کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8917059 | 1642738 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Combined biological and advance oxidation processes for paper and pulp effluent treatment
ترجمه فارسی عنوان
فرایندهای اکسیداسیون بیولوژیکی و پیشرفته برای پردازش پساب کاغذ و خمیر پالپ
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
During recent years, the socio political pressure to develop suitable technologies capable of treating wastewater from the paper and pulp industry has increased due to strict environmental regulations. System closure could potentially lead to substantial operating and discharge cost savings. This study evaluates the potential of combining an aerobic moving bed biofilm reactor (MBBR) (biological) and a Fenton-like system (advanced oxidation processes) for treating recycle mill effluent (RME). The performance of the moving bed biofilm reactor (MBBR) was evaluated at three different hydraulic residence times (HRT). The HRT used were 24, 16 and 5â¯h and the corresponding total chemical oxygen demand (COD) removals were 55, 49 and 43% respectively. The volatile organic acids (VOA) removals were 63.5, 58.7 and 53% respectively. The Kincannon-Stover model was used to describe the kinetic behaviour of the MBBR. The calculated KB and Umax parameters for the COD were 26.37â¯g.Lâ1.dâ1 and 15.06â¯g.Lâ1.dâ1 respectively. For the VOA, the KB and Umax parameters were 11.81â¯g.Lâ1.dâ1 and 8.87â¯g.Lâ1.dâ1. The Fenton-like experiments were carried out in batch runs. The first experiments were carried out to determine the optimal reaction parameters. Maximum COD removals were found to be at a pH of 3.33, Fe3+ dosage of 1,000â¯mg/L and H2O2 of 14.55â¯mM. Pseudo-first order reaction kinetics was used to describe the kinetic characteristics of the Fenton-like treatment system. The calculated kinetic parameters ηmax (%) and kCOD (minâ1) were 53.8% and 0.112 minâ1 respectively at a pH of 3.24, Fe3+ dosage of 250â¯mg/L and a H2O2 dosage of 77â¯mM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: South African Journal of Chemical Engineering - Volume 25, June 2018, Pages 116-122
Journal: South African Journal of Chemical Engineering - Volume 25, June 2018, Pages 116-122
نویسندگان
A. Brink, C. Sheridan, K. Harding,