Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures.

doi:10.1016/J.BIORTECH.2013.06.033

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Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures.

Journal Article•DOI•

Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures.

Mahtab Ahmad¹, Sang Soo Lee¹, Anushka Upamali Rajapaksha¹, Meththika Vithanage¹, Ming Zhang², Ju Sik Cho³, Sung-Eun Lee⁴, Yong Sik Ok¹, Yong Sik Ok² - Show less +5 more•Institutions (4)

Kangwon National University¹, China Jiliang University², Sunchon National University³, Kyungpook National University⁴

01 Sep 2013-Bioresource Technology (Elsevier)-Vol. 143, pp 615-622

TL;DR: In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700 °C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated, indicating prevailing sorption mechanism as pore-filling.

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About: This article is published in Bioresource Technology.The article was published on 2013-09-01. It has received 332 citations till now. The article focuses on the topics: Freundlich equation & Adsorption.

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Journal Article•DOI•

Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent--a critical review.

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Dinesh Mohan¹, Ankur Sarswat¹, Yong Sik Ok², Charles U. Pittman³•Institutions (3)

Jawaharlal Nehru University¹, Kangwon National University², Mississippi State University³

01 May 2014-Bioresource Technology

TL;DR: A review of recent applications of biochars, produced from biomass pyrolysis (slow and fast), in water and wastewater treatment, and a few recommendations for further research have been made in the area of biochar development for application to water filtration.

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1,738 citations

Cites background from "Trichloroethylene adsorption by pin..."

...Feed stock pyrolyses into biochars have been conducted on debarked loblolly pine (Pinus taeda) chips (Park et al., 2013) oak wood, pine wood, oak bark and pine bark (Mohan et al., 2007b), pine needles (Ahmad et al., 2013a), corn stover and apple wood (Sun et al., 2012) among many others....
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...Biochar use in soil remediation, carbon sequestration, climate change mitigation, and carbon farming have been critically reviewed (Ahmad et al., 2013b; Lehmann, 2007; Lehmann et al., 2006; Sohi et al., 2009)....
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...Soybean stover, peanut shells and pine needles were pyrolyzed (Ahmad et al., 2012, 2013a)....
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Journal Article•DOI•

Application of biochar for the removal of pollutants from aqueous solutions.

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Xiaofei Tan¹, Yunguo Liu¹, Guangming Zeng¹, Xin Wang², Xinjiang Hu¹, Yanling Gu¹, Zhongzhu Yang¹ - Show less +3 more•Institutions (2)

Hunan University¹, Hunan Normal University²

01 Apr 2015-Chemosphere

TL;DR: An overview of biochar production technologies, biochar properties, and recent advances in the removal of heavy metals, organic pollutants and other inorganic pollutants using biochar is provided.

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1,301 citations

Cites background or result from "Trichloroethylene adsorption by pin..."

...Ahmad et al. (2013a) found that the presence of more carbonized matters in the biochars produced at high pyrolytic temperatures caused greater adsorption of trichloroethylene (TCE)....
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...The change of biochar pH is consistent with the Boehm titration results, which indicated that total acidity in the biochars decreased, while total basicity increased remarkably with increasing pyrolytic temperature (Ahmad et al., 2013a)....
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...While, nearly 15–25% of biochar still remained even temperature up to 700 C (Ahmad et al., 2012, 2013a; Oh et al., 2012; Chen et al., 2012b; Qian and Chen, 2013), which confirmed the thermal stability of biochar as an adsorbent....
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...Similar conclusions of greater adsorption capacity with higher pyrolytic temperature were also drawn by Zhou et al. (2010) and Ahmad et al. (2013a)....
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...However, very little review article describe the use of biochar for the removal of pollutants in water (Ahmad et al., 2013b)....
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Journal Article•DOI•

Adsorption of VOCs onto engineered carbon materials: A review

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Xueyang Zhang¹, Bin Gao¹, Anne Elise Creamer¹, Chengcheng Cao², Yuncong Li¹ - Show less +1 more•Institutions (2)

University of Florida¹, Xuzhou Institute of Technology²

15 Sep 2017-Journal of Hazardous Materials

TL;DR: This review discusses recent research developments of VOC adsorption onto a variety of engineered carbonaceous adsorbents, including activated carbon, biochar, activated carbon fiber, carbon nanotube, graphene and its derivatives, carbon-silica composites, ordered mesoporous carbon, etc.

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915 citations

Journal Article•DOI•

Progress in the preparation and application of modified biochar for improved contaminant removal from water and wastewater

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Mohammad Boshir Ahmed¹, John L. Zhou¹, Huu Hao Ngo¹, Wenshan Guo¹, Mengfang Chen² - Show less +1 more•Institutions (2)

University of Technology, Sydney¹, Chinese Academy of Sciences²

01 Aug 2016-Bioresource Technology

TL;DR: Modified biochar (BC) is reviewed in its preparation, functionality, applications and regeneration, and the Langmuir isotherm model provides the best fit for sorption equilibria of heavy metals and anionic contaminants and the pseudo 2(nd) order is the most appropriate model of sorption kinetics for all contaminants.

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558 citations

Journal Article•DOI•

Chlorinated volatile organic compounds (Cl-VOCs) in environment - sources, potential human health impacts, and current remediation technologies.

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Binbin Huang¹, Chao Lei², Chaohai Wei³, Guangming Zeng¹•Institutions (3)

Hunan University¹, Changsha University of Science and Technology², South China University of Technology³

01 Oct 2014-Environment International

TL;DR: This review presents a summary of the research concerning the production levels and sources of Cl-VOCs, their potential impacts on human health as well as state-of-the-art remediation technologies.

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551 citations

Cites background from "Trichloroethylene adsorption by pin..."

..., 2012), biochar (Ahmad et al., 2014), sol-gel substrates (Hernández et al....
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...…carbons (Alwary et al., 2011; Yanga et al., 2009), muti-walled carbon nanotubes (Naghizadeh et al., 2011), graphene (Åkesson et al., 2012), biochar (Ahmad et al., 2014), sol-gel substrates (Hernández et al., 2009), and organic mulch (Wei and Seo, 2010) have been developed for the removal of…...
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References

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Journal Article•DOI•

Insights into the modeling of adsorption isotherm systems

[...]

K.Y. Foo¹, B.H. Hameed¹•Institutions (1)

Universiti Sains Malaysia¹

01 Jan 2010-Chemical Engineering Journal

TL;DR: In this paper, the authors present a review of the state-of-the-art in isotherm modeling, its fundamental characteristics and mathematical derivations, as well as the key advance of the error functions, its utilization principles together with the comparisons of linearized and nonlinearized isotherms models have been highlighted and discussed.

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5,914 citations

"Trichloroethylene adsorption by pin..." refers background or result in this paper

...In contrast, relatively lower values of b were produced from BC500 and BC700 compared to those of BC300 and BM, showing that a linear decrease in the heat of adsorption resulted in greater coverage of TCE on the surface layer (Foo and Hameed, 2010)....
[...]
...The porous structure of the sorbents, particularly the BCs, facilitates the adsorption of TCE into the micro- and meso-pores following the pore-filling mechanism (Foo and Hameed, 2010)....
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Book•

Adsorption by Powders and Porous Solids: Principles, Methodology and Applications

[...]

Françoise Rouquerol, Jean Rouquerol, Kenneth S. W. Sing

05 Oct 1998

TL;DR: In this paper, the authors provide an introductory review of the various theoretical and practical aspects of adsorption by powders and porous solids with particular reference to materials of technological importance.

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Abstract: The declared objective of this book is to provide an introductory review of the various theoretical and practical aspects of adsorption by powders and porous solids with particular reference to materials of technological importance. The primary aim is to meet the needs of students and non-specialists, who are new to surface science or who wish to use the advanced techniques now available for the determination of surface area, pore size and surface characterization. In addition, a critical account is given of recent work on the adsorptive properties of activated carbons, oxides, clays and zeolites. Key Features * Provides a comprehensive treatment of adsorption at both the gas/solid interface and the liquid/solid interface * Includes chapters dealing with experimental methodology and the interpretation of adsorption data obtained with porous oxides, carbons and zeolites * Techniques capture the importance of heterogeneous catalysis, chemical engineering and the production of pigments, cements, agrochemicals, and pharmaceuticals

...read moreread less

3,128 citations

Journal Article•DOI•

Dynamic molecular structure of plant biomass-derived black carbon (biochar)

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Marco Keiluweit¹, Peter S. Nico², Mark Johnson², Markus Kleber²•Institutions (2)

Oregon State University¹, United States Environmental Protection Agency²

25 Jan 2010-Environmental Science & Technology

TL;DR: A molecular-level assessment of the physical organization and chemical complexity of biomass-derived chars and, specifically, that of aromatic carbon in char structures suggests the existence of four distinct categories of char consisting of a unique mixture of chemical phases and physical states.

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Abstract: Char black carbon (BC), the solid residue of incomplete combustion, is continuously being added to soils and sediments due to natural vegetation fires, anthropogenic pollution, and new strategies for carbon sequestration (“biochar”). Here we present a molecular-level assessment of the physical organization and chemical complexity of biomass-derived chars and, specifically, that of aromatic carbon in char structures. Brunauer−Emmett−Teller (BET)−N2 surface area (SA), X-ray diffraction (XRD), synchrotron-based near-edge X-ray absorption fine structure (NEXAFS), and Fourier transform infrared (FT-IR) spectroscopy are used to show how two plant materials (wood and grass) undergo analogous but quantitatively different physical−chemical transitions as charring temperature increases from 100 to 700 °C. These changes suggest the existence of four distinct categories of char consisting of a unique mixture of chemical phases and physical states: (i) in transition chars, the crystalline character of the precursor ma...

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2,283 citations

"Trichloroethylene adsorption by pin..." refers background or methods in this paper

...The notable appearance of an absorption band at 874 cm 1 of –CH out-of-plane vibration in BC500 and BC700 indicated the condensation of smaller aromatic units into larger sheets (Keiluweit et al., 2010)....
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...Peak assignments were based on previous studies of Chen et al. (2008) and Keiluweit et al. (2010)....
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Journal Article•DOI•

Transitional Adsorption and Partition of Nonpolar and Polar Aromatic Contaminants by Biochars of Pine Needles with Different Pyrolytic Temperatures

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Baoliang Chen¹, Dandan Zhou¹, Lizhong Zhu¹•Institutions (1)

Zhejiang University¹

11 Jun 2008-Environmental Science & Technology

TL;DR: Biochars, produced by pyrolysis of pine needles at different temperatures, were characterized by elemental analysis, BET-N2 surface areas and FTIR, and Sorption isotherms of naphthalene, nitrobenzene, and m-dinitrobenZene from water to the biochars were compared.

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Abstract: The combined adsorption and partition effects of biochars with varying fractions of noncarbonized organic matter have not been clearly defined. Biochars, produced by pyrolysis of pine needles at different temperatures (100-700 degrees C, referred as P100-P700), were characterized by elemental analysis, BET-N2 surface areas and FTIR. Sorption isotherms of naphthalene, nitrobenzene, and m-dinitrobenzene from water to the biochars were compared. Sorption parameters (N and logKf) are linearly related to sorbent aromaticities, which increase with the pyrolytic temperature. Sorption mechanisms of biochars are evolved from partitioning-dominant at low pyrolytic temperatures to adsorption-dominant at higher pyrolytic temperatures. The quantitative contributions of adsorption and partition are determined by the relative carbonized and noncarbonized fractions and their surface and bulk properties. The partition of P100-P300 biochars originates from an amorphous aliphatic fraction, which is enhanced with a reduction of the substrate polarity; for P400-P600, the partition occurs with a condensed aromatic core that diminishes with a further reduction of the polarity. Simultaneously, the adsorption component exhibits a transition from a polarity-selective (P200-P400) to a porosity-selective (P500-P600) process, and displays no selectivity with P700 and AC in which the adsorptive saturation capacities are comparable to predicted values based on the monolayer surface coverage of molecule.

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1,449 citations

"Trichloroethylene adsorption by pin..." refers background or methods or result in this paper

...Peak assignments were based on previous studies of Chen et al. (2008) and Keiluweit et al. (2010)....
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...…due to the removal of water molecules, which was further reduced and even disappeared at 500 and 700 C. Similarly, aliphatic –CH2 bands at 2920, 2851, and 1456 cm 1 decreased significantly in BCs produced at higher temperatures, indicating a decrease in polar functional groups (Chen et al., 2008)....
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...These findings agree with the recently published study reporting the high adsorption capacity of BCs due to high surface area (Chen et al., 2008)....
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...Consequently, the presence of more carbonized matter in the BCs produced at high pyrolysis temperatures caused greater adsorption of TCE in BC500 and BC700, whereas the presence of less carbonized matter in BC300 and BM hindered their adsorptive properties (Ahmad et al., 2012a; Chen et al., 2008)....
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...Similarly, aliphatic –CH2 bands at 2920, 2851, and 1456 cm 1 decreased significantly in BCs produced at higher temperatures, indicating a decrease in polar functional groups (Chen et al., 2008)....
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Journal Article•DOI•

The Art, Science, and Technology of Charcoal Production†

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Michael Jerry Antal¹, Morten Grønli²•Institutions (2)

University of Hawaii at Manoa¹, SINTEF²

14 Mar 2003-Industrial & Engineering Chemistry Research

TL;DR: In this article, the authors summarize the knowledge of the production and properties of charcoal that has been accumulated over the past 38 millenia and summarize the potential of charcoal as a renewable fuel.

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Abstract: In this review, we summarize the knowledge of the production and properties of charcoal that has been accumulated over the past 38 millenia. The manipulation of pressure, moisture content, and gas flow enables biomass carbonization with fixed-carbon yields that approachor attainthe theoretical limit after reaction times of a few tens of minutes. Much of the heat needed to carbonize the feed is released by vigorous, exothermic secondary reactions that reduce the formation of unwanted tars by augmenting the charcoal yield in a well-designed carbonizer. As a renewable fuel, charcoal has many attractive features: it contains virtually no sulfur or mercury and is low in nitrogen and ash; it is highly reactive yet easy to store and handle. Carbonized charcoal can be a good adsorbent with a large surface area and a semimetal with an electrical resistivity comparable to that of graphite. Recent advances in knowledge about the production and properties of charcoal presage its expanded use as a renewable fuel, red...

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1,402 citations

"Trichloroethylene adsorption by pin..." refers background in this paper

...This can be explained by the removal of volatile matter and the emission of H2O, CO2, CO, CH4, and H2 due to the relatively high temperatures (Antal and Grønli, 2003)....
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