Abstract
The synthesized Fe3O4/SiO2/C nanocomposites are adsorbents for NH4+ ion removal from shrimp farm effluent. Fe3O4 nanomagnets were synthesized via coprecipitation, coated with silica and carbon using 2% NaOH activation, and PEG4000 as a binder. Structural characteristics were investigated through XRD, FT-IR, and VSM. Physico-chemical parameters, including adsorbent amount (0.05–0.3 g), contact time (10–70 min), and initial NH4Cl concentration (0.1–0.8 mg L–1), were investigated. Maximum NH4+ removal efficiency (83.5%) was achieved at 55 min with 0.2 g adsorbent mass, using a solution of 0.4 mg L–1 NH4Cl at pH 7 and 25 ºC. Pseudo-second-order kinetic model (R² = 0.9998) was satisfied with an adsorption capacity of 0.037 mg g–1. Langmuir isotherm estimated a capacity range of 0.005 to 0.087 mg g–1. The adsorption process occurs exothermically, spontaneously, and is physisorption. Filtrate analysis by UV-Vis with phenate reagents showed notable reduction in NH4+ levels post-adsorption (0.077-0.282 mg L–1) with GIS visualization, showcasing effective environmental preservation. These nanocomposites successfully adsorbed NH4+ in shrimp pond effluent with potential magnetic recovery.
References
Ainane, T.; Khammour, F.; Talbi, M.; Elkouali, M. A novel bio-adsorbent of mint waste for dyes remediation in aqueous environments: Study and modeling of isotherms for removal of methylene blue. Orient. J. Chem. 2014, 30, 1183–1189. https://doi.org/10.13005/ojc/300332
Anbarasu, M.; Anandan, E.; Chinnasamy, V.; Gopinath, K. B. Synthesis and characterization of Fe3O4/SiO2 composite with in-situ method: TEOS as SiO2 NPs precursor. Journal of Physics: Conference Series. 2019, 1171 (1), 6–11. https://doi.org/10.1088/1742-6596/1171/1/012050
Antarnusa, G.; Jayanti, P. D.; Denny, Y. R.; Suherman, A. Utilization of co-precipitation method on synthesis of Fe3O4/PEG with different concentrations of PEG for biosensor applications. Materialia, 2022, 25, 101525. https://doi.org/10.1016/j.mtla.2022.101525
Ardiyanti, H.; Puspitarum, D; Maryana, O. F.; Pujakesuma, W. A. Synthesis and Bonding Analysis of Magnetite Composite Based on Sugarcane Bagasse. ICOSITER 2018 Proceeding, J. Sci. Appl. Technol. 2018, 197–200.
Armid, A.; Shinjo, R.; Takwir, A.; Ruslan, R.; Wijaya, A. R. Spatial distribution and pollution assessment of trace elements Pb, Cu, Ni, Fe and as in the surficial water of Staring Bay, Indonesia. J. Braz. Chem. Soc. 2021, 32, 299–310. https://doi.org/10.21577/0103-5053.20200180
Aurich, A.; Hofmann, J.; Oltrogge, R.; Wecks, M.; Gläser, R.; Blömer, L.; Mauersberger, S.; Müller, R. A.; Sicker, D.; Giannis, A. Pseudo-second order model for sorption processes Y.S. Org. Process Res. Dev. 2017, 21, 866–870. https://doi.org/10.1021/acs.oprd.7b00090
Boopathy, R.; Karthikeyan, S.; Mandal, A. B.; Sekaran, G. Adsorption of ammonium ion by coconut shell-activated carbon from aqueous solution: kinetic, isotherm, and thermodynamic studies. Environmental Science and Pollution Research. 2013, 20 (1), 533–542. https://doi.org/10.1007/s11356-012-0911-3
Brzezinski, M. A. Colorimetric determination of nanomolar concentrations of ammonium in seawater using Reagents 1987, 20, 277–288. https://doi.org/10.1016/0304-4203(87)90078-8
Dindar, M. H.; Fathi, S. A. M.; Yaftian, M. R.; Noushiranzadeh, N. Solid phase extraction of copper(II) ions using C18-silica disks modified by oxime ligands. J. Hazard. Mater. 2010, 179, 289–294. https://doi.org/10.1016/j.jhazmat.2010.02.092
Ding, Y.; Liu, Y. X.; Wu, W. X.; Shi, D. Z.; Yang, M.; Zhong, Z. K. Evaluation of biochar effects on nitrogen retention and leaching in multi-layered soil columns. Water. Air. Soil Pollut. 2010, 213, 47–55. https://doi.org/10.1007/s11270-010-0366-4
Fattahi, B.; Dekamin, M. G. Fe3O4/SiO2 decorated trimesic acid-melamine nanocomposite: a reusable supramolecular organocatalyst for efficient multicomponent synthesis of imidazole derivatives. Sci. Rep. 2023, 13, 1–13. https://doi.org/10.1038/s41598-023-27408-7
Feng, S.; Wang, R.; Bai, Y.; Yang, S.; Ma, Q.; Yilihamu, A.; Yang, S.-T.; Luo, J. Fe3O4/SiO2/C nanocomposites for the fenton-like disinfection of Escherichia coli in water Fe3O4/ SiO2/C nanocomposites for the fenton-like disinfection of Escherichia coli in water. Mater. Res. Express. 2019, 6 (5) 055032. https://doi.org/10.1088/2053-1591/ab0585
Galamini, G.; Ferretti, G.; Medoro, V.; Tescaro, N.; Faccini, B.; Coltorti, M. Isotherms, kinetics, and thermodynamics of NH4+ adsorption in raw liquid manure by using natural chabazite zeolite-rich tuff. Water Switz. 2020, 12, 1–16. https://doi.org/10.3390/w12102944
Haghighi, B.; Kurd, S. F. Sequential flow injection analysis of ammonium and nitrate using gas phase molecular absorption spectrometry. Talanta. 2004, 64, 688–694. https://doi.org/10.1016/j.talanta.2004.03.037
Han, J., Rong, J.; Wang, Y., Liu, Q.; Tang, X.; Li, C.; Ni, L. Immobilization of cellulase on thermo-sensitive; agnetic microspheres: improved stability and reproducibility. Bioprocess Biosyst. Eng. 2018, 41, 1051–1060. https://doi.org/10.1007/s00449-018-1934-z
Krishnani, K. K.; Parimala, V.; Gupta, B. P.; Azad, I. S.; Meng, X.; Abraham, M. Bagasse‐Assisted Bioremediation of Ammonia from Shrimp Farm Wastewater. Water Environ. Res. 2006, 78, 938–950. https://doi.org/10.2175/106143005x72911
Larumbe, S.; Gómez-Polo, C.; Pérez-Landazábal, J. I.; Pastor, J. M. Effect of a SiO2 coating on the magnetic properties of Fe3O4 nanoparticles. J. Phys. Condens. Matter Inst. Phys. J. 2012, 24, 266007. https://doi.org/10.1088/0953-8984/24/26/266007
Mahdavi, M.; Ahmad, M. B.; Haron, M. J.; Namvar, F.; Nadi, B.; Rahman, M. A. Z.; Amin, J. Synthesis, surface modification and characterisation of bio;ompatible magnetic iron oxide nanoparticles for biomedical applications. Molecules. 2013, 18, 7533–7548. https://doi.org/10.3390/molecules18077533
Ma’rufah, H.; Rohmaniah, S.; Aripin, M.; Sutanto, H. Sintesis Material Nano Fe3O4 Dari Karat Besi Yang Berpotensi Diaplikasikan Sebagai Solar Absorber Pada Quantum Dot Sensitized Solar Cell (QDSSC). Berk. Fis. 2019, 22, 117–122.
Mazo-Zuluaga, J.; Barrero, C. A.; Díaz-Terán, J.; Jerez, A. Thermally Induced Magnetite-Haematite Transformation. Hyperfine Interact. 2003, 148, 153–161. https://doi.org/10.1023/B:HYPE.0000003776.84005.89
Munasir, M.; Dewanto, A. S.; Yulianingsih, A.; Saadah, I. K. F.; Supardi, Z. A. I.; Mufid, A.; Taufiq, A. Composites of Fe3O4/SiO2 from Natural Material Synthesized by Co-Precipitation Method. IOP Conf. Ser. Mater. Sci. Eng. 2017, 202. https://doi.org/10.1088/1757-899X/202/1/012057
Pires, N. R.; Santos, C. M. W.; Sousa, R. R.; De Paula, R. C. M.; Cunha, P. L. R.; Feitosa, J. P. A. Novel and fast microwave-assisted synthesis of carbon quantum dots from raw cashew gum. J. Braz. Chem. Soc. 2015, 26, 1274–1282. https://doi.org/10.5935/0103-5053.20150094
Rahman, M. W.; Ali, M. Y.; Saha, I.; Al Raihan, M.; Moniruzzaman, M.; Alam, M. J.; Deb, A.; Khan, M. M. R. Date palm fiber as a potential low-cost adsorbent to uptake chromium (VI) from industrial wastewater. Desalination Water Treat. 2017, 88, 169–178. https://doi.org/10.5004/dwt.2017.21402
Rianna, M.; Hamid, M.; Handayani, F.; Sebayang, A. M. S.; Rangkuti, W. R.; Situmorang, M.; Sembiring, T.; Setiadi, E. A.; Tetuko, A. P.; Sebayang, P. Study and characterization of Fe3O4 synthesized from natural iron sand in Sumatera Utara. J. Aceh Phys. Soc. 2022, 11, 45–48. https://doi.org/10.24815/jacps.v11i2.23492
Sharifnia, S., Khadivi, M.A., Shojaeimehr, T., Shavisi, Y. Characterization, isotherm and kinetic studies for ammonium ion adsorption by light expanded clay aggregate (LECA). J. Saudi Chem. Soc. 2016, 20, S342–S351. https://doi.org/10.1016/j.jscs.2012.12.003
Sharma, S.; Ahmad, W. The classification, characterization, and application of ion exchange resins: A general survey. International Conference on New Horizons in Green Chemistry & Technology (ICGCT) 2018.
Shooto, N. D. Removal of toxic hexavalent chromium (Cr(VI)) and divalent lead (Pb(II)) ions from aqueous solution by modified rhizomes of Acorus calamus. Surf. Interfaces. 2020, 20, 100624. https://doi.org/10.1016/j.surfin.2020.100624
Sohaimi, K. S. A.; Iberahim, N. I.; Ghani, A. A.; Zamrud, Z.; Heng, C. W. Ammonium adsorption - Desorption using rice husk biochar. IOP Conf. Ser. Earth Environ. Sci. 2021, 765, 012061. https://doi.org/10.1088/1755-1315/765/1/012061
Suci, C. W.; Wijaya, A. R.; Santoso, A.; Kusumaningrum, I. K. Fe leaching in the sludge sediment of the prigi beach with tessier-microwave method. AIP Conf. Proc. 2020, 2231, 040025. https://doi.org/10.1063/5.0002589
Sumantri, I.; Buchori, L.; Mukti, F. A. W.; Ramadhani, F.; Anggoro, D. D. Study of the rate of adsorption of toxic gases in shrimp ponds using Sukabumi natural zeolite. AIP Conf. Proc. 2020, 2197, 120005. https://doi.org/10.1063/1.5140962
Susetyaningsih, R.; Suntoro, S.; Gunawan, T.; Sri Budiastuti, M. T. Impact of shrimp pond waste on water quality (case study of trisik lagoon in yogyakarta). AIP Conf. Proc. 2020, 2296, 020050. https://doi.org/10.1063/5.0030551
Syafiuddin, A.; Salmiati, S.; Jonbi, J.; Fulazzaky, M. A. Application of the kinetic and isotherm models for better understanding of the behaviors of silver nanoparticles adsorption onto different adsorbents. J. Environ. Manage. 2018, 218, 59–70. https://doi.org/10.1016/j.jenvman.2018.03.066
Tabak, A.; Baltas, N.; Afsin, B.; Emirik, M.; Caglar, B.; Eren, E. Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium-bentonite. J. Chem. Technol. Biotechnol. 2010, 85, 1199–1207. https://doi.org/10.1002/jctb.2416
Tatinting, G. D.; Aritonang, H. F.; Wuntu, A. D. Sintesis Nanopartikel Fe3O4–polietilen glikol (PEG) 6000 Dari Pasir Besi Pantai Hais Sebagai Adsorben Logam Kadmium (Cd). Chem. Prog. 2021, 14 (2), 131-137. https://doi.org/10.35799/cp.14.2.2021.37192
Tsitsifli, S.; Kanakoudis, V. Disinfection Impacts to Drinking Water Safety—A Review. Proceedings. 2018, 2 (11), 603. https://doi.org/10.3390/proceedings2110603
Ramírez-Chavarría, R. G.; Santamaria-Padilla, L.; Vera-Martínez, D. Modeling and analysis of ion exchange for ammonium removal from groundwater. Mem. Congr. Nac. Control Automático. 2024, 7, 91–96. https://doi.org/10.58571/CNCA.AMCA.2024.016
Rianna, M.; Hamid, M.; Handayani, F.; Sebayang, A. M.S.; Rangkuti, W. R.; Situmorang, M.; Sembiring, T.; Setiadi, E. A.; Tetuko, A.P.; Sebayang, P. Study and characterization of Fe3O4 synthesized from naturaliron sand in Sumatera Utara. J. Aceh Phys. Soc. 2022, 11, 45–48. https://doi.org/10.24815/jacps.v11i2.23492
Uğurlu, M.; Gürses, A.; Yalçın, M.; Doğar, C. The removal of lignin and phenol from paper mill effluents by electrocoagulation. Journal of Environmental Management. 2008, 87 (3), 420–428. https://doi.org/10.1016/j.jenvman.2007.01.007
Uğurlu, M.; Karaoğlu, M. H. Adsorption of methylene blue dye by sepiolite clay: Determination of equilibrium and kinetic parameters. Microporous and Mesoporous Materials. 2011, 139 (1-3), 173–178. https://doi.org/10.1016/j.micromeso.2010.10.031
Utomo, S. B.; Jumina, J. Siswanta, D.; Mustofa, M. Kinetics and equilibrium model of Pb(II) and Cd(II) adsorption onto tetrakis-thiomethyl-C-4-methoxyphenylcalix[4]resorcinarene. Indones. J. Chem. 2012, 12, 49–56. https://doi.org/10.22146/ijc.21371
Vu, M. T.; Chao, H. P.; Van Trinh, T.; Le, T. T.; Lin, C. C.; Tran, H. N. Removal of ammonium from groundwater using NaOH-treated activated carbon derived from corncob wastes: Batch and column experiments. J. Clean. Prod. 2018, 180, 560–570. https://doi.org/10.1016/j.jclepro.2018.01.104
Wang, C.; Zhong, H.; Wu, W.; Pan, C.; Wei, X.; Zhou, G.; Yang, F. Fe3O4 @ C Core − Shell Carbon Hybrid Materials as Magnetically Separable Adsorbents for the Removal of Dibenzothiophene in Fuels. ACS Omega. 2019, 4, 1652−1661. https://doi.org/10.1021/acsomega.8b03157
Wang, R. yu; Zhang, W.; Zhang, L. ying; Hua, T.; Tang, G.; Peng, X. qian; Hao, M. hui; Zuo, Q. ting. Adsorption characteristics of Cu(II) and Zn(II) by nano-alumina material synthesized by the sol-gel method in batch mode. Environ. Sci. Pollut. Res. 2019, 26, 1595–1605. https://doi.org/10.1007/s11356-018-3453-5
Wijaya, A. R.; Khoerunnisa, F.; Armid, A.; Lusiana, R. A. The best-modified BCR and Tessier with microwave-assisted methods for leaching of Cu/Zn and their δ65Cu/δ66Zn for tracing sources in marine sediment fraction. Environ. Technol. Innov. 2022a, 28, 102663. https://doi.org/10.1016/j.eti.2022.102663
Wijaya, A. R.; Kusumaningrum, I. K.; Hakim, L.; Francová, A.; Chrastný, V.; Vítková, M.; Vaňková, Z.; Komárek, M. Road-side dust from central Jakarta, Indonesia: Assessment of metal(loid) content, mineralogy, and bioaccessibility. Environ. Technol. Innov. 2022b, 28, 102934. https://doi.org/10.1016/j.eti.2022.102934
Wijaya, A. R.; Oktaviana, I.; Wonorahardjo, S.; Utomo, Y.; Muntholib, M.; Daupor, H.; Hossain, M. S.; Sanjaya, E. H. Optimization of BCR Microwave from Fe Assessment in Sediment Material in the Gulf of Prigi. IOP Conf. Ser. Mater. Sci. Eng. 2019a, 515, 012091. https://doi.org/10.1088/1757-899X/515/1/012091
Wijaya, A. R.; Semedi, B.; Lusiana, R. A.; Armid, A.; Muntholib, M. Metal contents and Pb isotopes in the surface seawater of the Gulf of Prigi, Indonesia: Detection of anthropogenic and natural sources. J. Braz. Chem. Soc. 2019b, 30, 915–929. https://doi.org/10.21577/0103-5053.20180228
Zhang, H.; Liang, X.; Yang, C.; Niu, C.; Wang, J.; Su, X. Nano γ-Fe2O3/bentonite magnetic composites: Synthesis, characterization and application as adsorbents. J. Alloys Compd. 2016, 688, 1019–1027. https://doi.org/10.1016/j.jallcom.2016.07.036
Zhao, S. Y.; Don, K. L.; Chang, W. K.; Hyun, G. C.; Young, H. K.; Young, S. K. Synthesis of magnetic nanoparticles of Fe3O4 and CoFe2O4 and their surface modification by surfactant adsorption. Bull. Korean Chem. Soc. 2006, 27, 237–242. https://doi.org/10.5012/bkcs.2006.27.2.237
Zheng, X.; Zheng, H.; Zhou, Y.; Sun, Y.; Zhao, R.; Liu, Y.; Zhang, S. Enhanced adsorption of Orange G from aqueous solutions by quaternary ammonium group-rich magnetic nanoparticles. Colloids Surf. Physicochem. Eng. Asp. 2019, 580, 123746. https://doi.org/10.1016/j.colsurfa.2019.123746

This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Eclética Química
