The influence of biochar and compost mixtures, water content, and gas flow rate, on the continuous adsorption of methane in a fixed bed column

La, Helen; Hettiaratchi, J. Patrick A.; Achari, Gopal

doi:10.1016/j.jenvman.2018.12.015

Cited by 14 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since no activation process is involved, most studies show that biochar's structure is monopolized by microporosity (Chu et al, 2018;Wang et al, 2018;Zhang X. et al, 2021). Therefore, biochar is suitable to store gases such as sulfur dioxide, SO 2 (Braghiroli et al, 2019;Zhang et al, 2020), CO 2 (Huang et al, 2019;Yan et al, 2021), hydrogen sulfide, H 2 S (Ma et al, 2021), and methane, CH 4 (La et al, 2019;Alimohammadi et al, 2022;Shahabi Nejad and Sheibani, 2022;Zarei et al, 2022). In terms of definition, biochar is a black carbonaceous material produced from biomass through heat treatment at temperatures higher than 250 °C in the absence of air or limited air (Ben Salem et al, 2021).…”

Section: Biocharmentioning

confidence: 99%

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Alharbi

Hameed

Alotaibi

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

Textile dyes are organic compounds that can pose an environmental threat if not properly treated. They can cause many problems ranging from human health, ecosystem disturbances, and the reduction of the esthetic value of water bodies. The adsorption process using activated carbon (AC) has been proven to be effective in treating dyes in wastewater. However, the production of AC is limited by the non-renewables and relatively expensive precursor of coal. Date palm residues (DPRs) provide a good alternative for AC’s precursor due to their continuous supply, availability in a large amount, and having good physiochemical properties such as high oxygen element and fixed carbon. This study provides a review of the potential of date palm residues (DPRs) as AC in adsorbing textile dyes and the recent technological advances adopted by researchers in producing DPR-based AC. This review article focuses solely on DPR and not on other biomass waste. This study presents a background review on date palms, textile dyes, biochar, and AC, followed by production methods of AC. In the literature, DPR was carbonized between 250 and 400°C. The conventional heating process employed an activation temperature of 576.85–900°C for physical activation and a maximum of 800°C for physicochemical activation. Chemical agents used in the chemical activation of DPR included NaOH, KOH, ZnCl2, H3PO4, and CaCl2. The maximum surface area obtained for DPR-AC was 1,092.34 and 950 m2/g for physical and chemical activation, respectively. On the other hand, conditions used in microwave heating were between 540 and 700 W, which resulted in a surface area of 1,123 m2/g. Hydrothermal carbonization (HTC) utilized carbonization temperatures between 150 and 250°C with pressure between 1 and 5 MPa, thus resulting in a surface area between 125.50 and 139.50 m2/g. Isotherm and kinetic models employed in the literature are also discussed, together with the explanation of parameters accompanied by these models. The conversion of DPR into AC was noticed to be more efficient with the advancement of activation methods over the years.

show abstract

Section: Biocharmentioning

confidence: 99%

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Alharbi

Hameed

Alotaibi

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Adsorbed natural gas (ANG) can be a competitive technology for fuel storage in natural gas vehicles (Alhasan et al 2016), and would be more economical compared to liquefied natural gas (LNG) or compressed natural gas (CNG) for oil and gas fields. Biochars can make low-cost adsorbents (Bamdad et al 2018;Dissanayake et al 2020;La et al 2019;Nanda et al 2016;Zhang et al 2019). Such adsorbents may store natural gas at ambient temperature and moderate pressure and eliminate the need for high-pressure compression the associated large compressors and thick-walled heavy vessels.…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Adsorption of methane on biochar for emission reduction in oil and gas fields

Wang

et al. 2023

Biochar

View full text Add to dashboard Cite

To contribute to the reduction of methane emissions, using low-cost biochar as adsorbents for capturing and storing methane in oil and gas fields is investigated. This work presents results of methane adsorption on four biochars made from forestry wastes in comparison with the results of three commercial activated carbons. Although the adsorption capacity of the biochars is lower by over 50% than that of the activated carbons, thelow-cost and potential environmental benefits provide the incentive to the investigation. Moreover, it is shown that biochar can store more methane than vessels of compressed gas up to the pressure of 75 bar, suggesting the possibility of avoiding high-pressure gas compression and heavy vessels for cost savings in oil and gas fields. The thermodynamic and kinetic behaviors of the adsorption are studied and implications for the targeted application are discussed. Graphical Abstract

show abstract

“…Several studies have shown that biochar can reduce CH 4 emissions from com posting (Yin et al, 2021). Biochar has been shown to have good gas adsorption capacity (La et al, 2019). However, biochar can indirectly affect CH 4 production by improving composting per formance and influencing microbial activity (Yin et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Impact of different structures of biochar on decreasing methane emissions from sewage sludge composting

Qian

et al. 2022

Waste Manag Res

View full text Add to dashboard Cite

Methane (CH4) emissions from sewage sludge composting can be reduced by using biochar more effectively. This study investigates the impact of different structure of biochar on CH4 emissions during sewage sludge composting. Corncob biochar (CB, pore size = 35.3990 nm), rice husk biochar (RB, pore size = 3.4242 nm) and wood biochar (WB, pore size = 1.6691 nm) were applied to the composting. The results showed that biochar decreased CH4 emissions, mainly through the indirect effect of improving the pile environment. Compared with the control group (CK), the biochars with smaller pore structures, WB and RB, reduced CH4 emissions by 41.83% and 33.59%, respectively, compared to only 8.20% for CB, which has a larger pore structure. In addition, RB and WB increased the free air space (FAS) by more than 10% and CB improved the microbial diversity. Methanothermobacter was reported in WB and RB, with an abundance of 45.45% in WB. Redundancy analysis (RDA) showed that pore size was positively correlated with the CH4 emission rate. The results of this study can provide a theoretical reference for CH4 reduction from biochar co-composting of sewage sludge.

show abstract

The influence of biochar and compost mixtures, water content, and gas flow rate, on the continuous adsorption of methane in a fixed bed column

Cited by 14 publications

References 36 publications

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Recent methods in the production of activated carbon from date palm residues for the adsorption of textile dyes: A review

Adsorption of methane on biochar for emission reduction in oil and gas fields

Impact of different structures of biochar on decreasing methane emissions from sewage sludge composting

Contact Info

Product

Resources

About