- Title
- Mesoporous architectural magnetic halloysite-polymer beads for removing toxic streptomycin from water: A sustainable remediation approach
- Creator
- Deb, Amal Kanti; Rahman, Mohammad Mahmudur; Biswas, Bhabananda; Xi, Yunfei; Islam, Md. Rashidul; Hassan, Masud; Naidu, Ravi
- Relation
- Groundwater for Sustainable Development Vol. 26, no. 101258
- Publisher Link
- http://dx.doi.org/10.1016/j.gsd.2024.101258
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2024
- Description
- Streptomycin (STR) is a widely used antibiotic to treat various infectious diseases in humans and animals. Increased STR production and distribution result in harmful residue in soil and water. Consequently, STR exists in biotic- and abiotic-counterpart of the environment and poses potential toxicity and risk due to its bioaccumulation and biomagnification properties. Sustainable remediation of STR from wastewater requires selective, minimal, low-cost, regenerable, and reusable materials as adsorbents. In this study, magnetic-halloysite incorporated polymer composite beads (SPHM) were synthesized and used for the efficient clean-up of toxic STR from wastewater. SPHM has a mesoporous structure with an abundance of oxygen-containing functional groups and exhibits a synergistic STR clean up performance (qm = 235.71 ± 13.98 mg/g). Sorption and interfacial studies revealed that diffusion, hydrophobic and ionic interactions, including electrostatic interaction, are involved in STR remediation. Electrostatic interaction plays a vital role alongside the physical sorption mechanism due to the presence of hydroxyl and carboxyl groups induced from poly (vinyl alcohol) and sodium alginate. Moreover, X-ray photoelectron spectroscopy (XPS) and Time-of-flight secondary ion mass spectrometry (ToF-SIMS) analyses confirm the involvement of opposing charged groups of SPHM and STR in adsorption. SPHM can be magnetically separated in just 20 s and is regenerable and reusable up to 10 times, with outstanding performance and stability. The sorption process requires only a minimal amount of SPHM, i.e., 0.5 g/L for STR clean-up. Even the natural surface water composition did not affect its performance. Hence, natural nanoclay-based, biocompatible and low-cost SPHM has a great potential for the sustainable remediation of streptomycin and other similar antibiotics from wastewater.
- Subject
- streptomycin; magnetic-halloysite; polymer-beads; sorption; regeneration; reusability; SDG 3; SDG 6; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1509589
- Identifier
- uon:56267
- Identifier
- ISSN:2352-801X
- Language
- eng
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