Tailoring activated carbon properties for Pb(II) and Cr(VI) removal from water in continuous mode

Amine functionalized and Fe3O4 incorporated activated carbon for bisphenol-A separation

Water Science & Technology ◽

10.2166/wst.2019.175 ◽

2019 ◽

Vol 79 (9) ◽

pp. 1755-1765 ◽

Cited By ~ 3

Author(s):

Drishti Bhatia ◽

Sakshi Batra ◽

Dipaloy Datta

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Bisphenol A ◽

Fixed Bed ◽

Industrial Effluent ◽

Aliquat 336 ◽

Continuous Mode ◽

Batch Mode ◽

Fixed Bed Adsorption ◽

Gibb’S Free Energy

Abstract Activated carbon (AC) is the most commonly used adsorbent for water purification, although the dispersive nature of AC in aqueous solution poses a serious problem. To overcome this limitation, AC was magnetized with iron oxide using iron salts as precursor. Further to enhance its effectiveness, it was impregnated with Aliquat 336. Different characterization techniques (Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), along with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD)) were used to analyze the adsorbent. Furthermore, the value of the pH at which the overall charge on the surface of the adsorbent is neutral was found by pH drift method. The modified form of the activated carbon was used to treat the aqueous solution of bisphenol-A in the batch as well as in the continuous mode of operation. In batch mode, the data were validated using equilibrium and kinetic models, and in continuous mode, data were fitted with the Thomas, Adams-Bohart, and bed depth service time (BDST) fixed bed adsorption models. Also, the changes in Gibb's free energy, enthalpy, and entropy were estimated from the temperature study. The design of an adsorption column is proposed to treat 10,000 L/day of an industrial effluent containing BPA.

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Thermal stability and decomposition of perfluoroalkyl substances on spent granular activated carbon

10.1021/scimeetings.0c06806 ◽

2020 ◽

Author(s):

Feng Xiao ◽

Bin Yao ◽

Pavankumar Challa Sasi ◽

Svetlana Golovko ◽

Dana Soli ◽

...

Keyword(s):

Thermal Stability ◽

Activated Carbon ◽

Granular Activated Carbon ◽

Perfluoroalkyl Substances

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Modification of activated carbon fiber pore structure by coke deposition

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2001335 ◽

2001 ◽

Vol 11 (PR3) ◽

pp. Pr3-279-Pr3-286

Author(s):

X. Dabou ◽

P. Samaras ◽

G. P. Sakellaropoulos

Keyword(s):

Activated Carbon ◽

Carbon Fiber ◽

Pore Structure ◽

Activated Carbon Fiber ◽

Coke Deposition

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Enhancing the power generation of Rhodopseudomonas palustris-based MFC

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209444 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 1261-1268

Author(s):

Shu Otani ◽

Dang-Trang Nguyen ◽

Kozo Taguchi

Keyword(s):

Activated Carbon ◽

Rhodopseudomonas Palustris ◽

Ozone Treatment ◽

Maximum Power Density ◽

On Demand ◽

Long Time ◽

Dry Conditions ◽

Carbon Sheet ◽

Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

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