Mechanistic interaction of ciprofloxacin on zeolite modified seaweed (Sargassum crassifolium) derived biochar: Kinetics, isotherm and thermodynamics.
TL;DR: In this paper, a brown seaweed (Sargassum crassifolium) was pyrolyzed at 500°C and the obtained biochar (SWBC) was modified with zeolite through the slurry method maintaining the ratio at 1:5 (zeolite: biochar).
About: This article is published in Chemosphere.The article was published on 2021-10-01. It has received 49 citations till now. The article focuses on the topics: Freundlich equation & Biochar.
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TL;DR: In this article , the authors summarized the current scenario of antibiotic and pharmaceutical removal from wastewater using microalgae-mediated technologies, and they integrated this technology with other technologies, such as biodiesel, biochemical, and bioelectricity production, to make this technology more economical and efficient.
33 citations
TL;DR: In this article , a novel adsorbent of KMSBC was synthesized and tested to adsorb three typical fluoroquinolone antibiotics of CIP, NOR and OFL from water.
28 citations
TL;DR: In this article, the effect of engineered biochar composites on pollutant eradication is discussed. And various synthesis mechanisms, modification processes, properties, and composition of lignocellulosic biochar composite along with the mechanism of pollutant removal are expounded.
Abstract: There has been considerable growing interest in the production and application of biochar derived from various sources, especially from the lignocellulosic biomass (crop residues), sewage sludge, plastic wastes, etc. Biochar have emerged as potential candidates as catalysts in different chemical and bioprocesses, and for soil remediation and amelioration, agrochemical removal, carbon sequestration, removal of organic and inorganic wastes, wastewater treatment, supercapacitor, electrode material, etc. Recently, to increase the adsorption efficiency of conventional biochar, modifications to create composite biochar have been initiated. Modification may alter surface functionality, ash content, surface charges, and surface area, subsequently enhancing fixation and removal of toxic compounds. High carbon content, high specific surface area, high cation exchange capacity, porous structure, and stability of engineered biochar composite has raised their utility in environmental remediation. Therefore, to proffer a detailed mechanism and application of engineered biochar, this review conceptualizes the effect of biochar composites on pollutant eradication. Moreover, various synthesis mechanisms, modification processes, properties, and composition of lignocellulosic biochar composites along with the mechanism of pollutant removal are expounded. In summary, engineered biochar composites have wide application prospects in providing sustainable bioeconomy however the mechanism and impact of engineered biochar should be further investigated.
25 citations
TL;DR: In this paper , discarded Jack Fruit Peel (JFP) is used as an activated carbon incorporated with zinc oxide nanocomposite and the prepared activated carbon in this experiment was characterized by determining their functional groups, morphological characters, and nature of the adsorbent material by analyzing the Fourier Transform InfraRed (FTIR), Field Emission Scanning Electron Microscopy (FESEM), and X-ray Diffraction (XRD) characterization.
25 citations
TL;DR: In this article , a combination of brown algae and ZnCl2 chemical activator (ZBAB) successfully produced mesoporous biochar with excellent physicochemical characteristics and gave the best CIP adsorption capacity.
22 citations
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TL;DR: Analysis of pharmaceuticals in the effluent from a wastewater treatment plant serving about 90 bulk drug manufacturers in Patancheru, near Hyderabad, India suggests an increased focus on the potential release of active pharmaceutical ingredients from production facilities in different regions.
1,220 citations
TL;DR: This review summarizes the characteristics of biochar (e.g., surface area, porosity, pH, surface charge, functional groups, and mineral components) and main mechanisms governing sorption of As, Cr, Cd, Pb, and Hg by biochar and includes competitive sorption mechanisms of co-existing metals.
1,091 citations
TL;DR: In this article, a large number of experiments on biochar production is presented to give a general overview of the properties that can be achieved by feedstock selection and process design, including torrefaction as well as slow pyrolysis at high temperatures.
681 citations
TL;DR: In this article, a fixed-bed slow pyrolysis from various feedstock biomasses under a range of process conditions was used to produce biochar, which was characterized by proximate analysis, CHN-elemental analysis, pH in solution, bomb calorimetry for higher heating value, N2 adsorption for BET surface area and two biological degradation assays (oxygen demand, carbon mineralization in soil).
Abstract: Biochar was produced by fixed-bed slow pyrolysis from various feedstock biomasses under a range of process conditions. Feedstocks used were pine wood, wheat straw, green waste and dried algae. Process conditions varied were the highest treatment temperature (HTT) and residence time. The produced chars were characterized by proximate analysis, CHN-elemental analysis, pH in solution, bomb calorimetry for higher heating value, N2 adsorption for BET surface area and two biological degradation assays (oxygen demand, carbon mineralization in soil). In proximate analysis, it was found that the fixed carbon content (expressed in wt% of dry and ash-free biochar) in the biochar samples strongly depended on the intensity of the thermal treatment (i.e. higher temperatures and longer residence times in the pyrolysis process). The actual yield in fixed carbon (i.e. the biochar fixed carbon content expressed as wt% of the dry and ash-free original feedstock biomass weight) was practically insensitive to the highest treatment temperature or residence time. The pH in solution, higher heating value and BET surface positively correlated with pyrolysis temperature. Finally, soil incubation tests showed that the addition of biochar to the soil initially marginally reduced the C-mineralization rate compared against the control soil samples, for which a possible explanation could be that the soil microbial community needs to adapt to the new conditions. This effect was more pronounced when adding chars with high fixed carbon content (resulting from more severe thermal treatment), as chars with low fixed carbon content (produced through mild thermal treatment) had a larger amount of volatile, more easily biodegradable, carbon compounds.
635 citations
TL;DR: This work has shown that strain-tunable spin transport in ferromagnetic graphene junctions can be controlled by laser-spot assisted, 3D image analysis, and the structure of the junctions itself can be modified to facilitate spin transport.
Abstract: Scientific Reports 6: Article number: 21590; published online: 22 February 2016; updated: 23 January 2017 This Article contains errors in Reference 15 which was incorrectly given as: Song, Y., Zhai, F. & Guo, Y. Strain-tunable spin transport in ferromagnetic graphene junctions. Appl. Phys. Lett.103, 183111 (2013).
467 citations