Humic Acid Derived Resin: An Efficient Adsorbent for Au(III) Uptake from Aqueous Acidic Solution

Chen, Xiangmeng; Yang, Xingchuan; Xiang, Yong; Liu, Guoji

doi:10.1021/acs.jced.9b01085

Cited by 13 publications

(9 citation statements)

References 34 publications

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“…The absorption peaks at 2959 and 1446 cm -1 belonged to the antisymmetric stretching and deformation vibration of the -CH 2 group, and the peaks at 1674 and 857 cm -1 corresponded to the stretching vibration of C=C and C-H bond on the benzene ring skeleton, respectively. These indirectly reflected the characteristic structure of the DT017 resin skeleton [5] . The absorption peaks at 1180 cm -1 , 1073 cm -1 , 1036 cm -1 , and 621 cm -1 correspond to the structure of S=O AMCE-2023 Journal of Physics: Conference Series 2713 (2024) 012078…”

Section: Performance Testingmentioning

confidence: 99%

Study on Novel Pd-impregnated Catalyst for Synthesis of 2-Arylpropanoic Acids by Hydrocarboxylation

Ma,

Tao,

Guo

et al. 2024

J. Phys.: Conf. Ser.

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In the hydrocarboxylation of the Pd-based catalyst, the heterogeneity of homogeneous processes was a reliable means to improve the recyclability of the catalyst and to inhibit the loss of noble metals. Herein, a novel heterogeneous Pd@DT017 catalyst prepared from Pd(II) salt impregnated in the acidic resin of DT017 had been studied, which revealed high performance. Correcting characterization showed that Pd(II) was successfully grafted to -SO3 - on the surface of DT017, and the Pd element was highly dispersed in DT017 with the macroporous structure. The conversion was 99.9%, and the yield of isomeric acid was 91.6% on Pd@DT017. The stability test found that Pd@DT017 had higher cycle stability.

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Section: Performance Testingmentioning

confidence: 99%

Study on Novel Pd-impregnated Catalyst for Synthesis of 2-Arylpropanoic Acids by Hydrocarboxylation

Ma,

Tao,

Guo

et al. 2024

J. Phys.: Conf. Ser.

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“…4,5 The pretreatment of wastewater can easily recover the noble metal and benefit for the sustainable development. 6 During past decades, a variety of adsorbents, including active carbon, 7,8 humic acid-derived resin, 9 and coal gasification slag, 10 have been exploited for the purpose. However, due to low porosity and insufficient functional groups, their practical applications suffer from poor adsorption capacity, slow adsorption kinetics, and weak selectivity.…”

Section: ■ Introductionmentioning

confidence: 99%

Solvothermal Preparation of Microporous Polyureas for Au(III) Adsorption

Lin,

Chen,

Lei

et al. 2024

Langmuir

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The enrichment and recovery of gold from wastewater are an alternative method to obtain this noble metal, which benefits reducing hazardous emissions from the conventional ore mining process and reserving natural gold for sustainable development. Inspired by our previous work (Lei et al., Macromol. Rapid Comm. 2022, 2200712), four families of microporous polyureas (mPPUs) with a large surface area (690 m2 g–1) and abundant heteroatom sites have been prepared via the factor-optimized solvothermal protocol. The resultant sample NPU-A starting from 1,5-naphthalene diisocyanate (NDI) and tri(4-aminophenyl) amine (TAPA) exhibits the maximum Au(III) adsorption capacity of 1300 mg g–1 and high selectivity even when the Au(III) concentration is as low as 0.1 mg L–1. This study not only demonstrates the robustness of the high-throughput synthetic strategy but also promotes the investigation of the structure–activity correlation between the mPPU chemical structure and Au(III) adsorption performance.

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“…In order to utilize the ability of humic acid to absorb and reduce gold ions, and to improve the disadvantages of it as an adsorbent, in our previous work [25] , humic acid-derived resin (HAR) was prepared using humic acid as the functional component and phenolic resin as the matrix structure, without using surfactants and template. The phenolic resin was employed because it has the characteristics of low smoke, non-toxicity and easy preparation.…”

Section: Introductionmentioning

confidence: 99%

Rapid uptake of gold ions by sulfonated humic acid modified phenolic resin with high adsorption capacity and selectivity

Hou

Xiang

et al. 2023

Adv Compos Hybrid Mater

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Adsorption capacity, selectivity and adsorption rate are all important indicators to judge the performance of an adsorbent. At present, most of the studies on gold recovery with adsorbents have weakened the consideration of adsorption e ciency. Therefore, there is a need to develop an adsorbent with fast adsorption rate for gold ions to ensure high adsorption capacity and selectivity. Here, we report two humic acid-derived sulfonated resins (SHAR and NSHAR) using sulfuric acid and sodium sul te as sulfonating agents respectively, which were prepared by a simple two-step method using water as solvent. They can recover Au(III) quickly and e ciently from mixed metals (Fe(III), Mn( ), Cu( ), Cr(III), Mg( ), Ni( ), Sn( ), Co( ), Pb( ) and Zn( )). Adsorption behavior and mechanism of Au(III) on SHAR and NSHAR were studied. The Freundlich isotherm model and the Pseudo-second-order kinetic model are suitably for the description of Au(III) behavior meaning that the process belongs to multi-molecular chemical adsorption.Furthermore, adsorption thermodynamic study indicates that the adsorption of Au(III) on SHAR and NSHAR is endothermic and spontaneous. Different from conventional adsorbents, Au(III) are reduced to element gold and deposited on the adsorbent. NSHAR takes only 10 min to reach adsorption equilibrium, and the adsorption capacity is up to 927 mg•g − 1 (SHAR needs 50 min with capacity of 1440 mg•g − 1 ). This research provides a new scheme and idea for quickly and e ciently recovering gold.

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Humic Acid Derived Resin: An Efficient Adsorbent for Au(III) Uptake from Aqueous Acidic Solution

Cited by 13 publications

References 34 publications

Study on Novel Pd-impregnated Catalyst for Synthesis of 2-Arylpropanoic Acids by Hydrocarboxylation

Study on Novel Pd-impregnated Catalyst for Synthesis of 2-Arylpropanoic Acids by Hydrocarboxylation

Solvothermal Preparation of Microporous Polyureas for Au(III) Adsorption

Rapid uptake of gold ions by sulfonated humic acid modified phenolic resin with high adsorption capacity and selectivity

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