The isotherm, kinetic and thermodynamic studies of the cadmium uptake by <i>colpomenia sinuosa</i>

Zarei, Saeid; Niad, Mahmood

doi:10.1080/01496395.2019.1577262

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…Numerous diseases linked to Cd toxicity include renal dysfunction, nervous system damage, teratogenic symptom, and so forth. Therefore, it is crucial to treat contaminated wastewater before discharging it into the environment to prevent/reduce adverse effects on the receiving environment [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

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Batch Study of Cadmium Biosorption by Carbon Dioxide Enriched Aphanothece sp. Dried Biomass

Satya

Harimawan

Haryani

et al. 2020

Water

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The conventional method for cadmium removal in aqueous solutions (1–100 mg/L) is ineffective and inefficient. Therefore, a batch biosorption reactor using a local freshwater microalga (originating from an urban lake, namely, Situ Rawa Kalong-Depok) as dried biosorbent was tested. Biosorbent made from three kinds of cyanobacterium Aphanothece sp. cultivars (A0, A8, and A15) were used to eliminate cadmium (Cd2+) ions in aqueous solution (1–7 mg/L). The biosorbents were harvested from a photobioreactor system enriched with carbon dioxide gas of 0.04% (atmospheric), 8%, and 15% under continuous light illumination of about 5700–6000 lux for 14 d of cultivation. Produced dried biosorbents had Brunauer–Emmet–Teller (BET) surface area ranges of 0.571–1.846 m2/g. Biosorption of Cd2+ was pH and concentration dependent. Sorption was spontaneous (ΔG = −8.39 to −10.88 kJ/mol), exothermic (ΔH = −41.85 to −49.16 kJ/mol), and decreased randomness (ΔS = −0.102 to −0.126 kJ/mol. K) on the interface between solid and liquid phases when the process was completed. The kinetic sorption data fitted best to the pseudo-second-order model (k2 = 2.79 × 10−2, 3.96 × 10−2, and 4.54 × 10−2 g/mg.min). The dried biosorbents of A0, A8, and A15, after modeling with the Langmuir and Dubinin–Radushkevich isotherm models, indicated that cadmium binding occurred through chemisorption (qmax, D-R = 9.74 × 10−4, 4.79 × 10−3, and 9.12 × 10−3 mol/g and mean free energy of 8.45, 11.18, and 11.18 kJ/mol) on the monolayer and homogenous surface (qmax, Langmuir of 12.24, 36.90, and 60.24 mg/g). In addition, the results of SEM, EDX, and FTIR showed that there were at least nine functional groups that interacted with Cd2+ (led to bond formation) after biosorption through cation exchange mechanisms, and morphologically the surfaces changed after biosorption. Biosorbent A15 indicated the best resilient features over three cycles of sorption–desorption using 1 M HCl as the desorbing eluent. These biosorbents can be a potent and eco-friendly material for treating aqueous wastewater.

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Section: Introductionmentioning

confidence: 99%

“…Experimental parameters such as pH, temperature (T), Cd 2+ concentration, as well as biosorbent performance after regeneration were investigated in batch mode. Results of this study were then compared to other studies using various macroalgae [3,[13][14][15] and microalgae biomass [6,[16][17][18]].…”

Section: Introductionmentioning

confidence: 99%

Batch Study of Cadmium Biosorption by Carbon Dioxide Enriched Aphanothece sp. Dried Biomass

Satya

Harimawan

Haryani

et al. 2020

Water

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“…Recomendamos mais estudos para testar diferentes abordagens, como compatibilidade de cruzamento e sequenciamento de próxima geração (por exemplo, filogenômica).Palavras-Chave: barcode, Brasil, Colpomenia sinuosa, cox3, diversidade filogenética, linhagens ocultas, métodos de delimitação de espécies, Phaeophyceae, variação genética Colpomenia species are important primary producers and potentially economically valuable. Colpomenia species have been proposed as bioindicators(Guerra-García et al 2006), as model-organism in photosynthesis(Forster and Dring 1994) and in heavy metal uptake studies(Cirik et al 2012, Zarei andNiad 2020), a food item for amphipods(Poore and Steinberg 1999) and as feed for farmed animals and for human consumption(Wong et al 1999, Rohani-Ghadikolaei et al 2012, Tabarsa et al 2012. Colpomenia spp.…”

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Filogeografia e diversidade do gênero Colpomenia (Ectocarpales, Phaeophyceae) no Brasil e Austrália

Martins¹

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Soltos a voar dispostos Achar um ninho Nem que seja no peito um do outro de Oliveira & LevyTo be a scientist is to be naive. We are so focused on our search for truth, we fail to consider how few actually want us to find it. But it is always there, whether we see it or not, whether we choose to or not. The truth doesn't care about our needs or wants. It doesn't care about our governments, our ideologies, our religions. Valerij Legasov AcknowledgementsAgradecimentos Gostaria de agradecer à minha orientadora Profa. Dra. Valéria Cassano, com quem tenho uma química de trabalho perfeita. Me ensinou muito durante todo esse período e não poderia ser mais grato.Ao Prof. Dr. Carlos Frederico Gurgel, pela duradoura amizade que se soma cada dia mais e resulta em ótimos frutos.O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Código de Financiamento 001 Esse trabalho não seria possível sem a ajuda de todos os colegas que colaboraram com amostras de todo o Brasil:

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Re-use of wasted sludge to treat industrial pollutants

Zeb

Linjie

et al. 2021

Water Air Soil Pollut

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The isotherm, kinetic and thermodynamic studies of the cadmium uptake by colpomenia sinuosa

Cited by 8 publications

References 28 publications

Batch Study of Cadmium Biosorption by Carbon Dioxide Enriched Aphanothece sp. Dried Biomass

Batch Study of Cadmium Biosorption by Carbon Dioxide Enriched Aphanothece sp. Dried Biomass

Filogeografia e diversidade do gênero Colpomenia (Ectocarpales, Phaeophyceae) no Brasil e Austrália

Re-use of wasted sludge to treat industrial pollutants

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