Use of different coagulants for cassava processing wastewater treatment

Santos, Jordana Dorca dos; Veit, Márcia Teresinha; Juchen, Patrícia Trevisani; Gonçalves, Gilberto da Cunha; Palácio, Soraya Moreno; Fagundes‐Klen, Márcia Regina

doi:10.1016/j.jece.2018.02.039

Cited by 33 publications

(8 citation statements)

References 19 publications

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“…Therefore, phosphate and starch removal from wastewater has become the focus of many studies. The main phosphate and starch removal methods are similar, such as chemical precipitation [71][72][73][74], biological methods [75][76][77][78][79] and adsorption techniques [80][81][82][83]. Among them, Chemical precipitation and adsorption technology is commonly used in wastewater treatment due to the simple operation with low cost and large processing capacity compared to other methods [84][85][86].…”

Section: Removal Of Phosphate and Starch In Wastewatermentioning

confidence: 99%

Magnetic Separation of Impurities from Hydrometallurgy Solutions and Waste Water Using Magnetic Iron Ore Seeding

Han¹,

Sun²,

Sun³

et al. 2021

Iron Ores

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The removal of iron ion from leaching solution is critical for the recovery of value metals, with the method of choice commonly being crystallization (precipitation). This paper summarized the new improvements in iron removal by precipitation methods in recent years and proposed a novel process, magnetic seeding and separation. The new process can promote iron precipitate aggregation and growth on the surface of the magnetic iron ore seeds. A core-shell structure was formed of iron precipitate and magnetic iron ore seeds, which can be magnetized and coalesced in magnetic field, accelerating the solid-liquid separation. The efficient magnetic flocculation and separation offset the poor settleability and filterability of the residues, contributing to the development of the hydrometallurgy process. Moreover, magnetic seeding and separation was also used for the removal of organic and inorganic contaminants from wastewater, significantly improving the purification efficiency. Therefore, iron ore not only played an important role in mining and steel manufacture, but also can be used to solve some problems in crossing fields.

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Section: Removal Of Phosphate and Starch In Wastewatermentioning

confidence: 99%

Magnetic Separation of Impurities from Hydrometallurgy Solutions and Waste Water Using Magnetic Iron Ore Seeding

Han¹,

Sun²,

Sun³

et al. 2021

Iron Ores

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“…The application of wastewater treatment could be a solution for protecting the environment. Adsorption and coagulation are wastewater effective treatment methods with a simple design and lower processing cost used by industry (Cai et al, 2019;dos Santos et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Adsorption and coagulation in wastewater treatment – Review

et al. 2021

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Wastewater issues became a complex challenge in the world. There are several methods in wastewater treatment, such as chemical, physical, biological, and the combination of each method. However, each process has advantages and disadvantages. The physicochemical methods are common methods used in wastewater treatment, such as adsorption and coagulation. Adsorption and coagulation are excellent methods to remove pollutants. The adsorption process is greatly influenced by pH, adsorbent dose, temperature, and contact time. Coagulant dose, settling time, and pH are the main factors in the coagulation process. Chemical material as an adsorbent and coagulant has been studied in previous research, but recently, to substitution chemical materials is a challenging subject. Natural substances are potential new materials in wastewater treatment and became popular due to their efficiency and environment friendly characteristics. This review investigated the role of adsorption and coagulation in wastewater treatment and the utilization of natural materials as adsorbents and coagulants.

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“…Organic coagulants have been successfully used in physical-chemical treatment systems to replace metallic coagulants [28][29][30][31]. As an advantage, organic coagulants generate less sludge volume, generally, this sludge is absent of substances potentially toxic to the environment, and furthermore, these coagulants have high efficiency in removing pollutants at low dosages [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Dairy Wastewater Treatment with Organic Coagulants: A Comparison of Factorial Designs

Muniz

Pereira

Borges

2021

Water

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Optimization of coagulant dosage and pH to reduce the turbidity and chemical oxygen demand (COD) of synthetic dairy wastewater (SDW) was investigated using a full factorial design (FFD) and full factorial design with center point (FFDCP). Two organic coagulants, polyacrylamide (PAM) and Tanfloc were used. The optimal values of coagulant dosage and pH were determined using a multiple response optimization tool and desirability function. The results obtained revealed that the optimum condition for removing turbidity and COD were at pH 5.0 using 50 mg L−1 of coagulant. The same optimum point was obtained in both experimental designs, indicating a good agreement between them. In optimum conditions, the expected removal of turbidity was above 98% with PAM and above 95% with Tanfloc. The estimated COD removal was above 72% with PAM and above 65% with Tanfloc. The addition of center points with replicates in the factorial design allowed to obtain the estimate of the experimental error with a smaller number of runs, allowing to save time and cost of the experimental tests. Moreover, the addition of center points did not affect the estimates of the factorial effects and it was possible to verify the effect of curvature, allowing obtaining information about the factors at intermediate levels.

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Use of different coagulants for cassava processing wastewater treatment

Cited by 33 publications

References 19 publications

Magnetic Separation of Impurities from Hydrometallurgy Solutions and Waste Water Using Magnetic Iron Ore Seeding

Magnetic Separation of Impurities from Hydrometallurgy Solutions and Waste Water Using Magnetic Iron Ore Seeding

Adsorption and coagulation in wastewater treatment – Review

Dairy Wastewater Treatment with Organic Coagulants: A Comparison of Factorial Designs

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