Treatment of Textile Wastewater by Coagulation–Flocculation Process Using <i>Gossypium herbaceum</i> and Polyaniline Coagulants

Arulmathi, P; Jeyaprabha, C.; Sivasankar, Periandavan; Rajkumar, Vadivel

doi:10.1002/clen.201800464

Cited by 33 publications

(25 citation statements)

References 37 publications

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“…Thus, 40 minutes was chosen for assuring maximum effect of coagulation process in further experiments. The results of the study are similar with studies of Zawawi et al and Arulmathi et al, which showed that turbidity removal was effective within 30-35 minutes[21,22].…”

supporting

confidence: 90%

Removal of Pollutants From Disperse Black Dye Wastewater by Mucilage From Dragon Fruit Peel

Le¹

2020

JST

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Apart from the large revenue, the textile industry in general and the dyeing process in particular are releasing huge amounts of wastewater that pollutes the environment and adversely affects human health. Treatment of this type of wastewater by coagulation and flocculation process requires lots of synthetic chemicals, implying a chemical hazard. Thus, this study evaluated the efficacy of mucilage extracted from the peel of dragon fruit (Hylocereus undatus) towards partly substitution of Poly Aluminium Chloride (PAC) used in coagulation and flocculation process for removal of turbidity and other pollutants from disperse black dye wastewater. The effects of pH, settling time, coagulant dosage and mucilage dosage on removal of turbidity, chemical oxygen demand (COD) and color, etc. were analyzed based on Jar-tests. The results showed that the addition of mucilage at 10 mg/L after PAC at 245 mg/L under optimal pH 7 and settling time 40 minutes removed turbidity up to 94.92%. The amount of PAC used was 3-10% less compared to total PAC needed for obtaining equal efficiency when used alone. The pollutant removal by mucilage was also comparable to Polyacrylamide (PAM) – a synthetically organic flocculants.

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supporting

confidence: 90%

Removal of Pollutants From Disperse Black Dye Wastewater by Mucilage From Dragon Fruit Peel

Le¹

2020

JST

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“…Moringa seeds powder (MOP-01) was largely used in previous research studies (Okuda et al 1999;Arulmathi et al 2019;Bouchareb et al 2020) for different wastewater treatment. In this study, 170 mg/L of MOP-01 removed up to 88.98% of the initial municipal wastewater turbidity as illustrated in Figure 5(b).…”

Section: Alum and Mop-01 Coagulants Dose Effectmentioning

confidence: 99%

“…In recent years, several studies were conducted on different plant materials that can be used as sources of natural coagulants (Abidin et al 2013;Bouchareb et al 2020). For instance, natural coagulants from acorn (Benalia et al 2018), starch (Esparza-Soto et al 2019), cactus (García-Morales et al 2018, okra (Balaji et al 2018), Gossypium herbaceum (Arulmathi et al 2019), and Moringa Oleifera (Arulmathi et al 2019;Bouchareb et al 2020) have been investigated. The plant that has received the greatest interest is Moringa Oleifera seeds (Abidin et al 2013;Bouchareb et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Optimization of active coagulant agent extraction method from Moringa Oleifera seeds for municipal wastewater treatment

Bouchareb

Derbal

Benalia

2021

Water Science and Technology

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An enhanced and different method for the active coagulant agent extraction from Moringa Oleifera seeds powder (MOSP) was established and compared to the conventional extraction method in distillate water. In the improved method, MOSP were extracted using sodium chloride as solvent at different concentrations to extract more coagulant agent from Moringa Oleifera and enhance coagulation activity. In this study, MOSP were initially processed and oil content was removed to minimize coagulant concentration usage (MOSP-EO). Moringa Oleifera seeds powder was characterized by both X-ray and FTIR analysis. Ultrasound treatment as well was considered as an additional treatment for MOSP-EO to investigate its effect on coagulant agent extraction process improvement. Coagulation/flocculation experiments were conducted to assess coagulant extraction performance realized through various conditions. The effect of coagulant dosage, solvent concentration and ultrasound exposition duration were investigated for a real effluent of municipal wastewater treatment. Among the three studied NaCl concentrations, 1.0 M was found to be the best solvent concentration for high turbidity removal of more than 97% using 140 mg/L of MOSP-EO compared to extraction in distillate water 88% using 170 mg/L of the same coagulant. NaCl 1.0 M demonstrated the best performance in biochemical oxygen demand (BOD5) removal as well, where more than 98% of municipal wastewater initial BOD5 was eliminated. Mixing MOSP-EO assisted with ultrasound waves at different treatment periods did decrease the active coagulant agent extraction and thus showed its inconvenient for Moringa Oleifera coagulation activity usage.

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“…The total surface area of the dispersed colloids is large due to their small size [ 46 ]. The surface charge of colloids in the solution causes virtual stability in dispersions and destabilization when their sedimentation is slow [ 47 , 48 , 49 ]. The surface becomes charged through ionization of the functional groups (i.e., alcohol, carboxylic acid, and amine), ion adsorption, dissolution of ionic solids, and isomorphous substitution [ 48 , 49 ].…”

Section: Resultsmentioning

confidence: 99%

“…The surface charge of colloids in the solution causes virtual stability in dispersions and destabilization when their sedimentation is slow [ 47 , 48 , 49 ]. The surface becomes charged through ionization of the functional groups (i.e., alcohol, carboxylic acid, and amine), ion adsorption, dissolution of ionic solids, and isomorphous substitution [ 48 , 49 ]. According to Duan and Gregory [ 23 ], colloidal stability and destabilization can be brought about by an increase in ionic strength with some reduction in the zeta potential, and a reduced thickness of the diffuse part of the electrical double layer.…”

Section: Resultsmentioning

confidence: 99%

Coagulation Treatment of Wastewater: Kinetics and Natural Coagulant Evaluation

2021

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In this study, three coagulants (ferromagnetite (F), alum (A), and eggshells (E)) and their hybrids (FA, FE, and FEA) were investigated as possible cost-effective coagulants for the treatment of industrial wastewater. Scanning electron microscopy (SEM) coupled with energy-dispersive X-ray (EDX) was used to characterize the morphological and elemental compositions of the coagulants. The effects of coagulant dosage (10–60 mg/L) and settling time were investigated for the removal of turbidity, color, and total suspended solids. A jar tester (JTL6) operating at conditions of 150 rpm for 2 min (rapid mixing) and 30 rpm for 15 min (slow mixing) was employed. Results from the characterized supernatant showed about 80% removal of the contaminants. The prospects of F were proven to be the most effective as compared to the binary (FA > FE) and the ternary hybridized (FEA) coagulants. At an optimum dosage and settling time of 20 mg/L and 30 min, respectively, the treatability performance of F was clearly proven to be viable for wastewater treatment.

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Treatment of Textile Wastewater by Coagulation–Flocculation Process Using Gossypium herbaceum and Polyaniline Coagulants

Cited by 33 publications

References 37 publications

Removal of Pollutants From Disperse Black Dye Wastewater by Mucilage From Dragon Fruit Peel

Removal of Pollutants From Disperse Black Dye Wastewater by Mucilage From Dragon Fruit Peel

Optimization of active coagulant agent extraction method from Moringa Oleifera seeds for municipal wastewater treatment

Coagulation Treatment of Wastewater: Kinetics and Natural Coagulant Evaluation

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