Performance of crosslinked bentonite-biocarbon electrodes for chromium mitigation through electrosorption DOI
Vigneshhwaran Ganesan, K.M. Meera Sheriffa Begum

Separation Science and Technology, Год журнала: 2024, Номер unknown, С. 1 - 21

Опубликована: Дек. 26, 2024

Electrosorption has emerged as an energy-efficient technology for water deionization, yet high electrode costs limit its industrial adoption. The present study introduces a sustainable, cost-effective design by crosslinking bentonite – natural, stable clay mineral with rice straw-derived biocarbon (ZC-B) to enhance chromium (Cr(VI)) removal from wastewater. ZC-B electrodes exhibited specific surface area (580 m2/g), mesoporous structure, and significant capacitance (~68 F/g), optimized Cr(VI) removal. tests demonstrated remarkable efficacy, achieving 99.57% at 25 ppm 90.02% 250 ppm, electrosorption capacities of 4.92 mg/g 52.73 mg/g. Real-world trials on chrome plating effluent confirmed the electrode's potential industrial-scale remediation, adhering disposal standards. This work establishes bentonite-modified promising, eco-efficient solution heavy metal through electrosorption.

Язык: Английский

Efficient removal of naphthalene from aqueous solutions using modified kaolin: Optimization and characterization studies DOI

Azeez Abayomi Balogun,

Esther Abigail Udoh,

Agarau Afolorunsho Ayomide

и другие.

European Journal of Sustainable Development Research, Год журнала: 2025, Номер 9(3), С. em0307 - em0307

Опубликована: Май 6, 2025

The presence of organic pollutants, particularly polycyclic aromatic hydrocarbons and dyes, poses significant environmental threats, necessitating urgent remedial measures. This study aims to address the critical issue naphthalene contamination in water by investigating efficacy modified kaolin as a low-cost adsorbent for its removal from aqueous solutions. Raw underwent calcination at 650 °C followed acid treatment using 1M hydrochloric acid. treated was meticulously characterized Fourier-transform infrared spectroscopy scanning electron microscopy. A comprehensive optimization conducted Box-Behnken design, revealing highest efficiency (RE) approximately 87.9% under following conditions: pH 7, initial concentration 100 mg/L, contact time 120 minutes. Equilibrium data fitting into Langmuir isotherm yielded an impressive coefficient determination (R²) value 0.98. Kinetic were successfully modeled pseudo-second-order equation, further validating adsorption process. Thermodynamic studies confirmed feasibility process, evidenced increasingly negative values Gibbs’ free energy alongside positive enthalpy change. Notably, onto clay particles exhibited promising results. Optimization process parameters response surface methodology elucidated optimum condition maximum RE, which experimentally validated. In conclusion, this establishes that represents viable cost-effective applications. Its potential mitigate pollution underscores significance addressing contemporary challenges.

Язык: Английский

Процитировано

1
Optimizing Biochar Preparation for Eco-friendly Adsorption of Polyphenols and Organic Compounds in Pilot-scale: an Application of Doehlert Designs DOI
Imad Rabichi,

Fatima Ezzahra Yaacoubi,

Chaima Sekkouri

и другие.

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown

Опубликована: Авг. 13, 2024

Язык: Английский

Процитировано

5
Modified Sugarcane leaf biochar for remediation of polycyclic aromatic hydrocarbons (PAHs) from wastewater: Activation, optimization, mechanism DOI
Shivangi Pathak, Kamal K. Pant, Priyanka Kaushal

и другие.

Bioresource Technology Reports, Год журнала: 2025, Номер unknown, С. 102113 - 102113

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Removal of heavy metals from single- and multi-metal solution by magnetic microalgae-derived biochar DOI
Xiaosong Tian, Shiyu Chu,

Yujie Hu

и другие.

Journal of Water Process Engineering, Год журнала: 2024, Номер 69, С. 106622 - 106622

Опубликована: Ноя. 22, 2024

Язык: Английский

Процитировано

2
The Biochar Derived from Pecan Shells for the Removal of Congo Red: The Effects of Temperature and Heating Rate DOI Creative Commons

Wanqiang Xu,

Bo Cai, Xujie Zhang

и другие.

Molecules, Год журнала: 2024, Номер 29(23), С. 5532 - 5532

Опубликована: Ноя. 22, 2024

Organic pollutants, especially dyes, are seriously hazardous to the aquatic system and humans due their toxicity, carcinogenic or mutagenic properties. In this study, a biochar prepared from agricultural waste (pecan shells) via pyrolysis was applied remove dye pollutant Congo Red wastewater avoid negative effect ecosystem. This study also investigated of preparation conditions (temperature heating rate) on physicochemical properties adsorption performance biochars. The were characterized using scanning electron microscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, photoelectron spectroscopy. evaluated for removal. results showed that at 800 °C with rate 20 °C/min (PSC-800-20) exhibited higher specific surface area 450.23 m2/g capacity (130.48 mg/g). Furthermore, experiments indicated pseudo-second-order Langmuir models fitted well kinetics isotherms derived pecan shells, respectively. Additionally, PSC-800-20 demonstrated stable over multiple cycles, suggesting its potential regeneration reuse in treatment applications. Therefore, presents promising sustainable solution removal toxic pollutants wastewater.

Язык: Английский

Процитировано

2
Urease-producing bacteria combined with pig manure biochar immobilize Cd and inhibit the absorption of Cd in lettuce (Lactuca sativa L.) DOI

Nannan Su,

Ke Wang,

Zhengtian Zhang

и другие.

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(33), С. 45537 - 45552

Опубликована: Июль 5, 2024

Язык: Английский

Процитировано

0
Optimization of activation by peroxidation and photo-assisted peroxidation of biochar produced from sewage sludge DOI Creative Commons

Victor Hugo Souza Florentino Porto,

Renata Medici Frayne Cuba, Francisco Javier Cuba Terán

и другие.

Desalination and Water Treatment, Год журнала: 2024, Номер 320, С. 100650 - 100650

Опубликована: Июль 31, 2024

Biochar from biomass, a cost-effective and sustainable alternative to pulverized activated carbon (PAC), often faces limitations in pore size surface functionality. Hydrogen peroxide (H₂O₂) activation can enhance biochar's properties but requires large quantities high concentrations, increasing production costs. Advanced oxidation methods, such as H₂O₂/UV radiation, reduce H₂O₂ usage by generating highly reactive hydroxyl radicals (*OH). This study investigates biochar sewage biosolids using H2O2 H2O2/UV radiation. Optimization was conducted via central composite rotational design, varying parameters pH (1.5, 4.0, 7.0, 9.0, 11.5) concentration (0, 10, 20, 30, 40 vol), with methylene blue (MB) adsorption capacity the metric. Characterization performed FTIR, SEM, EDS, XRD, N2 adsorption/desorption techniques. Results indicated optimal at 11.5 20 vol% H2O2. Activation more significant than concentration. Desirability curve analysis suggested that optimized did not significantly capacity, desirability values 93.053 %. Overall, efficiently increased area degrading adsorbent, while effectively removed impurities.

Язык: Английский

Процитировано

0
Characterization of Cocoa Waste Husks Charcoal from Suratthani Thailand as Potential Sources of High Valued Products DOI

Nuttida Srirachya,

Seksit Theuput,

Anurak Yasun

и другие.

Key engineering materials, Год журнала: 2024, Номер 987, С. 55 - 60

Опубликована: Сен. 23, 2024

Cocoa husks, usually discarded as waste, possess valuable biomass that can be utilized. The objective of this research is to study the properties charcoal obtained from carbonization leftover cocoa husks in Suratthani province, Thailand. were carbonized a designed kiln, and temperature was investigated. It found process had four phases, with total duration approximately 3.5 hours. maximum reached during around 470 °C, average ignition 261.1 °C. Heat analysis revealed thermal conductivity about 4678 kcal/kg. Additionally, morphological showed higher porosity compared dried husks. Therefore, has potential used value-added products such briquettes odor-absorbing materials.

Язык: Английский

Процитировано

0
Performance of crosslinked bentonite-biocarbon electrodes for chromium mitigation through electrosorption DOI
Vigneshhwaran Ganesan, K.M. Meera Sheriffa Begum

Separation Science and Technology, Год журнала: 2024, Номер unknown, С. 1 - 21

Опубликована: Дек. 26, 2024

Electrosorption has emerged as an energy-efficient technology for water deionization, yet high electrode costs limit its industrial adoption. The present study introduces a sustainable, cost-effective design by crosslinking bentonite – natural, stable clay mineral with rice straw-derived biocarbon (ZC-B) to enhance chromium (Cr(VI)) removal from wastewater. ZC-B electrodes exhibited specific surface area (580 m2/g), mesoporous structure, and significant capacitance (~68 F/g), optimized Cr(VI) removal. tests demonstrated remarkable efficacy, achieving 99.57% at 25 ppm 90.02% 250 ppm, electrosorption capacities of 4.92 mg/g 52.73 mg/g. Real-world trials on chrome plating effluent confirmed the electrode's potential industrial-scale remediation, adhering disposal standards. This work establishes bentonite-modified promising, eco-efficient solution heavy metal through electrosorption.

Язык: Английский

Процитировано

0