A facile-treated sago bark (Metroxylon sagu) as a biosorbent for Cd(II) ions removal in aqueous solution by using the batch method.

The performance of sago bark for Cd(II) ions removal in the aqueous solution has been investigated using the batch method. The sago bark was facile-treated using HNO3 0.01 M and its ability on Cd(II) removal was evaluated under specific parameters such as pH, contact time, agitation speed, temperature, initial concentration, and adsorbent mass. The adsorption capacity of sago bark was found to be 2.473 mg/g. The Langmuir isotherm model corresponding to the monolayer adsorption process described the adsorption data well. The kinetic and thermodynamic evaluation confirmed that the Cd(II) ion sorption followed a pseudo-second-order model and endothermic. The adsorption capacity decreased after three times adsorption-desorption cycles. This result showed that the treated sago bark could be a good candidate as an adsorbent for Cd(II) removal.

Effect of Phaleria Macrocarpa Flesh Fruits Extract on MDA Level, SGOT and SGPT Activity in Serum of Experimental Rats Contaminated by Cd (II) Ion.

BACKGROUND: Cd (II) ion is a heavy metal that has a toxic ability in the human body. P. macrocarpa has been used as anticancer, Diabetes Mellitus and antimicrobe because it consists of flavonoid, steroid, and tannin. AIM: The purpose of this study was to investigate the effectiveness of P. macrocarpa fruits extract as an antidote for the toxicity of Cd (II) in the liver of experimental rats. METHODS: The experimental laboratory was done by using 9 female of Wistar rats (Rattus novergicus) that divided into 3 groups with the age between 2.5-3 months and weight between 133-160 grams. The first group was a control given distilled water and a normal diet. The second group was given antidote 5 mL of P. macrocarpa fruit extract x BW/200 g dosage for 7 days and induced by 1000 mg/L of Cd (II) ion with dosage of 1 mL x BW/200 g. The third group was given 1000 mg/L Cd (II) ion only of 1 mL x BW/200 g. After 5 hours, the blood sample was taken for analysis of MDA, SGOT, and SGPT. RESULTS: As the result of experimental rats exposed with Cd (II) ion, there are significant decreasing of all the observed parameters including MAD, SGOT and SGPT with percentage 71.5%, 72.1%, and 93.6% respectively. CONCLUSION: The rats given with the antidote of Phaleria macrocarpa flesh fruit were able to protect the liver from damage due to exposure to Cd (II) as seen from the decrease in liver function enzyme parameters namely SGOT and SGPT.