Response surface optimization and modeling in heavy metal removal from wastewater—a critical review

Bayuo, Jonas; Rwiza, Mwemezi J.; Mtei, Kelvin

doi:10.1007/s10661-022-09994-7

Cited by 21 publications

(5 citation statements)

References 155 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis of variance (ANOVA) was applied to check the statistical adequacy of the quadratic model (Table 4 ). The significance of each term in the quadratic model is determined by the model F and P- values 42 . In general, a higher F-value and lower P-value of a variable revealed the significance of the model terms 43 .…”

Section: Resultsmentioning

confidence: 99%

Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology

Desalegn

Bekele

Femi

2023

Sci Rep

View full text Add to dashboard Cite

Toxic cadmium (Cd) was removed from water using eggshell-based hydroxyapatite (HAp) grafted bentonite (HAp/bentonite) composite through a straightforward chemical synthesis route. The as-prepared adsorbents were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller analysis (BET). Optimization of the initial adsorbate concentration, adsorbent dosage, pH, and contact time—all of which affect the adsorption process—was performed using the central composite design (CCD) of the response surface methodology (RSM). 99.3 percent adsorptive removal efficiency was observed at an initial concentration of 61.58 mg/L of Cd (II), with an adsorbent dosage of 1.58 g, a solution pH of 5.88, and a contact time of 49.63 min. The analysis of variance (ANOVA) was performed, and the multiple correlation coefficient (R2) was found to be 0.9915 which confirms the significance of the predicted model. The Langmuir isotherm model best represented the adsorption isotherm data, which also predicted a maximum sorption capacity of 125.47 mg/g. The kinetic data were best described by the pseudo-second order model.

show abstract

Section: Resultsmentioning

confidence: 99%

Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology

Desalegn

Bekele

Femi

2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…where C ads is the concentration of adsorbate desorbed, C des is the concentration of adsorbate adsorbed, m is the quantity of adsorbent, and V is the volume of the desorbing solution 60–62.…”

Section: Regeneration Of Bioadsorbentsmentioning

confidence: 99%

Reusing Waste to Save Our Water: Regenerable Bioadsorbents for Effective Oil Sequestration

Machado,

Mulky

2024

ChemBioEng Reviews

View full text Add to dashboard Cite

As climate change and environmental damage in the world are rising, the need for efficient waste management and purification is ever‐increasing. At present, the existence of oil in water constitutes a large proportion of this pollution. This oil comes from various sources, including effluents released by industries and oil spills. As such, the removal of oil from marine waters is crucial to combat pollution and preserve the ecology. Bioadsorption has emerged as an efficient method, but the sustainability and eco‐friendliness of this method are yet to be seen. This review summarizes the removal of different types of oil from the marine environment using bioadsorption, i.e., adsorption by biological materials. It briefly describes the adsorption mechanism by means of various bioadsorbents with oil. The preparation and performance of different types of bioadsorbents used in industries are discussed, along with some examples of bioadsorbents that can be applied for the removal of various oils from water. Also, an overview of the regeneration of the adsorbent by various methods is given.

show abstract

“…where q max,i is the monolayer adsorption capacity for component i (mg g −1 ), K SP,i is the Sips isotherm constant (L mg 79 This model, which makes use of a Langmuir isotherm, can be explained using eqn (12) below. 80 q e ; i; multi ¼…”

Section: Relation Meaning Referencementioning

confidence: 99%

“…3 have been used, including biological treatment, coagulation, membrane separation procedures, chemical precipitation, ion exchange, enhanced oxidation, and adsorption utilizing commercial activated carbon, to lessen the risks posed by heavy metals and limit their build-up in wastewater. 12,13 Due to the high cost involved in the production and regeneration of exhausted commercial activated carbons, the adsorption of heavy metals using commercial activated carbons is not economical for use in wastewater treatment in underdeveloped countries. 14 Nevertheless, adsorption, using locally and naturally available adsorbents from different biomass or feedstocks as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

2023

Self Cite

View full text Add to dashboard Cite

show abstract

Response surface optimization and modeling in heavy metal removal from wastewater—a critical review

Cited by 21 publications

References 155 publications

Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology

Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology

Reusing Waste to Save Our Water: Regenerable Bioadsorbents for Effective Oil Sequestration

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Contact Info

Product

Resources

About