Fly Ash – Alginate Composites Beads for Rhodamine B Removal

Heni Anggorowati, Perwitasari Perwitasari, Indriana Lestari


Dyes are a very serious problem for the environment. Composite beads consisting of fly ash and sodium alginate proved to be an adsorbent to reduce rhodamine b from dye waste. In this study, the effect of the mass of beads (5-45 grams), the pH of the solution (2-11) and the stirring time (0-360 min) was studied. Determination of concentration after adsorption was carried out by UV-Vis spectrophotometer. The maximum reduction in rhodamine b concentration of 31.15% was obtained after the adsorption process for 300 minutes with a mass of 35 grams of beads. The adsorption of rhodamine b is quite sensitive to the pH of the solution and shows the optimum adsorption value at pH 2. Based on the characterization with BET, fly ash – alginate beads include mesopores with a pore diameter of 10 nm, a total pore volume of 5,332 x 10-3 cc/g and a pore surface area. 2,133 m2/g


fly ash; alginate; beads; adsorption; rhodamin b


Abdollahi, M., Alboofetileh, M., Rezaei, M., & Behrooz, R. (2013). Comparing physico-mechanical and thermal properties of alginate nanocomposite films reinforced with organic and/or inorganic nanofillers, Food Hydrocolloids, 32 (2), 416–424.

Abou-Gamra, Z.M., & Medien, H.A.A. (2013). Kinetic, thermodynamic and equilibrium studies of rhodamine b adsorption by low cost biosorbent sugar cane bagasse. Eur. Chem. Bull, 2, 417–422. 33.

Ahmaruzzaman M. (2008). Adsorption of phenolic compounds on low-cost adsorbents: A review. Adv Colloid Interface Sci ; 143(1-2):48-67. doi: 10.1016/j.cis.2008.07.002

Aravindhan, R., Fathima, N. N., Rao, J. R. & Nair, B. U., (2007). Equilibrium and thermodynamic studies on the removal of basic black dye using calcium alginate beads. Colloids and Surfaces A : Physicochemical and Engineering Aspects, 299(1-3), 232-238

Dwijayanti, U., Gunawan, G., Widodo, D.S., Haris, A., Suyati, L., & Lusiana, R.A., (2020) Adsorpsi methylene blue (MB) menggunakan abu layang batubara teraktivasi larutan NaOH. Anal Environ Chem 5(1):1–14.

Fitriansyah, A., Amir, H., & Elvinawati, E., (2021) Karakterisasi adsorben karbon aktif dari sabut pinang (Areca catechu) terhadap kapasitas adsorpsi zat warna indigosol blue 04-B. Alotrop 5(1):42–54

Hussain, S., Khan, N., Gul, S., Khan, S., & Khan, H., (2019). Contamination of water resources by food dyes and its removal technologies. in water chemistry. Intech Open: London, UK, pp. 1–14.

Pavithra, K.G., & Jaikumar, V. (2019). Removal of colorants from wastewater: A review on sources and treatment strategies. J. Ind. Eng. Chem. 75, 1–19.

Rahayu, Bandjar, A., Ninditha Susanto, N.C.A., Fajarwati, F.I., & Phuong, N. (2022). Rhodamine-B dyes adsorption by beads alginate. Walisongo Journal of Chemistry. 5 (1), 29-36

Shah, J., Jan, M.R., Haq, A., & Khan, Y. (2013). Removal of Rhodamine B from aqueous solutions and wastewater by walnut shells: Kinetics, equilibrium and thermodynamics studies. Front. Chem. Sci. Eng, 7, 428–436.

Tabish, M.S., Hanapi, N.S.M., Ibrahim, W.N., Saim, N., & Yahaya, N., (2019). Alginate-graphene oxide biocomposite sorbent for rapid and selective extraction of non-steroidal anti-inflammatory drugs using micro-solid phase extraction. Indones. J. Chem, 19 (3), 684 - 695

Uzma, N., & Monika, D. (2014). Adsorption studies of zinc(II) ions on biopolymer composite beads Of Alginate-Fly Ash. European Chemical Bulletin, 3(7), 682-691

Wierzbicka, E., Ku´smierek, K., Swi, A., & Legocka, I. (2022). Efficient rhodamine b dye removal from water by acid- and organo-modified halloysites. Minerals, 12, 350. https://

Yu, Y., Murthy, B.N., Shapter, J., Constantopoulos, K.T., Voelcker, N., & Ellis, A. (2013). Benzene carboxylic acid derivatized graphene oxide nanosheets on natural zeolites as effective adsorbents for cationic dye removal. J. Hazard. Mater. 260, 330–338.



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