Magnetic-responsive CNT/chitosan composite as stabilizer and adsorbent for organic contaminants and heavy metal removal

Jin, Jiafeng; Sun, Jinsheng; Lv, Kaihe; Huang, Xianbin; Wang, Jintang; Liu, Jingping; Bai, Yingrui; Guo, Xuan; Zhao, Jianwei; Liu, Jia; Hou, Qilin

doi:10.1016/j.molliq.2021.116087

Cited by 33 publications

(5 citation statements)

References 44 publications

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“…The Zeta potential correlates with the stability of drilling fluids. The larger the absolute value, the more stable the drilling fluids are 30 . Therefore, the effect of the PCAA on the stability of the drilling fluid was examined by Zeta potential analysis (Figure 11).…”

Section: Resultsmentioning

confidence: 99%

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Zhou

Ren

et al. 2023

J of Applied Polymer Sci

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During drilling in deep formations, it is challenging to form an effective plug to avoid borehole collapse under high temperatures and pressures. In order to simultaneously improve the high‐temperature resistance and interparticle interaction capability of traditional plugging agents, a new gel plugging agent (PCAA) with self‐healing capability was developed using chitosan, acrylamide, and acrylic acid. The rheological properties of the PCAA indicate that all monomers of PCAA are essential components to improve the performance of the plugging agent. Each monomer has a unique capability, such as acrylamide playing a dominant role in the construction of the gel network, acrylic acid enhancing the gel structure, and chitosan improving the gel adhesion. PCAA can be stretched to 8.8 times prolonged, and its tensile stresses and self‐healing rate in 16 h are 17.2 kPa and 78.5%, respectively. Under the extreme conditions of 180°C and 8% NaCl, PCAA still performs well in preventing drilling fluid from invading the sand layer due to its self‐healing and plugging effects. In addition, the interaction of PCAA and clay improves the stability, rheological properties, and filtration reduction of drilling fluids at high temperatures. The developed PCAA has been successfully applied to the field with extreme conditions, providing insights into plugging agent design.

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Section: Resultsmentioning

confidence: 99%

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Zhou

Ren

et al. 2023

J of Applied Polymer Sci

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“…5). According to the results from adsorption kinetic and isotherm, the π-π interaction and electrostatic effect dominate the adsorption process (Jin et al, 2021). The π-π interaction occurs between the double benzene rings on TCS and the organic building units with carboncarbon linkages (Li et al, 2020b;Song et al, 2019) on NPVMo@iPAF-1 (Fig.…”

Section: Npvmo@ipaf-1 Adsorption Mechanismsmentioning

confidence: 99%

Effective triclosan removal by using porous aromatic frameworks in continuous fixed-bed column studies

Li,

Gong,

Yang

et al. 2023

Environ Sci Pollut Res

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“…Kinetika adsorpsi ditentukan dengan cara diplotkan grafik antara waktu kontak dengan ln (qe-qt) (Persamaan 1) untuk orde satu semu, serta antara waktu kontak dengan t/Qt (Persamaan 2) untuk orde dua semu (Jin et al, 2021). Hasil plot grafik menunjukkan regresi linier (R 2 ) untuk orde satu semu adalah 0,4285 (nanokitosan DD 85%); 0,2913 (nanokitosan DD 87%); 0,0141 (nanokitosan DD 95%) dan untuk orde dua semu untuk ketiga nanokitosan semua nilai regresi liner nya 0,99, sehingga kinetika adsorpsi pada penelitian ini mengikuti reaksi orde dua semu.…”

Section: Penentuan Kinetika Adsorpsiunclassified

Utilization of Nanochitosan as Adsorbent of Mercury (Hg) in Gold Ore Processing Waste

Himawan

Darmokoesoemo²,

Ardiarto³

et al. 2022

Eksergi

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Mercury pollution in gold ore processing wastewater can cause environmental and health problems. A large amount of mercury pollution causes neurological disease, paralysis, loss of sense of taste, irregular speech, and death. One effective method to reduce mercury amount in the environment is adsorption. Adsorption performance is affected by several factors such as surface area of material, deacetylation degree (DD), and adsorption condition, which is indicated by contact time and mercury concentration. Nanochitosan is used in this research. Effect of deacetylation degree (85%; 87%; 95%), contact time (30;60;90;120 minutes), and variation of mercury concentration (5;10;15;20;25;30 ppm) on adsorption performance was investigated in this research. Nanochitosan in this research is characterized by FTIR, SEM-EDX, BET-BJH, and pH PZC. AAS measures adsorption performance in this research. The result shows that nanochitosan, which has the best adsorption performance, is nanochitosan with a deacetylation degree of 95%, at a contact time of 60 minutes, and mercury concentration is 15 ppm.

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Magnetic-responsive CNT/chitosan composite as stabilizer and adsorbent for organic contaminants and heavy metal removal

Cited by 33 publications

References 44 publications

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Study on self‐healing gel plugging agent based on non‐covalent bonding interaction for drilling fluid

Effective triclosan removal by using porous aromatic frameworks in continuous fixed-bed column studies

Utilization of Nanochitosan as Adsorbent of Mercury (Hg) in Gold Ore Processing Waste

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