Adsorption of algal organic matter on activated carbons from alternative sources: Influence of physico-chemical parameters

Leite, Luan de Souza; Hoffmann, Maria Teresa; Vicente, F.; Santos, Danilo Vitorino dos; Daniel, Luiz Antônio

doi:10.1016/j.jwpe.2021.102435

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…IOM can be extracted by different methods such as freeze/ thawing cycles, 38,49 autoclaving, 48 ultrasonication, 18 and physically grinding cells. 23 Autoclaving is not recommended as it can degrade some organics.…”

Section: Aom Characteristicsmentioning

confidence: 99%

“…The analyzed studies (Table 1) were undertaken at pH 7 for chlorination and 7–8 for chloramination, which agrees with the range (pH 7–8) found in eutrophicated reservoirs. 18 The pH affects chlor(am)ine reactivity with AOM and the stability of DBPs. 67 For instance, a pH increase from 5.0 to 7.0 increased THM, HAN, HAL, and HAA yields during AOM chlor(am)ination but reduced the formation of CH, HK, and TCNM.…”

Section: Key Factors In the Dbp Formationmentioning

confidence: 99%

“…In this context, recent studies have investigated advanced treatments, such as activated carbon filtration and chemical oxidation processes, to increase AOM removal before disinfection. [18][19][20] Chemical disinfection using chlor(am)ination has incontestable importance to the supply of drinking water, deactivating pathogenic microorganisms. 21 Dissolved natural organic matter (NOM), including AOM, generates DBPs which are often classified into carbonaceous (C-DBPs) and nitrogenous (N-DBPs).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Algal organic matter as a disinfection by-product precursor during chlor(am)ination: a critical review

Leite,

Daniel,

Bond

2023

Environ. Sci.: Water Res. Technol.

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Section: Aom Characteristicsmentioning

confidence: 99%

Section: Key Factors In the Dbp Formationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Algal organic matter as a disinfection by-product precursor during chlor(am)ination: a critical review

Leite,

Daniel,

Bond

2023

Environ. Sci.: Water Res. Technol.

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“…Algal population management can be accomplished through biological processes like slow sand filters or activated sludge. Coagulation, Copper sulfate, Activated Carbon, Nano Particle, Ozonation, Hydrogen Peroxide, and Chlorination are the principal chemical processes (Chen et al 2020;Bibak et al 2013;Leite et al 2021;Fuente et al 2019;Kalbar 2021;Deng et al 2022 andGuo et al 2017). Most chemicals, however, are overpriced and too general, harming aquatic organisms that aren't their intended targets.…”

Section: Introductionmentioning

confidence: 99%

The effect of the combined system of Hydrodynamic Cavitation, Ozone, and Hydrogen Peroxide on the removal of Chlorophyll a and Organic substances in the raw water

Shokoohi

Rahmani

Asgari

et al. 2022

Preprint

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increased nutrient levels and algal blooms can also cause drinking water problems in communities near dead zones and upstream. humans, fish, marine mammals, birds, and other animals are all adversely affected by the toxins produced by toxic algal blooms. The purpose of this study is The effect of The combined system of Hydrodynamic Cavitation, Ozone (O3), and Hydrogen Peroxide (H2O2) on the removal of Chlorophyll a and Organic substances in the raw water entering the Sanandaj treatment plant. In this study, we examined the following variables: pH, Retention Time, Pressure, Distance, Ozone dose, and Hydrogen Peroxide dose. Utilizing Taguchi design methodology, experiments were planned and optimized. Chlorophyll a and Total Organic Carbon (TOC) can be removed most effectively under the following conditions: 5 bar of cavitation pressure, 90 min of retention time, a pH of 5, 1 m3/h of Flow, a distance of 25 cm from the orifice, 3 gr/h of ozone, and 2 gr/l of Hydrogen Peroxide. The most efficient factor in the degradation of TOC and Chlorophyll a was determined to be cavitation pressure based on the percentage contributions of each factor (38.64 percent and 35.05 percent, respectively). H2O2 was found to have the most negligible impact on degradation efficiency (4.24 percent and 4.11 percent, respectively).

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Removal of methylene blue and safranin orange pollutants from liquid effluents by soy residue

et al. 2023

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Methylene blue and safranin orange dyes, which are used in the textile and pharmaceutical industries, can severely damage the environment and human health. This study investigated the use of okara residue as an alternative biosorbent for the removal of methylene blue and safranin orange dyes. Substantial amounts of okara residue are generated daily during the processing of soy milk in the agro‐industrial sector. Dye adsorption was not affected by pH. An adsorption study identified the optimal experimental conditions as: 298 K, 0.03 g of adsorbent in 30 mL of dye solution at a concentration of 50 mg L−1, and a contact time of 300 min for methylene blue dye, and 298 K, 0.02 g of adsorbent in 30 mL of dye solution at a concentration of 50 mg L−1, and a contact time of 200 min for safranin orange dye; the maximum adsorption capacities were 93.201 ± 0.01 and 184 592 ± 0.02 mg g−1, respectively. Okara has considerable advantages over other natural materials as an alternative for the treatment of industrial effluents. Because it is easily obtained and does not require any physicochemical treatment, adsorption does not require any specific operation temperature. In addition, okara exhibited a high adsorption capacity compared to other natural materials that require chemical and physical processing for adsorbent preparation.

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Adsorption of algal organic matter on activated carbons from alternative sources: Influence of physico-chemical parameters

Cited by 13 publications

References 25 publications

Algal organic matter as a disinfection by-product precursor during chlor(am)ination: a critical review

Algal organic matter as a disinfection by-product precursor during chlor(am)ination: a critical review

The effect of the combined system of Hydrodynamic Cavitation, Ozone, and Hydrogen Peroxide on the removal of Chlorophyll a and Organic substances in the raw water

Removal of methylene blue and safranin orange pollutants from liquid effluents by soy residue

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