Environmental Research最新文献

{"title":"Bismuth-based photocatalysts for pollutant degradation and bacterial disinfection in sewage system: Classification, modification and mechanism.","authors":"Sihan Ma, Xinglin Yu, Wentao Li, Jianglong Kong, Deng Long, Xue Bai","doi":"10.1016/j.envres.2024.120297","DOIUrl":"10.1016/j.envres.2024.120297","url":null,"abstract":"<p><p>The discharge of polluted water poses a great threat to human health. Therefore, the development of effective sewage treatment technology is a key to achieve sustainable health development of society. Recent research showed that light-driven bismuth-based nanomaterials provided a promising chance for treating sewage system owing to their adjustable electronic features, excellent physical and chemical properties, abundant storage and environmental safety. However, the detailed overview and systematic understanding of the development of highly efficient bismuth-based photocatalysts is still unsatisfactory. In this review, we summarized the classification of bismuth-based photocatalysts, and the relationship between the structural design and the change of optical performance is illustrated. Importantly, the reliable modification strategies for improving photocatalytic capability are emphasized. Finally, the challenges and future development directions of light-driven bismuth-based nanoplatforms in wastewater treatment applications are discussed, hoping to provide an effective guidance for exploring the photocatalytic wastewater treatment process.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120297"},"PeriodicalIF":7.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"The role of interface interaction between iron/sulfate-reducing bacteria (ISRB) and goethite in sulfur (S) redox cycling couple with Cd immobilization","authors":"Bingxin Lu ,&nbsp;Meiqing Chen ,&nbsp;Bolin Wu ,&nbsp;Pingxiao Wu ,&nbsp;Yihao Li ,&nbsp;Zhi Dang","doi":"10.1016/j.envres.2024.120289","DOIUrl":"10.1016/j.envres.2024.120289","url":null,"abstract":"<div><div>Microbial sulfate reduction leads to the formation of various chalcophile trace metal sulfides, thereby immobilizing chalcophile trace metals in sediments. Iron/sulfate-reducing bacteria (ISRB) are ubiquitous in soils and sediments, its ability to reduce Fe(III) (oxyhydr)oxides and biogeochemical significance have attracted much attention. This research investigated the effect of the goethite and ISRB induced S cycle on cadmium mobility. The experiment demonstrated that the removal of Cd(II) in coexistence of ISRB19 and goethite was more efficiently than their individual components. Combined with X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM), Raman spectra and X-ray photoelectron spectroscopy (XPS), conclusions can be drawn that goethite enhanced Cd(II) retention by ISRB, which was attributed to the formation of metabolism product during interaction between ISRB19 (<em>Enterobacter chengduensis</em>) and goethite. Our results revealed the interaction of goethite and ISRB in S cycling under anaerobic conditions with its implications for Cd(II) remediation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120289"},"PeriodicalIF":7.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Dual application of lotus stem in fabricating a bioreactor for the remediation of nitrate, plumbum, and carbamazepine in industrial wastewater","authors":"Xinjie Wang ,&nbsp;Xue Li ,&nbsp;Junfeng Su ,&nbsp;Shuyu Liu ,&nbsp;Xuan Li ,&nbsp;Qingli Zhang ,&nbsp;Tinglin Huang","doi":"10.1016/j.envres.2024.120288","DOIUrl":"10.1016/j.envres.2024.120288","url":null,"abstract":"<div><div>Addressing the treatment of complex industrial wastewater continues to be a substantial challenge within the realm of water treatment. A biofilm reactor was engineered, integrating lotus stem biochar, lotus stem biological filler, and the ZW5 strain for enhanced wastewater treatment. The removal efficiencies of nitrate (NO₃⁻-N), calcium (Ca²⁺), chemical oxygen demand (COD), phosphorus (PO₄^3--P), plumbum (Pb²⁺), and carbamazepine (CBZ) were 98.46, 81.08, 91.79, 96.63, 97.75, and 99.26% when HRT was 3 h, pH was 7.0, Pb²⁺, CBZ, and influent salinity contents were 15.0, 3.0, and 1500 mg L⁻¹. The reactor effectively fixed the microorganisms and provided a good microenvironment and niche, which was conducive to the adsorption of Pb²⁺ and CBZ by microorganisms and biominerals. Furthermore, the modified biochar in the reactor filler facilitated microbial metabolism and enabled indirect electron transfer. Microorganisms altered their dominant community structure in response to Pb²⁺ and CBZ exposure. Microorganisms maintained efficient activity through synergy and direct electron transfer through nanowires. The reactor serves as a model for pollutant removal from complex industrial wastewater, leveraging the multifaceted use of lotus stems and microbial-induced calcium precipitation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120288"},"PeriodicalIF":7.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Synthesized CuO-PEI-JE with 3D open-cell structure as an efficient heterogeneous activator of peroxodisulfate for phenol degradation","authors":"Shengli Zhang ,&nbsp;Zhili Du ,&nbsp;Mingxi Wang ,&nbsp;Diyang Yu ,&nbsp;Yiyue Yang ,&nbsp;Maohong Li ,&nbsp;Weizhen Fang ,&nbsp;Junmin Chen","doi":"10.1016/j.envres.2024.120308","DOIUrl":"10.1016/j.envres.2024.120308","url":null,"abstract":"<div><div>The core of heterogeneous catalytic systems is to design high-performance heterogeneous catalysts. In the present study, CuO-PEI-JE was synthesized via in situ precipitation of CuO on the 3D structure of PEI-JE prepared by a cross-linking method. It possessed a macro-size and 3D open-cell structure, being easily separated and having super-performance for PDS activation. Compared to PDS alone (0.0017 min⁻¹), the CuO-PEI-JE + PDS + NaHCO₃ system increased the k_obs (0.3526 min⁻¹) by a factor of 207 with 100% phenol degradation within 20 min and 87% TOC removal at 30 min. It outperformed many other published heterogeneous persulfate systems in phenol degradation. Meanwhile, the developed system displayed a good anti-interference ability in the coexistence of anions or different water matrixes. After five successive cycles, the degradation rate still kept 100%, exhibiting the excellent reusability of CuO-PEI-JE. Furthermore, the preparation of CuO-PEI-JE had the advantages with moderate preparation conditions (60 °C) and readily available raw materials. The activation mechanism was mainly involved in the formation of active PDS and its further decomposition into ·OH_ads, SO₄^{<strong>·</strong>−}_ads, O₂^{<strong>·</strong>-} and ¹O₂. Surface functional groups and phenol acted as electron donors for active PDS. Phenol was first degraded into hexadienedioic acid, then oxidized to propane diacid and oxalic acid, and finally mineralized into CO₂ and H₂O. This work provides a new strategy for preparing effective heterogeneous persulfate activators and has high potential for the treatment of phenol-containing wastewater.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120308"},"PeriodicalIF":7.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142610903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Ambient air pollution, urban green space and childhood overweight and obesity: A health impact assessment for Barcelona, Spain","authors":"Huyen Nguyen Thi Khanh ,&nbsp;Mariona Rigau-Sabadell ,&nbsp;Sasha Khomenko ,&nbsp;Evelise Pereira Barboza ,&nbsp;Marta Cirach ,&nbsp;Talita Duarte-Salles ,&nbsp;Mark Nieuwenhuijsen ,&nbsp;Martine Vrijheid ,&nbsp;Natalie Mueller ,&nbsp;Jeroen de Bont","doi":"10.1016/j.envres.2024.120306","DOIUrl":"10.1016/j.envres.2024.120306","url":null,"abstract":"<div><h3>Background</h3><div>The burden of childhood overweight and obesity attributable to ambient air pollution and a lack of urban green spaces (UGS) remains unknown. This study aimed to estimate the attributable cases of childhood overweight and obesity due to air pollution and insufficient UGS exposure in Barcelona, Spain.</div></div><div><h3>Methods</h3><div>We applied a quantitative health impact assessment approach. We collected childhood overweight and obesity prevalence levels and exposure data from 69 spatial basic health zones in Barcelona. We estimated particulate matter (PM_2.5) and nitrogen dioxide (NO₂) levels using land use regression models, normalized difference vegetation index (NDVI) levels using remote sensing and percentage of green area (%GA) using land use. We estimated relative risks, population attributable fractions, and preventable overweight/obesity cases in children under following scenarios: Compliance of World Health Organization (WHO) air quality guidelines (AQGs) for (1) PM_2.5 and (2) NO₂; achieving (3) city-target NDVI levels and (4) 25% green area (%GA) recommendations. The analyses were stratified by socioeconomic deprivation index (in quintiles). Uncertainty was quantified using Monte Carlos simulations.</div></div><div><h3>Results</h3><div>Compliance of WHO AQGs could prevent 0.4% [253 (95%CI, −604; 1086)] and 4.2% [3000 (95%CI, 1009; 4943)] of childhood overweight/obesity cases due to excess PM_2.5 and NO₂ levels in Barcelona, respectively. Compliance of NDVI and %GA targeted levels could prevent 6% [4094 (95%CI, 1698; 6379)] and 10% [6853 (95%CI, 1440; 12779)] of childhood overweight/obesity cases respectively. The preventable burdens of childhood overweight/obesity cases were slightly higher in middle-class socioeconomic areas due to the higher adverse exposure levels at baseline (high air pollution, less UGS).</div></div><div><h3>Discussion</h3><div>Compliance with WHO AQGs and achieving UGS targets can reduce childhood overweight and obesity levels in Barcelona, and potentially in other locations as well. This underscores the need for policies that foster healthier urban environments of high environmental quality in order to protect child health.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120306"},"PeriodicalIF":7.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stronger biogeographical pattern of bacterioplankton communities than biofilm communities along a riverine ecosystem: A local scale study of the Kaidu river in the arid and semi-arid northwest of China.","authors":"Yang Hu, Yifu Song, Jian Cai, Jianying Chao, Yi Gong, Xingyu Jiang, Keqiang Shao, Xiangming Tang, Guang Gao","doi":"10.1016/j.envres.2024.120294","DOIUrl":"10.1016/j.envres.2024.120294","url":null,"abstract":"<p><p>Although the biogeographical pattern and mechanisms underlying microbial assembly have been well-explored in lentic ecosystems, the relevant scenarios in lotic ecosystems remain poorly understood. By sequencing the bacterial communities in bacterioplankton and biofilm, our study detected their distance-decay relationship (DDR), and the balance between deterministic and stochastic processes, along the Kaidu river in an arid and semi-arid region of northwest China. Our results revealed that bacterioplankton and biofilm had significantly contrasting community structures. The bacterioplankton communities showed a gradually decreasing trend in alpha-diversity from the headwater to the river mouth, contrasting with the alpha-diversity of biofilm communities which was constant along the river length. Both bacterioplankton and biofilm showed significant DDRs along the 500-km river corridor with the slope of the bacterioplankton DDR being steeper than that of the biofilm DDR, which implies a stronger biogeography of bacterioplankton than biofilm. Relative to biofilm communities, the species interactions formed a denser and more complex network in the bacterioplankton communities than in the biofilm communities. Our results also revealed that there was a transition of community assembly from deterministic to stochastic processes upstream to downstream, although both the bacterioplankton and biofilm communities were mainly regulated by deterministic processes within the entire river. All these empirical results expand our knowledge of microbial ecology in an arid and semi-arid lotic ecosystem.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120294"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Effects of different quorum sensing signal molecules on alleviation of ammonia inhibition during biomethanation","authors":"Siyi Chen ,&nbsp;Ziang Kong ,&nbsp;Liwei Qiu ,&nbsp;Han Wang ,&nbsp;Qun Yan","doi":"10.1016/j.envres.2024.120295","DOIUrl":"10.1016/j.envres.2024.120295","url":null,"abstract":"<div><div>Anaerobic digestion (AD) is a promising technology for achieving both organic wastes treatment and energy recovery. However, challenges such as ammonia inhibition still remain. Quorum sensing (QS) system is relevant with the regulation of microbial community behaviors by releasing and sensing signal molecules, which could improve methane production during AD process. Therefore, the current study explored the effects of different quorum sensing signal molecules on alleviation of ammonia inhibition. The results showed that both secretion of <em>N</em>-butyryl-_DL-homoserine lactone (C4-HSL) and <em>N</em>-(β-ketocaproyl)-_DL-homoserine lactone (3OC6-HSL) could be inhibited by high ammonia stress while stimulation of <em>N</em>-hexanoyl-_L-homoserine lactone (C6-HSL) and <em>N</em>-octanoyl-_DL-homoserine lactone (C8-HSL) secretion might be triggered by ammonia toxicity. Moreover, the alleviation of ammonia inhibition could be achieved by both introducing 3OC6-HSL (0.5 μM) and combination of 3OC6-HSL (0.1 μM) and biochar (4 g/L). Exogenous 3OC6-HSL could regulate microbial social behaviors and enhance the secretion of extracellular polymeric substances (EPS) to promote anaerobic digestion. In addition, the mitigation of ammonia inhibition through exogenous 3OC6-HSL and biochar were confirmed by microbial community changes (<em>Methanobacterium</em>, <em>Propionicicella</em> and <em>Petrimonas</em>). Critical enzymes involved in both acidification and methanogenic steps were enhanced after adding the combination of 3OC6-HSL and biochar. The combination of low levels of 3OC6-HSL and biochar could promote both direct interspecies electron transfer (DIET) process and communication between different anaerobic microorganisms to mitigate ammonia inhibition. The current study will provide primary insights for conquering ammonia inhibition during biomethanation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120295"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Associations of maternal urinary nitrophenol concentrations with adverse birth outcomes and neurodevelopment delay at 4 years of age: The Japan environment and children's study","authors":"Kayo Kaneko ,&nbsp;Yuki Ito ,&nbsp;Takeshi Ebara ,&nbsp;Hiroshi Yatsuya ,&nbsp;Mayumi Sugiura-Ogasawara ,&nbsp;Shinji Saitoh ,&nbsp;Makiko Sekiyama ,&nbsp;Tomohiko Isobe ,&nbsp;Michihiro Kamijima ,&nbsp;the Japan Environment and Children's Study (JECS) Group","doi":"10.1016/j.envres.2024.120290","DOIUrl":"10.1016/j.envres.2024.120290","url":null,"abstract":"<div><div>Maternal urinary nitrophenol concentrations are reportedly associated with preterm birth and foetal/offspring development delay, but the evidence is still inconclusive. We investigated the association between maternal urinary concentrations of 4-nitrophenol (4NP) and 3-methyl-4-nitrophenol (3M4NP) and adverse birth outcomes, as well as offspring neurodevelopment delay, defined using the Ages and Stages Questionnaires at 4 years of age, stratified by offspring sex. A total of 3650 non-hypertensive mothers with singleton births were enrolled from the Japan Environment and Children's Study. High 4NP (≥0.41 μg/L) and 3M4NP (≥0.29 μg/L) were defined as ≥ lowest concentration minimum reporting level. Four groups were created using these dichotomized 4NP and 3M4NP concentrations: ‘both low’, ‘either high/low’, and ‘both high’. Multivariable logistic regression models were used to estimate the adjusted odds ratios (aOR) and population attributable fraction (PAF). For 4NP and 3M4NP, 68.4% and 19.0% of participants had ’high’ urinary concentrations, respectively. Compared to ‘both low’, the overall analysis showed no significant associations between ‘both high’ and any of the outcomes. However, the stratified analysis showed that the aOR (95% confidence interval [CI]) and PAF (95% CI) for ‘both high’ regarding preterm birth (&lt;37 weeks' gestation) were 2.7 (1.3, 5.7) and 16.3% (2.5%, 28.1%), respectively, in male offspring. Among female offspring, the aOR and PAF for the ‘both high’ regarding small-for-gestational-age (SGA)—defined as weight-for-gestational age &lt;10 percentile based on the Japanese neonatal anthropometric charts—were 1.7 (1.0, 2.8) and 10.6% (−0.2%, 20.2%), respectively. Urinary 4NP and 3M4NP concentrations showed no association with low birth weight (&lt;2500 g) and neurodevelopment delay.</div><div>In conclusion, offspring sex-specific associations of maternal urinary nitrophenols with preterm birth and SGA were observed. Even slight elevations in their levels may explain a certain proportion of preterm birth and SGA. The exposure source, expressed by urinary nitrophenols, should be identified.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120290"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"A baroduric immobilized composite material promoting remediation of oil-polluted sediment at typical deep-sea condition: The performances and potential mechanisms","authors":"Yanlu Qiao ,&nbsp;Lingbing Kong ,&nbsp;Mingan Shen ,&nbsp;Yudi Sun ,&nbsp;Shuo Wang ,&nbsp;Yu Gao ,&nbsp;Jianliang Xue ,&nbsp;Qing Jiang ,&nbsp;Dongle Cheng ,&nbsp;Yuyang Liu","doi":"10.1016/j.envres.2024.120299","DOIUrl":"10.1016/j.envres.2024.120299","url":null,"abstract":"<div><div>Contriving immobilized bioreagent is of great significance to enhance bioremediation of marine oil pollution. However, there remains a notable scarcity of correlational study conducted at deep sea condition. Herein, we first developed a baroduric microsphere encasing biotic and chemical materials to remediate oil-contaminated sediments at deep-sea microcosm. Total oil degradation efficiency of microsphere-treated group reached 71% within a month, representing an approximate 35% increase compared to natural remediation. Absorption and biodegradation by microsphere provided a comparable contribution to oil elimination. Together with scanning electron microscope observation, the physical mechanism was that the reticulate structure of microsphere surface facilitating oil adsorption and bacteria attachment. Via metabarcoding analysis for meta and metabolically-active microbes, we demonstrated the primary working center was located at the microsphere. Proteobacteria, Firmicutes, Bacteroidota and Desulfobacterota were the key activated bacteria. More importantly, we revealed the ecological mechanisms were associated with the following aspects: 1) the addition of microsphere significantly improved the metabolic activity of bacteria (particularly including several oil-degrading taxa); 2) the microspheres enhanced ecological stability and microbial functional diversification during bioremediation; 3) expressing activity of pathways involving oil component degradation, biosurfactant production, biofilm architecture, biogeochemical and energy cycling all were observed to be up-regulated in microsphere-treated samples. Altogether, our results provide important theoretical guidance and data support on application of immobilization technology in removing in-situ oil pollution of deep-sea sediment.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120299"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Assessment of cerium adsorption potential of phosphoric acid activated biochar in aqueous system: Modelling and mechanistic insights","authors":"Jeevanantham Sathasivam ,&nbsp;Prasanna Venkatesh Rajaraman ,&nbsp;Selvaraju Narayanasamy","doi":"10.1016/j.envres.2024.120301","DOIUrl":"10.1016/j.envres.2024.120301","url":null,"abstract":"<div><div>Cerium pollution in waterbodies by improper industrial waste disposal is a major concern due to its detrimental impacts on the environment. Therefore, treatment of cerium-contaminated water is inevitable. Hence, this study is focused on the remediation of cerium pollution using phosphoric acid-activated biochar (PPMB) as an adsorbent, synthesized upon pyrolytic activation of palmyra palm male flower-based pristine biochar (PMFB) with H₃PO₄ at 500 °C. The physico-chemical surface properties of PMFB and PPMB were evaluated through various microscopic and spectroscopic analyses. The key parameters such as biochar dosage, pH, temperature, contact time and initial cerium concentration were optimized as 0.5 g/L, 5.0, 303 K, 180 min and 50 mg/L respectively via batch adsorption. Pseudo-second order kinetic and Toth isotherm are the best-fitted models. The thermodynamic parameters including ΔG^◦ (−30.4707 ± 0.7618 kJ/mol at 303 K), ΔH^◦ (16.1499 ± 0.78 kJ/mol), and ΔS^◦ (153.617 ± 3.8404 J/mol/K) conveying that cerium adsorption onto PPMB was spontaneous, endothermic, and highly disordered at PPMB-bulk adsorption medium interface. Precipitation, electrostatic attraction, and surface complexation are predicted to be the predominant mechanisms for the chosen PPMB-cerium adsorption system. Moreover, cerium phytotoxicity on <em>Vigna radiata</em> explains the real-time applicability and feasibility of cerium adsorption using PPMB. Thus, the key findings of this study specified that the higher adsorption capacity of PPMB (141.3484 ± 6.9856 mg/g) contributed by the incorporated phosphate groups, predominant mesoporosity, SSA_BET of 230.559 m²/g and anionic surface at a wider pH range (pH&gt;3.08) make PPMB as efficient, economically feasible and environmentally friendly adsorbent for cerium adsorption in aqueous system.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120301"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}