Wastewater Treatment and Reuse in the Food Industry

Barbera, Marcella; Gurnari, Giovanni

doi:10.1007/978-3-319-68442-0

Cited by 41 publications

(47 citation statements)

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“…In addition, the BOD 5 /COD ratio, known as the “biodegradability ratio”, was >0.5 (BOD 5 /COD = 0.95) which reflects that these effluents were potentially biodegradable and, therefore, a biological treatment for such wastewaters is feasible. [ 40,41 ]…”

Section: Resultsmentioning

confidence: 99%

Assessment of Phosphate Laundries Wastewater Phytotoxicity and Biotreatment Assays

Moula

Borgi

Loukil

et al. 2020

CLEAN Soil Air Water

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The phytotoxicity potential of phosphate laundries wastewater (PLW) is assessed. Likewise, the assays of biotreatment of the PLW by microbial detoxification are investigated. Chemical characterization results show that PLW are alkaline, saline, highly turbid, and rich in suspended matter and total solids. PLW samples are loaded with potentially toxic metals, presented in decreasing order as follows: calcium (1230 mg L−1), potassium (1032 mg L−1), iron (275.45 mg L−1), lead (1.64 mg L−1), zinc (1.12 mg L−1), copper (1.04 mg L−1), and cadmium (1.03 mg L−1). Besides, PLW exhibits high phytotoxicity values for Raphanus sativus, Medicago sativa, and Sorghum bicolor seeds germination. The microbiological enumeration reveals considerable autochthonous microflora. Biotreatment includes five selected native strains (Se, S16, S19, S20, and S29) used as a tool of PLW detoxification. The strains tested manifest a bioprocessing performance according to the following decreasing order: S29 > S16 > S20 > S19 > Se. The biotreated phosphate laundries wastewater (BTPLW) achieves a noticeable reduction of toxicity. Indeed, analysis of the correlation matrix between the potentially toxic metal content and the germination index (GI) values shows significant correlations (p ≤ 0.01).

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Section: Resultsmentioning

confidence: 99%

Assessment of Phosphate Laundries Wastewater Phytotoxicity and Biotreatment Assays

Moula

Borgi

Loukil

et al. 2020

CLEAN Soil Air Water

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“…Due to the fact that huge amounts of wastewater (WW) are generated as a by-product of yeast production, considerable investment is needed for its neutralization [3]. Therefore, attempts are constantly under way to seek the possibility of applying wastewater sludge as a source of energy or as a raw material for further use [4][5][6]. Studies conducted to this date have demonstrated that it is theoretically possible to derive 9 times more energy from wastewater compared to the energy needed to clean it [7,8].…”

Section: Introductionmentioning

confidence: 99%

Microbial Fuel Cell with Ni–Co Cathode Powered with Yeast Wastewater

Włodarczyk

2018

Energies

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Wastewater originating from the yeast industry is characterized by high concentration of pollutants that need to be reduced before the sludge can be applied, for instance, for fertilization of croplands. As a result of the special requirements associated with the characteristics of this production, huge amounts of wastewater are generated. A microbial fuel cell (MFC) forms a device that can apply wastewater as a fuel. MFC is capable of performing two functions at the same time: wastewater treatment and electricity production. The function of MFC is the production of electricity during bacterial digestion (wastewater treatment). This paper analyzes the possibility of applying yeast wastewater to play the function of a MFC (with Ni–Co cathode). The study was conducted on industrial wastewater from a sewage treatment plant in a factory that processes yeast sewage. The Ni–Co alloy was prepared by application of electrochemical method on a mesh electrode. The results demonstrated that the use of MFC coupled with a Ni–Co cathode led to a reduction in chemical oxygen demand (COD) by 90% during a period that was similar to the time taken for reduction in COD in a reactor with aeration. The power obtained in the MFC was 6.1 mW, whereas the volume of energy obtained during the operation of the cell (20 days) was 1.27 Wh. Although these values are small, the study found that this process can offer an additional level of wastewater treatment as a huge amount of sewage is generated in the process. This would provide an initial reduction in COD (and save the energy needed to aerate wastewater) as well as offer the means to generate electricity.

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“…Thus, the Langmuir represents the equilibrium distribution of metal ions between the solid and liquid phases. [30] The Langmuir model assumes that the uptake of metal ions occurs on a homogeneous surface by monolayer adsorption without any interaction between adsorbed ions. [31] Based upon these assumptions, Langmuir represented the following equation:…”

Section: Langmuir Isotherm Modelmentioning

confidence: 99%

“…By ignoring the extremely low and large value of concentrations, the model assumes that heat of adsorption (function of temperature) of all molecules in the layer would decrease linearly rather than logarithmic with coverage. [30,31,34] This equation implies that the adsorption is characterized by a uniform distribution of binding energies, up to some maximum binding energy. [39] The model is given by the following equation: [30,31]…”

Section: Langmuir Isotherm Modelmentioning

confidence: 99%

The preliminary adsorption investigation of Urtica Dioica L. biomass material as a potential biosorbent for heavy metal ions

Dimitrijević¹,

Stanković²,

Djordjević³

et al. 2019

Studia UBB Chemia

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The removal of Cu(II) ions from aqueous solutions by adsorption onto nettle after incomplete incineration (IIN) has been studied in batch mode. The experimental isotherm results have been fitted using Langmuir, Freundlich, Temkin and Dubinin-Radushkevich equations. A comparison of kinetic models applied to the adsorption of Cu(II) ions on the adsorbent was evaluated for the pseudo-first order, the pseudo-second order and Elovich kinetic models. The pseudo-second order kinetic model was found to correlate the experimental data well. To evaluate competitive adsorption the batch experiments were carried out among the Cu(II), Pb(II) and Cd(II). The affinity order for the ternary system was Pb(II) > Cu(II) > Cd(II). FTIR and SEM analysis indicated that IIN could be used as an efficient biosorbent whose chemical structure and morphology is not altered during adsorption process.

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Wastewater Treatment and Reuse in the Food Industry

Cited by 41 publications

References 0 publications

Assessment of Phosphate Laundries Wastewater Phytotoxicity and Biotreatment Assays

Assessment of Phosphate Laundries Wastewater Phytotoxicity and Biotreatment Assays

Microbial Fuel Cell with Ni–Co Cathode Powered with Yeast Wastewater

The preliminary adsorption investigation of Urtica Dioica L. biomass material as a potential biosorbent for heavy metal ions

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