Flocculation and antibacterial performance of dual coagulant system of modified cassava peel starch and alum

Asharuddin, Syazwani Mohd; Othman, Norzila; Zin, Nur Shaylinda Mohd; Tajarudin, Husnul Azan; Din, Mohd Fadhil Md

doi:10.1016/j.jwpe.2019.100888

Cited by 24 publications

(15 citation statements)

References 49 publications

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“…As can be seen, the solid particles form clumps made of crystals of various sizes. The average size of alum clumps is about 40-60 μm, similar to the observations reported by [6]. The distribution of surface elements reflected by EDX spectrometry confirmed the absence of impurities in the alum sample used as the main coagulant in this study.…”

Section: Cassava Peel Coagulantsupporting

confidence: 90%

“…Both starches exhibit polygonal and spherical starch granules with clear ridges that appear to mark sites, where the granules are in close contact with one another [31][32]. In addition, the original CPS starch granules were observed to be finer with no evidence of cracking due to the low level of damage during the starch isolation process [6]. EDX analysis performed on native CPS only identified the presence of prominent C and O peaks, confirming the assumption that pure starch granules consist of carbohydrate monomers (see Figure 5).…”

Section: Cassava Peel Coagulantmentioning

confidence: 99%

“…The development of 'green' water treatment methods is a fairly interesting topic, because it involves biopolymer materials [4]. The use of environmentally friendly biocoagulants or bioflocculants can be an alternative solution [6]. Biopolymer is an interesting concern because it is a natural product that is environmentally friendly with low production costs [7].…”

Section: Introductionmentioning

confidence: 99%

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Literature Review: Fabrication Method, Characterization, Performance, and Application of Cassava Peel as Bio-Coagulant for Wastewater Treatment

Yolanda

2022

J. Kartika Kimia

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The purpose of this study was to conduct a literature review to determine the understanding of current research on the use of Cassava Peel (CP) in the field of wastewater treatment, especially as a coagulant. This study reports on the types of coagulant modification of CP, coagulants characterization of CP for each modification, coagulants performance of CP under various conditions, and various applications of CP coagulant for wastewater treatment. This literature study takes references from 51 articles from the period 2011-2022. We mapped each article used and visualized it using the VOS viewer to find out the relationship between topics and absorption capacity in terms of article titles and keywords. From the results of a literature review study, CP is an attractive option and has the potential to be used as a natural coagulant or adsorbent to remove pollutants (such as dyes and turbidity) in wastewater treatment. The results of this study are expected to provide benefits and ideas for utilizing agricultural waste such as CP to become an economically efficient material.

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Section: Cassava Peel Coagulantsupporting

confidence: 90%

Section: Cassava Peel Coagulantmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Literature Review: Fabrication Method, Characterization, Performance, and Application of Cassava Peel as Bio-Coagulant for Wastewater Treatment

Yolanda

2022

J. Kartika Kimia

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“…Hence, the extent of charge neutralisation and sweep flocculation mechanisms diminishes resulting in lower removal efficiencies of COD, TSS and turbidity (Ghernaout et al 2009). Decrease in low coagulation efficiency of alum at high pH was also reported by Asharuddin et al (2019).…”

Section: Development and Validation Of Response Surface Modelsmentioning

confidence: 76%

Optimization of Coagulation-flocculation Process for Pre-treatment of Artisanal Tannery Wastewater Using Response Surface Methodology

Appiah-Brempong

Essandoh

Asiedu

et al. 2021

Preprint

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There is a dearth in knowledge on artisanal tannery wastewater treatment as most studies are focused on treatment of wastewater generated from modern-day leather manufacturing industries. The extensive use of plant materials in artisanal tanneries introduces high loads of polyphenolic compounds in the wastewater rendering biological treatment of the wastewater ineffective. This study, therefore, employed coagulation-flocculation process to pre-treat artisanal tannery wastewater with the aim of applying the central composite design, a statistical approach in Response Surface Methodology (RSM) to model and optimize the removal of Chemical Oxygen Demand (COD), Total Suspended Solids (TSS) and turbidity and to minimize Sludge Volume Index (SVI). Optimization process focused on the two most important influencing parameters: dosage of aluminium sulphate and initial pH of wastewater. Results revealed that optimal pH and aluminium sulphate dosage of 6.09 and 11.6g/L respectively could yield maximum removal efficiencies of 38.51% of COD, 76.05% of TSS and 79.64% of turbidity from the wastewater with a minimum SVI of 29.57mL/g. Further experiments conducted to validate these results showed a good agreement between the experimental and predicted results signifying the suitability of RSM for optimization of the coagulation treatment process. This is the first reported study on optimization of coagulation-flocculation treatment of artisanal tannery wastewater. Results of this study can be used practically for efficient pre-treatment of artisanal tannery wastewater.

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“…The coagulation-flocculation was studied under the following conditions: i) PAC (40-70 mg.L -1 ); ii) FeCl3 (5-20 mg L -1 of Fe 3+ ) and gelatinized starch (0-15 mg.L -1 ) [30,31].…”

Section: Methodsmentioning

confidence: 99%

On the Use of Iron Chloride and Starch for Clarification in Drinking Water Treatment

Cep¹,

Ha²,

Azevedo³

et al. 2021

Int J Water Wastewater Treat

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In drinking water treatment plants, chemical reagents are employed to aggregate and remove suspended particles. However, not all reagents are eco-friendly and exists concerns over environmental, economic, and health issues. This study shows features of the sustainability of commercial coagulants/flocculants and presents experimental research on floc characterization and settling of dispersed solids with a combination of Ferric Chloride (FeCl3 ) and gelatinized starch. Bench studies were conducted using kaolin suspensions and results were validated with raw water collected from a river (Rio dos Sinos, Brazil). Flocculation indexes, floc structure, and residual turbidities were compared with Polyaluminum Chloride (PAC), as a reference. All techniques showed that the combination of FeCl3 and starch formed well-structured, larger, and more settleable flocs than those produced with PAC. Superficial loadings, in a continuous separation tank (2 to 4 m.h-1) were studied with and without lamellae. Best results were obtained with 15 mg.L-1 Fe3+ and 10 mg.L-1 starch, with a velocity gradient, G, of 60 s-1 in the slow mixing and with 60° inclined lamellae spaced 1.3 cm apart. Best conditions were applied to the clarification of the raw water and again, due to the rapid settling of flocs with FeCl3 and starch, better results were obtained compared to PAC. A turbidity reduction of 94% and a residual value of 2.5 NTU with superficial loadings of 3 m.h-1 were obtained. Results were discussed in terms of interfacial and operating parameters and a promising potential for the combination of FeCl3 with starch for solid/liquid separation was envisaged.

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Flocculation and antibacterial performance of dual coagulant system of modified cassava peel starch and alum

Cited by 24 publications

References 49 publications

Literature Review: Fabrication Method, Characterization, Performance, and Application of Cassava Peel as Bio-Coagulant for Wastewater Treatment

Literature Review: Fabrication Method, Characterization, Performance, and Application of Cassava Peel as Bio-Coagulant for Wastewater Treatment

Optimization of Coagulation-flocculation Process for Pre-treatment of Artisanal Tannery Wastewater Using Response Surface Methodology

On the Use of Iron Chloride and Starch for Clarification in Drinking Water Treatment

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