbent material for efficient adsorption of methylene blue (MB) dye from synthetic wastewater. The Eucheuma cottonii seaweed biochar was developed through pyrolysis using a tube furnace with N2 gas, and the properties were later improved by sulfuric acid treatment. The adsorption studies were conducted in a batch experimental setup under initial methylene blue concentrations of 50 to 200 mg/L, solution pH of 2 to 10, and temperature of 25 to 75 °C. The characterization results show that the developed biochar had a mesoporous pore morphology. The adsorbent possessed the surface area, pore size, and pore volume of 640 m2/g, 2.32 nm, and 0.54 cm3/g, respectively. An adsorption test for 200 mg/L of initial methylene blue at pH 4 showed the best performance. The adsorption data of the seaweed-based biochar followed the Langmuir isotherm adsorption model and the pseudo-second-order kinetic model, with the corresponding R2 of 0.994 and 0.995. The maximum adsorption capacity of methylene blue using the developed seaweed‑based biochar was 133.33 mg/g. The adsorption followed the chemisorption mechanism, which occurred via the formation of a monolayer of methylene blue dye on the seaweed-based biochar surface. The adsorption performance of the produced seaweed biochar is comparable to that of other commercial adsorbents, suggesting its potential for large-scale applications. View Full-Text
Keywords: biochar; pyrolysis; methylene blue; adsorption; seaweed biochar; pyrolysis; methylene blue; adsorption; seaweed
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MDPI and ACS Style

Saeed, A.A.H.; Harun, N.Y.; Sufian, S.; Siyal, A.A.; Zulfiqar, M.; Bilad, M.R.; Vagananthan, A.; Al-Fakih, A.; Ghaleb, A.A.S.; Almahbashi, N. Eucheuma cottonii Seaweed-Based Biochar for Adsorption of Methylene Blue Dye. Sustainability 2020, 12, 10318. https://doi.org/10.3390/su122410318

AMA Style

Saeed AAH, Harun NY, Sufian S, Siyal AA, Zulfiqar M, Bilad MR, Vagananthan A, Al-Fakih A, Ghaleb AAS, Almahbashi N. Eucheuma cottonii Seaweed-Based Biochar for Adsorption of Methylene Blue Dye. Sustainability. 2020; 12(24):10318. https://doi.org/10.3390/su122410318

Chicago/Turabian Style

Saeed, Anwar A.H.; Harun, Noorfidza Y.; Sufian, Suriati; Siyal, Ahmer A.; Zulfiqar, Muhammad; Bilad, Muhammad R.; Vagananthan, Arvind; Al-Fakih, Amin; Ghaleb, Aiban A.S.; Almahbashi, Najib. 2020. "Eucheuma cottonii Seaweed-Based Biochar for Adsorption of Methylene Blue Dye" Sustainability 12, no. 24: 10318. https://doi.org/10.3390/su122410318

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