High-pressure electrocoagulation system with periodic air replenishment for efficient dye wastewater treatment: Reaction dynamics and cost evaluation

التفاصيل البيبلوغرافية
العنوان: High-pressure electrocoagulation system with periodic air replenishment for efficient dye wastewater treatment: Reaction dynamics and cost evaluation
المؤلفون: Shou-Jen Lee, Natacha Martin, Ngoc Chung Le, Yi-Hsuan Chou, Vinh Ya, Kwang-Ho Choo, Chi-Wang Li
المصدر: Journal of Cleaner Production. 213:1127-1134
بيانات النشر: Elsevier BV, 2019.
سنة النشر: 2019
مصطلحات موضوعية: Renewable Energy, Sustainability and the Environment, 020209 energy, Strategy and Management, medicine.medical_treatment, 05 social sciences, Inorganic chemistry, 02 engineering and technology, Industrial and Manufacturing Engineering, Electrocoagulation, Anode, Ferrous, Eriochrome Black T, chemistry.chemical_compound, Adsorption, chemistry, Wastewater, 050501 criminology, 0202 electrical engineering, electronic engineering, information engineering, medicine, Ferric, Sewage treatment, 0505 law, General Environmental Science, medicine.drug
الوصف: Ferrous ions are the major Fe species generated from sacrificial iron anodes, but ferric ions are the more active ingredients for the removal of organic matters in the acidic pH region. Therefore, a novel high-pressure electrocoagulation (HPEC) system was devised to facilitate the Fe(II)-to-Fe(III) conversion under acidic pH conditions. The effects of operation pressure (0–3 bar) and initial pH value (3–10) on the removal of color and organics from synthetic dye wastewater containing Eriochrome Black T (EBT) were investigated. The operation costs of the HPEC were compared with that of the conventional electrocoagulation (CEC) processes. The HPEC outperformed the CEC, achieving complete color removal after a short reaction time. In the initial pH range of 8 owing to the formation of Fe(III)-EBT complexes and the ineffective removal of these complexes by coagulation or adsorption. The high removal efficiencies attained under acidic and neutral pH conditions were attributed to the effective Fe(II)-to-Fe(III) conversion by dissolved oxygen under pressure followed by the formation of Fe(OH)3 precipitates. The HPEC saves significant operating costs (45–70%) compared to the CEC process.
تدمد: 0959-6526
DOI: 10.1016/j.jclepro.2018.12.249
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::d0e77c7edfab21b3abece927dfbf1586
https://doi.org/10.1016/j.jclepro.2018.12.249
Rights: CLOSED
رقم الانضمام: edsair.doi...........d0e77c7edfab21b3abece927dfbf1586
قاعدة البيانات: OpenAIRE
الوصف
تدمد:09596526
DOI:10.1016/j.jclepro.2018.12.249