Removal of Microcystis Aeruginosa by oxidation-assisted coagulation: Effect of algogenic organic matter fraction changes on algae destabilization with Al hydrates

Lin, Jr-Lin; Nugrayanti, Mega Sidhi; Ika, Aldeno Rachmad; Karangan, Arthur

doi:10.1016/j.jwpe.2021.102142

Cited by 20 publications

(2 citation statements)

References 33 publications

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“…The TOC concentration of the samples was kept at 5 mg•L -1 for DOM analyses. The measurement of DOM was conducted only for the final sample using a fluorescence excitation-emission matrix (F-EEM) (RF-6000 fluorescence spectroscopy, Shimadzu, Japan) according to the previous study (Lin et al 2021). The average fluorescence intensity (AFI) measurement of DOM represents the summation of intensity in 4 fluorophore regions, i.e., soluble microbial products-like (SMPL), humic acid-like (HAL), fulvic acid-like (FAL), and aromatic protein-like (APL) substances.…”

Section: Methodsmentioning

confidence: 99%

The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor

Bagastyo¹,

Sidik²,

Anggrainy³

et al. 2022

J. Ecol. Eng.

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In this study, the effectiveness of the electrocoagulation (EC) process was evaluated based on the reduction of organic and nitrogenous contaminants in landfill leachate. A three-compartment electrochemical reactor as pre-treatment of stabilized landfill leachate was carried out ahead of biological treatment. The removal efficiencies of COD, BOD, ammonia, and nitrate were analyzed at pH 4, 6, and 8 with the current densities of 20.83 and 29.17 mA•cm -2 . At pH 4, the highest removal of COD and NH 4 + was obtained, i.e., in the range of 72-81% and 43-59%, respectively. The ratio of BOD 5 /COD was increased after EC, from initially 0.11 to 0.32 at pH 4. In addition, EC effectively removed humic substances in the leachate by targeting a large amount of high molecular weight humic substances, with around 10 3 kDa. However, the higher removal efficiency observed at higher current density leads to higher specific energy consumption. At a current density of 29.17 mA•cm -2 , the specific energy consumption obtained in EC was around 10-17 Wh•g -1 COD and 99-148 Wh•g -1 NH 4 + . This could be decreased up to 50% at an applied current density of 20.83 mA•cm -2 with slightly lower efficiencies.

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Section: Methodsmentioning

confidence: 99%

The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor

Bagastyo¹,

Sidik²,

Anggrainy³

et al. 2022

J. Ecol. Eng.

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“…For example, Ma et al (2023) evaluated the UV/Fenton system for the removal efficiency of Microcystis aeruginosa; a great removal (97.3%) of Microcystis aeruginosa cells was achieved [10]. Lin et al (2021) investigated the effect of sodium hypochlorite (NaOCl) oxidation-assisted polyaluminum chloride (PACl) coagulation on algae removal; the results demonstrated that the highest algae removal was around 99% [11]. investigated two solid peroxides and H 2 O 2 for the removal of Microcystis aeruginosa and found that H 2 O 2 and peroxymonosulfate (PMS) effectively removed algae in 2 d at pH 5.0, 7.0 and 9.0, while peroxydisulfate (PDS) was only effective at pH 5.0 [12].…”

Section: Introductionmentioning

confidence: 99%

Changes in Extracellular Microcystins (MCs) Accompanying Algae/Cyanobacteria Removal during Three Representative Algae/Cyanobacteria Inactivation Processes and an MC Diffusion Model in Still Water

Shi,

Fang,

et al. 2023

Water

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This study addresses the lack of comparative research on algae/cyanobacteria elimination technologies in the existing literature. Our investigation focused on evaluating the performance of three commonly used algae/cyanobacteria removal processes: ultrasound (20.8 kHz), copper sulfate and biotic algicide (Bacillus subtilis). The evaluation considered both algae/cyanobacteria removal efficacy and the consequent changes in extracellular microcystins (MCs). To achieve this, we employed real eutrophic water as the test water. The ultrasound treatment demonstrated effective algae/cyanobacteria removal, with an average rate of algae/cyanobacteria decreasing (RAD) ranging from 0.50 to 0.99 µg chlorophyll a per liter per minute (µg chlorophyll a/L·min). On the other hand, the copper sulfate and biotic algicide treatments exhibited relatively lower rates of algae/cyanobacteria removal, with average RAD values of 0.21 to 0.38 µg chlorophyll a per liter per day (µg chlorophyll a/L·d) and 0.10 to 0.13 µg chlorophyll a per liter per day (µg chlorophyll a/L·d), respectively. Moreover, we observed significant increases in extracellular MCs in the ultrasound and copper sulfate treatments. The corresponding values of the increment of extracellular MCs accompanying removal per microgramme (µg) chlorophyll a (IEMARMC) were 0.34 to 2.43 µg MCs per µg chlorophyll a (µg MCs/µg chlorophyll a) and 18.13 to 185.08 µg MCs per µg chlorophyll a (µg MCs/µg chlorophyll a), respectively. However, in certain conditions where sufficient dosages (0.5 to 2 mg/L) and reaction time (≥8 days) are provided, the biotic algicide treatment could result in a decrease in MCs compared to an untreated control group (IEMARMC: −43.94 to −32.18 µg MCs per µg chlorophyll a). This suggests that the biotic algicide effectively degraded the MCs. In addition, we developed a one-dimensional MC diffusion model in still water based on Newton’s second law, which exhibits excellent simulation capabilities.

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Effects and behaviors of Microcystis aeruginosa in defluorination by two Al-based coagulants, AlCl3 and Al13

et al. 2022

Chemosphere

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Removal of Microcystis Aeruginosa by oxidation-assisted coagulation: Effect of algogenic organic matter fraction changes on algae destabilization with Al hydrates

Cited by 20 publications

References 33 publications

The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor

The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor

Changes in Extracellular Microcystins (MCs) Accompanying Algae/Cyanobacteria Removal during Three Representative Algae/Cyanobacteria Inactivation Processes and an MC Diffusion Model in Still Water

Effects and behaviors of Microcystis aeruginosa in defluorination by two Al-based coagulants, AlCl3 and Al13

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