Heavy metal ions removal from metal plating wastewater using electrocoagulation: Kinetic study and process performance

Al-Shannag, Mohammad; Al-Qodah, Zakaria; Bani‐Melhem, Khalid; Qtaishat, M.; Alkasrawi, Malek

doi:10.1016/j.cej.2014.09.035

Cited by 462 publications

(144 citation statements)

References 29 publications

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“…However, in our study an inverse effect was observed, where an increase in 1 cm ED of 2 and 3 cm favored the removal of color, turbidity and TOC. This difference is due to the electrical conductivity of digestate (8469.1 μS), because the electrical conductivity significantly affects the removal efficiency of the pollutants (Al-Shannag et al, 2015). It is inversely proportional to the ED (Akbal and Camci, 2011) and determines the effect of the mobility of ions in relation to the applied electric field (Vasudevan et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Swine manure digestate treatment using electrocoagulation

Kunz

Steffens

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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Anaerobic biodigestion is an appropriate alternative for the treatment of swine wastewater due to its biogas generation properties and the possibility of its application as a source of energy for heating or electricity. However, digestate can still contain high levels of turbidity, organic carbon and nutrients and must be correctly managed as a biofertilizer, or treated to avoid any impact on the environment. Considering this, electrocoagulation (EC) shows promise as a technology because of its ease of handling and high efficiency in effluent remediation. This study aimed to evaluate the performance of EC in a batch system in the treatment of swine wastewater digestate. The wastewater used in the treatment was sampled from a 10 m 3 biodigestor effluent (digestate) located at Concórdia, Santa Catarina, Brazil. A batch-scale experiment was carried out to evaluate the following two variables: electrode distance (ED) and voltage applied (V). The removal efficiency levels (%) for the best operational condition (2 cm, 5 V) after 30 min were: 97 %, 98 %, 77 % and 10 % for color, turbidity, total organic carbon (TOC) and total nitrogen (TN), respectively. The EC batch system produced efficient results, underlining its promise as an alternative to be applied in the treatment of digestate.

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Section: Resultsmentioning

confidence: 99%

Swine manure digestate treatment using electrocoagulation

Kunz

Steffens

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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“…Analisis data memperkirakan nilai konstanta kecepatan reaksi penurunan kontaminan thorium diawali dengan memilih persamaan tertentu untuk diuji dengan cara integral melalui metode-metode grafik dengan membandingkan kurva orde satu dan orde dua yang dapat dilihat dari nilai R 2 , yaitu koefisien kuadrat korelasi yang merupakan indikator model kinetika yang baik [11].…”

Section: Kinetika Dengan Cara Integralunclassified

“…Prediksi nilai konstanta kecepatan reaksi pemindahan thorium dengan proses elektrokoagulasi dengan pengaruh tegangan mempunyai nilai k rata-rata adalah 0,005 ppm -1 min -1 . Prediksi penentuan konstanta reaksi dapat dilihat dari nilai R 2 dengan nilai yang saling mendekati dan seragam [11]. Prediksi penurunan thorium dengan proses elektrokoagulasi mengikuti orde dua mempunyai kecenderungan yang sama dengan hasil penelitian sebelumnya.…”

Section: Kinetika Dengan Cara Integralunclassified

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Model Matematik Reduksi Thorium dalam Proses Elektrokoagulasi

Prayitno

Ridantami

2017

EKSPLORIUM

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ABSTRAKReduksi thorium dengan elektrokoagulasi telah dilakukan pada limbah radioaktif yang memiliki kadar kontaminan thorium 5x10 -4 kg/l dengan sistem batch menggunakan elektrode-elektrode aluminium. Penelitian ini bertujuan untuk mengetahui model matematik reduksi thorium melalui kecepatan reaksi, konstanta laju reaksi, dan orde reaksi yang dipengaruhi oleh parameter proses elektrokoagulasi seperti tegangan, waktu, jarak elektrode, dan pH. Penelitian menghasilkan kondisi optimum tegangan 12,5V, jarak 1 cm, pH 7, dan waktu proses 30 menit dengan efisiensi sebesar 99,6%. Prediksi nilai konstanta laju penurunan thorium didapatkan melalui perhitungan matematika dengan metode integral. Hasil penelitian menunjukkan laju penurunan thorium mengikuti konstanta orde dua dengan nilai konstanta laju penurunan thorium 5x10 -3 KgL -1 min -1 .

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“…The salts used were Pb(NO 3 ) 2 (3)(4)(5)(6)(7)(8)(9), particle size (0.112-0.850 mm), biosorbent dosage (1-10 g/L), initial metal ion concentration (10-50 mg/L), contact time (up to 24 h) and temperature (20-40 °C) were investigated in a batch mode. After sorption process, biomass separated from the samples by filtering and the filtrate was analysed by atomic adsorption spectrometer (Varian Spectra A240 FS)…”

Section: Biosorption Experimentsmentioning

confidence: 99%

Biosorption Behaviour of an Arid Land Plant, Euphorbia Rigida, Towards to Heavy Metals: Equilibrium, Kinetic and Thermodynamic Studies

Kılıç

Özsin

Apaydın-Varol

et al. 2017

Hittite J. Sci. Eng.

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H igh release of heavy metals from industries like metal processing, refining, paint, battery industry and mining causes serious wastewater contamination because of the non-degradable nature of metals. Released metal ions become poisonous for both plants and living organisms after certain concentrations since they tend to pile up in living organisms and cause various disturbances and disorders [1-4]. Hence, various physical and/or chemical treatment techniques have been applied for many years, such as chemical reduction, precipitation, solvent extraction, coagulation, flocculation and filtration, membrane processes [5][6][7]. However, feasible applications of the mentioned techniques are limited due to high operational and initial capital costs, low efficiency and production of undesirable sludge. Many of the mentioned techniques have substantial penalties, such as demand for high-priced equipment, high reagent consumption, high energy requirement, inadequate metal removal, and generation of toxic sludge. On the other hand, adsorption systems are rapidly gaining

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Heavy metal ions removal from metal plating wastewater using electrocoagulation: Kinetic study and process performance

Cited by 462 publications

References 29 publications

Swine manure digestate treatment using electrocoagulation

Swine manure digestate treatment using electrocoagulation

Model Matematik Reduksi Thorium dalam Proses Elektrokoagulasi

Biosorption Behaviour of an Arid Land Plant, Euphorbia Rigida, Towards to Heavy Metals: Equilibrium, Kinetic and Thermodynamic Studies

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