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Showing papers on "Sawdust published in 2021"


Journal ArticleDOI
TL;DR: In this article, a mixture of 3-aminopropyl-triethoxysilane (APTES) with the biomass Ayous wood sawdust (AW) was used to remove reactive blue 4 (RB-4) from water.
Abstract: Background Biomass-based materials present low sorption capacity. In order to overcome this disadvantage, chemical modification of these materials is required. Methods Hybrids of biomass-based materials were obtained by reacting (25%-200% weight) 3-aminopropyl-triethoxysilane (APTES) with the biomass Ayous wood sawdust (AW), obtaining the hybrid materials AW@APTES-0.25, AW@APTES-0.50, AW@APTES-1.0, AW@APTES-1.5, and AW@APTES-2.0, that were characterized by hydrophobic/hydrophilic balance, CHN elemental analysis, surface area, TGA, FTIR, and pHpzc. Significant findings For screening purposes, the five materials were tested as adsorbents to remove reactive blue 4 (RB-4) from water. The results showed that AW@APTES-0.5 attained the maximum removal of RB-4. The kinetics and equilibrium data were suitably fitted by the nonlinear General-order kinetic (GO) and Liu equilibrium adsorption models. The maximum amount adsorbed of RB-4 dye was 415.1 mg g − 1 using AW@APTES-0.5 (50 °C). An increase in the Qmax value of AW@APTES-0.5 concerning unmodified AW attained up to 21.6 times. The ΔG° and ΔH° indicated that the adsorption processes of RB-4 onto adsorbents are endothermic and spontaneous, and the magnitude of enthalpy of adsorption (25.10 kJ mol−1) is compatible with the electrostatic attraction mechanism. The adsorbents’ applicability for treating simulated dye effluents showed an excellent efficiency attaining 98.66% removal of the effluent.

70 citations


Journal ArticleDOI
TL;DR: The fuel, thermal, and surface properties of the biochars were dependent on the feedstock type and pyrolysis temperature, with the highest value of 43 m2 g-1 achieved for sawdust biochar produced at 500 °C.

67 citations


Journal ArticleDOI
TL;DR: Ball-milled biochar can be used as a potential adsorbent material in VOCs treatment and shows higher adsorption rate than the pristine biochars.

57 citations


Journal ArticleDOI
01 Jul 2021-Energy
TL;DR: In this article, the co-pyrolysis of cellulose or lignin with sawdust was investigated, aiming to probe the impacts of volatiles from lignins or cellulose on evolution of products.

57 citations


Journal ArticleDOI
TL;DR: In this paper, the feasibility of using sawdust and/or mature compost as a bulking agent to achieve effective composting was assessed and the results showed that mixing of FWD with sawdust alone or together with mature compost could produce quality compost with reduced NH4+-N within 2 weeks of co-composting.

54 citations


Journal ArticleDOI
TL;DR: The presence of chromium in aquatic streams due to the discharge of industrial effluents is of great concern because of its toxic nature as mentioned in this paper, and removal of Cr(VI) ion from wastewater is a necessar...
Abstract: The presence of chromium in aquatic streams due to the discharge of industrial effluents is of great concern because of its toxic nature. Removal of Cr(VI) ion from wastewater is a necessar...

50 citations


Journal ArticleDOI
15 May 2021-Fuel
TL;DR: In this article, the physicochemical properties, co-combustion characteristic and kinetic behavior of sawdust char and residual carbon in order to guide its combustion as the potential solid fuel in the industrial-scale furnace were investigated.

49 citations


Journal ArticleDOI
TL;DR: In this article, a co-pyrolysis was performed for a mixture of waste biomass sawdust (oak, poplar and fir wood) and waste polystyrene from dairy product packaging.

49 citations



Journal ArticleDOI
TL;DR: In this article, a co-HTC of sewage sludge and fuel additives was used to improve dewaterability of sludge, but its solid product (hydrochar) requires enhancement for energy production.

39 citations


Journal ArticleDOI
TL;DR: The analysis suggests that biomass waste pyrolysis processes can be divided into three zones, proceeding from a heat-transfer dominant zone (zone 1) to catalysis dominant zones (zones 2 and 3) and the indexes conducted in the present study can provide useful measures to identify the catalytic pyroglysis dynamics and levels.

Journal ArticleDOI
TL;DR: In this article, the synergetic interactions between biomass (groundnut shell, bagasse, rice husk, Prosopis juliflora, mixed wood sawdust) and hydro-rich plastics (Low-density polyethylene (LDPE) and Polyisoprene (PIP)) in microwave co-pyrolysis were investigated.

Journal ArticleDOI
TL;DR: In this article, the authors evaluated the influence of carbonization conditions on biochar characteristics and concluded that pyrolysis has the potential to add value to regionally available oak sawdust on a sustainable basis and help to improve essential soil functions.
Abstract: Biochar, a byproduct obtained from valorization of waste biomass, is utilized in environmental management to restore or improve soil functions where it alters chemical, physical, and biological processes. Therefore, in this study, vastly available oak sawdust was evaluated as a potential feedstock for biochar production with the aim to identify the influence of carbonization conditions on biochar characteristics. Slow pyrolysis with temperatures ranging from 400 to 600 °C and residence times from 15 to 120 min was performed. The feedstock material and resulting biochar were characterized for physical, chemical, and hydraulic properties that are significant for their ability and characteristics as a soil amendment. The pH, BET surface area, carbon content, nutrient content, alkaline functional groups, and water holding capacity increased with increasing pyrolysis temperature and residence time while biochar yield, O/C ratio, and acidic functional groups decreased. Although the effect of holding time on biochar physicochemical properties is less significant than that of temperature, it is an essential parameter to obtain desired biochar properties. It can be concluded that pyrolysis has the potential to add value to regionally available oak sawdust on a sustainable basis and help to restore or improve essential soil functions. Graphical abstract

Journal ArticleDOI
TL;DR: Results indicated that RCS impregnation by OMW significantly improved the produced biochar's chemical properties, especially its nutrients contents, and ICS-OMW-B application as an organic fertilizer showed promising results in terms of produced fresh and dry masses, as well as potassium bioavailability.

Journal ArticleDOI
TL;DR: In this article, four magnetic biochars (MBs) were prepared from two mixtures of Sappeli sawdust with NiCl2 plus ZnCl2 solutions, and the pyrolyzed material was leached out with 0.1m HCl under conventional reflux (AL- 80°C, 2 h) or assisted by ultrasound-leaching (US- 15min, 600
Abstract: Four magnetic biochars (MBs) were prepared from two mixtures of Sappeli sawdust with NiCl2 solution or Sappeli sawdust with NiCl2 plus ZnCl2 solutions. These mixtures formed two pastes that were dried and further pyrolyzed at 700 °C under nitrogen flow. The pyrolyzed material was leached out with 0.1 M HCl under conventional reflux (AL- 80 °C, 2 h) or assisted by ultrasound-leaching (US- 15 min, 600 W), obtaining four biochars: SNiAL, SNiUS, SNiZnAL, SNiZnUS. The biochars were characterized by VSM, XRD, FTIR, isotherms of adsorption and desorption of nitrogen, pHpzc, hydrophobically characteristics (HI), TGA, elemental analysis (CHN/O). The data show that using the leaching process assisted by ultrasound can obtain biochars that present good magnetization saturation, with a lower leaching time than conventional leaching. The four biochar were tested as adsorbents to remove ten emerging contaminants and four dyes of aqueous effluents. It was observed that the impregnation of zinc chloride in the samples led to an increase in the surface areas of the magnetic biochars, which influenced the most of sorption capacities of the adsorbents for the different sorbing species. Making a ratio of sorption capacities of SNiAL/SNiZnAL and SNiUS/SNiZnUS, it was obtained the values, respectively, of 0.9761, and 0.9710 (Acid Red 1), 2.057, and 3.030 (Reactive Blue 4), 4.192, and 1.971 (Basic Violet 3), 3.359, and 1.129 (Basic Green 1), 1.673, and 1.835 (Paracetamol), 3.612, and 3.779 (Propranolol), 5.871, and 5.171 (Sodium Diclofenac), 1.457, and 1.607 (Nicotinamide), 1.094 and 1.093 (Caffeine), 1.167, and 2.398 (4-chloroaniline), 1.009 and 0.9965 (2-nitrophenol), 1.156 and 1.341 (Resorcinol), 1.299 and 1.331 (Hydroquinone), 0.9975 and 1.019 (4-bromophenol).

Journal ArticleDOI
TL;DR: In this paper, a novel biomass gasification-based solid oxide fuel cell (SOFC) integrated with a gas turbine, a thermoelectric generator, a multi-stage flash desalination with brine recirculation unit (MSF-BR), and a CO2 capture unit for power and freshwater production.


Journal ArticleDOI
TL;DR: In this paper, a co-composting of food waste with sawdust and mature compost was successfully demonstrated to treat high benzophenone (BP) concentration (927 ± ǫ 229 mg kg−1), with a removal efficiency of 97% after 35 days of incubation.
Abstract: Benzophenone (BP) and its derivatives are extensively used as ultraviolet filters in modern society and increasingly being released into the environment. Co-composting of food waste with sawdust and mature compost was successfully demonstrated to treat high BP concentration (927 ± 229 mg kg−1), with a removal efficiency of 97% after 35 days of incubation. The highest biodegradation rate of 55 mg kg−1day−1 was observed at the thermophilic stage. The biodegradation followed second-order kinetics, and the half-life of BP was 1.3 days during the co-composting process. Additionally, malodorous gas emissions from the co-composting process were also analyzed. The malodorous compounds, including ammonia (NH3), hydrogen sulfide (H2S), and volatile organic sulfide compounds (VOSCs), peaked at the thermophilic phase. NH3 and H2S were the main components contributing to 92% and 7.6% of the total malodorous concentration (617 ppm). Dimethyl disulfide (28.9 ppb) and dimethyl sulfide (23.5 ppb) concentrations accounted for ∼ 58.9% of the total VOSC emitted. The malodorous emissions were positively correlated with temperature, pH, and negative with oxygen content during the co-composting. Sawdust and mature compost enhanced oxygen penetration in the compost mixture and thereby reduced odor emission. These results support that co-composting could be a technically and economically feasible treatment technology for the degradation of BP and can be used to treat other emerging organic pollutants.

Journal ArticleDOI
TL;DR: In this paper, the catalytic co-pyrolysis of torrefied poplar wood sawdust (TPW) and high-density polyethylene (HDPE) was investigated over hierarchical HZSM-5.

Journal ArticleDOI
TL;DR: This study investigated microbial removal of vanadium (V) by sawdust of pine used as a sole carbon source to offer a potential approach to microbially removing V(V) for contaminated groundwater and even for disposal of agricultural and forestry wastes.

Journal ArticleDOI
TL;DR: In this article, the authors used sawdust wastes as the low-cost feedstock to prepare porous carbons by KOH activation, and the preparation parameters were optimized via orthogonal experiment.

Journal ArticleDOI
Chuang Yang1, Shuzhong Wang1, Yanhui Li1, Zhang Yishu1, Cui Chengchao1 
TL;DR: In this article, the authors investigated the thermodynamic equilibrium analysis of supercritical water gasification (SCWG) involving several typical feedstocks (coal, sewage sludge, microalga, and sawdust).

Journal ArticleDOI
TL;DR: Analysis of the lignin oil revealed that in-situ hydrogen generated from methanol decomposition promoted the hydrogenolysis of βO4 ether linkage and selective hydrogenation of unsaturated side-chains of phenolic monomers.

Journal ArticleDOI
TL;DR: Experimental evidence shows that the Cordia trichotoma sawdust can be applied for the removal of crystal violet and a mixture of other dyes that contain them.
Abstract: In this work, for the first time, Cordia trichotoma sawdust, a residue derived from noble wood processing, was applied as an alternative biosorbent for the removal of crystal violet by discontinuous and continuous biosorption processes. The optimum conditions for biosorption of crystal violet were 7.5 pH and a biosorbent dosage of 0.8 g L−1. The biosorption kinetics showed that the equilibrium was reached at 120 min, achieving a maximum biosorption capacity of 107 mg g−1 for initial dye concentration of 200 mg L−1. The Elovich model was the proper model for representing the biosorption kinetics. The isotherm assays showed that the rise of temperature causes an increase in the biosorption capacity of the crystal violet, with a maximum biosorption capacity of 129.77 mg g−1 at 328 K. The Langmuir model was the most proper model for describing the behavior. The sign of ΔG0 indicates that the process was spontaneous and favorable, whereas the ΔH0 indicates an endothermic process. The treatment of the colored simulated effluent composed by dyes and salts resulted in 80% of color removal. The application of biosorbent in the fixed-bed system achieved a breakthrough time of 505 min, resulting in 83.35% of color removal. The Thomas and Yoon-Nelson models were able to describe the fixed-bed biosorption behavior. This collection of experimental evidence shows that the Cordia trichotoma sawdust can be applied for the removal of crystal violet and a mixture of other dyes that contain them.

Journal ArticleDOI
TL;DR: In this article, waste biomass of sawdust with low cost, abundant resource and special lumen structure, has been used as scalable carrier for Co-MOFs (ZIF-67).

Journal ArticleDOI
TL;DR: In this article, the impact of black soldier fly larvae (BSFL) on the conversion of food waste and sawdust into compost via the parameters of maturity, nutrient transformation and volatile fatty acids (VFAs) was assessed.

Journal ArticleDOI
TL;DR: In this paper, the pig manure biogas digestate (PMBD) was evaluated as a potential part of seedling substrates and composting was considered a pretreating method to improve its characters.

Journal ArticleDOI
15 Feb 2021-Energy
TL;DR: In this paper, single particle combustion behaviors of coal-biomass fuel mixtures are studied and it is observed that with the increases in surface area/volume ratio, flaming and char combustion decreases due to reduction in effective surface area of the particle for combustion.

Journal ArticleDOI
TL;DR: Sawdust or wood shaving is a relatively abundant and inexpensive lignocellulosic compound, which is provided by mother nature as mentioned in this paper, and it is a waste of industry and agriculture, that is found in large quantities and has disposal problems.

Journal ArticleDOI
TL;DR: In this paper, a fixed-bed downdraft gasifier was used to perform the gasification on a lab-scale of rice husk, sawdust, and coconut shell.
Abstract: Synthetic gas generated from the gasification of biomass feedstocks is one of the clean and sustainable energy sources. In this work, a fixed-bed downdraft gasifier was used to perform the gasification on a lab-scale of rice husk, sawdust, and coconut shell. The aim of this work is to find and compare the synthetic gas generation characteristics and prospects of sawdust and coconut shell with rice husk. A temperature range of 650–900 °C was used to conduct gasification of these three biomass feedstocks. The feed rate of rice husk, sawdust, and coconut shell was 3–5 kg/h, while the airflow rate was 2–3 m3/h. Experimental results show that the highest generated quantity of methane (vol.%) in synthetic gas was achieved by using coconut shell than sawdust and rice husk. It also shows that hydrogen production was higher in the gasification of coconut shell than sawdust and rice husk. In addition, emission generations in coconut shell gasification are lower than rice husk although emissions of rice husk gasification are even lower than fossil fuel. Rice husk, sawdust, and coconut shell are cost-effective biomass sources in Bangladesh. Therefore, the outcomes of this paper can be used to provide clean and economic energy sources for the near future.