Synthesis of hydrochars derived from industrial laundry sludge and its application in the removal of cationic dye

Camilo, Fernanda Carla; Araújo, Thiago Peixoto de; Quesada, Heloise Beatriz; Moura, Alexandre Amado de; Moisés, Murilo Pereira; Faria, Sérgio Henrique Bernardo de; Barros, Maria Angélica Simões Dornellas de

doi:10.1016/j.jwpe.2021.101999

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…Almost 100% dye removal was achieved within 120 min (MB) and 180 min (CR), due to the presence of carbonyl and carboxylic functional groups on the hydrochar surface [73]. The removal of MB was also investigated using oxone-treated pine wood hydrochar and KHCO 3 -modified hydrochar from industrial laundry sludge [74,75]. The highest adsorption capacities for MB sourced from separate studies were 86.7 mg/g and 808.83 mg/g (Table 3) [74,75].…”

Section: Dyesmentioning

confidence: 99%

“…The removal of MB was also investigated using oxone-treated pine wood hydrochar and KHCO 3 -modified hydrochar from industrial laundry sludge [74,75]. The highest adsorption capacities for MB sourced from separate studies were 86.7 mg/g and 808.83 mg/g (Table 3) [74,75]. Pine wood hydrochar showed a substantial increase in carboxylic content upon oxidation.…”

Section: Dyesmentioning

confidence: 99%

“…This surface modification provides more sites for pollutant binding and, thus, a higher adsorption capacity [74]. Camilo et al [75] revealed that increased surface area (3005.57 m 2 /g) upon activation was the reason for such a high adsorption capacity. In the study of Petrović et al [60], it was pointed out that Mg-doped pyro-hydrochars prepared from waste grape pomace, corn cobs, and Miscanthus × giganteus can be used as efficient MB sorbents with capacities of 289.65 mg/g, 262.30 mg/g, and 232.48 mg/g, respectively (Table 3).…”

Section: Dyesmentioning

confidence: 99%

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Hydrothermal Carbonization of Waste Biomass: A Review of Hydrochar Preparation and Environmental Application

Petrović,

Ercegović,

Simić

et al. 2024

Processes

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The concept of a bio-based economy has been adopted by many advanced countries around the world, and thermochemical conversion of waste biomass is recognized as the most effective approach to achieve this objective. Recent studies indicate that hydrothermal carbonization (HTC) is a promising method for the conversion of waste biomass towards novel carbonaceous materials known as hydrochars. This cost-effective and eco-friendly process operates at moderate temperatures (180–280 °C) and uses water as a reaction medium. HTC has been successfully applied to a wide range of waste materials, including lignocellulose biomass, sewage sludge, algae, and municipal solid waste, generating desirable carbonaceous products. This review provides an overview of the key HTC process parameters, as well as the physical and chemical properties of the obtained hydrochar. It also explores potential applications of produced materials and highlights the modification and functionalization techniques that can transform these materials into game-changing solutions for a sustainable future.

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Section: Dyesmentioning

confidence: 99%

Section: Dyesmentioning

confidence: 99%

Section: Dyesmentioning

confidence: 99%

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Hydrothermal Carbonization of Waste Biomass: A Review of Hydrochar Preparation and Environmental Application

Petrović,

Ercegović,

Simić

et al. 2024

Processes

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“…This process has the advantage of using milder temperatures (180-250°C) and water that acts as a solvent and catalyst. The favorable reaction conditions make this process more economically feasible compared to other chemical processes (Yu et al, 2022;Camilo et al, 2021;Liu et al, 2022). Carbon-based materials such as hydrochar have high chemical stability, porous structure, physical and chemical properties, and surface area (Zulfajri et al, 2021) .…”

Section: Introductionmentioning

confidence: 99%

Preparation of Hydrochar from Salacca zalacca Peels by Hydrothermal Carbonization: Study of Adsorption on Congo Red Dyes and Regeneration Ability

Hasanah¹,

Wijaya

Arsyad

et al. 2022

Sci. Technol. Indones

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Hydrochar of Salacca zalacca peels (HC-SP) is prepared by hydrothermal carbonization treatment of Salacca zalacca peels (SP) obtained from local fruits at Palembang, South Sumatera, Indonesia, with the resulting yield weight reaching 90%. Materials are characterized using the XRD diffraction, FTIR spectrum, and SEM-EDX. The XRD pattern shows the characteristics of the formation of amorphous compounds. The FTIR spectrum confirms the presence of functional groups O-H, C-H, C=C, and C-O. Data of SEM-EDX show that materials have heterogeneous morphologies, form aggregates, and in HC-SP materials there is an increase in carbon content from the initial material. The capacity of SP in the congo red (CR) adsorption process is 33.003 mg/g and increases to 133.333 mg/g in HC-SP. The maximum dye adsorbed was achieved at pH 4. The adsorption kinetics followed PSO with the equilibrium adsorption occurring at 90 minutes, and the adsorption isotherm followed the Langmuir isotherm with the value of R2 closer to the value of 1. A positive 4H value indicated that the adsorption is an endothermic process. In contrast, an 4S value suggested that the degree of irregularity in the adsorption process is small in large concentrations. Based on data regeneration ability, materials of SP and HC-SP can be used in the three cycles regeneration process of the CR adsorption process. The adsorption process of CR occurs physically and chemically based on enthalpy values and FT-IR data after being adsorbed with CR.

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“…Various techniques were developed for the potential removal of MB including adsorption [5][6], ultrasonic irradiation [7], photocatalytic degradation [8] and occulant [9]. Among the available methods, the photocatalytic degradation is seems to be promising to degrade the MB via, photo-oxidative and photoreductive degradations [10].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

Baharin

Hashim

Norsham

et al. 2021

Preprint

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The present study highlights the sunlight-assisted photodegradation of methylene blue (MB) using tungsten disulphide/polypyrrole (WS2/PPy) composite as a photocatalyst. WS2/PPy was prepared via oxidative polymerization using ferric chloride (FeCl3) as an oxidant. Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) measurement were used to ensure the physicochemical properties of WS2/PPy. The photocatalytic efficiencies of the photocatalysts were examined by degrading methylene blue (MB) under sunlight irradiation. The results showed that the degradation efficiency of WS2/PPy was higher than the pristine PPy Several optimizations such as effect of the concentration, contact time, photocatalyst dosage and initial concentration were investigated. The results revealed that, under optimum condition of pH 3, 100 mg photocatalyst dosage, 10 ppm MB initial concentration within 180 minutes contact time, were the most effective parameters, that produced 96.15% of sunlight-assisted photodegradation in aqueous solution of MB.

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Synthesis of hydrochars derived from industrial laundry sludge and its application in the removal of cationic dye

Cited by 11 publications

References 52 publications

Hydrothermal Carbonization of Waste Biomass: A Review of Hydrochar Preparation and Environmental Application

Hydrothermal Carbonization of Waste Biomass: A Review of Hydrochar Preparation and Environmental Application

Preparation of Hydrochar from Salacca zalacca Peels by Hydrothermal Carbonization: Study of Adsorption on Congo Red Dyes and Regeneration Ability

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

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