Study of coagulating/flocculating characteristics of organic polymers extracted from biowaste for water treatment

Bautista, Brenda Belén Buenaño; Vera, Edwin; Sandoval, María Belén Aldás

doi:10.15446/ing.investig.v39n1.69703

Cited by 11 publications

(8 citation statements)

References 53 publications

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“…Another highly pronounced band in mucilage occurs at 1030 cm-1; it is attributed to the HC-OH stretching of cyclic alcohols, which is also present in starch, although in low signal, and would correspond to the -CO group of polysaccharides [16,17]. On the other hand, a series of bands below 925 cm -1 was observed in the starch (Figure 1), which is characteristic for this type of material, and would be made up of the -CH and -NH stretching as well as linkage vibrational modes C-C, -CO, and C-X [18][19][20], with less intensity for mucilage.…”

Section: Ir Analysismentioning

confidence: 94%

Heavy metal removal by biopolymers-based formulations with native potato starch/nopal mucilage

Choque-Quispe

Ramos-Pacheco

Ligarda-Samanez

et al. 2020

redin

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The contamination of water bodies by heavy metals is a critical problem for human health and ecosystems, and it can bioaccumulate in organisms to toxic levels and even lead to the living being’s death. This research aimed to synthesize and characterize a biopolymer with the capacity to remove heavy metals in wastewater, elaborated from potato starch, glycerin, and nopal mucilage. Native potato starch of the Allcca sipas variety was extracted by conventional methods; the mucilage was extracted with ethanol. Four formulations of biopolymers were synthesized at 60 and 70 °C. The solubility, structural characteristics, and adsorption capacity of heavy metals were evaluated. Starch, mucilage, and biopolymers presented predominant functional groups as -OH, -C-O-, -NH-, -C-H-, -C-OH determined by FTIR, allowing to remove up to 50.18% of Al, 56.81% of As, 35.95% of Cr, 37.43% of Hg and 73.22% of Pb determined through an ICPE-OES, for a contact time of 100 minutes at pH 5.0, heavy metal removal and solubility were significantly influenced (p-value < 0.05) by the addition of starch and mucilage. The synthesized biopolymers present a high capacity for heavy metal removal in wastewater.

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Section: Ir Analysismentioning

confidence: 94%

Heavy metal removal by biopolymers-based formulations with native potato starch/nopal mucilage

Choque-Quispe

Ramos-Pacheco

Ligarda-Samanez

et al. 2020

redin

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“…A large range of natural fibers including edible, nonedible, agro-wastes, and chemically modified derivatives of fibers, have all been tested for pollutant adsorption due to their environmental friendliness and economic viability. , Some examples are straws, grasses, peels, coconut and corn husks, sawdust and other wood waste, and wool-based products . However, the removal efficiency of these materials tends to be significantly lower than other engineered adsorbent materials or more complex composites, reaching maximum adsorption capacities of <100 mg/g, when other complex materials may go up to few hundreds. , However, natural fibers can also be incorporated into composite hydrogels.…”

Section: Adsorbent Materialsmentioning

confidence: 99%

Desorption Strategies and Reusability of Biopolymeric Adsorbents and Semisynthetic Derivatives in Hydrogel and Hydrogel Composites Used in Adsorption Processes

Alcalde-Garcia,

Prasher,

Kaliaguine

et al. 2023

ACS Eng. Au

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Adsorption is a promising technique for the removal of persistent contaminants, since it is a relatively cheap process with low energy requirements and does not produce secondary contamination. However, the large-scale implementation of an adsorption process usually involves a dual column process for either pressure swing or temperature swing operations. Therefore, the reusability of adsorbents is a key characteristic to consider and evaluate but is often overlooked during the development of new materials. To be reused, the adsorbent should successfully release the contaminant by a desorption or regeneration step without compromising the chemical and physical stability of the matrix. The efficiency of desorption/regeneration methods depends greatly on the chemical characteristics of the contaminants, the nature of the adsorbents, and the adsorption mechanisms responsible for the adsorbent−adsorbate interactions. This review focuses on the desorption strategies that have been used for the regeneration of biobased hydrogels and hydrogel composites, materials that have been successfully applied in the adsorption of wastewater contaminants. The strategies can be divided into chemical and physical methods. The chemical methods include the use of desorption agents, photocatalytic oxidation, and CO 2 bubbling; and the physical methods include thermal and ultrasonic treatments. These regeneration strategies have shown different efficiencies as well as specific advantages and drawbacks that need to be considered to select the most suitable method for a specific application.

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“…The spent Pistacia powders were non-toxic to Lepidium sativum plant due to their biodegradable nature and the germination percentage was 82.2% after three days. Spent plant powders can be added as a soil quality enhancer as it increases permeability, water holding capacity, organic matter content and is a source of soil nitrate and phosphate supply (19,73,74).…”

Section: Phytotoxicity Tests For Treated Domestic Wastewater and Spen...mentioning

confidence: 99%

Application of Pistacia atlantica Leaves Powder as Natural Material To Remove Nitrate and Phosphate Ions From Domestic Wastewater by Characterization, Bio-removal, and Phytotoxicity Studies

ALHAJALİ

NİZAM²,

ALMOSTAFA³

2022

Journal of the Turkish Chemical Society Section A: Chemistry

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Application of Pistacia atlantica Leaves Powder as Natural Material To Remove Nitrate and Phosphate Ions From Domestic Wastewater by Characterization, Bio-removal, and Phytotoxicity StudiesObaida Alhajali1* , Adnan Ali-Nizam1 , Rasha Almostafa2 1Damascus University, Department of Plant Biology, Damascus, Syria.2International University for Science and Technology, Department of General and Analytical Chemistry, Syria. Abstract: Description of Pistacia leaves powder using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), Energy-dispersive X-ray spectroscopy (EDX), specific surface area according to nitrogen adsorption (SBET) and methylene Blue (MB), and point of zero charge determination (pHpzc). A series of batch adsorption tests were conducted to study effect of various factors (plant powders dose, contact time, temperature, pH) on the percentage of nitrate and phosphate removal from domestic wastewater. The adsorption kinetics, regeneration ability test of plant powder, and phytotoxicity tests for treated water and spent powder on germination were studied. Results of SBET analysis showed that Pistacia leaves powders have a low surface area and microscopic pores, SEM images revealed rough surfaces with uneven cavities, EDX analysis showed that there are high percentages of carbon and oxygen, good percentages for nitrogen, and few percentages of potassium, calcium, magnesium, phosphorous, sulfur and chlorine, and FTIR analysis showed that there are more than five distinct absorption peaks. The maximum value of nitrate and phosphate removal was 76.47% and 52.20%, respectively, at powder dose of 2 g/L, temperature 25 °C, and pH 5, and the percentage of nitrate and phosphate removal increased with increasing contact time until equilibrium was reached after 120 min for nitrate and 180 min for phosphate, and It was found that adsorption of ions follows kinetics of reaction from pseudo-second-order model, and powders can be Regeneration and used for two successive cycles with a slight decrease in removal efficiency. Germination tests on Lepidium sativum indicate no phytotoxicity. That is, Pistacia leaves powder is one of the natural products that are effective in removing nitrate and phosphate from domestic wastewater.

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Study of coagulating/flocculating characteristics of organic polymers extracted from biowaste for water treatment

Cited by 11 publications

References 53 publications

Heavy metal removal by biopolymers-based formulations with native potato starch/nopal mucilage

Heavy metal removal by biopolymers-based formulations with native potato starch/nopal mucilage

Desorption Strategies and Reusability of Biopolymeric Adsorbents and Semisynthetic Derivatives in Hydrogel and Hydrogel Composites Used in Adsorption Processes

Application of Pistacia atlantica Leaves Powder as Natural Material To Remove Nitrate and Phosphate Ions From Domestic Wastewater by Characterization, Bio-removal, and Phytotoxicity Studies

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