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
收藏
页码：257 / 263
页数：7
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