Ammonium nitrogen removal from anaerobically digested effluent of swine wastewater using local sand

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
D. Zheng ◽  
L.W. Deng ◽  
N.N. Liu ◽  
H. Yang ◽  
Y. Liu
Keyword(s):  
Particle Size ◽  
Adsorption Capacity ◽  
Nitrogen Removal ◽  
Contact Time ◽  
Ammonium Nitrogen ◽  
Langmuir Equation ◽  
Swine Wastewater ◽  
Ammonium Concentration ◽  
High Adsorption ◽  
Removal Capacity

A type of sand selected in Sichuan, China was identified with high adsorption capacity to ammonium nitrogen. The effects of contact time, initial ammonium concentration and particle size on the sand for removing ammonium from digested effluent of swine wastewater were investigated using a static shaker experiment. Results showed that the optimum contact time for sand to adsorb ammonium was 150 min. As initial ammonium concentration increased, the removal capacity of the sand increased, but the removal efficiency decreased. The adsorbed ammonium increased as the particle size decreased. At ammonium concentrations ranging from 27 0 to 553 mg L-1, the maximum ammonium adsorption capacity of the sand was approximately 0 77 mg g-1 according to the Langmuir equation. Based on these findings, the use of this local sand as an adsorption media for ammonium nitrogen removal from digested effluent of swine wastewater is feasible.

scholarly journals STUDI ADSORPSI ZAT WARNA NAPHTHOL YELLOW S PADA LIMBAH CAIR MENGGUNAKAN KARBON AKTIF DARI AMPAS TEBU

Jurnal Kimia ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 104
Author(s):  
W. P. Utoo1 ◽  
E. Santoso ◽  
G. Yuhaneka ◽  
A. I. Triantini ◽  
M. R. Fatqi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Contact Time ◽  
Adsorption Process ◽  
Activation Process ◽  
Adsorption Model ◽  
High Adsorption ◽  
Prolonged Contact ◽  
Test Result

The aim of this research is to get activated carbon from sugarcane bagasse with high adsorption capacity to Naphthol Yellow S and to know factors influencing the adsorption capacity. Activated carbon is prepared by incomplete combustion of sugracane bagasse. The resulting carbon is activated with H2SO4 with concentration variation of 0.5; 1.0; 1.5 and 2.0 M and is continued by calcination at 400 °C. The measurement of the surface area of ??activated carbon by the methylene blue method indicates that the activation process successfully extends the surface area of carbon from 31.87 m2/g before activation to 66-72 m2/g after activation. Activated carbon with concentration of 2.0 M H2SO4 showed the highest surface area of ??71.85 m2/g, however, the best adsorption was shown by activated carbon with a concentration of 0.5 M H2SO4 with the adsorption capacity of 83.93%. The adsorption test showed that the best amount of adsorbent was 0.2 g with contact time for 30 minutes. Prolonged contact time can decrease the amount of Naphthol Yellow S adsorbed. The best adsorption test result was shown by sample with activator concentration of 0,5 M, mass of 0,2 g and contact time of 30 min with adsorption capacity 95,81% or amount of dye adsorbed equal to 143,72 mg/g. The adsorption study also showed that the entire Naphthol Yellow S adsorption process followed the Langmuir isothemal adsorption model. Qualitative testing of real batik waste indicates that activated carbon can reduce the dyes waste containing Naphthol Yellow Sexhibited by the color of batik waste which is more faded.  

Hydrogen Sulfide Separation from Biogas Using Laterite Soil Adsorbent

2020 ◽  
Vol 988 ◽  
pp. 144-150
Author(s):  
Sanggono Adisasmito ◽  
Carolus Borromeus Rasrendra ◽  
M. Qori Alfadhli ◽  
M. Fauzan Al Ghifary
Keyword(s):  
Particle Size ◽  
Adsorption Capacity ◽  
Room Temperature ◽  
Biogas Production ◽  
Separation Process ◽  
High Adsorption ◽  
Laterite Soil ◽  
Adsorption Column ◽  
Bed Height ◽  
High Adsorption Capacity

Biogas production contributes as an alternative renewable energy but its emissions contain sulphuric components which needs to be separated because it can cause damage to the environment. The method used in separation is adsorption with laterite soil because the price is cheap, easy to obtain, and can occur at room temperature. The purpose of this study is to determine the conditions of the adsorbent in the adsorption column which can provide a high adsorption capacity. The separation process is carried out by flowing biogas with a flow rate of 1.5 liters/minute to the adsorption column containing laterite soil. Reducing the particle size of the adsorbent from 6 mesh to 21 mesh will increase the adsorption capacity to 2.13 times, ie from 7.3 to 14.2 mg H2S/g adsorbent. The addition of bed height from 7 cm to 12 cm will increase the adsorption capacity from 6.7 to 7.9 mg H2­S/g adsorbent at 6 mesh particle size. The addition of bed height from 7 cm to 12 cm will increase the adsorption capacity from 13.5 to 15.0 mg H2S/g adsorbent at 21 mesh particle size. The laterite soil adsorbent with a particle size of 21 mesh has the highest adsorption capacity of 15.0 mg H2S/g adsorbent.

scholarly journals Removal of Fluoride Ion from Water Using locally Produced Adsorbent

2019 ◽  
Vol 4 (12) ◽  
pp. 78-85
Author(s):  
Aboiyaa A. Ekine ◽  
Patience N. Ikenyiri ◽  
O. Hezekiah-Braye
Keyword(s):  
Particle Size ◽  
Adsorption Capacity ◽  
Contact Time ◽  
Adsorption Process ◽  
Intraparticle Diffusion ◽  
Fluoride Ion ◽  
First Order ◽  
Egg Shells ◽  
Pseudo Second Order ◽  
Pseudo First Order

This Research investigated the adsorption capacity of locally prepared adsorbents from Egg shells for the removal of fluoride ion in well water. It evaluated the performance of these adsorbents calcinated at 3000C and modified with 1.0M HNO3 (trioxonitrate (v)) acid. Batch adsorber was used to allow for interaction between adsorbent (grounded Egg shells) with water containing fluoride ion. The batch experiment was performed with particle size of 2.12 contact time (60, 120, 180, 240, 300min), mass dosage (5g, 10g, 15g, 20g) and temperature (250C, 300C, 400C, 500C). The modified adsorbent was characterized to determine the physiochemical properties of grounded Egg shells (GE). Also the chemical composition of the modified adsorbent was analyzed to determine the percentage of calcium element required for the uptake of the fluoride ions in water for calcium as 39.68% for grounded Egg shells (GE). Percentage adsorption increased with increase in contact time, mass dosage and temperature for the adsorbent. The adsorption capacity was also determined which also increased with increase in contact time, temperature but decreased with increase in mass dosage at constant time of 60minutes. The pseudo first-order, pseudo second order and intraparticle diffusion kinetic models were fitted into the experimental results. The results obtained indicated that the pseudo first order and intraparticle diffusion models for the grounded Egg shells (GE) reasonably described the adsorption process very well whereas the pseudo second order model was not suitable for a calcinations temperature of 3000C and particle size of 2.12m. The adsorption isotherms were obtained from equilibrium experiment Performed at temperature of 25, 35, 45 and 550C. The result showed that Langmuir and Freundlich isotherm fitted perfectly the experimental data. However, the negative values of Gibb’s free energy indicated that adsorption was favourable and the positive enthalpy change H0 revealed that adsorption process was endothermic while the positive value of the entropy change signified increased randomness with adsorption.

Ammonium nitrogen removal from slurry-type swine wastewater by pretreatment using struvite crystallization for nitrogen control of anaerobic digestion

2004 ◽  
Vol 49 (5-6) ◽  
pp. 215-222 ◽  
Author(s):  
B.U. Kim ◽  
W.H. Lee ◽  
H.J. Lee ◽  
J.M. Rim
Keyword(s):  
Phosphoric Acid ◽  
Magnesium Oxide ◽  
Nitrogen Removal ◽  
High Capacity ◽  
Ammonium Nitrogen ◽  
Swine Wastewater ◽  
Molar Ratio ◽  
High Concentration ◽  
Nitrogen And Phosphorus ◽  
Struvite Crystallization

Precipitation of ammonium together with phosphate and magnesium is a possible alternative for lowering the nitrogen content of wastewater. In this study we examine the removal of ammonium nitrogen and phosphorus from slurry-type swine wastewater containing high concentrations of nutrients by the addition of phosphoric acid along with either calcium oxide or magnesium oxide, which leads to the crystallization of insoluble salts such as hydroxyapatite and struvite. The struvite crystallization method showed a high capacity for the removal of nitrogen when magnesium oxide and phosphoric acid were used as the magnesium and phosphate sources, respectively. When it was applied to swine wastewater containing a high concentration of nitrogen, the injection molar ratio of Mg2+:NH4+:PO43- that gave maximum ammonium nitrogen removal was 3.0:1.0:1.5.

scholarly journals Effect of limestone and dolomite tailings’ particle size on potentially toxic elements adsorption

2018 ◽  
Vol 10 (1) ◽  
pp. 726-739
Author(s):  
Sofia Farmaki ◽  
Eleni Vorrisi ◽  
Olga K. Karakasi ◽  
Angeliki Moutsatsou
Keyword(s):  
Particle Size ◽  
Taguchi Method ◽  
Adsorption Capacity ◽  
Contact Time ◽  
Toxic Elements ◽  
Fixed Bed ◽  
Solution Concentration ◽  
Potentially Toxic Elements ◽  
Batch Experiments ◽  
Rock Particle

Abstract The aim of the study is the investigation of potentially toxic elements adsorption on limestone, dolomite and marble particles of different size. As parameters, rock particle size, solution concentration, contact time and presence of other elements in the solution have been investigated. Four fractions with different particle size (−4mm + 1mm, −1mm + 315μm, −315μm + 90μm, <90μm) have been studied. Batch experiments have been carried out at 20, 60, 120 min from monoelement and competitive Cd, Cu, Pb, Zn solutions at concentrations 5, 100, 500 mg/L, whereas fixed bed conditions have also been applied. In lower concentrations, adsorption reaches equilibrium after 60 min. 15% difference in Pb adsorption and 15-30% in Zn adsorption has been observed depending on particle size. However, according to Taguchi method particle size has not proven a determinative parameter, so as to make grinding and/or sieving necessary for their further utilisation. Cd and Zn adsorption from a competitive solution is lower, whereas Cu and Pb adsorption is similar. Adsorption capacity of materials rises up to 0.03 mg Cd/g, 0.60 mg Cu/g, 0.03 mg Pb/g, 0.60 mg Zn/g. In fixed bed conditions more than 93% element is adsorbed, of which only 4% is leached.

Lead Retention on an Active Carbon Prepared from Date Kernels (Daglet Nour)

2018 ◽  
Vol 39 ◽  
pp. 139-146
Author(s):  
Nora Seghairi ◽  
Fateh Barbari ◽  
Karim Mihoub
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Lead Concentration ◽  
Activated Carbons ◽  
High Adsorption ◽  
Batch Tests ◽  
Treatment Processes ◽  
Increase With Increase ◽  
Long Time ◽  
High Adsorption Capacity

Metals occur naturally in rocks, water, air and soil and are also produced by human activities, including industrial and mining activities. For the most part, these heavy metals are hardly biodegradable, they are recognized, toxic or harmful to humans and animals. The use of activated carbon has remained for a long time and to this day the most effective adsorbent due to its high adsorption capacity mainly associated to its large specific surface. But this process is very expensive.This has therefore encouraged research by orienting them towards treatment processes using less costly and widely available natural materials. The objective of our study was to develop a simple, efficient and environmentally friendly sorption depollution technique on available and inexpensive media. We have studied the adsorption of lead on activated carbons prepared from date kernels. Batch tests were carried out with synthetic lead solution in order to study different operating parameters such as the effect of contact time, pH, initial lead concentration and adsorbent dosage. The results obtained showed that the adsorption capacity of the lead ions increase with increase in time until a saturation plateau was reached. The equilibrium was reached after a time close to 120 min and a plateau was observed from 120 to 180 min. The adsorption of lead on this adsorbent obeys the laws of Freundlich and Langmuir with a maximum capacity of 16.613 mg / g. Finally, we think that the results obtained during this study at the laboratory scale, confirm the interest practical and economical use of these two materials in the field of water treatment.

Ammonium nitrogen removal from wastewater with a three-dimensional electrochemical oxidation system

2013 ◽  
Vol 68 (3) ◽  
pp. 552-559 ◽  
Author(s):  
Jing Ding ◽  
Qing-Liang Zhao ◽  
Liang-Liang Wei ◽  
Yang Chen ◽  
Xin Shu
Keyword(s):  
Electrochemical Oxidation ◽  
Nitrogen Removal ◽  
Current Density ◽  
Anode Materials ◽  
Three Dimensional ◽  
Ammonium Nitrogen ◽  
Ammonium Concentration ◽  
Dimensional System ◽  
Real Wastewater ◽  
Three Dimensional System

Ammonium-containing wastewater could cause the promotion of eutrophication and a hindrance to the disinfection of water supplies. In this study, the feasibility of removing low-concentration ammonium nitrogen from synthetic and real wastewater by electrochemical oxidation was investigated. Using laboratory-scale electrochemical systems, the effects of chloride concentration, current density, anode materials, cathode materials, electrode gap, initial ammonium concentration and three-dimensional particles on the removal of ammonium nitrogen and current efficiency (CE) were evaluated. Ammonium nitrogen removal was mainly dependent upon anode materials and current density. The performance of two- and three-dimensional electrochemical oxidation systems was comparatively discussed. Both particle electrodes could enhance ammonium nitrogen removal and increase CE. However, the mechanism of the process seemed to be different. Moreover, the interaction of zeolites adsorption and electrochemical oxidation on the anode in a three-dimensional system could favor the regeneration of zeolites. Surface morphology of the used Ru-Ir-Sn/Ti anode revealed its longer working life of electrocatalysis. The result of ammonium degradation for a real wastewater treatment plant effluent showed the degradation rates in a three-dimensional system increased by 1.4 times those in a two-dimensional system.

scholarly journals Effect of Aluminium Powder on Kaolin-Based Geopolymer Characteristic and Removal of Cu2+

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 814
Author(s):  
Nurliyana Ariffin ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Przemysław Postawa ◽  
Shayfull Zamree Abd Rahim ◽  
Mohd Remy Rozainy Mohd Arif Zainol ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Maximum Adsorption Capacity ◽  
X Ray Diffraction ◽  
Aluminium Powder ◽  
Removal Capacity ◽  
Properties And Characterization ◽  
Powder Content

This current work focuses on the synthesis of geopolymer-based adsorbent which uses kaolin as a source material, mixed with alkali solution consisting of 10 M NaOH and Na2SiO3 as well as aluminium powder as a foaming agent. The experimental range for the aluminium powder was between 0.6, 0.8, 1.0 and 1.2wt%. The structure, properties and characterization of the geopolymer were examined using X-Ray Diffraction (XRD), Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Adsorption capacity and porosity were analysed based on various percentages of aluminium powder added. The results indicate that the use of aluminium powder exhibited a better pore size distribution and higher porosity, suggesting a better heavy metal removal. The maximum adsorption capacity of Cu2+ approached approximately 98%. The findings indicate that 0.8% aluminium powder was the optimal aluminium powder content for geopolymer adsorbent. The removal efficiency was affected by pH, adsorbent dosage and contact time. The optimum removal capacity of Cu2+ was obtained at pH 6 with 1.5 g geopolymer adsorbent and 4 h contact time. Therefore, it can be concluded that the increase in porosity increases the adsorption of Cu2+.

scholarly journals A comparative study on Co(II) removal capacity from water samples by sorption using limestone and nanolimestone

2019 ◽  
Vol 9 (4) ◽  
pp. 339-349 ◽  
Author(s):  
Ahmed H. Elmorsy ◽  
Mohamed EL-Toony ◽  
Enas Al-Johani ◽  
Shamha Ghurzan
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Process ◽  
Entropy Change ◽  
Langmuir Equation ◽  
Enthalpy Change ◽  
Contaminated Water ◽  
Batch Experiments ◽  
First Order ◽  
Removal Capacity ◽  
Order Rate Equation

AbstractPowdered nanolimestone (NLS) and limestone (LS) have been investigated as an adsorbent for the removal of cobalt from aqueous solutions. Batch experiments were carried out to investigate the effect of pH. The favorable pH for maximum cobalt adsorption was 6.8. The surface area increased in the case of NLS up to 6.2 m2/g, while it was equal to 0.5 m2/g in the case of LS. The adsorption capacity calculated by the Langmuir equation was 17.1 mg/g for LS and 60.0 mg/g for NLS at pH 6.8. The adsorption capacity increased with temperature and the kinetics followed a first-order rate equation. The enthalpy change (ΔHo) was 20.8 Jmol−1 for LS and 41.6 Jmol−1 for NLS, while entropy change (ΔSo) was 33.3 JK−1 mol−1 for LS and 74.8 JK−1 mol−1 for NLS, which substantiates the endothermic and spontaneous nature of the cobalt adsorption process. All of the results suggested that the NLS is very strong and could be an excellent nano-adsorbent for cobalt contaminated water treatment more than limestone.

scholarly journals High Performance Mixed-Matrix Electrospun Membranes for Ammonium Removal from Wastewaters

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 440
Author(s):  
Shu-Ting Chen ◽  
Sumith Ranil Wickramasinghe ◽  
Xianghong Qian
Keyword(s):  
High Performance ◽  
Zeolite Y ◽  
Ammonium Nitrogen ◽  
Mixed Matrix Membranes ◽  
Ammonium Concentration ◽  
Mixed Matrix ◽  
Ammonium Removal ◽  
Zeolite 13X ◽  
Removal Capacity ◽  
Electrospun Membranes

Mixed-matrix electrospun membranes were developed to investigate ammonium removal from low ammonium concentration wastewaters for the first time. Particles derived from the inexpensive zeolite 13X were successfully incorporated into polyethersulfone (PES) matrices. The fabricated mixed-matrix electrospun membranes demonstrate high ammonium removal capacity reaching over 55 mg/gzeolite, more than 2.5 times higher than the previously fabricated mixed-matrix membranes via non-solvent induced phase inversion. Moreover, the membranes fabricated exhibit high permeability and ease of regeneration. Over 90% of total ammonium nitrogen (TAN) can be removed from low TAN wastewaters such as aquaculture wastewaters. In addition to zeolite 13X, other zeolite particles including zeolite Y, zeolite 3A and 4A were also incorporated into the membrane matrix. The inexpensive zeolite 13X show the highest ammonium exchange capacity. Particle type, loading and the level of its dispersion all affect TAN removal capacity.

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