Phosphate removal from municipal wastewater by alginate-like exopolymers hydrogels recovered from aerobic granular sludge

Schambeck, Cássio Moraes; Costa, Rejane Helena Ribeiro da; Derlon, Nicolas

doi:10.1016/j.biortech.2021.125167

Cited by 18 publications

(2 citation statements)

References 47 publications

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“…However, the addition of alginate to the ALE beads resulted in an adsorbent with better integrity, refuting the hypothesis of calcium leakage to the aqueous solution which would in phosphate precipitation. Also, the possible effect of competing ions in phosphorus adsorption was presented in a study performed by Schambeck Da Costa and Derlon (2021). The authors found that ALE hydrogels presented selectivity for phosphate even in the presence of NH 4 , Cl -, Na + , Ca 2+ and Mg 2+ .…”

Section: Evaluation Of Equilibrium Time and Adsorption Kineticsmentioning

confidence: 99%

Biopolymers recovery from biological sludge and its use as phosphorus biosorbent

Cabral,

Gommersbach,

Cavali

et al. 2024

Eng. Sanit. Ambient.

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Biopolymers can be recovered from aerobic sludge and used for environmental applications, such as phosphorus adsorbent material, instead being sent to sanitary landfills. In this resource recovery perspective, this work aimed to study the recovery of alginate-like exopolymer (ALE) from activated sludge (AS) compared to aerobic granular sludge (AGS). ALE-based biosorbent was prepared and tested to remove phosphorus from aqueous solutions, and the adsorption kinetics and isotherm models were studied. The recovery yield of ALE from a full-scale wastewater treatment plant (WWTP) AS (18.7%) was close to that obtained from a pilot-scale AGS (22%). ALE recovered from AS presented hydrogel properties and humic substances in its composition, which are important features for future applications. The equilibrium of the adsorption was reached after 10 minutes. The Langmuir isotherm model and the PFO kinetic model best fitted to the experimental data, resulting in maximum adsorption capacity of 8.164 mgP·gALE. Thus, ALE recovered from AS has the potential to be used as a phosphorus biosorbent from effluents and further used as a nutrient delivery system with hydrogel properties.

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Section: Evaluation Of Equilibrium Time and Adsorption Kineticsmentioning

confidence: 99%

Biopolymers recovery from biological sludge and its use as phosphorus biosorbent

Cabral,

Gommersbach,

Cavali

et al. 2024

Eng. Sanit. Ambient.

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“…For example, Qin et al (2022) used CaO and MgO to vitrify municipal sludge in order to obtain a glass phosphate fertilizer with a high proportion of phosphorus (approximately 99.3%) and PTE content in line with current regulations for agricultural use. Schambeck et al (2021) successfully used alginate-like exopolymer hydrogels to recover phosphate from municipal wastewater, with high selectivity for phosphate adsorption (up to 90.8% recovery) even in the presence of competing ions. Rehman and Qayyum (2020) explored the possibility of replacing the phosphate fertilizer in rice-wheat cropping systems with a combined compost of municipal sludge, farmyard manure, and rock phosphate.…”

Section: The Potential Of Municipal Sludge As a Soil Fertilizermentioning

confidence: 99%

Recent Research on Municipal Sludge as Soil Fertilizer in China: a Review

Zhang

Zhou²,

Ren

et al. 2023

Water Air Soil Pollut

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Due to the annual increase in wastewater treatment in most Chinese cities, a major environmental issue has arisen: safe treatment, disposal, and recycling of municipal sludge. Municipal sludge has a high content of carbon and essential nutrients for plant growth; hence, it has gained interest among researchers as a soil fertilizer. This study discusses the potential usage of municipal sludge as soil fertilizer (indicators include nitrogen (N), phosphorus (P), and trace elements) along with its shortcomings and drawbacks (potentially toxic elements (PTEs), organic matter (OM), pathogens, etc.) as well as reviews the latest reports on the role of municipal sludge in land use. The use of municipal sludge as a soil fertilizer is a sustainable management practice and a single application of sludge does not harm the environment. However, repeated use of sludge may result in the accumulation of harmful chemicals and pathogens that can enter the food chain and endanger human health. Therefore, long-term field studies are needed to develop ways to eliminate these adverse effects and make municipal sludge available for agricultural use. Graphical Abstract

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Aerobic Granular Sludge: Perspectives for Excess Sludge Management and Resource Recovery

Dababat,

Enaime,

Wichern

et al. 2023

Chemie Ingenieur Technik

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Aerobic granular sludge (AGS) technology is gaining increasing interest globally. However, several aspects are still challenging its installation, as the integration into existing municipal wastewater treatment plants. The operation of AGS units in continuous flow mode could facilitate that integration; yet has only been experienced at lab and pilot scales. Further, handling of excess granular sludge constitutes a prominent challenge. Even that, adopting effective strategies for its management holds promising contributions to the circular economy by fostering the reuse and recovery of valuable resources. The recovery of phosphorus and alginate‐like polymers holds significant commercial potential worldwide, with broad applications in agriculture, food, pharmaceuticals, and biotechnology.

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Phosphate removal from municipal wastewater by alginate-like exopolymers hydrogels recovered from aerobic granular sludge

Cited by 18 publications

References 47 publications

Biopolymers recovery from biological sludge and its use as phosphorus biosorbent

Biopolymers recovery from biological sludge and its use as phosphorus biosorbent

Recent Research on Municipal Sludge as Soil Fertilizer in China: a Review

Aerobic Granular Sludge: Perspectives for Excess Sludge Management and Resource Recovery

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