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Applicability of TiO2(B) nanosheets@hydrochar composites for adsorption of tetracycline (TC) from contaminated water
Mengting Z., Kurniawan T.A.b, Avtar R.c, Othman M.H.D.d, Ouyang T., Yujia H., Xueting Z., Setiadi T.e, Iswanto I.f
a Key Laboratory of the Coastal and Wetland Ecosystems (Xiamen University), Ministry of Education, College of the Environment and Ecology, Xiamen University, Fujian, 361102, China
b Department of Energy, Environment, and Climate Change, School of Environment Resources and Development (SERD), Asian Institute of Technology (AIT), Pathumthani, 12120, Thailand
c Faculty of Environmental Earth Sciences, Hokkaido University, Sapporo, 060-0810, Japan
d Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, University Teknologi Malaysia, Skudai, 81310, Malaysia
e Center for Environment Studies, Bandung Institute of Technology (ITB), Bandung, 40135, Indonesia
f Poltekkes, Kemenkes, Yogyakarta, 55293, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 Elsevier B.V.We test the feasibility of TiO2(B)@carbon composites as adsorbents, derived from wheat straws, for tetracycline (TC) adsorption from aqueous solutions. Hydrochar (HC), biochar (BC), and hydrochar-derived pyrolysis char (HDPC) are synthesized hydrothermally from the waste and then functionalized with TiO2(B), named as ‘Composite-1′, ‘Composite-2′, and ‘Composite-3′, respectively. A higher loading of TiO2(B) into the HC was also synthesized for comparison, named as ‘Composite-4′. To compare their physico-chemical changes before and after surface modification, the composites are characterized using FESEM-EDS, XRD, BET, FRTEM, and FTIR. The effects of H2O2 addition on TC removal are investigated. Adsorption kinetics and isotherms of TC removal are studied, while TC adsorption mechanisms are elaborated. We found that the Composite-4 has the highest TC removal (93%) at pH 7, 1 g/L of dose, and 4 h of reaction time at 50 mg/L of TC after adding H2O2 (10 mM). The TC adsorption capacities of the Composite-1 and Composite-4 are 40.65 and 49.26 mg/g, respectively. The TC removal by the Composite-1 follows the pseudo-second order. Overall, this suggests that converting the wheat straw into HC and then functionalizing its surface with TiO2(B) as a composite has added values to the waste as an adsorbent for wastewater treatment.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Adsorption capacities,Adsorption kinetics and isotherm,Adsorption mechanism,Carbon composites,Contaminated water,Functionalized,Physico-chemical changes,Pseudo second order,Adsorption,Charcoal,Hydrogen Peroxide,Kinetics,Tetracycline,Titanium,Waste Water,Water,Water Pollutants, Chemical,Water Purification[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Adsorption,Antibiotics,H-bond,Low-cost adsorbent,Refractory pollutant[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][{‘$’: ‘The corresponding author is grateful to the TWAS?Elsevier Foundation and the TYAN of the World Academy of Sciences, respectively, for the Fellowship in Sustainability No. FR 3240292438 and the Collaborative Grant Award No. FR 3240304540. The Fellowship from the TWAS?UNESCO Associateship No. 3240314536 is also acknowledged. This research was also supported in part with the Kurita Asia Research Grant provided by the Kurita Water and Environment Foundation (Japan).’}, {‘$’: ‘The corresponding author is grateful to the TWAS−Elsevier Foundation and the TYAN of the World Academy of Sciences, respectively, for the Fellowship in Sustainability No. FR 3240292438 and the Collaborative Grant Award No. FR 3240304540. The Fellowship from the TWAS−UNESCO Associateship No. 3240314536 is also acknowledged. This research was also supported in part with the Kurita Asia Research Grant provided by the Kurita Water and Environment Foundation (Japan).’}][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.jhazmat.2020.123999[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]