Produced water treatment using olive leaves

Ibrahim, Taleb H.; Sabri, Muhammad Ashraf; Khamis, Mustafa; Elsayed, Yehya; Sara, Ziad; Hafez, Barra

doi:10.5004/dwt.2017.0720

Cited by 11 publications

(10 citation statements)

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“…The efficiency of natural coagulants depends on pH, since the coagulation process is based on positive and negative charges, which pH is responsible for changing. Thus, when comparing the obtained results with the results of other authors, several different pH conditions were found, particularly in regards to WW and coagulant characteristics, to lead to distinctive pH optimum operational conditions [ 9 , 10 , 13 ]. Regarding ferrous sulfate, pH 5.0 showed a higher efficiency, since colloidal particles are negatively charged when the pH is around this value, contributing to charge neutralization, interparticle bridging, precipitation, and enmeshment [ 36 ].…”

Section: Resultsmentioning

confidence: 61%

“…Comparing coagulants dosage with other authors, Kuppusamy et al [ 9 ] used Quercus robur (acorn peel) to remove dyes from WW, and applied a dosage of 5 g L −1 . The effect of olive leaf powder was studied in removing crude oil from water, with the best results obtained with a dosage of 3 g L −1 [ 10 ]. The results were different from the ones obtained in the present research; however, coagulation is a complex process, and the dosage effect is dependent on the type of coagulant, water pH, characteristics of WW, and other coagulation conditions [ 11 , 13 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…Several authors have been studying the use of the previously mentioned natural coagulants for treating different types of WW; however, to the best of our knowledge, in none of these studies has CFD been combined with photo-Fenton treatment [ 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Food By-Product Valorization by Using Plant-Based Coagulants Combined with AOPs for Agro-Industrial Wastewater Treatment

Martins

Jorge

Lucas

et al. 2022

IJERPH

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Re-using and adding value to by-products is one of the current focuses of the agri-food industry, following the Sustainable Development Goals of United Nations. In this work, the by-products of four plants, namely chestnut burr, acorn peel, olive leaf, and grape stem were used as coagulants to treat elderberry wastewater (EW), a problematic liquid effluent. EW pre-treatment using these natural coagulants showed promising results after pH and coagulant dosage optimization. However, the decrease in total organic carbon (TOC) was not significant, due to the addition of the plant-based natural coagulants which contain carbon content. After this pre-treatment, the photo-Fenton advanced oxidation process was selected, after preliminary assays, to improve the global performance of the EW treatment. Photo-Fenton was also optimized for the parameters of pH, H2O2, Fe2+, and irradiance power, and the best conditions were applied to the EW treatment. Under the best operational conditions defined in the parametric study, the combined results of coagulation–flocculation–decantation (CFD) and photo-Fenton for chestnut burr, acorn peel, olive leaf, and grape stem were, respectively, 90.2, 89.5, 91.5, and 88.7% for TOC removal; 88.7, 82.0, 90.2 and 93.1%, respectively, for turbidity removal; and finally, 40.6, 42.2, 45.3, and 39.1%, respectively, for TSS removal. As a final remark, it is possible to suggest that plant-based coagulants, combined with photo-Fenton, can be a promising strategy for EW treatment that simultaneously enables valorization by adding value back to food by-products.

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Section: Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 99%

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Food By-Product Valorization by Using Plant-Based Coagulants Combined with AOPs for Agro-Industrial Wastewater Treatment

Martins

Jorge

Lucas

et al. 2022

IJERPH

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“…Two kinetic models, a pseudo-first order and a pseudo-second order, were applied to the experimental data to investigate the kinetics of the oil adsorption onto the Na-alginate beads. Equations (3) and (4) were used to determine the kinetics parameters for the pseudo-first-order and the pseudo-second-order, respectively [ 53 ]. The rate constants of the pseudo-first order and pseudo-second orders are k 1 (min −1 ) and k 2 (g mg −1 min −1 ), respectively.…”

Section: Resultsmentioning

confidence: 99%

Clay-Alginate Beads Loaded with Ionic Liquids: Potential Adsorbents for the Efficient Extraction of Oil from Produced Water

et al. 2022

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Produced water (PW) generated from the petroleum industry, during the extraction of oil and gas, has harmful impacts on human health and aquatic life, due to its complex nature. Therefore, it is necessary to treat it before discharging it into the environment in order to avoid serious environmental concerns. In this research, oil adsorption from PW was investigated using clay-alginate beads loaded with ionic liquids (ILs), as the adsorbent material. The effects of several process parameters, such as the initial concentration of oil, contact time, pH, and temperature on the removal efficiency of the beads, were analyzed and optimized. Different characterization methods, such as the Fourier transform infrared spectrophotometer (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and thermal gravimetric analysis (TGA), were used to investigate the surface morphology, the chemical bond structure and functional group, and the thermal stability of the ILs-based beads. The results revealed that the clay-alginate-ILs beads indicated a removal efficiency of 71.8% at the optimum conditions (600 ppm initial oil concentration, 70 min contact time, 10 pH, and at room temperature) with an adsorption capacity of 431 mg/g. The FTIR analysis confirmed the successful chemical bond interaction of the oil with the beads. The SEM analysis verified that the beads have a porous and rough surface, which is appropriate for the adsorption of oil onto the bead’s surface. The TGA analysis provides the thermal degradation profile for the clay-alginate-ILs. The beads used in the adsorption process were regenerated and used for up to four cycles.

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“…The adsorbents showed good oil removal efficiency in the range between 20 and 90 %. Adsorbents from biological origin have also been considered for this regard [12][13][14][15]. For example, eggshells was used as adsorbent for oil removal from water contaminated with oil (none emulsified) with 100% oil removal efficiency when using adsorption dosage of 1.8 g/L [12].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Application of graphene nanoplatelets and graphene magnetite for the removal of emulsified oil from produced water

Chacra

Sabri

Ibrahim

et al. 2018

Journal of Environmental Chemical Engineering

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Graphene and its magnetite derivative were used as adsorbents for removal of emulsified oil from produced water. The experimental parameters for maximum emulsified oil removal efficiency and effective regeneration of these adsorbents were determined. The best parameters in terms of dosage, contact time, pH, salinity and temperature were 3.00 g/L, 60.0 minutes, 10.0, 1500 ppm and 25.0 o C for graphene nanoplatelets, and 4.00 g/L, 30.0 minutes, 3.5, 1000 ppm and 25.0 o C, for graphene magnetite, respectively. Packed column studies were carried out utilizing graphene magnetite as adsorbent for the removal of oil from produced water. The packed column operation was assessed using Thomas, Yan et al., Clark, Bohart and Adams and Yoon and Nelson models. Thomas model was found to best describe the column experimental data. The column was regenerated using n-Hexane and reused several times for produced water treatment with negligible decrease in its initial capacity.

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Produced water treatment using olive leaves

Cited by 11 publications

References 0 publications

Food By-Product Valorization by Using Plant-Based Coagulants Combined with AOPs for Agro-Industrial Wastewater Treatment

Food By-Product Valorization by Using Plant-Based Coagulants Combined with AOPs for Agro-Industrial Wastewater Treatment

Clay-Alginate Beads Loaded with Ionic Liquids: Potential Adsorbents for the Efficient Extraction of Oil from Produced Water

Application of graphene nanoplatelets and graphene magnetite for the removal of emulsified oil from produced water

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