N-functionalized calcium alginate encapsulated with microalgae for efficient Pb Removal: Mechanisms and performance in batch and column operations DOI Creative Commons
Hyunsoo Kim, Chulhyun Park,

Nag‐Choul Choi

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 486, P. 136997 - 136997

Published: Dec. 24, 2024

In this study, a novel adsorbent called Ca@SP was developed by immobilizing microalgae protein (Spirulina platensis, SP) in an alginate matrix for enhanced Pb²⁺ removal from aqueous solutions. Synthesized via situ crosslinking, leverages the synergistic effects of alginate's gel-forming ability and SP's N-rich biomass. Characterization revealed green spherical hydrogel with BET specific surface area 159.5 m²/g. The composite exhibited pH-dependent highly selective adsorption over other divalent metal ions, which can be explained relatively lower hydrated Gibbs free energy Pb²⁺. main mechanisms were identified as physical adsorption, electrostatic interaction, complexation, ion exchange. Column experiments demonstrated Ca@SP's effectiveness under various operational conditions, including flow rate, influent concentration, column heights. RSM employed to optimize process, initial pH emerging critical parameter influencing efficiency. Desorption showed that acidic solvents had higher desorption efficiency than alkaline solvents, potential reusability confirmed. These results suggest has effective sustainable environments.

Language: Английский

Cyanobacteria for environmental, energy and biomedical application: a review DOI

Xiaoya Ren,

Mengqi Feng,

Meiyi Mao

et al.

Environmental Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 12, 2025

Language: Английский

Citations

0
Impact of Arginine-modified coffee grounds biochar on lead availability in aqueous solution, soil, and sangyod rice DOI

Jarawee CHUPIROM,

Panita Kongsune, Rungroj Chanajaree

et al.

International Journal of Environmental Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Language: Английский

Citations

0
Biohybrid microrobots with a Spirulina skeleton and MOF skin for efficient organic pollutant adsorption DOI
Yongcheng Li, Dajian Li, Yuhong Zheng

et al.

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Biohybrid microrobot (Spirulina, Fe 3 O 4 , ZIF-8) rapidly adsorbs organic pollutants and navigates narrow gaps directionally via magnetic steering.

Language: Английский

Citations

0
Potentiality of Spirulina platensis in zirconium ions biosorption and removal from aqueous solution as an eco-friendly process DOI
Akram A. Mohammed,

Sally S. Muhammad,

Hala A. Mohamed

et al.

Separation Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: April 3, 2025

Language: Английский

Citations

0
A Sustainable Development Strategy for Municipal Solid Waste Incineration Bottom Ash: Adsorption Performance and Mechanism in Removing Heavy Metals from Water DOI Open Access
Yao Zhao,

Wenqian Li,

Jiaqing Wang

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(8), P. 3466 - 3466

Published: April 13, 2025

As urbanization progresses rapidly, the pollution of heavy metal wastewater and disposal municipal solid waste incineration bottom ash (MSWI-BA) have emerged as significant challenges. MSWI-BA is a porous material recognized an environmentally friendly adsorbent. To prevent escalating costs in future practical engineering applications, this study employed unmodified, natural MSWI-BA. This research assessed adsorption capabilities for Pb(II) Zn(II) through static experiments, which included kinetics isotherm studies. The influence various factors on performance was investigated adjusting solution pH amount ash, competitive conditions, regeneration experiments. Advanced techniques, including ESEM-EDS, XRD, FTIR, were utilized to analyze mechanisms. results indicated that under conditions values 4 5, temperature 318 K, dosage 0.1 g/20 mL, maximum capacities 89.09 mg/g 33.77 mg/g, respectively. demonstrates robust potential over multiple cycles, validating its feasibility. principal mechanisms removal include chemical precipitation, ion exchange, surface complexation. By repurposing it efficient low-cost adsorbent, represents sustainable strategy.

Language: Английский

Citations

0
The phosphoric acid extract of fresh biochar and its compound aqueous solutions promoted tobacco plant growth by regulating nutrient-related microorganisms in rhizosphere soil DOI Creative Commons
Xixi Liu, Lifang Wang, Guowei Li

et al.

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: May 22, 2025

Introduction and methods To further explore the biochar–soil–plant interaction mechanisms, rice husk biochar root-promoting solutions were used to prepare extracts compound aqueous solutions, study regulation of acid extract its water agent on growth tobacco, as well effects main nutrient content (nitrogen, phosphorus, potassium), microbial abundance, functional diversity in rhizosphere soil tobacco. Results The results showed that application different concentrations enhanced tobacco plant dry matter accumulation, improved pH, increased available nitrogen organic matter, reduced potassium phosphorus availability. Moreover, effect treatment group nutrients was greater than group. In terms microorganisms, relative abundance Sphingomonas , Vicinamibacteraceae bacterial genus, Mortierella Penicillium fungal bacteria such chemoheterotrophs, aerobic saprotrophs, promoting complexity interconnectivity networks. Discussion summary, improve by enhancing structure, diversity, groups community, thereby growth. These not only provide a theoretical basis for mechanism between biochar, soil, but also certain support development related fertilizers.

Language: Английский

Citations

0
Biochar with further enhanced properties prepared by acid base combined pretreatment for removal of water pollutants DOI Creative Commons
Gao Wei, Yue Shi, Zhou Yu

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: June 3, 2025

In this work, garden waste Clivia miniata leaves (CL) were used as a feedstock to produce high performance biochar (BCL-K-H) through the pretreatment processes of alkali hydrolysis combined with acid hydrolysis. Specifically, CL is subjected two-step process destroy its dense wood fibre structure, and then product processed into by carbonation activation. The results demonstrated that physicochemical properties modified prepared altered in comparison those (BCL). specific surface area increased from 3052.12 3555.31 m2/g, total pore volume 1.94 2.91 cm3/g. characterisation BCL-K-H contained significant number reactive functional groups (e.g. hydroxyl, hydrocarbon carboxyl groups, etc.), which may provide substantial active sites during adsorption pollutants enhance performance. tetracycline hydrochloride (TH) synthetic dye Rhodamine B (RhB) studied gain insight biochars' maximum capacity for was found be 1436.56 mg/g 1505.47 (RhB). on accordance proposed second-order kinetic model Freundlich isotherm model. This finding suggests involve electron transfer between pollutant adsorbent, well heterogeneous surfaces. presence large etc.) within adsorbent material has been postulated pollutants, thereby enhancing Following 10 cycles, removal BCL remained above 60%. All data demonstrate pre-treatment biomass precursors effective feasible further improving biochar, thus providing new strategy development lignocellulosic waste.

Language: Английский

Citations

0
Selective degradation of phenols/nonphenols via biochar-mediated persulfate activation: Influence of redox potential on dominant reactive oxygen species formation DOI
Heejin Yang,

Gyu-Ri Choi,

Seong‐Jik Park

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 75, P. 108094 - 108094

Published: June 1, 2025

Language: Английский

Citations

0
N-functionalized calcium alginate encapsulated with microalgae for efficient Pb Removal: Mechanisms and performance in batch and column operations DOI Creative Commons
Hyunsoo Kim, Chulhyun Park,

Nag‐Choul Choi

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 486, P. 136997 - 136997

Published: Dec. 24, 2024

In this study, a novel adsorbent called Ca@SP was developed by immobilizing microalgae protein (Spirulina platensis, SP) in an alginate matrix for enhanced Pb²⁺ removal from aqueous solutions. Synthesized via situ crosslinking, leverages the synergistic effects of alginate's gel-forming ability and SP's N-rich biomass. Characterization revealed green spherical hydrogel with BET specific surface area 159.5 m²/g. The composite exhibited pH-dependent highly selective adsorption over other divalent metal ions, which can be explained relatively lower hydrated Gibbs free energy Pb²⁺. main mechanisms were identified as physical adsorption, electrostatic interaction, complexation, ion exchange. Column experiments demonstrated Ca@SP's effectiveness under various operational conditions, including flow rate, influent concentration, column heights. RSM employed to optimize process, initial pH emerging critical parameter influencing efficiency. Desorption showed that acidic solvents had higher desorption efficiency than alkaline solvents, potential reusability confirmed. These results suggest has effective sustainable environments.

Language: Английский

Citations

1