Removal of Total Phosphorus from Domestic Wastewater with Clay-Zeolite Medium

2013 ◽  
Vol 647 ◽  
pp. 753-757 ◽  
Author(s):  
Grace K. Luk
Keyword(s):  
Adsorption Isotherm ◽  
Removal Efficiency ◽  
Total Phosphorus ◽  
Contact Time ◽  
Domestic Wastewater ◽  
Scale Model ◽  
Isotherm Model ◽  
Chemical Adsorption ◽  
Solvent Concentration ◽  
Freundlich Adsorption Isotherm

Chemical adsorption of a clay-zeolite pellet medium is being investigated for the removal of total phosphorus from domestic wastewater. The effect of pellet composition, influent concentration, and contact time on the overall removal efficiency is being studied in a five-layer bench-scale model. Results showed that an equilibrium removal of 72% is achieved after a 3 hour contact time, supporting the Freundlich adsorption isotherm model based on the linearization of solute adsorption to equilibrium solvent concentration.

scholarly journals On-Site Total Phosphorus Removal From Wastewater

2021 ◽  
Author(s):  
Amanda L. Alaica
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Contact Time ◽  
Cost Effective ◽  
Chemical Adsorption ◽  
Media Composition ◽  
Solvent Concentration ◽  
Detention Time ◽  
Removal Capacity ◽  
Freundlich Adsorption Isotherm

Eutrophication is attributed to high phosphorus concentrations in our ecosystem, modifying water and habitat quality. As an industry-academia collaboration program, this thesis assists the development of Virtual Engineers’ (VE) technology of a cost-effective, efficient, and affordable on-site Total Phosphorus (TP) removal unit. By investigating the chemical adsorption of a clay-zeolite media, the objective was to demonstrate TP removal capacity; primarily focusing on pellet media composition and formation, influent concentration, contact time to overall removal efficiency. All stages of optimization analyses were conducted in a scaled-down testing unit based on a ¾ inch pellet diameter construction, for a modest 45 minute detention time, and achieved an optimized removal of approximately 45%. The final pellet selected was the non-conditioned VE design, at maximum furnace exposure, scaled up to a 1 inch diameter. Results showed that an equilibrium removal of 72% is achieved after a 3 hour contact time; supporting the research of Sun (2010) on the Freundlich Adsorption Isotherm linearization of solute adsorption to equilibrium solvent concentration.

scholarly journals On-Site Total Phosphorus Removal From Wastewater

2021 ◽  
Author(s):  
Amanda L. Alaica
Keyword(s):  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Contact Time ◽  
Cost Effective ◽  
Chemical Adsorption ◽  
Media Composition ◽  
Solvent Concentration ◽  
Detention Time ◽  
Removal Capacity ◽  
Freundlich Adsorption Isotherm

Eutrophication is attributed to high phosphorus concentrations in our ecosystem, modifying water and habitat quality. As an industry-academia collaboration program, this thesis assists the development of Virtual Engineers’ (VE) technology of a cost-effective, efficient, and affordable on-site Total Phosphorus (TP) removal unit. By investigating the chemical adsorption of a clay-zeolite media, the objective was to demonstrate TP removal capacity; primarily focusing on pellet media composition and formation, influent concentration, contact time to overall removal efficiency. All stages of optimization analyses were conducted in a scaled-down testing unit based on a ¾ inch pellet diameter construction, for a modest 45 minute detention time, and achieved an optimized removal of approximately 45%. The final pellet selected was the non-conditioned VE design, at maximum furnace exposure, scaled up to a 1 inch diameter. Results showed that an equilibrium removal of 72% is achieved after a 3 hour contact time; supporting the research of Sun (2010) on the Freundlich Adsorption Isotherm linearization of solute adsorption to equilibrium solvent concentration.

scholarly journals Aplikasi Zeolit Alam Aktif Wonosari Sebagai Adsorben Zat Warna Remazol Yellow Fg

2021 ◽  
Vol 1 ◽  
pp. 80-87
Author(s):  
Neni Damajanti ◽  
Anwar Ma’ruf ◽  
Hanafi Khafid Nugraha
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Textile Industry ◽  
Contact Time ◽  
Langmuir Adsorption Isotherm ◽  
Isotherm Model ◽  
Isotherm Models ◽  
Activation Process ◽  
Langmuir Adsorption ◽  
Freundlich Adsorption Isotherm

Zeolite as an adsorbent has been widely used. Zeolite activation was carried out to increase the absorption. This study aimed to determine the characteristics of the active zeolite and apply it as an adsorbent. The activation process was carried out by adding acid and calcining at 4500C for 6 hours. Remazol Yellow FG is a dye that is widely used in the textile industry. In this study, the adsorption process was carried out on the Remazol Yellow FG solution, then analyzed the effect of changes in pH (5, 6, 7, 8, 9), contact time (30, 60, 90, 120, 150 minutes) and the concentration of Remazol Yellow FG solution ( 50, 100, 150, 200, 250 ppm) on the adsorption of Remazol Yellow FG dye. From the analysis of the sample solution of Remazol Yellow, the values of Ce and qe can be calculated. These values were then used to calculate KL and KF in the Langmuir adsorption isotherm and Freundlich adsorption isotherm models. From the experimental results, it could be seen that as the contact time increased, the adsorption capacity would be greater. However, when the zeolite was already in the saturated phase, the adsorption capacity would tend to decrease. In the Langmuir adsorption isotherm, the KL value was 0.0274 L/mg and in the Freundlich adsorption isotherm model, the KF value was 29.25 L/mg. Remazol Yellow FG adsorption tended to follow the Langmuir adsorption isotherm model with an R2 value of 0.998.

scholarly journals Adsorption Study for Trifluralin on Iraqi ? –Alumina

2012 ◽  
Vol 9 (1) ◽  
pp. 153-159 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Adsorption Isotherm ◽  
Aqueous Solutions ◽  
Contact Time ◽  
Adsorption Process ◽  
Kinetic Equations ◽  
Adsorption Study ◽  
Adsorption Capacities ◽  
Experimental Parameters ◽  
Freundlich Adsorption Isotherm ◽  
Equilibrium Adsorption Isotherm

Equilibrium adsorption isotherm for the removal of trifluralin from aqueous solutions using ? –alumina clay has been studied. The result shows that the isotherms were S3 according Giels classification. The effects of various experimental parameters such as contact time, adsorbent dosage, effect of pH and temperature of trifluralin on the adsorption capacities have been investigated. The adsorption isotherms were obtained by obeying freundlich adsorption isotherm with (R2 = 0.91249-0.8149). The thermodynamic parameters have been calculated by using the adsorption process at five different temperature, the values of ?H, ?G and ?S were (_1.0625) kj. mol-1, (7.628 - 7.831) kj.mol-1 and (_2.7966 - _2.9162) kg. k-1. mol-1 respectively. The kinetic study of adsorption process has been studied depending on three kinetic equations: 1- Allergen equation 2- Morris –weber eguation 3- Reichenberg eguation. In general, the result shows the isotherm were on ?- alumina according to Giels classification.? –alumina and thermodynamic

scholarly journals Treatment of Domestic Wastewater with Fixed Bed Biofilm Reactor

2018 ◽  
Vol 7 (4.35) ◽  
pp. 22
Author(s):  
Gasim Hayder ◽  
Puniyarasen Perumulselum ◽  
Hitham Alhussian
Keyword(s):  
Removal Efficiency ◽  
Fixed Bed ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Biofilm Reactor ◽  
Scale Model ◽  
Mixed Liquor Suspended Solid ◽  
Biofilm Reactors

Fixed bed biofilm reactors were evaluated with three different arrangements of bio-balls. The performance of different arrangements was evaluated based on chemical oxygen demand (COD), total suspended solid (TSS) and mixed liquor suspended solid (MLSS). The three rectors were fabricated and operated in lab scale model with real domestic wastewater. Considering the TSS removal efficiency, arrangement one was the best followed by arrangement two and arrangement three. While for COD, arrangement one recorded the highest removal efficiency followed by arrangement two and column. The average COD concentration for arrangement one was 23 while for arrangement two and arrangement three was 25 and 36 mg/l respectively. The overall average effluent TSS concentrations for the arrangement one, two and three were 25, 32 and 45 mg/l respectively. TSS and COD removal was almost the same for arrangement one and arrangement two but arrangement one has the highest among them, and all removal is acceptable under Malaysian standards. Besides that, all the three arrangements have the differences in terms of maintenance and installation. There was no clogging occurred in all the three arrangements.

scholarly journals Utilization of Banana (Musa sapientum) Peel for Removal of Pb2+ from Aqueous Solution

2021 ◽  
Vol 1 (2) ◽  
pp. 117-128
Author(s):  
Afrida Nurain ◽  
Protima Sarker ◽  
Md. Shiblur Rahaman ◽  
Md. Mostafizur Rahman ◽  
Md. Khabir Uddin
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Adsorption Isotherm ◽  
Contact Time ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Agitation Speed ◽  
Banana Peel ◽  
Management Problem ◽  
Freundlich Adsorption Isotherm

Biosorption is a convenient process for heavy metal remediation. In this study, banana peel was experimented to eliminate lead (Pb2+) from an aqueous solution following batch experiments. The functional groups of banana peel were identified by Fourier-transform infrared spectroscopy (FTIR). The adsorption mechanism was studied by the Langmuir and Freundlich adsorption isotherm model and determined the separation factor from the Langmuir adsorption isotherm. The adsorption of Pb2+ on dried banana peel had been studied at different adsorbent doses, pH, initial concentration of Pb, contact time, temperature, and agitation speed. After adsorption, Pb2+ was measured using atomic absorption spectroscopy (AAS). Maximum adsorption had taken place at pH 5 for adsorbent dose 45 g L-1. The optimum contact time and agitation speed was 30 minutes and 150 rpm, respectively for the initial Pb concentration of 100 ppm at 25°C. Both, Langmuir and Freundlich adsorption isotherm models shows the best fitting (r2 = 0.9978 and 0.9595) for Pb2+ adsorption. The maximum Pb2+ adsorption capacity was 2.1 mg g-1. The findings indicate that the banana peel waste could be a potential adsorbent for heavy metal removal. Moreover, the waste management problem could be solved in an eco-friendly manner by utilizing it for the eradication of Pb2+ from wastewater.

Controlled Zn1−xNixO nanostructures for an excellent humidity sensor and a plausible sensing mechanism

2018 ◽  
Vol 42 (11) ◽  
pp. 8445-8457 ◽  
Author(s):  
Alfa Sharma ◽  
Yogendra Kumar ◽  
Kushal Mazumder ◽  
Amit Kumar Rana ◽  
Parasharam M. Shirage
Keyword(s):  
Adsorption Isotherm ◽  
Humidity Sensor ◽  
Isotherm Model ◽  
Humidity Sensing ◽  
Sensing Mechanism ◽  
Freundlich Adsorption Isotherm

A Freundlich adsorption isotherm model confirms a plausible humidity sensing mechanism when using wet chemically prepared Zn1−xNixO nanostructures.

scholarly journals Removal of Malachite Green from Single and Multi-Dye Aqueous Solutions by Acid-Treated Sawdust

2019 ◽  
Vol 35 (4) ◽  
pp. 1384-1391
Author(s):  
Abdur-Rahim Adebisi ◽  
Giwa Khadijat Ayanpeju ◽  
Abdulsalam Francois Wewers ◽  
Mary Adelaide Oladipo
Keyword(s):  
Adsorption Isotherm ◽  
Aqueous Solutions ◽  
Malachite Green ◽  
Removal Efficiency ◽  
Contact Time ◽  
Adsorption Process ◽  
Parkia Biglobosa ◽  
Order Model ◽  
Experimental Conditions ◽  
Pseudo Second Order

The study investigates the effectiveness and mechanism of the adsorption of malachite green from single and mixed dyes aqueous solutions by an adsorbent prepared from acid-treated Parkia biglobosa sawdust. The adsorbent was characterized using different techniques, and the adsorption was conducted in single, binary, ternary and quaternary dye systems under different experimental conditions. Experimental results were subjected to different isotherm and kinetics models. The adsorption process was endothermic and thermodynamically feasible with the removal efficiency increasing with increase in adsorbent dosage, solution working pH, initial dye concentration and contact time. The rate of sorption of the dye was fast; it attained equilibrium within 180 minutes in both the single and mixed solute systems. Pseudo-second order model gives the best kinetics fit (R2 = 0.998). The adsorption isotherm in all solute systems have best fits for the Temkin model (R2 > 0.96).

Study on Arsenic Removal Efficiency and Mechanism of Titanium Modified Manganese Ore

2011 ◽  
Vol 356-360 ◽  
pp. 1061-1065
Author(s):  
Yong Bing Huang ◽  
Xiu Ying Liu ◽  
Li Li Wang ◽  
Xiao Juan Li ◽  
Shu Xin Tu
Keyword(s):  
Adsorption Isotherm ◽  
Removal Efficiency ◽  
Arsenic Removal ◽  
Low Cost ◽  
Manganese Ore ◽  
Langmuir Adsorption ◽  
Freundlich Adsorption Isotherm ◽  
Adsorption Quantity ◽  
Modification Condition ◽  
Dipping Time

Natural manganese ore is a kind of arsenic removal mineral. It is low-cost and widely available. In order to enhance its removal efficiency and adsorption quantity of arsenic, this paper adopted TiCl4 to modify natural manganese ore and optimized the conditions of modification. The results showed that the best modification condition was: TiCl4 at a concentration of 10 mg•L-1, dipping time of 18h, pH 3.05, reaction time of 60 min; under these conditions, the removal rates of As (Ⅲ) and As (Ⅴ) respectively reached 94.87% and 99.31%, much higher compared with natural manganese ore (82.95% and 77.93%). The saturated adsorption quantity of As (Ⅲ) and As (Ⅴ) reached 3.48 mg•g-1 and 3.27 mg•g-1, each increasing 1.25 mg•g-1 and 1.21 mg•g-1. The adsorption of As (Ⅲ) by modified manganese ore fits the Freundlich adsorption isotherm, while As (Ⅴ) fits the Langmuir adsorption isotherm best.

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