Malaysian Journal of Analytical Sciences Vol 23 No 1 (2019): 170 - 181

DOI: 10.17576/mjas-2019-2301-20






(Kesan Resin Purolit A400-Cu Terhadap Penjerapan Nitrat dan Nitrit dalam Rawatan Air Sisa)


Fatimah Batubara1, Chairani Selviani1, Muhammad Turmuzi1, Edy Herianto Majlan2,3*


1Chemical Engineering Department, Faculty of Engineering,

Universitas Sumatera Utara, Medan, 20155 Sumatera Utara, Indonesia

2Fuel Cell Institute,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

3Environmental Engineering Department,

Faculty of Environmental Engineering,

Institut Teknologi Yogyakarta, D.I Yogyakarta, 55171, Indonesia


*Corresponding author:



Received: 13 April 2017; Accepted: 17 April 2018




The exceedance of nitrate and nitrite concentrations over the water standard quality has caused potential human health dangers such as blue baby syndrome and the growth of aquatic plants (eutrophication). In this work, a Purolite A400 anion exchange resin impregnated by Cu (Purolite A400-Cu) is used to remove nitrate and nitrite in wastewater. High saturation capacities of 0.76 mg N/g and 0.88 mg N/g-nitrate and 0.10 mg N/g and 0.11 mg N/g-nitrite are obtained from Purolite A400 and Purolite A400-Cu. Scanning electron microscope measurement shows that the surface of Purolite A400-Cu is rough due to other deposited materials that originate from Cu deposition. Energy dispersive spectroscopy measurement indicates that the increase in adsorption is due to Cu impregnation with the addition of a positive surface charge on the resin by Cu. The adsorption capacities of nitrate and nitrite decrease with increases in sulphate, phosphate and chloride concentrations. Data are obtained from a fixed-bed column using the Thomas equation model. The breakthrough curve shows the Ct/C0 ratio values in Purolite A400 and Purolite A400-Cu. Large Ct/C0 values of 0.55 and 0.52-nitrate and 0.48 and 0.03-nitrite are obtained from Purolite A400 and Purolite A400-Cu.


Keywords:  nitrite adsorption, nitrate adsorption, Purolite A400 resin, wastewater treatment, Cu impregnation



Kepekatan nitrat dan nitrit yang melebihi piawaian kualiti air akan berpotensi membahayakan kesihatan manusia, sindrom biru-bayi dan pertumbuhan tumbuhan akuatik (eutrofikasi). Purolit A400 resin pertukaran anion yang impregnasi Cu (Purolite-Cu) digunakan untuk mengurangkan kandungan nitrat dan nitrit dalam air sisa. Kapasiti ketepuan tertinggi diperolehi pada Purolit dan Purolit-Cu masing-masing 0.76 mg N/g; 0.88 mg N/g-nitrat dan 0.10 mg N/g; 0.11 mg N/g-nitrit. Pengukuran dengan menggunakan spektrometri serakan tenaga (EDS) membuktikan bahawa peningkatan penjerapan adalah disebabkan oleh impregnasi Cu dengan penambahan caj permukaan positif pada resin oleh logam Cu. Kapasiti penjerapan nitrat dan nitrit menurun apabila kepekatan sulfat, fosfat dan klorida bertambah. Data diperolehi daripada turus lapisan penjerap tetap menggunakan model persamaan Thomas. Lengkung bulus menunjukkan nilai nisbah Ct/C0 dalam Purolit dan Purolit-Cu. Nilai Ct/C0 terbesar diperoleh pada Purolit dan Purolit-Cu masing-masing 0.55 & 0.52-nitrat dan 0.48 & 0.03-nitrit.


Kata kunci:  penjerapan nitrit, penjerapan nitrat, resin Purolit A400, rawatan air sisa, impregnasi Cu



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