Composite wastewater treatment by aerated electrocoagulation and modified peroxi-coagulation processes

Kumar, Abhijeet; Nidheesh, P.V.; Kumar, M Suresh

doi:10.1016/j.chemosphere.2018.04.141

Cited by 112 publications

(36 citation statements)

References 39 publications

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“…There are many well-known processes regarding the treatments of contaminated wastewaters like membrane filtration, 1-4 chemical precipitation, [5][6][7] electrocoagulation, [8][9][10][11][12] reverse osmosis, [13][14][15] adsorbtion, [16][17][18][19][20][21][22][23][24] ion exchange, [25][26][27] etc., all of them with their inherent advantages and disadvantages. At the same time, most of them are not suitable for developing countries due to huge cost investment in terms of use of chemicals, infrastructure, and operation.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Anghel¹,

Niculaua

Spiridon³

2019

Polymers for Advanced Techs

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Adsorption of heavy metals (Pb, Zn, and Cu) on a new bioadsorbent based on starch reinforced with modified cellulose with toluene‐diisocyanate has been studied using batch‐adsorption technology. The study was carried out in order to find if this bio material, designed for seedling pots manufacture, is able to act like a barrier between soil pollutants and plants. The influence of contact time, pH, adsorbent dose, and salt concentrations was also evaluated. The obtained data were examined using the Langmuir and Freundlich adsorption models. Optimal results were obtained at pH 5.0, temperature of 25°C, contact time of 120 minutes, and an adsorbent dose of 4 mg/mL. Experimental data along with computed Langmuir parameters show that the adsorption process is favorable, and the maximum adsorption capacity of the adsorbent for lead, zinc, and copper was 66.66, 58.82, and 47.61 mg/g, respectively.

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Section: Introductionmentioning

confidence: 99%

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Anghel¹,

Niculaua

Spiridon³

2019

Polymers for Advanced Techs

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“…Kimyasal içeriğe sahip atıksuların arıtılmasında koagülasyon [1,2], oksidasyon [3], elektrokoagülasyon [4] gibi prosesler kullanılmaktadır. Koagülasyon prosesi özellikle kolloidal kirliliğin fazla olduğu atıksularda etkin bir şekilde giderim sağlamaktadır.…”

Section: Abstract: Electrocoagulation Chemical Spraying Wastewater unclassified

Kimyasal Spreyleme Atıksuyunun Arıtımında Elektrokoagülasyon Prosesinin Optimizasyonu: Box-Behnken Dizaynı

Solak

2019

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada, kot pantolon üretiminde kimyasal spreyleme işleminden oluşan atıksuyun, Alüminyum (Al) elektrot kullanılarak Elektrokoagülasyon (EK) Prosesi ile arıtımı incelenmiştir. EK prosesi ile KOİ (Kimyasal Oksijen İhtiyacı) ve TÇK (Toplam Çözünmüş Katı) parametrelerinin giderimi için pH, akım yoğunluğu (A.Y.) ve elektroliz süresi (E.S.) gibi EK proses verimliliğinde önemli rol oynayan parametrelerin etkileri belirlenmiştir. Deneysel tasarımda Box-Behnken istatistiksel modeli kullanılmıştır. İstatistiksel analizler her iki kirletici için de sonuçların quadratik modele uygun olduğunu göstermiştir. EK reaktöründe KOİ ve TÇK'nın giderilmesi için regrasyon (R 2) değerinin sırasıyla 0,95 ve 0,99; R 2 adj değerinin sırasıyla 0,88 ve 0,99 olduğu bulunmuştur. R 2 ve R 2 adj değerlerinin 1'e yakın olması, deney sonuçlarının ve istatistiksel çıkarımların uyumlu olduğunu ve işlem parametrelerinin etkilerinin belirlenmesinde Box-Behnken istatistiksel tasarımının etkili olduğunu göstermektedir. KOİ ve TÇK giderimi için optimum pH değerleri sırasıyla 5,01 ve 6,66 olarak tespit edilirken, her iki kirletici için optimum akım yoğunluğu 59 A / m 2 ve elektroliz süresi 29 dk. olarak belirlenmiştir.

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“…Several methods have been demonstrated for the treatment of polluted water by different scientists. These methods may include coagulation [1][2], flocculation [3][4], adsorption [5][6], chemical oxidation [7][8] and photocatalytic processes [9][10]. Amongst all these treatment methods, separation of targeted species from wastewater through Emulsion Liquid Membranes (ELM) is also a promising technique.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of Rupture Analysis for the Optimization of Stable Emulsion Liquid Membrane using DOE Approach

Jamshaid

Bhatti

Qureshi

et al. 2020

Mehran Univ. res. j. eng. technol.

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Rupture of the membrane is considered as one of the most critical characteristics while working on wastewater treatment via emulsion liquid membrane. This paper presents a decisive study of different parameters affecting the rupture of membrane. The potential parameters which are investigated in this study include, surfactant dosage, surfactant concentration, concentration of aqueous phase, emulsification velocity, ratio of organic to aqueous phases and ratio of membrane to feed phases. The Design of Experiment (DOE) approach was used to design the experiments and the results were analyzed statistically through a software Minitab-18. The study revealed that amongst all these parameters, two are the highly significant playing a crucial role in rupture of the membrane. These significant parameters are emulsification velocity and ratio of the organic to aqueous phase. Pareto chart being used as an effective statistical tool implied that the emulsification velocity and ratio of the organic to aqueous phase have negative and positive effects on the response respectively. Using the Response Optimizer tool, the optimum levels of all the potential parameters were statistically calculated followed by an experimental verification resulting a least minimum rupture of 36%. A statistical model was developed in this study and the values of predicted rupture were compared with the experimental results. The calculated correlation coefficient R2 of the developed model was 0.998 and the accuracy of correlation coefficient deduced that the developed model of rupture will precisely calculate the rupture over the range of values.

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Composite wastewater treatment by aerated electrocoagulation and modified peroxi-coagulation processes

Cited by 112 publications

References 39 publications

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Heavy metal adsorption ability of a new composite material based on starch strengthened with chemically modified cellulose

Kimyasal Spreyleme Atıksuyunun Arıtımında Elektrokoagülasyon Prosesinin Optimizasyonu: Box-Behnken Dizaynı

Parametric Study of Rupture Analysis for the Optimization of Stable Emulsion Liquid Membrane using DOE Approach

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