Lampiran 5A paper Removal of nitrate, ammonia and phosphate from aqueous solutions in packed bed filterusing biochar augmented sand media

Mapping Intimacies ◽

10.31219/osf.io/dy4fk ◽

2021 ◽

Author(s):

Philiphi de Rozari

Keyword(s):

Aqueous Solutions ◽

Nitrate Removal ◽

Packed Bed ◽

Packed Columns ◽

Synthetic Wastewater ◽

Nutrient Concentrations ◽

Ammonium Removal ◽

Regulatory Limits ◽

Maximum Allowable Concentrations ◽

Study Laboratory

Nutrients from wastewater are a major source of pollution because they can cause significant impact on the ecosystem. Accordingly, it is important that the nutrient concentrations are kept to admissible levels to the receiving environment. Often regulatory limits are set on the maximum allowable concentrations in the effluent. Therefore, wastewater must be treated to meet safe levels of discharge. In this study, laboratory investigation of the efficiency of packed bed filters to remove nitrate, ammonium and phosphate from aqueous solutions were conducted. Sand and sand augmented with hydrochloric acid treated biochar (SBC) were used as packing media. Synthetic wastewater solution was prepared with PO43-, NO3-, NH4+ concentrations 20, 10, 50 mg/L, respectively. Each experiment ran for a period of five days; samples from the effluent were collected on alternate days. All experiments were duplicated. Over the experiment period, the average removal efficiency of PO43-, NO3-, NH4+ were 99.2%, 72.9%, 96.7% in the sand packed columns and 99.2%, 82.3%, 97.4% in the SBC packed columns, respectively. Although, the presence of biochar in the packing media had little effect on phosphate and ammonium removal, it significantly improved nitrate removal

Download Full-text

Removal of ammonium from aqueous solutions using the residue obtained from struvite pyrogenation

Water Science & Technology ◽

10.2166/wst.2011.811 ◽

2011 ◽

Vol 64 (12) ◽

pp. 2508-2514 ◽

Cited By ~ 6

Author(s):

Haiming Huang ◽

Qianwu Song ◽

Chunlian Xu

Keyword(s):

Aqueous Solutions ◽

Experimental Results ◽

Synthetic Wastewater ◽

Ammonium Concentration ◽

Ammonium Removal ◽

Optimum Ph ◽

Series Of Experiments ◽

Release Ratio ◽

Phosphate Source ◽

The Cost

This paper reports the results of laboratory studies on the removal of ammonium from aqueous solutions using struvite pyrogenation residues. A series of experiments were conducted to examine the effects of the pyrogenation temperature (90–210 °C) and time (0.5–4 h) on the ammonium release of struvite. In addition, the pyrolysate of struvite produced at different pyrogenation temperatures and times was recycled for ammonium removal from aqueous solutions. The experimental results indicated that the ammonium release ratio of struvite increased with an increase in the pyrogenation temperature and time, and the struvite pyrolysate used as magnesium and phosphate source for ammonium removal was produced at the optimal condition of pyrogenation temperature of 150 °C for 1 h. Furthermore, experimental results showed that the optimum pH and pyrolysate dosage for ammonium removal from 100 ml synthetic wastewater (1,350 mg ammonium/L) were at pH 9 and 2.4 g of struvite pyrolysate, respectively, and initial ammonium concentration played a significant role in the ammonium removal by the struvite pyrolysate. In order to further reduce the cost of struvite precipitation, the struvite pyrolysate was repeatedly used for four cycles. The results of economic analysis showed that recycling struvite for three process cycles should be reasonable for ammonium removal, with ammonium removal efficiencies of over 50% and a reduction of 40% in the removal cost per kg NH4+.

Download Full-text

INTEGRATING NANOSCALE ZERO-VALENT IRON AND TITANIUM DIOXIDE FOR NUTRIENT REMOVAL IN STORMWATER SYSTEMS

NANO ◽

10.1142/s1793292008001295 ◽

2008 ◽

Vol 03 (04) ◽

pp. 297-300 ◽

Cited By ~ 3

Author(s):

NI-BIN CHANG ◽

MARTY WANIELISTA ◽

FAHIM HOSSAIN ◽

LEI ZHAI ◽

KUEN-SONG LIN

Keyword(s):

Titanium Dioxide ◽

Water Reuse ◽

Algal Blooms ◽

Chemical Reduction ◽

Nitrate Removal ◽

Packed Bed ◽

The United States ◽

Zero Valent Iron ◽

Nanoscale Zero Valent Iron ◽

Freshwater Bodies

Nutrients, such as nitrate, nitrite, and phosphorus, are common contaminants in many aquatic systems in the United States. Ammonia and nitrate are both regulated by the drinking water standards in the US primarily because excess levels of nitrate might cause methemoglobinemia. Phosphorus might become sources of the eutrophication problems associated with toxic algae in the freshwater bodies. Toxic algal blooms can cause severe acute and chronic public health problems. Chemical reduction of nitrate by using zero-valent iron started as early as 1964, and considerable research reports relating to this technology to nanomaterial were extensively reported in 1990s making the use of nanoscale zero-valent iron (NZVI) particles for nitrate removal become one of the most popular technologies in this field. The purpose of the present study was to examine the potential of integrating green sorption media, such as sawdust, limestone, tire crumb, and sand/silt, with two types of nanoparticles, including NZVI and Titanium Dioxide ( TiO 2), for nitrate removal in an engineering process. The study consists of running packed bed column tests followed by the addition of NZVI and TiO 2 to improve nitrate and phosphorus removal efficiency. Preliminary results in this paper show that the potential and advanced study may support the creation of design criteria of stormwater and groundwater treatment systems for water reuse in the future.

Download Full-text

Nitrate removal from aqueous solutions by cross-linked chitosan beads conditioned with sodium bisulfate

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2008.11.045 ◽

2009 ◽

Vol 166 (1) ◽

pp. 508-513 ◽

Cited By ~ 124

Author(s):

Sudipta Chatterjee ◽

Dae S. Lee ◽

Min W. Lee ◽

Seung H. Woo

Keyword(s):

Aqueous Solutions ◽

Nitrate Removal ◽

Chitosan Beads ◽

Sodium Bisulfate

Download Full-text

Ammonium removal from high-strength aqueous solutions by Australian zeolite

Journal of Environmental Science and Health Part A ◽

10.1080/10934529.2016.1159861 ◽

2016 ◽

pp. 1-12 ◽

Cited By ~ 5

Author(s):

D. Thushari N. Wijesinghe ◽

Kithsiri B. Dassanayake ◽

Sven G. Sommer ◽

Guttila Y. Jayasinghe ◽

Peter J. Scales ◽

...

Keyword(s):

Aqueous Solutions ◽

High Strength ◽

Ammonium Removal

Download Full-text

Effective removal of Pb(ii) from synthetic wastewater using Ti3C2Tx MXene

Environmental Science Water Research & Technology ◽

10.1039/c9ew00625g ◽

2020 ◽

Vol 6 (1) ◽

pp. 173-180 ◽

Cited By ~ 9

Author(s):

Byung-Moon Jun ◽

Namguk Her ◽

Chang Min Park ◽

Yeomin Yoon

Keyword(s):

Heavy Metals ◽

Aqueous Solutions ◽

Synthetic Wastewater ◽

Performance Tests ◽

Effective Removal

MXene (Ti3C2Tx) was used to remove heavy metals from aqueous solutions; we focused principally on Pb(ii) adsorption by MXene using several performance tests and various forms of characterization.

Download Full-text

Selective Ammonium Removal from Synthetic Wastewater by Flow-Electrode Capacitive Deionization Using a Novel K2Ti2O5-Activated Carbon Mixture Electrode

Environmental Science & Technology ◽

10.1021/acs.est.0c04383 ◽

2020 ◽

Vol 54 (19) ◽

pp. 12723-12731

Author(s):

Lin Lin ◽

Jiahui Hu ◽

Jiahua Liu ◽

Xin He ◽

Bing Li ◽

...

Keyword(s):

Activated Carbon ◽

Synthetic Wastewater ◽

Capacitive Deionization ◽

Ammonium Removal

Download Full-text

Fermentative hydrogen production in packed-bed and packing-free upflow reactors

Water Science & Technology ◽

10.2166/wst.2006.712 ◽

2006 ◽

Vol 54 (9) ◽

pp. 95-103 ◽

Cited By ~ 19

Author(s):

C. Li ◽

T. Zhang ◽

H.H.P. Fang

Keyword(s):

Hydrogen Production ◽

Granular Sludge ◽

Packed Bed ◽

Synthetic Wastewater ◽

Extracellular Polysaccharides ◽

Hydrogen Yield ◽

Bacterial Cells ◽

Fermentative Hydrogen Production ◽

Packing Rings ◽

Fermentative Hydrogen

Fermentative hydrogen production from a synthetic wastewater containing 10 g/L of sucrose was studied in two upflow reactors at 26°C for 400 days. One reactor was filled with packing rings (RP) and the other was packing free (RF). The effect of hydraulic retention time (HRT) from 2 h to 24 h was investigated. Results showed that, under steady state, the hydrogen production rate significantly increased from 0.63 L/L/d to 5.35 L/L/d in the RF when HRT decreased from 24 h to 2 h; the corresponding rates were 0.56 L/L/d to 6.17 L/L/d for the RP. In the RF, the hydrogen yield increased from 0.96 mol/mol-sucrose at 24 h of HRT to the maximum of 1.10 mol/mol-sucrose at 8 h of HRT, and then decreased to 0.68 mol/mol-sucrose at 2 h. In the RP, the yield increased from 0.86 mol/mol-sucrose at 24 h of HRT to the maximum of 1.22 mol/mol-sucrose at 14 h of HRT, and then decreased to 0.78 mol/mol-sucrose at 2 h. Overall, the reactor with packing was more effective than the one free of packing. In both reactors, sludge agglutinated into granules. The microbial community of granular sludge in RP was investigated using 16S rDNA based techniques. The distribution of bacterial cells and extracellular polysaccharides in hydrogen-producing granules was investigated by fluorescence-based techniques. Results indicated that most of the N-acetyl-galactosamine/galactose-containing extracellular polysaccharides were distributed on the outer layer of the granules with a filamentous structure.

Download Full-text