scholarly journals Phosphorus Recovery System from Desorbing and Regenerating Solution Used to Regenerate Phosphorus Adsorption Capacity of Hydrotalcite

2007 ◽  
Vol 30 (4) ◽  
pp. 191-196 ◽  
Author(s):  
Hisamitsu OSHIMA ◽  
Tomoyuki KUWABARA ◽  
Toshio SATO ◽  
Ariumi KAWAMOTO
2019 ◽  
Vol 65 (9) ◽  
pp. 1262-1272 ◽  
Author(s):  
Luciano Colpo Gatiboni ◽  
Djalma Eugênio Schmitt ◽  
Paulo Cezar Cassol ◽  
Jucinei José Comin ◽  
Joice Crescêncio Heidemann ◽  
...  

2015 ◽  
Vol 7 (3) ◽  
pp. 167-175 ◽  
Author(s):  
M. Seafatullah ◽  
M. A Hoque ◽  
M. S. Islam ◽  
M. M. Islam ◽  
M. N. Islam

One of the approaches for phosphorus fertilizer management is controlling the soil phosphorus adsorption behavior. To examine the effect on phosphorus adsorption behavior, three amended soil samples were prepared by mixing 10% (w/w in dry basis) cow dung, biogas slurry and vermicompost with soil. Phosphorus adsorption behavior was examined by using Langmuir, and Temkin adsorption isotherms. Initially, biogas slurry and vermicompost increased the maximum phosphorus adsorption capacity (MPAC) of soil from 461 µg g-1 (control) to 558.0357 and 586.17 µg g-1 respectively, and then decreased steadily and reached 429.92 and 398.41 µg g-1 respectively in five weeks.  Whereas in case of cow dung, MPAC was initially decreased, then reached maximum in 17 days and ultimately decreased. Thus application of cow dung along with phosphate fertilizer seems to increase the loss of the fertilizer through runoff and leaching. Conversely, biogas slurry and vermicompost prevent phosphorus loss by regulating phosphorus release through initial enhancement followed by gradual decrease in phosphorus adsorption capacity of soil. Both biogas slurry and vermicompost can be considered as good soil amendments as they have the ability to control the release of phosphorus fertilizer as per the need of the plants.


2015 ◽  
Vol 46 (20) ◽  
pp. 2615-2627 ◽  
Author(s):  
Rafael Silva Guedes ◽  
Antonio Rodrigues Fernandes ◽  
Edna Santos de Souza ◽  
João Roberto Rosa e Silva

2016 ◽  
Vol 34 (4-5) ◽  
pp. 320-330 ◽  
Author(s):  
Rekha A Adhikari ◽  
KC Bal Krishna ◽  
Ranjan Sarukkalige

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1815
Author(s):  
Jinghui Wu ◽  
Xiangyu Li ◽  
Zhian Ying ◽  
Chi Wang ◽  
Wu Yang ◽  
...  

In order to enhance the using efficiency of the adsorbent and decrease production costs, reclaimed saturation Lanthanum modified pine needles (LH pine needles) have been studied as a possible solution. Pine needles gathered from the woods of Northeast China area were used as raw material for generating LH pine needles by alkali-isopropanol treatment and chemical precipitation. To explore the utilization of LH pine needles as a recycling adsorbent in wastewater treatment plants (WWTPs) and laboratory water distribution. Results show that removal effective of phosphorus (P) by LH pine needles in low concentration reclaimed water of WWTPs was 41% and up to more than 92% in its adding standard. In the wide pH range, LH pine has an effective adsorption capacity for phosphorus; pH can also interfere with the adsorption capacity of LH pine as there is a negative correlation between them. The adsorption of phosphorus by LH pine needles is divided into three stages with a pH ranging from 3~11. Ligand exchange reaction, electrostatic reaction and Lewis acid reaction are PO43− adsorption mechanism. The analysis of the recycling efficiency of LH pine needles proved that LH pine needles have good regeneration performance. After being eluted by NaOH regeneration agent for more than 10 times, the adsorption efficiency of phosphorus can still be stable at over 90% in seven cycles.


2021 ◽  
Vol 120 ◽  
pp. 41-49
Author(s):  
Xiaolong Yu ◽  
Yousuke Nakamura ◽  
Masanari Otsuka ◽  
Daisuke Omori ◽  
Shinsuke Haruta

2019 ◽  
Vol 36 (02) ◽  
pp. 161-170
Author(s):  
Ye Duk Choi ◽  
Jun Yeon Lee ◽  
Zoo Ho Jang ◽  
Jung Gone Joung ◽  
Kyu Mun Han ◽  
...  

2006 ◽  
Vol 54 (5) ◽  
pp. 207-213 ◽  
Author(s):  
Y. Yang ◽  
D. Tomlinson ◽  
S. Kennedy ◽  
Y.Q . Zhao

Alum sludge refers to the by-product from the processing of drinking water in water treatment works. In this study, groups of batch experiments were designed to identify the characteristics of dewatered alum sludge for phosphorus adsorption. Air-dried alum sludge (moisture content 10.2%), which was collected from a water treatment works in Dublin, was subjected to artificial P-rich wastewater adsorption tests using KH2PO4 as a model P source. Adsorption behaviours were investigated as a function of amount and particle size of alum sludge, pH of solution and adsorption time. The results have shown that pH plays a major role not only in the adsorption process but also in the adsorption capacity. With regard to adsorption capacity, this study reveals the Langmuir adsorption isotherm being the best fit with experimental data (R2=0.98–0.99). The maximum adsorption capacities range from 0.7 to 3.5 mg-P/g when the pH of the synthetic P solution was varied from 9.0 to 4.3, accordingly. The outcome of this study indicated that alum sludge is suitable for use as an adsorbent for removal of phosphate from wastewater.


2009 ◽  
Vol 7 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Takashi KONDO ◽  
Satoshi TSUNEDA ◽  
Yoshitaka EBIE ◽  
Yuhei INAMORI ◽  
Kaiqin XU

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