Adsorptive Removal of Phosphate From Wastewater Using Ethiopian Rift Pumice: Batch Experiment

Fetene, Yohannis; Addis, Taffere

doi:10.1177/1178622120969658

Cited by 14 publications

(2 citation statements)

References 111 publications

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“…These two reports were focused on stormwater. In addition, batch experiment conducted by Fetene and Addis (2020) reported that pumice removed 95% phosphate from secondary treatment of municipal wastewater. Çifçi and Meriç (2016) evaluated the application of pumice for treated wastewater and concluded that adsorption mechanisms play an important role for pollutant removal.…”

Section: Introductionmentioning

confidence: 99%

The use of pumice amended with sand media for domestic wastewater treatment in vertical flow constructed wetlands planted with lemongrass (Cymbopogon citratus)

Rozari

Krisnayanti

Refli

et al. 2021

Heliyon

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The performance efficiency in constructed wetlands (CWs) technology is primarily affected by the media material and the types of plants used. Recently, investigations into the usage of local materials and plants in CWs has increased. Pumice is a material which is potential used as a media. However, research on amendment of pumice with other media in CWs is still limited. Therefore, this study aims to evaluate the potential of pumice amended with sand media and planted with lemongrass (Cymbopogon citratus) in CWs to remove organic matter, suspended solids, nutrients, and coliform. The adsorbents were characterized using X-ray diffraction, FTIR and XRF followed by adsorption experiments for PO 4 -P. Furthermore, Six vertical flow (VF) mesocosms with a diameter of 10.2cm and 55cm depth were established over six months. The treatments were based on percentage of sand media amended with pumice and planted with lemongrass. Furthermore, the barren media were applied to investigate the effect of lemongrass. The loading rate of domestic wastewater into the VF mesocosms was 2 L/day while inflows and outflows were determined for nutrients, organic matter, suspended solids and coliform. The adsorption of PO 4 -P followed the Langmuir model with adsorption capacity was 0.089 and 0.067 mol/g for pumice and sand, respectively. The results also showed that the removal efficiency of TSS, COD, NO 3 -N, NO 2 -N, PO 4 -P and total coliforms were in the range of 93.7-97.3 %, 52-83 %, 63-86 %, 51-74%, 81-88 % and 92-97 %, respectively. Based on the results, the highest removal efficiency was observed in the sand media amended with 50 % pumice and planted with lemongrass, while the lowest was found in the barren sand media.

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Section: Introductionmentioning

confidence: 99%

The use of pumice amended with sand media for domestic wastewater treatment in vertical flow constructed wetlands planted with lemongrass (Cymbopogon citratus)

Rozari

Krisnayanti

Refli

et al. 2021

Heliyon

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“…(BK2). Fetene and Addis [16] have demonstrated the removal of phosphate from wastewater using Ethiopian rift pumice. A comprehensive study on phosphate removal from water using phragmites australis biochar loaded with aluminum, calcium, iron, lanthanum, and magnesium oxides was studied by Wang et al [17].…”

Section: Introductionmentioning

confidence: 99%

Determination and Removal of Phosphate and Nitrate from the Ground and Surface Water at the Three Counties of Guyana

Conway

Tewari

2021

CJAST

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Standard analytical procedures that are based on colourimetry facilitated the determination of PO43- and NO3- in the ground and surface waters from the three (3) counties of Guyana. Phosphates and nitrates beyond their permissible levels in natural waters can pose significant threats to the aquatic environment, its inhabitants, and the health of humans and terrestrial animals. For this reason, this study aims to investigate the use of metal (nickel, cadmium, cobalt) ferrocyanides (octahedral complexes that facilitate adsorption of anions primarily on its two divalent transitional metals) as adsorbents to facilitate the removal of the aforementioned anions. Results revealed that nickel ferrocyanide is the most effective adsorbent for treating ground and surface waters that contain high levels of PO43-, while it was also the most effective adsorbent for treating surface waters that contained NO3-. Fixed volumes of water samples were treated with 50 mg, 100 mg, and 150 mg of the adsorbent. The correlation coefficient computations revealed that they were instances of both positive and negative correlations, which implied that increasing adsorbent dosage resulted in increased adsorption and other instances decreased adsorption, respectively. This occurrence went against literature, possible reasons for this are explained in detail within the discussion portion of the manuscript. Adsorption isotherms and Langmuir plots were used to facilitate adsorption studies, in various instances, the generic appearance of these isotherms was not observed, possible reasons for this occurrence are also explained in more detail within the article. Based on observations within the article, the use of cobalt ferrocyanide for treating groundwater and removing PO43- is not recommended, while cadmium ferrocyanide is not recommended to be used to facilitate the removal of NO3-, due to the possible formation of Co3(PO4)2 and Cd(NO3)2, respectively, which consequently affected the results. Technologies like those studied in this research project should be explored and studied more in-depth (particularly with regards to the stability of the adsorbents) with regards to the treating of ground and surface water supplies, to facilitate the removal of PO43- and NO3-, since the results observed, though on a small scale, can be seen to move us closer towards a green and sustainable environment, inclusive of safeguarding the health of the Worlds’ people and expanding the scope of cost-effective and simple methods that aid in the removal of anions from natural waters.

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Parthenium hysterophorus-derived iron-coated biochar: a sustainable solution for nitrate and phosphate removal from water

islam,

Ahmad,

Shah

et al. 2024

Biomass Conv. Bioref.

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Water bodies face severe pollution from industrial operations and other human activities, endangering biotic life worldwide. Nitrate and phosphate contamination poses a significant challenge globally. This study focuses on developing an efficient adsorbent, derived from Parthenium hysterophorus (P. hysterophorus), for nitrate and phosphate removal from water. Biochar, termed P. hysterophorus stem biochar (SBC), was prepared at 650℃ and further coated with iron, creating iron-coated stem biochar (ICSBC), to enhance adsorption potential. SEM, TEM, EDX, and FTIR analyses characterized raw and coated biochars. Comparative adsorption studies revealed that P. hysterophorus ICSBC exhibited high adsorption capacity (nitrate = N = 77.17 mg/g, phosphate = P = 83.93 mg/g) and removal efficiency (nitrate = 88.19%, phosphate = 95.89%). Batch experiments explored the effects of contact time, adsorbent loading, pH, and initial concentration. Kinetic and equilibrium models demonstrated that the pseudo-second-order kinetic and Langmuir isotherm models best fit the data (R2 values: N = 0.9644, P = 0.98122, N = 93.68, P = 92.97, respectively). ICSBC’s favorable attributes, including strong adsorption, low cost, and eco-friendliness, position it as an ideal adsorbent for nitrate and phosphate removal from contaminated water. Graphical abstract

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Adsorptive Removal of Phosphate From Wastewater Using Ethiopian Rift Pumice: Batch Experiment

Cited by 14 publications

References 111 publications

The use of pumice amended with sand media for domestic wastewater treatment in vertical flow constructed wetlands planted with lemongrass (Cymbopogon citratus)

The use of pumice amended with sand media for domestic wastewater treatment in vertical flow constructed wetlands planted with lemongrass (Cymbopogon citratus)

Determination and Removal of Phosphate and Nitrate from the Ground and Surface Water at the Three Counties of Guyana

Parthenium hysterophorus-derived iron-coated biochar: a sustainable solution for nitrate and phosphate removal from water

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