Dataset Information

Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon.

ABSTRACT: The present work investigated the application of granular activated carbon (GAC) derived from date palm pits (DPP) agricultural waste for treating gaseous ammonia. Respective findings indicate increased breakthrough time (run time at which 5% of influent ammonia is exiting with the effluent gas) with a decrease in influent ammonia and increase in GAC bed depth. At a gas flow rate of 1.1 L/min and GAC column length of 8 cm, the following breakthrough trend was noted: 1295 min (2.5 ppmv) > 712 min (5 ppmv) > 532 min (7.5 ppmv). A qualitatively similar trend was also noted for the exhaustion time results (run time at which 95% of influent ammonia is exiting with the effluent gas). The Fourier Transform Infrared Spectroscopy (FTIR) findings for the produced GAC indicated some salient functional groups at the produced GAC surface including O-H, C-H, C-O, and S=O groups. Ammonia adsorption was suggested to result from its interaction with the respective surface functional groups via different mechanisms. Comparison with a commercial GAC showed the date palm pits based GAC to be having slightly higher breakthrough and exhaustion capacity.

SUBMITTER: Vohra M

PROVIDER: S-EPMC7084576 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon.

Vohra Muhammad M

International journal of environmental research and public health 20200227 5

The present work investigated the application of granular activated carbon (GAC) derived from date palm pits (DPP) agricultural waste for treating gaseous ammonia. Respective findings indicate increased breakthrough time (run time at which 5% of influent ammonia is exiting with the effluent gas) with a decrease in influent ammonia and increase in GAC bed depth. At a gas flow rate of 1.1 L/min and GAC column length of 8 cm, the following breakthrough trend was noted: 1295 min (2.5 ppmv) > 712 min ...[more]

PMID: 32120871

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Project description:Currently, comparisons between biochar and activated carbon in terms of performance, environmental impacts as well as financial implications are limited. In this study, biochar sourced from date palm waste were analysed using gate-to-grave life cycle assessment approach and results were compared to activated carbon derived from woody biomass. Simapro 8.5 software was used to quantitatively simulate the environmental impacts of both adsorbents. Date palm waste biochar and activated carbon global warming potentials (GWPs) were found to be 1.53 and 8.96 kg CO2eq/kg respectively. The cumulative energy demand (CED) for producing date palm waste biochar was found to be 20.3 MJ/kg, whereas, activated carbon resulted in 119.5 MJ/kg. Both adsorbents’ performance in terms of adsorption capacity were compared, and it was found that biochar is comparable with activated carbon. The economic performance demonstrated that the average cost of production of date palm waste biochar and activated carbon were $1.06/kg and $1.34/kg, respectively. Sensitivity analysis showed that when the source of energy was changed to renewable energy, a CED dropped to 105.2 MJ/kg and 7.68 MJ/kg, a GWP dropped to 7.29 kg CO2 eq. and 0.665 kg CO2 eq. and production costs dropped to $1.30 and to $1.04 for producing activated carbon and biochar respectively. Based on the results of the study, date palm waste biochar is more cost-effective, shows less environmental impact, and has comparable adsorption efficiency as compared to activated carbon. Graphical abstract Image 1 Highlights • Biochar GWP was 2.36 kg CO2eq/kg and activated carbon GWP was 8.34 kg CO2eq/kg.• Biochar CED was 20.3 MJ/kg and activated carbon CED was 119.5 MJ/kg.• Adsorption capacities of biochar were comparable with activated carbon.• Production cost of biochar was $1.06/kg and activated carbon was $1.34/kg.• Sensitivity analysis showed that switching solar energy reduced CED and GWP. Adsorption capacity; environmental impact; disposal; cost efficiency; sensitivity analysis.

Dataset Information

Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon.

Publications

Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon.

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