Combined chemical coagulation–flocculation/ultraviolet photolysis treatment for anionic surfactants in laundry wastewater

Terechova, E.L.; Zhang, Guoquan; Chen, Jie; Соснина, Н. А.; Yang, Fenglin

doi:10.1016/j.jece.2014.09.011

Cited by 57 publications

(21 citation statements)

References 26 publications

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“…RSM has been used to optimize degradation of various contaminants in ultrasonic treatment processes . Terechova et al applied RSM for optimization of coagulant dosage in a combined chemical coagulation‐flocculation/ultraviolet photolysis treatment for linear alkylbenzene sulfonates (LAS) degradation. But this manuscript investigates to optimize LABSA degradation with sonication process using RSM for the first time.…”

Section: Resultsmentioning

confidence: 99%

“…Dehghani et al obtained the maximum degradation of LAS as 83.3% using sonochemical reactor for initial LAS concentration of 0.2 mg L −1 and reaction time of 120 min. Terechova et al reported the maximum LAS degradation efficiencies were 71.26 and 74.58% for the synthetic LAS wastewater and the actual laundry wastewater, respectively. In this study 75% of LABSA degradation has been achieved by sonication process.…”

Section: Resultsmentioning

confidence: 99%

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Optimization of Ultrasonication Process for the Degradation of Linear Alkyl Benzene Sulfonic Acid by Response Surface Methodology

Arslan

Topkaya

Veli

et al. 2018

CLEAN Soil Air Water

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The optimization of ultrasonication process applied to linear alkyl benzene sulfonic acid (LABSA) degradation is investigated with response surface methodology in this study. Methylene blue active substance assay is used as a mean to monitor the degradation of LABSA. The effects of independent process variables (initial LABSA concentration, pH, and reaction time) on main material degradation are investigated. Among the independent variables, the greatest effect on LABSA degradation is observed for reaction time. Besides this, the effects of both reaction time and initial LABSA concentration are quite similar. The initial pH value of the solution has a lower effect on degradation performance when compared to other parameters. The predicted maximum detergent degradation was 75% at the optimal conditions of pH 7.8, initial LABSA concentration of 20 mg L−1, and reaction time of 70 min. Specific cost of LABSA degradation by ultrasonic treatment varies from 0.579 to 4.657 Euro g−1 removal LABSA. According to the results of sonication treatment applied to real wastewater, approximately 40% of the LABSA degradation is achieved at three pH values (5.27, 7.50, and 9.59). Because the original pH of the real wastewater is 9.59, it is more feasible to run experiments at this pH value.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Optimization of Ultrasonication Process for the Degradation of Linear Alkyl Benzene Sulfonic Acid by Response Surface Methodology

Arslan

Topkaya

Veli

et al. 2018

CLEAN Soil Air Water

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“…Proses koagulasi-flokulasi merupakan metode yang terbukti efektif dalam menghilangkan material organik dengan biaya operasional yang relatif rendah. Proses koagulasi tersebut dapat menggunakan koagulan alami maupun anorganik yang tersedia dipasaran (Terechova et al, 2014). Penggunaan koagulan anorganik berbasis aluminium dan besi seringkali digunakan menurunkan kadar COD dan padatan tersuspensi yang terkandung di dalam air limbah laundry.…”

Section: Pendahuluanunclassified

Penggunaan Ferri Klorida dan Kitosan Cangkang Kepiting sebagai Alternatif Koagulan pada Pengolahan Air Limbah Laundry

Setiawan¹,

Yunus²,

Ramadani³

et al. 2020

j.res.technol.ind.

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ABSTRAKPembuangan air Limbah laundry secara langsung di aliran sungai menjadi penyebab tingginya pencemaran sungai. Air limbah laundry mengakibatkan peningkatan perameter COD, BOD5, serta MBAS sehingga berdampak negatif pada kehidupan ekosistem. Proses koagulasi menggunakan bahan kimia FeCl3 dapat menurunkan parameter COD, BOD5 dan MBAS dalam air limbah namun menimbulkan efek negatif pada kesehatan. Kitosan dari cangkang crustacea dapat digunakan sebagai alternatif koagulan yang ramah lingkungan. Kombinasi koagulan kitosan dan FeCl3 diharapkan mampu menurunkan parameter COD, BOD5 dan MBAS air limbah laundry serta dapat mengurangi dosis penggunaan koagulan kimia.Penelitian ini bertujuan mensintesa biokoagulan kitosan dari cangkang kepiting serta menguji efektivitas kitosan cangkang kepiting, ferri klorida, dan kombinasi kedua koagulan dalam pengolahan air limbah laundry. Proses deasetilasi cangkang kepiting menjadi kitosan menggunakan larutan NaOH 60% pada suhu 125 o C selama 6 jam. Koagulasi dilakukan terhadap air limbah menggunakan tiga jenis koagulan yaitu ferrri klorida, kitosan, dan ferri klorida-kitosan. Hasil penelitian menunjukkan bahwa dosis optimum penggunaan koagulan kombinasi terjadi pada dosis 40 mg/L kitosan dan 100 mgl/L ferri klorida dengan menghasilkan efisiensi penyisihan COD, BOD5, dan MBAS masing-masing sebesar 71,67%, 81,14%, dan 66,24%. Penggunaan kombinasi koagulan pada dosis optimum dapat menghemat pemakaian ferri klorida sebesar 84%. ABSTRACTDisposal Laundry wastewater directly in the river were the cause of high river pollution. Laundry wastewater were resulted in an increase the parameters of COD, BOD5, and MBAS, which has a negative impact on river ecosystem. The coagulation process used the chemical FeCl3 can reduce the parameters of COD, BOD5 and MBAS in wastewater but cause negative effects on health. Chitosan from crustacean shells can be used as an alternative to environmentally friendly coagulants. The combination of chitosan coagulant and FeCl3 is expected to reduce the parameters of COD, BOD5, and MBAS laundry wastewater and can reduce the dose of the use of chemical coagulants. This research aims to synthesize chitosan bio-coagulants from crab shell and to test the effectiveness of chitosan crab shell, ferric chloride, and the combination of both coagulants in laundry wastewater treatment. The process of deasetilation of crab shells into chitosan using 60% NaOH solution at 125 o C for 6 hours. Coagulation was carried out on wastewater using three types of coagulants, namely ferric chloride, chitosan and ferric chloride-chitosan. The results showed that the optimum dose of the use of a combination of coagulants occurred at a dose of 40 mg/L chitosan and 100 mgl/L ferric chloride with removal efficiency of COD, BOD5 and MBAS were 273 JRTI Vol.13 No.2 Desember 2019 71.67%, 81.14%, and 66,24% respectively.Coagulant combination at the optimum dosage can save the used of ferric chloride by 84%.

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“…Bautista-Toleda et al [11] analyzed the bioadsorption/biodegradation kinetics of the sodium dodecylbenzenesulfonate surfactant on commercial activated carbons and on activated carbons prepared in the laboratory by activation of almond shells. Terechov's team removed anionic surface-active agent in combined chemical coagulation-flocculation/UV photolysis [12], while Mohan proposed a treatment system that consisted of coagulation-flocculation, sand filtration (SF), and granular activated carbon adsorption [13].…”

Section: Introductionmentioning

confidence: 99%

The application of composite GO/PAN membranes for removing surfactants from laundry wastewater

Fryczkowska¹,

Przywara²

2019

Desalination and Water Treatment

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The paper presents the results of research on the use of ultrafiltration composite graphene oxide/ polyacrylonitrile (GO/PAN) membranes (containing 0.8% (membrane A), 4.0% (membrane B), and 7.7% (membrane C) w/w of GO in PAN matrix) for removing surfactants from synthetic sewage and real laundry wastewater (LWW). For the preparation of synthetic sewage, anionic surfactants (dodecylbenzenesulfonic acid (DBSA), white sodium soap (SS)) and nonionic surfactants (Triton X-100, Mulan Citro) were selected. Real wastewater came from two different laundries, which used a mixture of nonionic and anionic surfactants (LWW 1) and only nonionic surfactants (LWW 2) in the washing process. The research demonstrated that anionic surfactants positively influenced the functionality of the membranes, increasing the volumetric permeate flux, which for DBSA was ~418 L m-2 h-1 (membrane A), ~212 L m-2 h-1 (membrane B), and ~245 L m-2 h-1 (membrane C) and had slightly lower values for SS. The GO/PAN composite membranes are characterized by a rejection rate of 100% for SS and more than 90% for DBSA and therefore can be used to remove anionic surfactants of LWW 1 (R = 90%-99%).

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Combined chemical coagulation–flocculation/ultraviolet photolysis treatment for anionic surfactants in laundry wastewater

Cited by 57 publications

References 26 publications

Optimization of Ultrasonication Process for the Degradation of Linear Alkyl Benzene Sulfonic Acid by Response Surface Methodology

Optimization of Ultrasonication Process for the Degradation of Linear Alkyl Benzene Sulfonic Acid by Response Surface Methodology

Penggunaan Ferri Klorida dan Kitosan Cangkang Kepiting sebagai Alternatif Koagulan pada Pengolahan Air Limbah Laundry

The application of composite GO/PAN membranes for removing surfactants from laundry wastewater

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