Magnetic activated biochar nanocomposites derived from wakame and its application in methylene blue adsorption

Yao, Xiaoyuan; Ji, Lili; Guo, Jingjie; Ge, Shaoliang; Lu, Wencheng; Cai, Lu; Wang, Yaning; Song, Wen‐Dong; Zhang, Hailong

doi:10.1016/j.biortech.2020.122842

Cited by 215 publications

(44 citation statements)

References 49 publications

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“…Various treatment methods, e.g., advanced oxidation processes [10], ion flotation [11], ozonation [12], membrane separation [13], anaerobic and aerobic treatment [14], biological treatment [15], and adsorption [16] have been used to treat wastewater containing organic dyes. However, these methods have several limitations, such as high cost, slow kinetics, and low performance.…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Driven Photocatalytic Rhodamine B Degradation Using CdS Nanorods

2021

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In this work, highly crystalline CdS nanorods (NRs) were successfully synthesized by a facile, one-step solvothermal method. The as-prepared CdS NRs powder was characterized by XRD, FESEM, Raman, PL, XPS, BET, and UV-visible techniques to evaluate the structural, morphological, and optical properties. The photocatalytic performance of the as-synthesized CdS NRs was investigated for the photodegradation of RhB dye under visible light irradiations. It has been found that CdS NRs show maximum RhB degradation efficiency of 88.4% in 120 min. The excellent photodegradation ability of the CdS NRs can be attributed to their rod-like structure together with their large surface area and surface state. The kinetic study indicated that the photodegradation process was best described by the pseudo-first-order kinetic model. The possible mechanism for the photodegradation of RhB dye over CdS NRs was proposed in this paper.

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Section: Introductionmentioning

confidence: 99%

Visible Light-Driven Photocatalytic Rhodamine B Degradation Using CdS Nanorods

2021

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“…The FTIR spectra of T-BC4 are presented in Figure S2. The bending vibration at 459.88 cm −1 stands for the O-Si-O peak [40]. The peak at 559.98 cm −1 represents the Fe-O.…”

Section: Ftir Analysis and Sem Of The Biocharmentioning

confidence: 99%

Effect of a Passivator Synthesized by Wastes of Iron Tailings and Biomass on the Leachability of Cd/Pb and Safety of Pak Choi (Brassica chinensis L.) in Contaminated Soil

Yang

2021

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Cadmium (Cd) and lead (Pb) carry a high heavy-metal-toxic risk for both animals and plants in soil. In this study, iron-based biochar (T-BC) was prepared by co-pyrolysis using wastes of iron tailings and biomass with urea as the functioning agents. Field-emission scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and toxicity-characteristic leaching procedure (TCLP) methods were employed to analyze the physicochemical characteristics of T-BC. Additionally, a pot trial was conducted to examine the effects of T-BC on the physiological characteristics of pak choi (Brassica campestris L.), the availability of heavy metals, and enzyme activities in the soils. The results show that toxic metals have been volatilized by the roasting process and immobilized within T-BC via the formation of stable metal-compounds during the co-pyrolysis process, which satisfies the requirements of a soil passivator. Incubation experiments showed that the DTPA-extractable Cd and Pb in contaminated soils decreased with an increasing amendment rate. Moreover, in the pot experiments, by adding 1% (w/w) T-BC into soils, the soils benefited from its large adsorption, complex precipitation, and immobilization capacity. Approximately 36% Cd and 29% Pb concentrations of edible parts in pak choi were reduced. The amendment proved promising for the stabilization of Cd and Pb in contaminated soils, while providing a strategy for solving the residual waste of tailings and biomass.

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“…20,21 In spite of everything, methylene blue is surely one of the most used dye in textile industries and, for this reason, the developing of new strategies for the efficient removal from water effluents is still ongoing and of great interest. [22][23][24][25][26][27] The common methods for the removal of organic dyes include: chemical oxidation or reduction, 28 precipitation, 29 ion exchange, 30 electrolysis, 31 photo-catalytic processes, 32,33 membrane ltration, 34 ozonation, 35 degradation, 36 bio-sorption 37 and adsorption. 38,39 In particular, adsorption is one of the most used techniques because it relies on a simple mechanism, does not produce handling problems, and the process can be reversible.…”

Section: Introductionmentioning

confidence: 99%