Effect of temperature and pH on the biosorption of ammonium onto Posidonia oceanica fibers: Equilibrium, and kinetic modeling studies

Wahab, Mohamed Ali; Jellali, Salah; Jedidi, Naceur

doi:10.1016/j.biortech.2010.06.099

Cited by 62 publications

(51 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values of k2 were much higher for the PCP 0.05 and PCP 0.1 than for the PCP raw. Thus, these results suggest that the pseudo-second-order model, based on the assumption that the rate limiting step might be chemical biosorption involving valency forces through sharing or exchange of electrons between sorbent and sorbate, and provides the best correlation of the data [5,6,26]. Intraparticle diffusion model parameters for the effect of 50 mg/L concentration are shown Table 2.…”

Section: Kinetics Studiesmentioning

confidence: 82%

“…Adsorption capacity of adsorbent increased remarkably with increasing pH values up to 8, and then increase rate was lower with increasing pH over 8. It was observed for the adsorption of ammonium by zeolite synthesized from fly ash, sawdust and Posidonia oceanica fibers within the pH range 5.5-10.5 [5,6,22] and by composites of g-alumina/KAS gel within the pH range 5-10 [23]. However the optimum removal efficiency of ammonium by the most types of zeolite tested is achieved when operating at pH value of 6 and 7 [8,24].…”

Section: Influence Of Phmentioning

confidence: 95%

“…Indeed, the speed of adsorption is strongly influenced by several parameters such as the status of the solid matrix that has generally heterogeneous reactive sites, and the physicochemical conditions under which the adsorption takes place. The study of adsorption kinetics is very useful for understanding the mechanisms that are involved and also for the design of future facilities adsorption on a large scale [5,6]. The three most popular kinetic model and their linear forms are shown in Table 1.…”

Section: Kinetics Studiesmentioning

confidence: 99%

“…Ammonium often present in different types of waters and wastewater, can end up in lakes, rivers and drinking water reservoirs with effluent discharges. Higher concentration of ammonium will cause a sharp decrease of dissolved oxygen and obvious toxicity in aquatic organisms [4,5,6]. For those instances, ammonia removal from the polluted waters has become necessary in order to maintain proper water quality for the environmental problems.…”

Section: Introductionmentioning

confidence: 99%

“…Different physical, chemical and biological methods such as adsorption, chemical precipitation, membrane filtration, reverse osmosis, ion exchange, air stripping, breakpoint chlorination and biological nitrification and denitrification were used for removal of ammonia from polluted waters [4,5,6]. Several authors have reported the adsorption of ammonia from polluted waters on activated carbon and zeolite [7,8,9]; however, the high cost of activated carbon and the low abundance of zeolite in many countries, as well as the high costs of regeneration processes by chemical and thermal procedures, are a problem [6]. In addition, several research works have been performed to search for efficient and low-cost materials such as clay and zeolite [10,11,12,13]; limestone [14]; waste paper, refuse cement and concrete [15]; fly ash and sepiolite [9] to remove ammonia from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Demirak¹,

Keskin²,

Şahin³

et al. 2015

Mugla Journal of Science and Technology

View full text Add to dashboard Cite

Pine cone, a popular agricultural waste, was investigated as a novel ammonium biosorbent in its raw and sodium hydroxide modified form. Surface modification of pine cone powder were carried out using sodium hydroxide solution of concentarions (0,05 and 0,1mg/L) was described by a pseudo-second-order model predicting a chemisorption process. In addition, the equilibrium data were well characterized by the Langmuir isotherm model that confirmed the mono-layer coverage. The surface properties of raw pine cone powder and its sodium hydroxide modified form were analyzed by Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) and powder X-ray diffraction (XRD). The chemical composition of pine cone powder before and after biosorption of ammonium is discussed in relation to the XRD and SEM-EDS results. The results showed that the surface of pine cone powder samples is modified by sodium hydroxide solution and the chemical composition of pine cone powder samples is changed after biosorption of ammonium. This from presents an interesting option for tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium

show abstract

Section: Kinetics Studiesmentioning

confidence: 82%

Section: Influence Of Phmentioning

confidence: 95%

Section: Kinetics Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Demirak¹,

Keskin²,

Şahin³

et al. 2015

Mugla Journal of Science and Technology

View full text Add to dashboard Cite

show abstract

Ammonium removal by alkaline‐activated coconut coir from synthetic and ground waters

Pham

2022

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

High ammonium concentration in groundwater in Viet Nam is a threaten consequence to Vietnamese people in suburban and rural areas. Coconut coir is an economic waste of Viet Nam's agriculture with million tons generated every year. In this work, NaOH treatment of raw coconut coir (RCC) was implemented to obtain activated biomaterial (NaACC) for evaluation of ammonium adsorption from synthetic and ground waters. First, the effects of adsorbent dosage, initial ammonium concentration, reaction time, temperature on adsorption performance, adsorption isotherm, and kinetics for ammoniumcontained synthetic water were investigated. Second, the ammonium adsorption performance of NaACC from a natural groundwater was also evaluated. The removal efficiencies of ammonium were 49.5, 60.6, and 66.7% with maximum adsorption capacities of 0.51, 0.67, and 0.74 mg/g at temperatures of 30, 40, and 50 C, respectively, at pH 7.0, NaACC dose 40 g/L, initial ammonium concentration 40 mg/L, and reaction time 144 h. The NaACC displayed the best ammonium adsorption following Langmuir isotherm (R 2 = 0.9990) and pseudo-second-order kinetic model (R 2 = 0.9989). The NaACC also exhibited a good ammonium adsorption in natural groundwater with removal efficiency and adsorption capacity of 82.6% and 0.77 mg/g, respectively.Particularly, NaACC can be regenerated up to three cycles for consecutive adsorption of ammonium in groundwater without loss of its adsorptive performance. Therefore, NaACC derived from agricultural wastes was a potential biomaterial for cleaning ammonium from contaminated groundwater.

show abstract

A Critical Insight into Biomass Derived Biosorbent for Bioremediation of Dyes

et al. 2019

View full text Add to dashboard Cite

Organic pollutants, such as dyes released during industrial operations are one of the major reasons for the degradation of water quality. However, treatment technologies to remediate these high volumes of wastewaters are often not sufficient. Hence, the excess dye wastewater generated is usually discharged without prior treatment. The use of adsorbents such as activated carbon is widely employed to separate dye molecules from wastewater. Biochar is a popular recent alternative for the treatment of dye‐bearing effluents to selectively isolate dye molecules. Biochar is normally manufactured in the oxygen free environment by thermal degradation of organic materials. On the other hand, dyes are extensively employed in many textile industries because of their desirable properties including attractive colour, water‐fast and easy application methods. Nevertheless, during the dyeing process of cellulose fibres around half of the applied dyes may enter the wash water, and these let outs are highly resistant to traditional wastewater treatment methods. Henceforth, new techniques need to be applied for successful remediation of dye wastewaters. In this perspective, an endeavor has been made in this work to explore the possibility and practicability of biochar as sorbent material for dyes.

show abstract

Effect of temperature and pH on the biosorption of ammonium onto Posidonia oceanica fibers: Equilibrium, and kinetic modeling studies

Cited by 62 publications

References 41 publications

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Ammonium removal by alkaline‐activated coconut coir from synthetic and ground waters

A Critical Insight into Biomass Derived Biosorbent for Bioremediation of Dyes

Contact Info

Product

Resources

About