Pulp and Paper Mill Effluent Management

Elnakar, Haitham; Buchanan, Ian D.

doi:10.2175/106143018x15289915807164

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…To date, the biological and physicochemical processes were applied for the treatment of wood and paper wastewater (Azimi et al, 2019;Elnakar & Buchanan, 2018Gholami et al, 2016Gholami et al, , 2017Kamali & Khodaparast, 2015;Khan et al, 2013). In biological methods, microorganisms are used as a solitary treatment or in the combination with other physical methods and/or chemical technologies (Singhal & Thakur, 2009).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Azimi

Shirini

Pendashteh

2022

Water Environment Research

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The efficiency of removing chemical oxygen demand (COD) and turbidity from wood wastewater was investigated using a sequencing batch reactor (SBR) and the photo‐Fenton process. A total of 94.78% of COD reduction and 99.9% of turbidity removal were observed under optimum conditions of SBR, which consisted of an organic loading rate (OLR) of 0.453 kg COD m−3 day−1, mixed liquor suspended solids (MLSS) of 4564 mg L−1, and cycle time of 48 h. A magnetic α‐Fe2O3@TiO2@SO3H nanocatalyst was prepared as a heterogeneous Fenton reagent. The Fourier transform infrared (FT‐IR), X‐ray diffraction (XRD), Brunauer–Emmett–Teller (BET), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray (EDX), and elemental mapping (MAP) analyses were performed to determine the structure and morphology of synthesized photocatalyst. The response surface methodology (RSM) was used to optimize the process based on a central composite design (CCD). The maximum photocatalytic degradation of 87.54% and COD reduction of 83.35% were achieved at a dosage of 0.6 g L−1 of catalyst, 30 mg L−1 of H2O2, and pH of 3.5 for 45 min. The results indicated that a combination of the SBR process and α‐Fe2O3@TiO2@SO3H could be used as an effective method for the treatment of wood wastewater. Practitioner Points A combination of the SBR and photo‐Fenton process was introduced as an impressive method for wood industry wastewater treatment. The efficiencies of COD, BOD5, NO3‐N, PO4‐P, and color removal were obtained according to the standard limits in Iran. To our knowledge, this study is the first report of the use of synthesized α‐Fe2O3@TiO2@SO3H photocatalyst for the wood industry wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Azimi

Shirini

Pendashteh

2022

Water Environment Research

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“…Secondary treatment technologies, such as primary clarification and biological treatment, are widely employed for papermaking wastewater treatment (Buyukkamaci and Koken 2010;Svensson and Berntsson 2014). However, conventional processes are not effective for the degradation of refractory organic pollutants; thus, secondary treated effluents still contain a considerable chemical oxygen demand (COD), toxicity, and color (Grötzner et al 2018;Elnakar and Buchanan 2019). Many studies have shown that effluents from P&P mills seriously damage the environment (Ali and Sreekrishnan 2001;Sridhar et al 2011;Wang et al 2012b;Marques et al 2017;Abedinzadeh et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of organic matter from papermaking wastewater by CoFe2O4-coated sand in batch and fixed-bed systems

Zeng

Peng

et al. 2021

BioRes

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The secondary treated effluents of pulp and paper mills contain high chemical oxygen demand (COD) that is associated with organic matter. Therefore, this study explores the adsorption of substances contributing to COD using CoFe2O4 and quartz sand-coated CoFe2O4 in batch and fixed-bed column experiments. X-ray diffraction, scanning electron microscopy, Brunauer–Emmett–Teller analysis, and X-ray photoelectron spectroscopy were used to characterize the adsorbents. The quartz sand-loaded CoFe2O4 exhibited a larger pore volume and average pore size. Batch experiments revealed that adsorption on CoFe2O4 closely fit the pseudo-second-order model. To explore the effects of bed depth, feed flow rate, and initial solution pH on the breakthrough characteristics of CoFe2O4-coated sand, fixed-bed column experiments were conducted, and the breakthrough curves were drawn from the ratio of influent COD concentration to effluent COD concentration. The breakthrough time decreased with an increase in the feed flow rate and initial pH but increased with the bed depth. According to the X-ray photoelectron spectroscopy analysis, CoFe2O4-coated sand showed excellent stability due to negligible leaching of metallic elements. These findings have important implications for the advanced treatment of industrial wastewater.

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Treatment of wood industry wastewater by combined coagulation–flocculation–decantation and fenton process

Azimi

Shirini

Pendashteh

2020

Water Environment Research

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In the present research, the efficiency of turbidity and chemical oxygen demand (COD) reduction from the wood industry wastewater (WIW) by the use of a combined coagulation–flocculation–decantation (CFD) – Fenton process was studied. Firstly, the performance of three coagulants such as ferric chloride (FeCl3), aluminum sulphate (alum), and polyaluminum chloride (PACl) was evaluated. The polyacrylamide (PAM) was used as a flocculant. The results showed that the polyaluminum chloride had a high removal efficiency. The COD reduction of 84.1% and turbidity removal of 82.0% of were obtained in coagulation–flocculation–decantation (CFD). Secondly, Fenton process was optimized, by the use of a response surface methodology (RSM), with application of a central composite design (CCD). The maximum turbidity and COD removal obtained by this process were 94.1% and 72.5% respectively, under optimal conditions ([Fe2+] = 250 mg/L, [H2O2] = 500 mg/L, pH 3.5, time 60 min). The kinetics of COD and turbidity removal were determined by the model of first order. In conclusion, the combination of coagulation–flocculation–decantation (CFD) – Fenton process presented as a remarkable method for wood wastewater treatment. Practitioner points A combination of coagulation–flocculation–decantation and Fenton process was introduced for the wood industry wastewater treatment. A designed experimental approach for treatment of wood industry wastewater using a Fenton process was studied. The yields of COD, BOD5, N‐NO3, P‐PO4, and dye removal were obtained according to the standard limits in Iran.

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Pulp and Paper Mill Effluent Management

Cited by 6 publications

References 11 publications

Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Adsorption of organic matter from papermaking wastewater by CoFe2O4-coated sand in batch and fixed-bed systems

Treatment of wood industry wastewater by combined coagulation–flocculation–decantation and fenton process

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Pulp and Paper Mill Effluent Management

Cited by 6 publications

References 11 publications

Synthesis, characterization, and application of α‐Fe2O3@TiO2@SO3H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Synthesis, characterization, and application of α‐Fe2O3@TiO2@SO3H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Adsorption of organic matter from papermaking wastewater by CoFe2O4-coated sand in batch and fixed-bed systems

Treatment of wood industry wastewater by combined coagulation–flocculation–decantation and fenton process

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Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater

Synthesis, characterization, and application of α‐Fe₂O₃@TiO₂@SO₃H photo‐Fenton catalyst for photocatalytic degradation of biologically pre‐treated wood industry wastewater