Optimization of turbidity removal by coagulation and flocculation process from synthetic stone cutting wastewater

Usefi, Saideh; Asadi-Ghalhari, Mahdi

doi:10.1007/s42108-019-00010-2

Cited by 6 publications

(4 citation statements)

References 28 publications

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“…It also reduces significantly the aesthetic quality of water, having very harmful impact on the water bodies when not disposed properly. Industrial effects of turbidity are not left out of concerns, as it contributes to clog tanks and pipes corrosion, eventually damaging them [8]. Also, turbidity in effluents and their complex characteristics pose severe resistance to unit operations which undergoes in industrial wastewater treatment plants [4,7]; hence, the importance of turbidity removal in wastewater treatment before discharge cannot be over emphasized.…”

Section: Supplementary Informationmentioning

confidence: 99%

“…There are different treatment processes applied to enhance the removal of contaminants from wastewater [9]. These processes includes coagulation and flocculation [10,11], adsorption [8], and reverse oxidation [12] which was applied in recent times to remove bacterial from wastewater [8,13,14]. These are the most commonly sought-out treatment processes for the removal of turbidity from wastewater that contains significant amount of settle-able and suspended solids.…”

Section: Supplementary Informationmentioning

confidence: 99%

“…The CCD is an experimental design used for building a quadratic model for responses without the need to use a complete three-level factorial experimental design and provides information about interactions among experimental variables within the range studied, leading to better knowledge of the process. The CCD design was randomized but not replicated at each experimental condition [8]. The relationship between the coded values and the actual values is obtained by Eqs.…”

Section: Experimental Designsmentioning

confidence: 99%

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Optimization studies on turbidity removal from cosmetics wastewater using aluminum sulfate and blends of fishbone

Ovuoraye

Ugonabo

Nwokocha³

2021

SN Appl. Sci.

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This research is centered on the optimization of coagulation–flocculation treatment of cosmetic wastewater. It analyzes blends of fishbone (BFB) and aluminum-based coagulant (ABC) to determine the efficacy of BFB as a potential coagulant–flocculants aid at optimum conditions using response surface methodology (RSM). The experiment was carried out employing the standard nephelometric procedure at 1000 rpm stirring rate. The central composite design (CCD) was used to examine the interactions of pH, dosage, and settling time to maximize the turbidity removal efficiency of the ABC- and BFB-driven coag–flocculation. The optimal pH, dosage, and settling time for ABC were obtained as 10, 0.1 g/L, and 2 min, while pH 6, 0.4 g/L, and settling time of 4 min were recorded for BFB following the established quadratic model of the RSM. The removal efficiency of ABC and BFB plots 80% and 88%, respectively; this corresponds to 262 NTU and 288 NTU of removal from the wastewater at optimal conditions. The kinetics result indicated that the rate constant (Kf) 3 × 10−3 (L/g min) of BFB surpassed 5 × 10−5 (L/g min) recorded for ABC following second-order coag–flocculation reaction, with correlation coefficients (R2) values of 0.999 and 0.9985, respectively. The research also applied cost–benefit analysis for the determination of the efficacy of BFB. The figure obtained shows that the benefit of using BFB will save $5.50 compared to ABC based on this work. At optimal conditions, BFB satisfied the environmental protection agency pH standard for industrial wastewater discharge, promising coagulant–flocculants aid for industrial wastewater purification purpose and the preservation of the environment.

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Section: Supplementary Informationmentioning

confidence: 99%

Section: Supplementary Informationmentioning

confidence: 99%

Section: Experimental Designsmentioning

confidence: 99%

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Optimization studies on turbidity removal from cosmetics wastewater using aluminum sulfate and blends of fishbone

Ovuoraye

Ugonabo

Nwokocha³

2021

SN Appl. Sci.

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“…CCD is frequently used to optimize the usage of coagulants as a wastewater treatment application [27,[29][30][31]. Several studies regarding the optimization of RSM-CCD in the coagulation process were carried out by Usefi and Asadi-Ghalhari [32] which show that the RSM-CCD model can describe the main behavior of the turbidity removal process in stone cutting industry waste using PAC and alum coagulants. In addition, research conducted by Asadi-Ghalhari et al [33] showed that the RSM-CCD model can be used in the process of removing turbidity in wastewater with a removal percentage of 96.6%.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of FeSO4.7H2O as a Coagulant on Chromium Hexavalent Removal Using Coagulation-Flocculation Process: Optimization Using Response Surface Methodology

Pangeran,

Afandy,

Sawali

2023

J. Tek. Kim. Ling

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Response Surface Methodology-Central Composite Design (RSM-CCD) is widely employed in the process of optimizing the applications of coagulants for wastewater treatment. The experiment aims to evaluate the effect of the FeSO4.7H2O concentration and settling time on removing the chromium hexavalent (Cr (VI)) from wastewater by coagulation-flocculation using RSM-CCD. This experiment was carried out based on the results of the model and optimization using the RSM-CCD to obtain the removal efficiency of Cr (VI) as well as determine the influence of the concentration of FeSO4.7H2O (X1) and settling time (X2). The RSM-CCD experimental design uses a two-factor and two-level design with 13 experimental runs and 5 center points. Inter-variable regression coefficients are also produced with the elimination of Cr (VI). The ANOVA test results showed a fairly significant figure for the assembled model. The model validation results show that the proposed model is compatible with the experimental results. RSM optimization shows optimum conditions based on experimental FeSO4.7H2O coagulant concentration variables and coagulation time at 150 mg/L coagulant concentration and 60 minutes of time, and the prediction results based on RSM-CCD optimization using Design Expert show the most optimum condition at 165,562 mg/L coagulant concentrations and 60,527 minutes of time.

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Optimization, modeling, and characterization of water treatment sludge modified by ultrasound-assisted acid activation for enhancing of turbidity removal

Nayeri

Mousavi

2020

Environ Dev Sustain

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Optimization of turbidity removal by coagulation and flocculation process from synthetic stone cutting wastewater

Cited by 6 publications

References 28 publications

Optimization studies on turbidity removal from cosmetics wastewater using aluminum sulfate and blends of fishbone

Optimization studies on turbidity removal from cosmetics wastewater using aluminum sulfate and blends of fishbone

Efficiency of FeSO4.7H2O as a Coagulant on Chromium Hexavalent Removal Using Coagulation-Flocculation Process: Optimization Using Response Surface Methodology

Optimization, modeling, and characterization of water treatment sludge modified by ultrasound-assisted acid activation for enhancing of turbidity removal

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