Sustainable Chemistry for the Environment最新文献_第9页

A sustainable method of crystal violet dye removal using novel strain Klebsiella pneumoniae ED2 利用新型肺炎克雷伯菌ED2去除结晶紫染料的可持续方法

Sustainable Chemistry for the Environment Pub Date : 2025-01-16 DOI: 10.1016/j.scenv.2025.100210

Akanksha Pandey, Navneet Bithel, Sandeep Kumar, Sachin Kumar

{"title":"A sustainable method of crystal violet dye removal using novel strain Klebsiella pneumoniae ED2","authors":"Akanksha Pandey, Navneet Bithel, Sandeep Kumar, Sachin Kumar","doi":"10.1016/j.scenv.2025.100210","DOIUrl":"10.1016/j.scenv.2025.100210","url":null,"abstract":"<div><div>This study aimed to identify a potent bacterium capable of degrading Crystal Violet (CV) dye, a prominent textile dye causing environmental pollution in water bodies. A bacterial strain identified by 16S rRNA sequencing as <em>Klebsiella pneumoniae</em> ED2 was isolated from textile industrial effluent sediment samples. The isolated bacteria exhibited non-pathogenic and non-antibiotic resistant characteristics. The preliminary decolorization experiment evinced high CV-degrading competency i.e. 92.58 % by <em>K. pneumoniae</em>. Optimization experiment were conducted using a central composite design (CCD) approach to optimize pH, temperature, dye concentration, and degradation time parameters. Employing response surface methodology, degradation efficiency was enhanced. The maximum decolorization of 93.65 % was achieved at 37°C with a 1 mL inoculum volume over 48 h using 200 mg/L of CV dye. Confirmation of biodegradation was accomplished through UV–visible spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and GC-MS analysis of both the intact CV dye and its degraded products. Microbial toxicological assessments using <em>Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa</em>, and phytotoxicity studies with <em>Vigna radiata</em> L. significantly reduced dye toxicity post-degradation. In conclusion, the identified <em>K. pneumoniae</em> strain proved to be an efficient microbe for dye degradation, offering potential applications in mitigating pollution caused by industrial dyes.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100210"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From urea to urea cocrystals: A critical view of conventional and emerging nitrogenous fertilizer materials for improved environmental sustainability 从尿素到尿素共晶：对改善环境可持续性的传统和新兴氮肥材料的批判观点

Sustainable Chemistry for the Environment Pub Date : 2025-01-11 DOI: 10.1016/j.scenv.2025.100209

Mohamed Eisa , Mariana Brondi , Clinton Williams , Reagan Hejl , Jonas Baltrusaitis

{"title":"From urea to urea cocrystals: A critical view of conventional and emerging nitrogenous fertilizer materials for improved environmental sustainability","authors":"Mohamed Eisa , Mariana Brondi , Clinton Williams , Reagan Hejl , Jonas Baltrusaitis","doi":"10.1016/j.scenv.2025.100209","DOIUrl":"10.1016/j.scenv.2025.100209","url":null,"abstract":"<div><div>Nitrogen (N) is a critical nutrient that is essential for plant growth and sustainable population development. Since the inception of modern fertilizer technology, N has been supplied to the environment via low-stability fertilizer materials which has resulted in very large losses of reactive nitrogen to the environment. These losses have severe impacts on soil, air and surface water locally and result in changes to the ecosystem biodiversity as well as climate globally. Synthesis of nitrogen fertilizer, such as urea, consumes 1–2 % of global energy as well as significant amounts of natural gas. Therefore, it is necessary to improve the stability of fertilizer-N in the environment to decrease their losses and increase N-use efficiency.</div><div>This work provides a critical evaluation of the current and emerging methods to stabilize urea fertilizers to deliver nitrogen to the environment more sustainably. The emphasis in this review is placed on material chemistry development, such as recent emergence of urea cocrystals that possess reduced solubility and enhanced environmental stability. The materials analysis suggests that future research needs to focus on urea stabilization methods that create partial bonds between the constituents beyond weak molecular interaction. This requires avoiding unsustainable feedstock, such as formaldehyde, or exogenous stabilizing molecules that affect the soil biota, such as urease inhibitors. These developmental products then need to be transformed into thriving technologies to provide high-value fertilizers by decreasing the energy footprint needed to make ammonia, a precursor of urea.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100209"},"PeriodicalIF":0.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Allyl triphenyl phosphonium bromide, an ionic liquid as an eco-friendly and green inhibitor for corrosion of aluminium in hydrochloric acid: Mechanistic insights and experimental validation 离子液体丙烯基三苯基溴化磷在盐酸中作为环保和绿色的铝腐蚀缓蚀剂：机理和实验验证

Sustainable Chemistry for the Environment Pub Date : 2025-01-09 DOI: 10.1016/j.scenv.2025.100206

Mansi Y. Chaudhary , Meenakshi Gupta , Prerna Bansal , Yudhvir S. Sharma , Neelu Dheer , Arun Kant , M. Ramananda Singh , Shramila Yadav

{"title":"Allyl triphenyl phosphonium bromide, an ionic liquid as an eco-friendly and green inhibitor for corrosion of aluminium in hydrochloric acid: Mechanistic insights and experimental validation","authors":"Mansi Y. Chaudhary , Meenakshi Gupta , Prerna Bansal , Yudhvir S. Sharma , Neelu Dheer , Arun Kant , M. Ramananda Singh , Shramila Yadav","doi":"10.1016/j.scenv.2025.100206","DOIUrl":"10.1016/j.scenv.2025.100206","url":null,"abstract":"<div><div>Allyl Triphenyl Phosphonium Bromide (ATPB), an ionic liquid was used as an inhibitor for mitigation of corrosion of aluminium in a 0.5 M hydrochloric acid. The mitigating properties of ATPB was experimentally evaluated through gravimetric, potentiodynamic polarization and electrochemical impedance techniques. The highest inhibition efficiency of 99.95 % was achieved at 308 K. The mitigation of corrosion was caused by the spontaneous assembly of an ATPB monolayer onto the aluminium surface. As the concentration of ATPB rises, the extent of adsorption also increases. The accumulation of ATPB molecules over aluminium surface obeys the Langmuir adsorption isotherm. The strength of adsorption is also enhanced through the electrostatic interaction of bromide anion with the surface of aluminium. The enhancement of charge transfer resistance (R<sub>ct</sub>) values on addition of ATPB in electrochemical impedance spectroscopic studies in comparison over the R<sub>ct</sub> value in HCl without ATPB reveals that charge transfer mechanism is involved in the inhibition process. The decrease in double layer capacitance (C<sub>dl</sub>) also occurred along with an increase in concentrations. This suggests, the adsorption is the key to the inhibition of corrosion of aluminium. SEM micrograms and EDXS confirmed the presence of a protective ATPB layer on the aluminium surface. Density functional theory (DFT) calculation also supports the experimental observation.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100206"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extraction of anthocyanins and other phenolics from dried blackcurrant (Ribes nigrum L.) pomace via ultrasonication 超声波法提取黑加仑果渣中花青素及其他酚类物质

Sustainable Chemistry for the Environment Pub Date : 2025-01-09 DOI: 10.1016/j.scenv.2025.100208

Nur Izzati Mohamed Nawawi, Nur Allisya Akma Ahmad Khushairi, Giroon Ijod, Ezzat Mohamad Azman

{"title":"Extraction of anthocyanins and other phenolics from dried blackcurrant (Ribes nigrum L.) pomace via ultrasonication","authors":"Nur Izzati Mohamed Nawawi, Nur Allisya Akma Ahmad Khushairi, Giroon Ijod, Ezzat Mohamad Azman","doi":"10.1016/j.scenv.2025.100208","DOIUrl":"10.1016/j.scenv.2025.100208","url":null,"abstract":"<div><div>Blackcurrant (<em>Ribes nigrum</em> L.) pomaces are rich in phenolic compounds, particularly anthocyanins yet often discarded as waste during juice processing. The heat-sensitive phenolic compounds such as anthocyanins, unavoidably, degrade due to higher temperatures and longer times during conventional extraction methods. Typically, organic solvents such as ethanol, methanol, and acetone were used to extract the phenolic compounds from dried blackcurrant pomaces (DBP). The necessity for employing substantial amounts of solvents in conventional extraction methods, such as water baths, resulted in health hazards and environmental pollution. Hence, this study aimed to investigate the effect of ultrasonication (US) and water bath (WB) extraction time on the anthocyanins composition, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of DBP extracts. The DBP powders were mixed with 50 % ethanol in the beaker (1:40, w/v) and extracted for 5 − 30 min using ultrasonication at 50 % amplitude and a water bath at 180 rpm. The extracts were further analyzed using the HPLC analysis, Folin-Ciocalteu method, flavonoid content, DPPH, and FRAP assays. As a result, ultrasonication only required 10 min to produce ∼27 % higher total anthocyanins (37.15 ± 0.71 mg/g) than the water bath at 20 min (26.97 ± 0.18 mg/g), while the highest TPC (38.02 ± 0.24 mg GAE/g) and TFC (38.83 ± 1.41 mg CE/g) were recorded at 20 min. Also, a significantly higher (p < 0.05) DPPH inhibition (52.76 ± 0.90 %) and reducing power (352.60 ± 7.64 µmol TE/g) were detected after 25 min of ultrasonication. Overall, ultrasonication is suitably used as an alternative to conventional extraction, where the natural colorant obtained from DBP extracts could be potentially utilized in commercial food applications.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100208"},"PeriodicalIF":0.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pre-treatment and post-treatment strategies for enhancing anaerobic digestion in poultry slaughterhouse wastewater management 加强家禽屠宰场废水厌氧消化的前、后处理策略

Sustainable Chemistry for the Environment Pub Date : 2024-12-31 DOI: 10.1016/j.scenv.2024.100199

Madhu Sudan Reddy Atchala , Polisetty Venkateswara Rao , Sridhar Pilli , Ashish Pawar , Rajesh Ganiga , R.D. Tyagi

{"title":"Pre-treatment and post-treatment strategies for enhancing anaerobic digestion in poultry slaughterhouse wastewater management","authors":"Madhu Sudan Reddy Atchala , Polisetty Venkateswara Rao , Sridhar Pilli , Ashish Pawar , Rajesh Ganiga , R.D. Tyagi","doi":"10.1016/j.scenv.2024.100199","DOIUrl":"10.1016/j.scenv.2024.100199","url":null,"abstract":"<div><div>Over the years, anaerobic digestion (AD) has proven to be an effective method for breaking down organic materials, reducing sludge, and generating renewable energy. However, its application in treating poultry slaughterhouse wastewater (PSWW) faces challenges, particularly due to the high concentrations of fats, oils, grease (FOG) around 400 – 1110 mg/L, and ammonia around 25–90 mg/L (initial concentration), which can inhibit the AD process. Additionally, even after AD, residual nutrients in the treated wastewater can lead to environmental issues such as eutrophication and methemoglobinemia if discharged untreated. This review explores the effects of FOG and ammonia on AD, along with the influence of nutrient levels on water bodies. It evaluates potential pre-treatment methods to enhance degradation by challenges posed by FOG and ammonia. Additionally, the review discusses post-treatment options to mitigate nutrient-related issues. Finally, this study concludes with a discussion of future perspectives.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100199"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic application of second cycle copper-based laboratory waste for synthesis of beta-keto-1,2,3-triazole: A micro circular economy approach 二循环铜基实验室废弃物催化合成β -酮-1,2,3-三唑的微循环经济方法

Sustainable Chemistry for the Environment Pub Date : 2024-12-30 DOI: 10.1016/j.scenv.2024.100205

Randhir Rai

引用次数: 0

Biodiesel production in Africa from non-edible sources: Sources, production, properties and policies 非洲非食用生物柴油的生产：来源、生产、特性和政策

Sustainable Chemistry for the Environment Pub Date : 2024-12-30 DOI: 10.1016/j.scenv.2024.100201

Khalifa Musa Muhammad , Modupe Munirat Adeyemi , Joseph Jacob , Abubakar Rabiu Koko , Kabiru Dauda , Anas Ali Tamasi , Ibrahim Yahuza

{"title":"Biodiesel production in Africa from non-edible sources: Sources, production, properties and policies","authors":"Khalifa Musa Muhammad , Modupe Munirat Adeyemi , Joseph Jacob , Abubakar Rabiu Koko , Kabiru Dauda , Anas Ali Tamasi , Ibrahim Yahuza","doi":"10.1016/j.scenv.2024.100201","DOIUrl":"10.1016/j.scenv.2024.100201","url":null,"abstract":"<div><div>Energy is crucial in the 21st century as it immensely contributes to growth and development. Fossil fuel serves as the backbone of the world’s energy demand. This source of energy is non-renewable and it adversely affects the environment. Africa suffers from the challenge of energy crisis and this negatively affects the development of the continent. To remedy this, it is pertinent to focus on energy sources that are environmentally friendly. This study highlights the potential of biodiesel production in Africa with a focus on non-edible sources. The sources, emission characteristics, oil content, percentage yield and properties of these samples are stated. These sources do not compete with food so there is no contention of “food versus fuel”. The study clearly highlights the advantages of biodiesel such as high cetane number and flash point; less toxicity; renewable; and biodegradable amongst others. Techniques for enhancing the cold flow properties of biodiesel are stated. Policies and laws that support biodiesel production were discussed. The key factors that should be incorporated in every biofuel policy or legislation was recommended. Biodiesel utilization is in accordance with Sustainable Development Goal 7 “clean and affordable energy”. The study also presents potentials, benefits, challenges, and solution of biodiesel production and utilization in Africa which gives a picture of its socio-economic implications.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100201"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-component sustainable catalytic crafting of novel heterocyclic spiranes as topoisomerase II inhibitors 新型杂环螺旋烷作为拓扑异构酶II抑制剂的多组分可持续催化工艺

Sustainable Chemistry for the Environment Pub Date : 2024-12-28 DOI: 10.1016/j.scenv.2024.100204

Ravi A. Dabhi , Milan P. Dhaduk , Nirbhay K. Savaliya , Aelvish D. Padariya , Aakanksha P. Patil , Riya A. Desai , Vaibhav D. Bhatt , Bhupesh S. Bhatt

{"title":"Multi-component sustainable catalytic crafting of novel heterocyclic spiranes as topoisomerase II inhibitors","authors":"Ravi A. Dabhi , Milan P. Dhaduk , Nirbhay K. Savaliya , Aelvish D. Padariya , Aakanksha P. Patil , Riya A. Desai , Vaibhav D. Bhatt , Bhupesh S. Bhatt","doi":"10.1016/j.scenv.2024.100204","DOIUrl":"10.1016/j.scenv.2024.100204","url":null,"abstract":"<div><div>Scientists have recently focused on crafting a more natural approach to catalysis to make organic synthesis more sustainable and eco-friendly. This manuscript highlights an environment-friendly, efficient synthesis of novel spirocyclic derivatives (QP 1 – QP 12) of quinoxaline pyrimidine mediated through sustainable green catalyst potash alum. The research was conducted with thoroughness, as computational techniques were used to examine the interaction of topoisomerase II enzyme with spiro compounds. The computational analysis was also accompanied to determine the interaction of spirocyclic compounds with biomolecules, i.e., 1BNA and BSA. Anticancer activity was carried out on MCF-7 regarding IC<sub>50</sub> value, which ranges between 76.67 and 138.34 µg/mL. The spirocyclic compounds showed good antimicrobial activity and cytotoxic nature against five bacterial strains and artemia cysts. The compound’s MIC and LC<sub>50</sub> values were found in the 135–195 µM range and 6.26–10.91 µg/mL, respectively. Spectroscopic techniques were performed for evaluating the binding strength between spirocyclic compounds and biomolecules. The binding constant values of QP 1 – QP 12 with CT-DNA and BSA were found in the range of 0.61–1.45 × 10<sup>5</sup> M<sup>−1</sup> and 0.16–2.19 × 10<sup>4</sup> M<sup>−1</sup>, respectively. SwissADME and admetSAR, two online platforms, were used to assess the pharmacokinetic profile and determine the drug-likeness of the synthesized compounds.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100204"},"PeriodicalIF":0.0,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of pre-treated liming wastewater in tannery by mixed banana peel adsorbent in column filtration studies 混合香蕉皮吸附剂柱过滤处理制革厂预处理石灰废水的研究

Sustainable Chemistry for the Environment Pub Date : 2024-12-28 DOI: 10.1016/j.scenv.2024.100203

Farhan Munim, Mubashir Bin Faruk, Md.Abul Hashem, Md.Mukimujjaman Miem

{"title":"Treatment of pre-treated liming wastewater in tannery by mixed banana peel adsorbent in column filtration studies","authors":"Farhan Munim, Mubashir Bin Faruk, Md.Abul Hashem, Md.Mukimujjaman Miem","doi":"10.1016/j.scenv.2024.100203","DOIUrl":"10.1016/j.scenv.2024.100203","url":null,"abstract":"<div><div>Liming is considered the first chemical treatment in the tanning industry where the animal’s outer covering is treated with sodium sulfide and hydrated lime. Generated wastewater from liming operations contains a large amount of soluble sulfide. Upon acidification, the emitted soluble sulfide in wastewater poses an environmental threat generating gaseous hydrogen sulfide. In this study, a combination of chemically and thermally activated banana peel adsorbent was utilized to eliminate soluble sulfide from the tannery liming wastewater in the column experiment. The prepared absorbents were assessed by a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) for characterization. Results indicate that the column analysis at optimum adsorbent dose and flow rate showed a significant reduction of sulfide (95.8 %), biochemical oxygen demand (93.3 %), chemical oxygen demand (93.2 %), and total dissolved solids (99.6 %). SEM micrographs of the treated adsorbent illustrated the adsorption of sulfide and other pollutants confirming the presence of various elements in the EDS spectrum. The mechanism of higher sulfide removal efficiency is explained through the pH point of zero charge (pHpzc). The liming wastewater treatment with the proposed method showed acceptable outcomes compared to the previous studies. Hence, the present investigation illustrates a promising sustainable approach using modified banana peel adsorbent to treat tannery liming wastewater.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100203"},"PeriodicalIF":0.0,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling and prediction of cadmium ion biosorption efficiency using neural networks with Hypnea valentiae 利用神经网络模拟和预测垂花对镉离子的生物吸附效率

Sustainable Chemistry for the Environment Pub Date : 2024-12-27 DOI: 10.1016/j.scenv.2024.100197

P. Thamarai, R. Kamalesh, V.C. Deivayanai, S. Karishma, A. Saravanan, P.R. Yaashikaa, A.S. Vickram

{"title":"Modeling and prediction of cadmium ion biosorption efficiency using neural networks with Hypnea valentiae","authors":"P. Thamarai, R. Kamalesh, V.C. Deivayanai, S. Karishma, A. Saravanan, P.R. Yaashikaa, A.S. Vickram","doi":"10.1016/j.scenv.2024.100197","DOIUrl":"10.1016/j.scenv.2024.100197","url":null,"abstract":"<div><div>Heavy metals in water, particularly cadmium, pose significant risks to environmental and public health due to their toxicity. This study investigates the removal of cadmium ions from aqueous solutions using <em>Hypnea valentiae</em>, a naturally abundant and cost-effective biosorbent. Batch experiments demonstrated that optimal cadmium removal occurred at pH 5, a biosorbent dose of 2 g/L, a contact time of 50 min, and a temperature of 303 K. Characterization using scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction confirmed morphological and chemical changes in the biosorbent, indicating successful binding of cadmium ions to surface functional groups. Kinetic analysis revealed that the adsorption process followed a pseudo-second-order model, highlighting chemisorption as the dominant mechanism. Isotherm modeling showed that the Langmuir model best described the adsorption, with a maximum capacity of 141.24 mg/g. Thermodynamic studies indicated that the process was exothermic and spontaneous, with decreasing spontaneity at higher temperatures. Furthermore, an artificial neural network model demonstrated strong predictive accuracy (R<sup>2</sup> = 0.989), closely aligning experimental and predicted outcomes. Regeneration tests showed that the <em>Hypnea valentiae</em> biosorbent retained 63.4 % of its original efficiency after eight cycles, highlighting its durability and potential for reuse. These findings highlight <em>Hypnea valentiae</em>'s potential as an efficient, sustainable biosorbent for cadmium remediation, offering a viable solution for addressing heavy metal pollution in water systems.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"9 ","pages":"Article 100197"},"PeriodicalIF":0.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0