Investigation on effectiveness of natural (cactus powder) and synthetic (grafted potato starch) materials as adsorbents for hardwater treatment

Mgombezi, Desderia Cyprian

dc.creator	Mgombezi, Desderia Cyprian
dc.date	2019-01-08T08:40:01Z
dc.date	2019-01-08T08:40:01Z
dc.date	2017
dc.date.accessioned	2022-10-20T13:14:35Z
dc.date.available	2022-10-20T13:14:35Z
dc.identifier	Mgombezi, D. C. (2017). Investigation on effectiveness of natural (cactus powder) and synthetic (grafted potato starch) materials as adsorbents for hardwater treatment. Dodoma: The University of Dodoma
dc.identifier	http://hdl.handle.net/20.500.12661/516
dc.identifier.uri	http://hdl.handle.net/20.500.12661/516
dc.description	Dissertation (MSc. Chemistry)
dc.description	This study was conducted to investigate the effectiveness of natural and synthetic materials as adsorbents for hard water treatment by using EDTA titrimetric method. Natural adsorbent prepared from cactus and synthetic adsorbent prepared by grafting potato starch and the study conducted on water samples collected from Nzuguni, Ng’ohong’hona, Kisasa and Swaswa in Dodoma municipality. The results revealed that the concentration of hardness decreased as the dose of (Cactus Materials Adsorbents) CMA and (Grafted Materials Adsorbents) GMA increased. The initial hardness before treatment was 547mg/L. with 0.5 g of CMA and GMA the hardness reduced to 268.7mg/L and 246.5mg/L respectively. The effective dose for CMA was 3.5 g with reduced hardness of 105.5 mg/L and for GMA was 2.5g with hardness of 189.1mg/L. The maximum efficiency of hardness removal for CMA was 80.7% and for GMA was 68.4%.The data generated showed that the adsorption process fitted Langmuir type II &IV isothermal model for CMA and GMA respectively with its coefficient of correlation value was R2 =0.99504 and R2 =0.99936 for the CMA and GMA respectively, The data fitted for pseudo second-order kinetic model with coefficient correlation value of ≥ 0.9 compare with a pseudo first-order kinetic model with coefficient correlation value of ≤ 0.7.Also the regeneration shows that the adsorbents materials have ability to adsorb again hardness . From this study CMA have shown higher efficiency in hardness removal compared to GMA, hence CMA is highly recommended for the hardness removal purposes.
dc.language	en
dc.publisher	The University of Dodoma
dc.subject	Cactus powder
dc.subject	Grafted potato starch
dc.subject	Hard water treatment
dc.subject	Water treatment
dc.subject	Tanzania
dc.subject	Hard water
dc.subject	Cactus materials adsorbents
dc.subject	Grafted materials adsorbents
dc.subject	Hardness removal
dc.subject	EDTA titrimetric method
dc.subject	Magnesium and calcium ions
dc.subject	Adsorbents
dc.subject	Cactus
dc.subject	Hardwater treatment
dc.title	Investigation on effectiveness of natural (cactus powder) and synthetic (grafted potato starch) materials as adsorbents for hardwater treatment
dc.type	Dissertation