International Journal of Phytoremediation最新文献

Evaluating and screening the dosage-dependent bioremediation efficiency of seaweeds and a halophyte species. 评估和筛选海藻和一种盐生植物的剂量依赖性生物修复效率。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-08 DOI: 10.1080/15226514.2026.2661891

Wei Huang, Zohaib Noor, Yuchuan Tang, Yi Yang, Yaohua Shi, Zhifeng Gu

{"title":"Evaluating and screening the dosage-dependent bioremediation efficiency of seaweeds and a halophyte species.","authors":"Wei Huang, Zohaib Noor, Yuchuan Tang, Yi Yang, Yaohua Shi, Zhifeng Gu","doi":"10.1080/15226514.2026.2661891","DOIUrl":"https://doi.org/10.1080/15226514.2026.2661891","url":null,"abstract":"Aquatic macrophytes play a critical role as natural bio-remediators of nutrient-enriched aquatic bodies. We aimed to evaluate the nutrient absorption efficiency and growth rate of four seaweeds (Caulerpa lentillifera, Codium fragile, Betaphycus gelatinus, Gracilaria confervoides) and a halophyte (Sesuvium portulacastrum). G0: with no addition of chemicals; G1: with 10 mg/L NH4Cl and KH2PO4; G2: with 20 mg/L; and G3: with 30 mg/L. The study revealed variable growth rates, with C. lentillifera consistently showing the highest growth indicators, i.e., weight gain, specific growth rate, and weight gain, achieving the highest biomass and fastest growth; conversely, S. portulacastrum showed the lowest performance. WGR reached 289% in C. lentillifera at G3, significantly outperforming other species. Across various nutrient treatments, plant-based bioremediation consistently exceeded the G0 group in absorbing NO2-N, NO3-N, NH4+-N, PO4³-, TSS, and COD (Chemical Oxygen Demand). C. lentillifera was mainly responsible for efficient nutrient removal, whilst B. gelatinus and G. confervoides had moderate nutrient removal efficiencies. Conversely, the halophyte S. portulacastrum exhibited relatively low nutrient assimilation, and all the removal rates were lower in each treatment. Overall, the C. lentillifera and C. fragile confirmed the highest nutrient uptake despite an increase in the chemical dosage used for eutrophic water synthesis.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-11"},"PeriodicalIF":3.1,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of hydrochar and HTC process water on sodic soil reclamation and pulse seedling growth. 氢炭和HTC工艺水对碱土复垦和脉冲苗生长的影响。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-08 DOI: 10.1080/15226514.2026.2661893

Paul Sebastian Selvaraj, Parameswari Ettiyagounder, Balamurugan Rengasamy, Kalaiselvi Periasamy, Davamani Veerasamy, Yazhini Gunasekaran, Vijayakumar Mathiyazhagan

{"title":"Effect of hydrochar and HTC process water on sodic soil reclamation and pulse seedling growth.","authors":"Paul Sebastian Selvaraj, Parameswari Ettiyagounder, Balamurugan Rengasamy, Kalaiselvi Periasamy, Davamani Veerasamy, Yazhini Gunasekaran, Vijayakumar Mathiyazhagan","doi":"10.1080/15226514.2026.2661893","DOIUrl":"https://doi.org/10.1080/15226514.2026.2661893","url":null,"abstract":"This study examined the potential of organic fraction of municipal solid waste (OFMSW) derived hydrochar and the process water from hydrothermal carbonization (200 °C; 4h; liquid/solid ratio - 9:1) for the reclamation of sodic soils. The hydrochar had a high carbon and calcium content, while the process water contained easily soluble K+, Ca2+ and Mg2+ and bioactive compounds. The addition of hydrochar to sodic soil reduced the exchangeable sodium percentage (ESP) and improved the soil physicochemical properties by increasing Ca2+/Mg2+ exchange, promoting Na+ desorption, and enhancing nutrient retention and abundance of O-H, N-O, and N = C = S functional groups supported its reactivity for ion exchange. Strong negative relationships between ESP and Ca2+, Mg2+, K+, P, and OC were observed using Pearson correlation analysis, supporting the hydrochar-mediated redistribution of cations. Additionally, a leach-out study shows 42.6% ESP reduction by hydrochar addition compared with gypsum application (21% ESP reduction). HTC process water at low concentrations (1%-3%) exhibited seed priming effects and increased the germination index over control by 39.2% in black gram, 7.7% in green gram and 14.4% in moth bean. Overall, this study demonstrates a circular, cost-effective strategy integrating hydrochar and processing water for sustainable sodic soil reclamation and improved crop establishment.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-24"},"PeriodicalIF":3.1,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of phytoremediation potential by rhizospheric bacteria of Parthenium hysterophorus growing on disposed distillery sludge for ecorestoration of polluted site. 酒糟污泥根际细菌修复污染场地的潜力评价。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-07 DOI: 10.1080/15226514.2026.2661892

Kshitij Singh, Mohd Zobair Iqbal, Ram Chandra

{"title":"Evaluation of phytoremediation potential by rhizospheric bacteria of Parthenium hysterophorus growing on disposed distillery sludge for ecorestoration of polluted site.","authors":"Kshitij Singh, Mohd Zobair Iqbal, Ram Chandra","doi":"10.1080/15226514.2026.2661892","DOIUrl":"https://doi.org/10.1080/15226514.2026.2661892","url":null,"abstract":"This study investigates the role of rhizospheric bacteria in enhancing the phytoremediation capacity of Parthenium hysterophorus growing on distillery sludge, aiming at the ecorestoration of polluted environments. Physicochemical analysis revealed notable reductions in pollutants, with salts decreasing to 15.74-53.79 mg/kg and metals reduced by 28.69-80.26 mg/kg. GC-MS profiling of fresh and 50-day-old plant tissues indicated bioconversion and disappearance of several distillery-derived organic pollutants, underscoring the plant's ability to degrade and transform contaminants. Metal analysis showed bioaccumulation in roots, shoots, and leaves, with bioconcentration factors (BCF > 1) for Fe, Zn, Cu, Ni, Pb, and Cr, and translocation factors (TF > 1) for Fe, Zn, Mn, Ni, and Pb, confirming strong phytoextraction potential. Furthermore, phytostabilization of Cu and Cr was observed. Transmission electron microscopy of roots revealed dense metal deposits in the cytoplasm, along with structural adaptations such as multi-vacuoles, mitochondria, and chloroplasts, indicating high tolerance to metal stress. The rhizospheric bacterial community, dominated by Alcaligenes faecalis, Cytobacillus firmus, Bacillus subtilis, and Niallia circulans, exhibited plant growth-promoting traits that support remediation. Overall, the findings highlight P. hysterophorus as an effective candidate for phytoremediation and bacterial-assisted eco-restoration of industrially contaminated sites.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-17"},"PeriodicalIF":3.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexibly connectable combined filters (co-filters) for decentralized treatment of greywater. 灵活连接的组合过滤器（共过滤器），用于分散处理灰水。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-04 DOI: 10.1080/15226514.2026.2656778

Siamak Gholami, Aaron Bauer, Mohammad Varzandeh, Mohammad Fardin Gholami, Aki Sebastian Ruhl, Jürgen P Rabe

{"title":"Flexibly connectable combined filters (co-filters) for decentralized treatment of greywater.","authors":"Siamak Gholami, Aaron Bauer, Mohammad Varzandeh, Mohammad Fardin Gholami, Aki Sebastian Ruhl, Jürgen P Rabe","doi":"10.1080/15226514.2026.2656778","DOIUrl":"https://doi.org/10.1080/15226514.2026.2656778","url":null,"abstract":"Affordable and sustainable water purification and reuse remain a global challenge for decentralized systems. The release of untreated or insufficiently treated grey and wastewater into surface waters contributes to pollution and increases downstream treatment costs due to nutrients, organic matter, heavy metals, and microbial contamination. Hybrid approaches combining biological and physicochemical processes are emerging, yet modular systems enabling direct integration of living plant roots with functional biopolymer-based filters remain underexplored. Here we demonstrate a modular co-filter system integrating plant roots with biopolymer filters enabling effective decentralized greywater treatment within flexibly connectable pot units. The combination of Sparganium erectum with cellulose-chitosan (CC) filters, including copper-functionalized variants (CCC) was evaluated using synthetic greywater under laboratory conditions. The co-filter achieved substantial reductions in organic matter, nutrients, turbidity, and microbial indicators. CCC filters exhibited enhanced antibacterial activity against Escherichia coli via copper release, whereas CC filters had limited antimicrobial effects. The plants tolerated metal-containing greywater and contributed to nutrient and organic matter removal without adverse effects on plant biomass. Treatment performance improved with increasing system complexity. These results demonstrate the feasibility of a modular, nature-based co-filter concept as an approach for decentralized greywater treatment and water reuse.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-12"},"PeriodicalIF":3.1,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147837676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile green chemistry approach for environmental remediation: catalytic removal of toxic compounds and pathogens from water using Hyptis capitata plant mediated iron nanoparticles. 简单的绿色化学方法用于环境修复：利用海蛇属植物介导的铁纳米颗粒催化去除水中的有毒化合物和病原体。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-03 DOI: 10.1080/15226514.2026.2663358

R Revathy, Nayana Joseph, T Sajini, Cyril Augustine

{"title":"Facile green chemistry approach for environmental remediation: catalytic removal of toxic compounds and pathogens from water using Hyptis capitata plant mediated iron nanoparticles.","authors":"R Revathy, Nayana Joseph, T Sajini, Cyril Augustine","doi":"10.1080/15226514.2026.2663358","DOIUrl":"https://doi.org/10.1080/15226514.2026.2663358","url":null,"abstract":"Green synthesis of iron nanoparticles (FeNPs) has gained more interest among researchers because it is an eco-friendly method that avoids harmful chemicals as stabilizing agents. These nanoparticles have been widely used for the degradation of pollutants and bacterial growth inhibition without affecting mammalian cells. In this study, FeNPs were prepared using an unconventional technique with Hyptis capitata (HC) leaf extract as both reducing and capping agent through the microwave method. The formation was confirmed by the color change of the reaction mixture and the characteristic UV-visible absorption peak obtained at 294 nm. The FT-IR interpretation shows the involvement of plant phytochemicals in the reduction and capping of nanoparticles. A broad and diffuse hump obtained in the X-ray diffraction (XRD) spectrum identifies an amorphous structure, and the zeta potential value (-30 mV) confirmed colloidal stability. Thermo-gravimetric analysis determined the thermal stability and degradation pattern of nanoparticles. The dynamic light scattering analysis of FeNPs confirms monodisperse particle size distribution. HR-TEM analysis proves the presence of spherical FeNPs with an average size of 3-6 nm, and the SAED pattern signifies the amorphous nature of FeNPs in the colloid. The EDX spectrum confirmed the presence of elemental iron. FeNPs demonstrated bacterial growth inhibition against Staphylococcus aureus and Escherichia coli, along with the catalytic efficiency to remove methyl orange and 4-nitrophenol from aqueous systems. These results reveal the potential of HC leaf extract-mediated FeNPs as a functionalized biomaterial for environmental remediation.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-13"},"PeriodicalIF":3.1,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineered surface modification of Terminalia chebula for augmented dye eradication from wastewater. 桔梗表面改性对废水染料去除效果的影响。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-03 DOI: 10.1080/15226514.2026.2660857

Puja Chakraborty, Saumyashree Nayak, Priyanka Priyadarsini Samal, Banashree Dey, Soumen Dey

{"title":"Engineered surface modification of Terminalia chebula for augmented dye eradication from wastewater.","authors":"Puja Chakraborty, Saumyashree Nayak, Priyanka Priyadarsini Samal, Banashree Dey, Soumen Dey","doi":"10.1080/15226514.2026.2660857","DOIUrl":"https://doi.org/10.1080/15226514.2026.2660857","url":null,"abstract":"Search for greener alternatives for dye-contaminated wastewater treatment is on the rise. The study presents an eco-friendly approach for treating dye-contaminated wastewater using a surface-modified phytosorbent, Terminalia chebula (TC), which has been strategically activated using sodium hydroxide followed by citric acid. Alkali treatment reduces hydrophilic components, enhancing water stability, while citric acid introduces carboxylic groups that improve dye adsorption. Characterization via FTIR, FESEM-EDX and BET confirmed the presence of polyphenols, porous tube-like structures, and a surface area of 3.79 m2/g. pHzpc of the material is 4.50. The experimentally determined adsorption capacities for CV and MB were 59.19 mg/g and 59.50 mg/g, respectively, at an initial concentration of 1000 mg/L, under optimal conditions (45 min, 0.1 g dose, pH 7). High adsorption capacity despite low surface area highlights the dominant contribution of functional-group-mediated chemical interactions. Adsorption followed pseudo-second order kinetics; CV fit the Temkin isotherm, and MB fit the Langmuir isotherm models. The material was reusable for three cycles with methanol regeneration in CV, and HCl in MB, and common ions caused minimal interference. Taken together, the results suggest that Terminalia Chebula can serve as an environmentally benign option for CV and MB removal from various wastewater matrices.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-15"},"PeriodicalIF":3.1,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phytoremediation of nanoparticle contaminated soil using the fast growing herbaceous plant Solidago altissima. 利用速生草本植物一枝黄花修复纳米颗粒污染土壤。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-03 DOI: 10.1080/15226514.2026.2662552

Uhram Song, Minhyun Lee, Deokjoo Son, Hojun Rim

{"title":"Phytoremediation of nanoparticle contaminated soil using the fast growing herbaceous plant Solidago altissima.","authors":"Uhram Song, Minhyun Lee, Deokjoo Son, Hojun Rim","doi":"10.1080/15226514.2026.2662552","DOIUrl":"https://doi.org/10.1080/15226514.2026.2662552","url":null,"abstract":"This study investigated the potential of the fast-growing invasive plant Solidago altissima for phytoremediation of nanoparticle-contaminated soils. Plants were grown in soils treated with titanium dioxide (TiO2) and silver (Ag) nanoparticles at concentrations of 0, 10, 100, 1000, and 5000 mg/kg to evaluate growth performance and nanoparticle accumulation. TiO2 and Ag nanoparticles were selected due to their widespread industrial use and increasing environmental occurrence, raising concerns about their persistence in terrestrial ecosystems. S. altissima exhibited stable eco-physiological performance, including chlorophyll content, height growth, and biomass production across treatment levels. The plant tolerated TiO2 nanoparticles up to 5000 mg/kg without significant growth inhibition. In Ag nanoparticle-treated soils, biomass showed a concentration-dependent response: compared with the control (9.70 g), total dry biomass increased at 10 mg/kg (11.74 g) but decreased at higher concentrations (6.72-6.43 g at 1000-5000 mg/kg). Nanoparticle accumulation was predominantly observed in roots, and root concentrations increased with increasing soil nanoparticle levels, indicating strong belowground retention of Ti and Ag. The extensive rhizome system and high biomass production of S. altissima suggest its potential for soil-targeted phytoremediation. Overall, the results indicate that the remediation role of S. altissima is more consistent with root-based phytostabilization than with shoot-based phytoextraction. These findings suggest that utilizing this species in disturbed environments, such as roadside soils where it is already widely established, may provide dual benefits by contributing to nanoparticle stabilization in soils while supporting invasive plant biomass management. Further studies are needed to evaluate long-term ecological impacts and field-scale applicability.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-12"},"PeriodicalIF":3.1,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorptive removal of methylene blue using water hyacinth roots: batch and column adsorption, kinetics, isotherm and ANN-GA modeling, scale-up, phytotoxicity, and disposal pathways. 使用水葫芦根吸附去除亚甲基蓝：批和柱吸附，动力学，等温线和ANN-GA建模，放大，植物毒性和处理途径。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-05-03 DOI: 10.1080/15226514.2026.2658735

Shraddha Sinha, Nirjhar Bar, Subhasis Roy, Sudip Kumar Das

{"title":"Adsorptive removal of methylene blue using water hyacinth roots: batch and column adsorption, kinetics, isotherm and ANN-GA modeling, scale-up, phytotoxicity, and disposal pathways.","authors":"Shraddha Sinha, Nirjhar Bar, Subhasis Roy, Sudip Kumar Das","doi":"10.1080/15226514.2026.2658735","DOIUrl":"https://doi.org/10.1080/15226514.2026.2658735","url":null,"abstract":"Methylene Blue (MB), a widely used cationic dye, is of particular concern due to its persistence and adverse effects on ecosystems and human health. This study used batch and fixed-bed column adsorption studies to evaluate dried water hyacinth roots as an environmentally benign, affordable, and sustainable adsorbent for MB removal. The effects of operating parameters on MB adsorption were systematically investigated in batch experiments. Under optimized conditions (pH 6, 0.2 g dose, 90 min contact time), a maximum extraction efficiency of 96.5% was achieved. The pseudo-second-order model best describes the adsorption process. At the same time, isotherm analysis confirmed multilayer adsorption with a maximum capacity of 154.54 mgg-1 as predicted by the Freundlich model. Column experiments were conducted to evaluate continuous adsorption performance. Kinetic models, including Thomas, Yoon-Nelson, and Bohart-Adams, were utilized, with the Thomas model (R2 = 0.96) showing the strongest agreement with experimental data. A Genetic Algorithm (GA) was employed to accurately predict adsorption performance. Phytotoxicity tests of the treated effluent confirmed reduced toxicity, underscoring the environmental safety of the process. Overall, the findings establish water hyacinth root as a promising green adsorbent for the remediation of industrial dyes, with clear potential for scale-up.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-18"},"PeriodicalIF":3.1,"publicationDate":"2026-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147815228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of diclofenac from wastewater by adsorption on a biosorbent from dragon fruit waste: equilibrium and kinetics. 龙果渣生物吸附剂吸附去除废水中的双氯芬酸：平衡和动力学。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-04-29 DOI: 10.1080/15226514.2026.2661317

Laísa Teixeira da Silva, Toni Jefferson Lopes, Cristina Benincá, Everton Fernando Zanoelo

{"title":"Removal of diclofenac from wastewater by adsorption on a biosorbent from dragon fruit waste: equilibrium and kinetics.","authors":"Laísa Teixeira da Silva, Toni Jefferson Lopes, Cristina Benincá, Everton Fernando Zanoelo","doi":"10.1080/15226514.2026.2661317","DOIUrl":"https://doi.org/10.1080/15226514.2026.2661317","url":null,"abstract":"This study aimed to investigate the equilibrium and kinetics of adsorption of diclofenac on non-activated and activated charcoal made from dragon fruit peel at a carbonization temperature of 500 °C. The experiments were carried out in agitated flasks containing the adsorbents and diclofenac solutions at initial adsorbate concentrations from ∼20 to 307 mg L-1 at ∼25 °C and pH 5.7. The highest adsorption capacity of the adsorbent was 64.54 mg g-1 by charcoal activation with inorganic acids. Using activated charcoal as adsorbent, the highest equilibrium yield of removal of diclofenac from the liquid was close to 91% in approximately 1 hr. At the examined pH, the deprotonation of activated charcoal and the almost complete dissociation of diclofenac indicate physical adsorption of the conjugate anion of diclofenac. These explanations are consistent with results of point of zero charge of activated charcoal, pKa of diclofenac, Brunauer-Emmett-Teller analysis, energy dispersive X-ray and Fourier transform infrared spectroscopy of the adsorbents. The equilibrium and kinetic results were described by the Langmuir and Freundlich isotherms and simplified kinetic models involving empirical pseudo first- and second-order adsorption rate expressions.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-12"},"PeriodicalIF":3.1,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147771065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phycoremediation potential of Microcystis aeruginosa and Auxenochlorella pyrenoidosa for salinity reduction: mechanisms and isotherm modeling. 铜绿微囊藻和核核生长型球藻对盐度降低的藻修复潜力：机制和等温线模型。

IF 3.1 4区环境科学与生态学

International Journal of Phytoremediation Pub Date : 2026-04-28 DOI: 10.1080/15226514.2026.2657540

Rania Omar, Khaled N M Elsayed, Sherif H M Hassan, Ibraheem B M Ibraheem, Mahmoud S M Abdel Wahed

{"title":"Phycoremediation potential of Microcystis aeruginosa and Auxenochlorella pyrenoidosa for salinity reduction: mechanisms and isotherm modeling.","authors":"Rania Omar, Khaled N M Elsayed, Sherif H M Hassan, Ibraheem B M Ibraheem, Mahmoud S M Abdel Wahed","doi":"10.1080/15226514.2026.2657540","DOIUrl":"https://doi.org/10.1080/15226514.2026.2657540","url":null,"abstract":"The treatment of saline and brackish water remains a major challenge, driving the search for low-energy biological alternatives. Accordingly, this study evaluated the salinity-reduction capacity of Microcystis aeruginosa and Auxenochlorella pyrenoidosa, isolated from brackish water in the vicinity of Lake Qarun, Fayoum Governorate, Egypt, as potentially sustainable biological agents for salt removal from saline waters. The isolates were evaluated under varying NaCl concentrations (10, 20, and 30 g/L) and inoculation ratios 1:6.67, 1:10, and 1:20 (v/v) over a 12-day treatment period. Physicochemical and molecular characterizations were conducted using total dissolved solids, electrical conductivity (EC), and pH measurements, Fourier-transform infrared (FTIR), scanning electron microscopy (SEM)-energy-dispersive X-ray spectrometer (EDX), and adsorption isotherm modeling. M. aeruginosa achieved a maximum salt removal of 17.41% (3.01 g/L) at 20 g/L NaCl with a 1:6.67 inoculation ratio, while A. pyrenoidosa removed 2.67 g/L (15.62%). Corresponding EC reductions reached 3.91 and 3.62 mS/cm, respectively. SEM-EDX and FTIR analyses revealed distinct, species-specific structural and molecular responses, with M. aeruginosa exhibiting greater biomass-associated Na+ retention and a higher apparent ion-removal capacity than A. pyrenoidosa. In both species, salt removal was concentration dependent and involved a combination of surface-level interactions and intracellular or biomass-associated ion retention processes, thereby underscoring their potential as sustainable, complementary approaches to conventional desalination technologies.","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"1-16"},"PeriodicalIF":3.1,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147771112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0