Efficient removal of phosphorus by adsorption

Fan, Xiaoyi; Wu, Yuting; He, Yao; Liu, Huaping; Guo, Jing; Li, Bing; Peng, Hao

doi:10.1080/10426507.2022.2157828

Cited by 7 publications

(4 citation statements)

References 106 publications

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“…On this other side, adsorption is an easy handling process, showing high selectivity for the removal of phosphorus and can be applied in the aqueous phase streams; usually a proper pretreatment step for the enhanced separation of suspended solids is required. This method is also highly dependent on the applied sorbent material's capacity for capturing phosphorus [24,43].…”

Section: Discussionmentioning

confidence: 99%

Post-Removal of Phosphorus from Biologically Treated Wastewater and Recovering It as Fertilizer. A Pilot-Scale Attempt—The Project PhoReSe

Kalaitzidou,

Mitrakas,

Zouboulis

2024

Preprint

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The major issue of raw materials depletion and more specifically of phosphorous (an important fertilizer) has currently become an emergent aspect, due to expected depletion problems, needing immediate handling. This was the reason for the implementation of PhoReSe project that aimed to remove and recover phosphorus from the secondary (biologically treated) effluent of a municipal wastewater treatment plant (WWTP “AINEIA”, located near Thessaloniki, N. Greece), treating the wastewaters of the nearby touristic area. Regarding the phosphorous supplementary removal and recovery treatment options, two methods mainly examined, initially in laboratory scale (batch experiments), i.e. (1) the adsorption of phosphorous, and (2) the chemical precipitation of phosphorus. Both methods further applied in pilot-scale, by performing initially the adsorption of phosphorous onto the AquAsZero commercial sorbent, which is a mixed manganese iron oxy-hydroxide, followed by the chemical precipitation of phosphorous, implemented after the de-sorption process of previously saturated adsorbent. The final precipitate of this procedure examined as an alternative/supplementary fertilizer, returning with this way phosphorus into the natural cycle. These experiments, as applied successfully in pilot-scale, set the basis for the larger-scale relevant application for similar WWTP facilities.

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Section: Discussionmentioning

confidence: 99%

Post-Removal of Phosphorus from Biologically Treated Wastewater and Recovering It as Fertilizer. A Pilot-Scale Attempt—The Project PhoReSe

Kalaitzidou,

Mitrakas,

Zouboulis

2024

Preprint

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“…In life, industrial and agricultural wastewater carries phosphorus and flows into lakes, rivers, and other water bodies [ 56 ]. Excessive phosphorus released into water bodies will lead to algae growth, eutrophication, water quality decline, and other severe environmental problems [ 57 ], which is a significant motivation for phosphorus recovery. Some researchers used coffee powder as a raw material, and Fe 12 LaO 19 @BC was obtained by coprecipitation of iron and lanthanum, mainly forming lanthanum phosphate and iron phosphate to adsorb phosphorus [ 58 ].…”

Section: Study On the Adsorption Of Nitrogen And Phosphorus By Biocharmentioning

confidence: 99%

Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar

Wu,

Quan,

Chen

et al. 2024

Molecules

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Nitrogen and phosphorus play essential roles in ecosystems and organisms. However, with the development of industry and agriculture in recent years, excessive N and P have flowed into water bodies, leading to eutrophication, algal proliferation, and red tides, which are harmful to aquatic organisms. Biochar has a high specific surface area, abundant functional groups, and porous structure, which can effectively adsorb nitrogen and phosphorus in water, thus reducing environmental pollution, achieving the reusability of elements. This article provides an overview of the preparation of biochar, modification methods of biochar, advancements in the adsorption of nitrogen and phosphorus by biochar, factors influencing the adsorption of nitrogen and phosphorus in water by biochar, as well as reusability and adsorption mechanisms. Furthermore, the difficulties encountered and future research directions regarding the adsorption of nitrogen and phosphorus by biochar were proposed, providing references for the future application of biochar in nitrogen and phosphorus adsorption.

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“…The pH level not only influences the surface charge of metal oxide composites but also dictates the form of phosphorus in an aqueous solution.Phosphorus in water primarily exists in four main forms:H 3 PO (Fan et al, 2022).Under acidic conditions,excess hydrogen ions can protonate the active adsorption sites,causing the biochar to behave as a weak acid,functioning as an electron acceptor,while the phosphate ion acts as a weak base.Conversely,under alkaline conditions,excess hydroxide groups deprotonate the active adsorption sites on the biochar's surface,making the biochar act as a weak base,and the phosphate ion behaves as a weak acid.Liang et al (Liang et al, 2023) developed an in-situ activation method based on the pyrolysis technique of Mg(NO 3 ) 2 activation,resulting in Mg-biochar adsorbents with abundant fine pores and active sites.The results indicated that the adsorption of Mg (NO 3 ) 2 on biochar was highly dependent on the initial pH of the solution.The maximum adsorption of phosphate nearly doubled as the pH increased from 3 to 9,but significantly decreased when the pH was raised to 13.…”

Section: Solution Phmentioning

confidence: 99%

A review：Modified biochar as an adsorbent for phosphorus removal from water

Tian,

Huang,

Zhang

et al. 2024

int.jour.sci.res.mana

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In recent years,eutrophication of water bodies has become increasingly severe due to the rising content of phosphorus in these bodies.This escalation adversely affects the normal growth of aquatic organisms,leading to the deterioration of water quality,and ultimately impacting human life.Phosphorus removal is a crucial direction for addressing water body pollution.Therefore,it is of utmost importance to identify efficient,affordable,and feasible methods for removing phosphorus from wastewater.Adsorption,owing to its simplicity,efficiency,and low cost,is widely employed in water treatment.Biochar,in particular,is extensively used due to its high efficiency,renewability,low cost,and the ready availability of raw materials.This paper reviews the preparation methods of biochar and modified biochar,analyses the effects of pyrolysis temperature,solution pH,reaction temperature,adsorbent dosage,adsorption time and co-existing ions on the phosphorus removal of biochar materials.It also explores the necessity of desorption and regeneration of biochar,along with the prospects of biochar in the future of phosphorus removal.

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Efficient removal of phosphorus by adsorption

Cited by 7 publications

References 106 publications

Post-Removal of Phosphorus from Biologically Treated Wastewater and Recovering It as Fertilizer. A Pilot-Scale Attempt—The Project PhoReSe

Post-Removal of Phosphorus from Biologically Treated Wastewater and Recovering It as Fertilizer. A Pilot-Scale Attempt—The Project PhoReSe

Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar

A review：Modified biochar as an adsorbent for phosphorus removal from water

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