Adsorptive removal of gentian violet from aqueous solution using CoFe2O4/activated carbon magnetic composite

Liang, Yao-Dong; He, Yongjun; Wang, Tingting; Lei, Lihua

doi:10.1016/j.jwpe.2018.11.013

Cited by 48 publications

(24 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7) and displayed in Table 2. part, this shows that the rate and external mass transfer is not controlled only by the intraparticle diffusion but also it occurs simultaneously [48]. Based on observations in Fig.…”

Section: Adsorption Mechanismmentioning

confidence: 61%

See 1 more Smart Citation

Application of Modified Green Algae Nannochloropsis sp. as Adsorbent in the Sequential Adsorption of Methylene Blue and Cu(II) Cations in Solution

Buhani

Wijayanti

Suharso

et al. 2020

Preprint

View full text Add to dashboard Cite

Biomass of algae is a very potent adsorbent for absorbing liquid waste containing heavy metals and organic dyes. This study purposes to confirm the ability of adsorbents from green algae Nannochloropsis sp. modified with silica (ASN) and followed by coating magnetite particles (ASN-MPs) to absorb simultaneously the mixture of methylene blue (ME) and Cu(II) cations in aqueous solution. Simultaneous sorption of ME and Cu(II) cations to ASN and ASN-MPs was carried out by the Batch method with the interaction pH condition 7, contact time (15–120 minutes), and initial concentrations of ME and Cu(II) cations (0.1–1.0 mmol·L− 1). The simultaneous sorption parameters of ME and Cu(II) cations by ASN-MPs trend to comply the pseudo-second-order kinetics model by rate constant values for pseudo-second-order (k2), respectively 8.98 × 10− 3 and 9.78 × 10− 3 (g·mmol− 1·min− 1). The ME adsorption pattern and Cu(II) cations in the competition on ASN-MPs adsorbents, each tends to follow the Freundlich and Langmuir adsorption isotherms. Based on adsorption data, Cu(II) cations have a greater adsorption rate and capacity (qexp) compared to ME at the same contact time and initial concentration. Modified adsorbent from algae Nannochloropsis sp. with silica matrix and magnetite particle coating, is an adsorbent that has a high effectiveness in the collective sorption of ME and Cu(II) cations. Therefore, these adsorbents can be used for the adsorption of cation mixtures of heavy metals and organic dyes that are cationic in solution.

show abstract

Section: Adsorption Mechanismmentioning

confidence: 61%

“…The mechanism of adsorption to ME and Cu(II) cations on ASN-MPs was analyzed using the proposal of Weber and Morris (Eq. 5) about the intra-particle diffusion pattern (IPD) [ 48,49]. The IPD pattern can be utilized to study the diffusion process of targets absorbed by adsorbents that can be used in simulating kinetics data [50].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Application of Modified Green Algae Nannochloropsis sp. as Adsorbent in the Sequential Adsorption of Methylene Blue and Cu(II) Cations in Solution

Buhani

Wijayanti

Suharso

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The diffusion of intraparticle is indicated at the second linear section in the adsorption period of 60-120 minutes. The origin (C ≠ 0) does not traversed by the second linear part, this shows that the rate and external mass transfer is not controlled only by the intraparticle diffusion but also it occurs simultaneously [43]. Based on observations in Fig.…”

Section: Adsorption Mechanismmentioning

confidence: 68%

“…The mechanism of adsorption to ME and Cu(II) cations on ASN-MPs was analyzed using the proposal of Weber and Morris (Eq. ( 6)) about the intra-particle diffusion pattern (IPD) [ 43,44]. The IPD pattern can be utilized to study the diffusion process of targets absorbed by adsorbents that can be used in simulating kinetics data [45].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Application of modified green algae Nannochloropsis sp. as adsorbent in the simultaneous adsorption of methylene blue and Cu(II) cations in solution

Buhani

Wijayanti

Suharso

et al. 2021

Preprint

View full text Add to dashboard Cite

Biomass of algae is a very potent adsorbent for absorbing liquid waste containing heavy metals and organic dyes. This study purposes to confirm the ability of adsorbents from green algae Nannochloropsis sp. modified with silica (ASN) and followed by coating magnetite particles (ASN-MPs) to absorb simultaneously the mixture of methylene blue (ME) and Cu(II) cations in aqueous solution. Simultaneous sorption of ME and Cu(II) cations to ASN and ASN-MPs was carried out by the Batch method with the interaction pH condition 7, contact time 90 minutes, and initial concentrations of ME and Cu(II) cations (0.1 - 1.0 mmol L-1). Based on adsorption data, Cu(II) cations have a greater adsorption rate and capacity (qm) compared to ME at the same contact time and initial concentration. The adsorption capacity (qm) values of the bi-component ME and Cu(II) cation mixture in ASN and ASN-MPs were 1.385 x 10-1 and 5,319 x 10-1 mmolequiv g-1, respectively, with the binary Langmuir adsorption isotherm constant for Cu(II) cations greater than ME. Modified adsorbent from algae Nannochloropsis sp. with silica matrix and magnetite particle coating, is an adsorbent that has a high effectiveness in the collective sorption of ME and Cu(II) cations. Therefore, these adsorbents can be used for the adsorption of cation mixtures of heavy metals and organic dyes that are cationic in solution.

show abstract

“…There are many isotherms reported in the literature, and any of the isotherm models can be used to determine the amount of adsorbate adsorbed over hydrochar surface. Recently the adsorption of Cu 2+ ions has been studied over faecal sludge hydrochar by using Langmuir and Freundlich isotherms [77,89]).…”

Section: Hydrochar and Adsorption Isothermsmentioning

confidence: 99%

A Comprehensive Review on Hydrothermal Carbonization of Biomass and its Applications

et al. 2019

View full text Add to dashboard Cite

Hydrothermal carbonization (HTC) has gained a lot of interest in the last few years for the process production of hydrochar from the different kinds of biological materials such as agricultural waste. Therefore, a thorough review of the literature on HTC has been conducted, which is more energy-efficient and involves hydrochar preparation at a lower temperature without any specific requirements for pressure. This review article primarily differentiates between the hydrochar and biochar developed from various sources. Also, a comparative analysis has been done to evaluate the maximum efficiency of hydrochar production. The various parameters, which influence the hydrochar yield to include pH, temperature, the concentration of the modifying agent, duration of exposure, salt, and phenolic compounds, have also been highlighted in this review. The scale-up processes for industrial level hydrochar production, along with bioreactor designs, have also been discussed. We have also focused on various applications of hydrochar, such as adsorbent in wastewater treatment, carbon sequestration, gas adsorption and in the field of agriculture for soil amendment. The adsorption effects of hydrochar towards the partial and proportionate adsorption of heavy metals and hazardous chemicals have been depicted. This review of the literature clearly illustrates the role of HTC in environmental remediation of soil, air and water and its usage in various industries.

show abstract

Adsorptive removal of gentian violet from aqueous solution using CoFe2O4/activated carbon magnetic composite

Cited by 48 publications

References 80 publications

Application of Modified Green Algae Nannochloropsis sp. as Adsorbent in the Sequential Adsorption of Methylene Blue and Cu(II) Cations in Solution

Application of Modified Green Algae Nannochloropsis sp. as Adsorbent in the Sequential Adsorption of Methylene Blue and Cu(II) Cations in Solution

Application of modified green algae Nannochloropsis sp. as adsorbent in the simultaneous adsorption of methylene blue and Cu(II) cations in solution

A Comprehensive Review on Hydrothermal Carbonization of Biomass and its Applications

Contact Info

Product

Resources

About