Author
Kaifang Fu
Bio: Kaifang Fu is an academic researcher from Shandong University. The author has contributed to research in topics: Adsorption & Activated carbon. The author has an hindex of 7, co-authored 9 publications receiving 723 citations.
Topics: Adsorption, Activated carbon, Desorption, Catalysis, BET theory
Papers
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TL;DR: The MCS column study states the value of the excellent adsorption capacity for the removal of Cr(VI) from aqueous solution that is useful for process design.
409 citations
TL;DR: In this paper, a two-step approach was carried out, firstly carbonized in an oxygen-free atmosphere and subsequently activated with steam, and experiments were performed to investigate the influences of different preparation parameters such as carbonization temperature, activation temperature and activation time on the pore texture characteristics of the products in detail by nitrogen adsorption analysis.
223 citations
TL;DR: In this article, the authors explored microbial species, community structures and functional profiles to explain the strong degradation capability of the combined up-flow anaerobic filter and upflow biological aerated filter (UAF-UBAF) system with novel sludge and coal cinder ceramsite for treating tetracycline (TET) wastewater.
76 citations
TL;DR: In this paper, the feasibility of FeCl 2 as a novel activating agent to prepare activated carbons from tomato stem (TS) was investigated by using N 2 adsorption/desorption isotherms at 77 K.
75 citations
TL;DR: In this paper, the physicochemical properties of the activated carbons were investigated by N2 sorption/desorption isotherms, XRD, SEM, TEM, FTIR and Boehm's titration.
Abstract: Four kinds of iron salts, ferric chloride (FeCl3), ferrous chloride (FeCl2), ferric citrate (FeC6H5O7) and ferrous oxalate (FeC2O4) were employed as activating agents to prepare activated carbons (AC–FeCl3, AC-FeCl2, AC-FeC6H5O7 and AC-FeC2O4) from Arundo donax Linn (AL). The physicochemical properties of the activated carbons were investigated by N2 sorption/desorption isotherms, XRD, SEM, TEM, FTIR and Boehm's titration. The surface area and micropore volume of AC-FeCl3 and AC-FeCl2 were much higher than those of AC-FeC6H5O7 and AC-FeC2O4. Among the four carbons, AC-FeC6H5O7 displayed the highest external surface area and total pore volume. Boehm's titration results showed that AC-FeCl3 and AC-FeCl2 had more acidic oxygen functionalities than AC-FeC6H5O7 and AC-FeC2O4. Batched sorption studies were carried out to study adsorptive properties of the activated carbons toward cephalexin (CEX). The maximum CEX adsorption capacities of AC-FeCl3 (285.714 mg/g) and AC-FeCl2 (238.095 mg/g) were higher than those of AC-FeC6H5O7 (227.273 mg/g) and AC-FeC2O4 (113.636 mg/g), resulting from Lewis acid–base interaction, electrostatic interaction and hydrophobic interaction.
52 citations
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TL;DR: A review of the use of lignin in polymer applications can be found in this paper, where both the direct use of Lignin and the chemical modifications of it are discussed from a polymer chemistry perspective.
Abstract: Next to cellulose, lignin is the second most abundant biopolymer, and the main source of aromatic structures on earth. It is a phenolic macromolecule, with a complex structure which considerably varies depending on the plant species and the isolation process. Lignin has long been obtained as a by-product of cellulose in the paper pulp production, but had rather low added-value applications. Changes in the paper market have however stimulated the need to focus on other applications for lignins. In addition, the emergence of biorefinery projects to develop biofuels, bio-based materials and chemicals from carbohydrate polymers should also generate large amounts of lignin with the potential for value addition. These developments have brought about renewed interest in the last decade for lignin and its potential use in polymer materials. This review covers both the topics of the direct use of lignin in polymer applications, and of the chemical modifications of lignin, in a polymer chemistry perspective. The future trend toward micro- and nanostructured lignin-based materials is then addressed.
564 citations
TL;DR: Compared with traditional activated carbon, activated biochar appears to be a new potential cost-effective and environmentally-friendly carbon materials with great application prospect in many fields.
457 citations
TL;DR: This study proves the potential of novel nonmetal porous photocatalyst to simultaneously treat wastewater while converting solar energy into clean hydrogen energy.
426 citations
TL;DR: In this paper, a review of the current approaches and strategies for the thermochemical conversion of lignin to functional carbon materials is presented, where the transformation behavior and mechanism of Lignin during thermochemical process (e.g., pyrolysis and hydrothermal carbonization) are illuminated.
416 citations
TL;DR: In this article, a review of fixed-bed column studies for removal of various contaminants from synthetic wastewater is presented, in which adsorption of chromium metal is most exploitable.
Abstract: Present paper involved the review of fixed-bed column studies for removal of various contaminants from synthetic wastewater. Basic concept of adsorption, its types (i.e., chemisorption and physisorption) and its mechanism, adsorbents and adsorbates were included. Comparison of batch and column adsorption study is mentioned. Complete study of breakthrough curve for designing adsorptive column is interpreted. This paper explicates the detailed explanation of various process parameters and isotherm models for column study. Fixed-bed adsorption studies using various adsorbates, i.e., metal, ion, dye and other hazardous materials, are reviewed, in which adsorption of chromium metal is most exploitable. Conclusion and some challenges for utilization in real world are also exposed.
351 citations