Highly adsorptive oxidized starch nanoparticles for efficient urea removal

被引：57

作者：

Abidin, Muhammad Nidzhom Zainol ^{[1
]}

Goh, Pei Sean ^{[1
]}

Ismail, Ahmad Fauzi ^{[1
]}

Said, Noresah ^{[1
]}

Othman, Mohd Hafiz Dzarfan ^{[1
]}

Hasbullah, Hasrinah ^{[1
]}

Abdullah, Mohd Sohaimi ^{[1
]}

Ng, Be Cheer ^{[1
]}

Kadir, Siti Hamimah Sheikh Abdul ^{[2
]}

Kamal, Fatmawati ^{[2
]}

机构：

[1] Univ Teknol Malaysia, Adv Membrane Technol Res Ctr AMTEC, Skudai 81310, Johor Darul Taz, Malaysia

[2] Univ Teknol MARA, Fac Med, IMMB, Sungai Buloh Campus,Jalan Hosp, Sungai Buloh 47000, Selangor, Malaysia

来源：

CARBOHYDRATE POLYMERS | 2018年 / 201卷

关键词：

Oxidized starch nanoparticle; Urea adsorption; Dialysate regeneration system; Portable dialysis; MIXED MATRIX MEMBRANE; WEARABLE ARTIFICIAL-KIDNEY; AQUEOUS-SOLUTION; HYPOCHLORITE; HEMODIALYSIS; OXIDATION; PEROXIDE; SYSTEMS; AMINE;

D O I：

10.1016/j.carbpol.2018.08.069

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Portable dialysis is a need to implement daily and nocturnal hemodialysis. To realize portable dialysis, a dialysate regeneration system comprising superior adsorbents is required to regenerate the used dialysate. This study aims to develop a nano-adsorbent, derived from corn starch for urea removal. Oxidized starch nano-particles (oxy-SNPs) were prepared via liquid phase oxidation, followed by chemical dissolution and non-solvent precipitation. The oxy-SNPs possessed Z-average size of 177.7 nm with carbonyl and carboxyl contents of 0.068 and 0.048 per 100 glucose units, respectively. The urea adsorption achieved the equilibrium after 4 h with 95% removal. The adsorption mechanism fitted Langmuir isotherm while the adsorption kinetics obeyed pseudo-second-order model. This new material has a maximum adsorption capacity of 185.2 mg/g with a rate constant of 0.04 g/mg.h. Moreover, the oxy-SNPs exhibited the urea uptake recovery of 91.6%. Oxy-SNPs can become a promising adsorbent for dialysate regeneration system to remove urea.

引用

页码：257 / 263

页数：7

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