Abstract
This study investigates the chemical and morphological characteristics of cassava peel (CP) biomass as a potential coagulant aid for turbidity, heavy metals and microbial removal. FE-SEM micrograph shown the surface of the CP samples was covered with smooth and globular in shaped of bound starch granules. FTIR spectra demonstrated that carboxyl and hydroxyl groups were present in abundance. Whereas analysis by XRF spectrometry indicated the CP samples contain Fe 2 O 3 and Al 2 O 3 which might contribute to its coagulation ability. The features of CP obtained from this study promotes the feasibility of CP to be further developed and studied to produce effective coagulant aid as sustainable alternative to reduce the usage of chemical coagulants.
Highlights
The production of potable water from most raw water sources usually involves the process called coagulation and flocculation
CP1 sample consist of the whole cassava peel (CP) waste composed of the periderm, cortex and flesh layer which might be the reason of numerous appearance of starch granules on its surface
The characterization of CP samples which were accomplished through the analysis of FESEM, Fourier Transform Infrared (FTIR) and X-Ray Fluoresence (XRF) show the potential of CP1 sample which composed of the whole cassava peel waste comprises of the periderm, cortex and flesh to be developed as coagulant aid
Summary
The production of potable water from most raw water sources usually involves the process called coagulation and flocculation. This process plays a major role in surface water treatment by reducing turbidity, algae, colour, organic compound, clay particles as well as removing microbial content in the water which results in minimizing the risk of waterborne diseases [1]. Ferric salts and synthetic polymers are the most common coagulant used in water treatment worldwide. These coagulants are often expensive and many developing countries can hardly afford the costs of imported chemicals for water and waste water treatment. Some synthetic organic polymers such as acrylamide are regarded to neurotoxicity and strong carcinogenic effect [1]
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