Removal of nutrients from pulp and paper biorefinery effluent: Operation, kinetic modelling and optimization by response surface methodology

Jagaba, Ahmad Hussaini; Kutty, Shamsul Rahman Mohamed; Naushad, Mu.; Lawal, Ibrahim Mohammed; Noor, Azmatullah; Affam, Augustine Chioma; Birniwa, Abdullahi Haruna; Abubakar, Sule; Soja, Usman Bala; Abioye, Kunmi Joshua; Bathula, Chinna

doi:10.1016/j.envres.2022.114091

Cited by 41 publications

(17 citation statements)

References 76 publications

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“…The adsorption capacity of CMLDH-HAP-N for NH 4 + -N remained constant over pH 2–6; after that the adsorption capacity decreased with the increasing pH resulting from the formation of dissolved OH – and CO 3 2– complexes, supported by the findings of pH pzc . Conversely, when the pH rose, the P adsorption capacity increased. − Adsorption dosages from 1 to 5 g/L reduced the adsorption capacities while increasing the removal efficiencies of NH 4 + -N and P (Figure S5D). One possible explanation for the reduced adsorption capacity at higher dosages could be unsaturated adsorption sites indicating that excess CMLDH-HAP might limit the available binding sites.…”

Section: Resultsmentioning

confidence: 99%

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Akter,

Hosen,

Gilroyed

et al. 2024

ACS Sustainable Resour. Manage.

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The recovery of nutrients, particularly nitrogen (N) and phosphorus (P), from wastewater plays a crucial role in mitigating eutrophication and advancing sustainability. This paper introduces a novel approach for recovering these essential elements from municipal wastewater (MWW) using an innovative composite, calcined magnetic layered double hydroxide/ hydroxyapatite (CMLDH-HAP). The adsorbent was synthesized by precipitating hydroxyapatite onto magnetic layered double hydroxides derived from agricultural waste, followed by calcination. The adsorption behaviors, characterized by heterogeneous monolayer chemisorption adsorption, and the underlying mechanisms, including interlayer cation and ligand exchange and surface precipitation, demonstrated sustainable recovery of NH 4 + -N and P from real wastewater treatment plant effluent in column experiments, with a breakthrough time of 15 min. The N-and P-adsorbed CMLDH-HAP was then utilized as an eco-friendly, slowrelease fertilizer to enhance the germination, growth, and blooming of Madagascar periwinkle (Catharanthus roseus). Furthermore, the desorption of N and P using a 0.5 M NaHCO 3 solution enabled the regeneration of CMLDH-HAP, rendering it suitable for recycling N and P from wastewater. Economic viability considerations explored more cost-effective wastewater treatment options, underscoring the potential of CMLDH-HAP. This study thus presents a sustainable solution that integrates the reuse of agricultural waste, effective wastewater treatment, and the recovery of N and P nutrients as fertilizer sources. Implementing the demonstrated technologies can help minimize the environmental impact of wastewater and promote circular economy principles.

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Section: Resultsmentioning

confidence: 99%

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Akter,

Hosen,

Gilroyed

et al. 2024

ACS Sustainable Resour. Manage.

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“…Analysis of variance (ANOVA) was performed by using an F-test to evaluate the statistical significance of the model equation ( Table 3 ). The ANOVA evaluation provided insight into the significance of the relationship between the system parameters and the system response as well as the variance of the results [ 17 , 18 ]. The model had an F-value of 2.13, which implied that the model was significant, with a low 0.01% chance that this F-was caused by noise.…”

Section: Resultsmentioning

confidence: 99%

“…3 c. Increasing the Cu + concentration enhanced lignin degradation from 45 to 70%. Fu, Wang, and Tang [ 18 ] reported that additional • OH radicals can be generated by the reaction of Cu + ions with hydrogen peroxide, which can degrade organic pollutants into smaller molecules [ 29 ]. Other researchers have found that • OH radicals can recombine when the catalyst concentration increases [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Lignin removal from synthetic wastewater via Fenton-like reaction over Cu supported on MCM-41 derived from bagasse: Optimization and reaction intermediates

Sriprom¹,

Neramittagapong²,

Lin³

et al. 2023

Heliyon

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“…Given that multiple process parameters impact the extraction process and properties of extracted compounds, the response surface methodology (RSM) combined with the design of experiments (DOE) was chosen for optimization. The RSM is an effective mathematical and statistical tool for evaluating the effect of independent variables and their interactions. − In the literature, the RSM and DOE optimization have mainly been reported in the ultrasonic extraction of different biomasses, including tree leaves, for the recovery of bioactive compounds. , …”

Section: Introductionmentioning

confidence: 99%

Valorizing Assorted Logging Residues: Response Surface Methodology in the Extraction Optimization of a Green Norway Spruce Needle-Rich Fraction To Obtain Valuable Bioactive Compounds

Tienaho,

Fidelis,

Brännström

et al. 2024

ACS Sustainable Resour. Manage.

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During stemwood harvesting, substantial volumes of logging residues are produced as a side stream. Nevertheless, industrially feasible processing methods supporting their use for other than energy generation purposes are scarce. Thus, the present study focuses on biorefinery processing, employing response surface methodology to optimize the pressurized extraction of industrially assorted needle-rich spruce logging residues with four solvents. Eighteen experimental points, including eight center point replicates, were used to optimize the extraction temperature (40−135 °C) and time (10−70 min). The extraction optimization for water, water with Na 2 CO 3 + NaHSO 3 addition, and aqueous ethanol was performed using yield, total dissolved solids (TDS), antioxidant activity (FRAP, ORAC), antibacterial properties (E. coli, S. aureus), total phenolic content (TPC), condensed tannin content, and degree of polymerization. For limonene, evaluated responses were yield, TDS, antioxidant activity (CUPRAC, DPPH), and TPC. Desirability surfaces were created using the responses showing a coefficient of determination (R 2 ) > 0.7, statistical significance (p ≤ 0.05), precision > 4, and statistically insignificant lack-of-fit (p > 0.1). The optimal extraction conditions were 125 °C and 68 min for aqueous ethanol, 120 °C and 10 min for water, 111 °C and 49 min for water with Na 2 CO 3 + NaHSO 3 addition, and 134 °C and 41 min for limonene. The outcomes contribute insights to industrial logging residue utilization for value-added purposes.

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Removal of nutrients from pulp and paper biorefinery effluent: Operation, kinetic modelling and optimization by response surface methodology

Cited by 41 publications

References 76 publications

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Lignin removal from synthetic wastewater via Fenton-like reaction over Cu supported on MCM-41 derived from bagasse: Optimization and reaction intermediates

Valorizing Assorted Logging Residues: Response Surface Methodology in the Extraction Optimization of a Green Norway Spruce Needle-Rich Fraction To Obtain Valuable Bioactive Compounds

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