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A Novel Nitrogen Enriched Hydrochar Adsorbents Derived from Salix Biomass for Cr (VI) Adsorption.

Identifieur interne : 000761 ( Main/Corpus ); précédent : 000760; suivant : 000762

A Novel Nitrogen Enriched Hydrochar Adsorbents Derived from Salix Biomass for Cr (VI) Adsorption.

Auteurs : Yanqiu Lei ; Haiquan Su ; Fuli Tian

Source :

Scientific reports [ 2045-2322 ] ; 2018.

RBID : pubmed:29511215

Abstract

Hydrochars were prepared from Salix by hydrothermal carbonization, and characterized by FT-IR, ¹³C NMR, XPS, UV-vis, TG, SEM and BET techniques. The results showed that the hydrochars with molecular sieve-type open pore structure contained numbers of oxygen and nitrogen functional groups, which benefited the adsorption and diffusion of adsorbent Cr (VI). The hydrochar obtained from 26 h reaction (HC-26) was indicated an excellent adsorbent compared to the commercial activated carbon, and its maximum removal efficiency for Cr (VI) reaches up to 99.84% at pH 1. Langmuir´s model is well fitted the experimental equilibrium adsorption data of total Cr. The bath experiment results showed that Cr (VI) could be removed rapidly in the first 300 min. Furthermore, the adsorption kinetics process of HC-26 could be described by pseudo-second-order model. Based on the above results, HC-26 could be acted as a potential efficient adsorbent for removal of Cr (VI) from aqueous solution.

DOI: 10.1038/s41598-018-21238-8
PubMed: 29511215
PubMed Central: PMC5840138

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pubmed:29511215

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<author><name sortKey="Lei, Yanqiu" sort="Lei, Yanqiu" uniqKey="Lei Y" first="Yanqiu" last="Lei">Yanqiu Lei</name>
<affiliation><nlm:affiliation>School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, 010021, Inner Mongolia, China.</nlm:affiliation>
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<author><name sortKey="Su, Haiquan" sort="Su, Haiquan" uniqKey="Su H" first="Haiquan" last="Su">Haiquan Su</name>
<affiliation><nlm:affiliation>School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, 010021, Inner Mongolia, China. haiquansu@yahoo.com.</nlm:affiliation>
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<author><name sortKey="Tian, Fuli" sort="Tian, Fuli" uniqKey="Tian F" first="Fuli" last="Tian">Fuli Tian</name>
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<front><div type="abstract" xml:lang="en">Hydrochars were prepared from Salix by hydrothermal carbonization, and characterized by FT-IR, <sup>13</sup>
C NMR, XPS, UV-vis, TG, SEM and BET techniques. The results showed that the hydrochars with molecular sieve-type open pore structure contained numbers of oxygen and nitrogen functional groups, which benefited the adsorption and diffusion of adsorbent Cr (VI). The hydrochar obtained from 26 h reaction (HC-26) was indicated an excellent adsorbent compared to the commercial activated carbon, and its maximum removal efficiency for Cr (VI) reaches up to 99.84% at pH 1. Langmuir´s model is well fitted the experimental equilibrium adsorption data of total Cr. The bath experiment results showed that Cr (VI) could be removed rapidly in the first 300 min. Furthermore, the adsorption kinetics process of HC-26 could be described by pseudo-second-order model. Based on the above results, HC-26 could be acted as a potential efficient adsorbent for removal of Cr (VI) from aqueous solution.</div>
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<Abstract><AbstractText>Hydrochars were prepared from Salix by hydrothermal carbonization, and characterized by FT-IR, <sup>13</sup>
C NMR, XPS, UV-vis, TG, SEM and BET techniques. The results showed that the hydrochars with molecular sieve-type open pore structure contained numbers of oxygen and nitrogen functional groups, which benefited the adsorption and diffusion of adsorbent Cr (VI). The hydrochar obtained from 26 h reaction (HC-26) was indicated an excellent adsorbent compared to the commercial activated carbon, and its maximum removal efficiency for Cr (VI) reaches up to 99.84% at pH 1. Langmuir´s model is well fitted the experimental equilibrium adsorption data of total Cr. The bath experiment results showed that Cr (VI) could be removed rapidly in the first 300 min. Furthermore, the adsorption kinetics process of HC-26 could be described by pseudo-second-order model. Based on the above results, HC-26 could be acted as a potential efficient adsorbent for removal of Cr (VI) from aqueous solution.</AbstractText>
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A Novel Nitrogen Enriched Hydrochar Adsorbents Derived from Salix Biomass for Cr (VI) Adsorption.

A Novel Nitrogen Enriched Hydrochar Adsorbents Derived from Salix Biomass for Cr (VI) Adsorption.

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Abstract

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