scholarly journals THE ASSESSMENT OF CARBON DIOXIDE (CO2) ADSORPTION AND SPATIAL BIOMASS DISTRIBUTION MAPPING IN THE RESERVOIR OF HINBOUN HYDROPOWER PROJECT

2021 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Adsorption ◽  
Hydropower Project ◽  
Biomass Distribution ◽  
Distribution Mapping ◽  
Carbon Dioxide Co2

scholarly journals Upgrading of Biogas to Methane Based on Adsorption

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 941
Author(s):  
Jun Liu ◽  
Qiang Chen ◽  
Peng Qi
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Adsorption Capacity ◽  
Co2 Adsorption ◽  
Anaerobic Fermentation ◽  
Biogas Yield ◽  
13X Zeolite ◽  
Low Co2 ◽  
Co2 Adsorption Capacity ◽  
Carbon Dioxide Co2

Upgrading raw biogas to methane (CH4) is a vital prerequisite for the utilization of biogas as a vehicle fuel or the similar field as well. In this work, biogas yield from the anaerobic fermentation of food waste containing methane (CH4, 60.4%), carbon dioxide (CO2, 29.1%), hydrogen sulfide (H2S, 1.5%), nitrogen (N2, 7.35%) and oxygen (O2, 1.6%) was upgraded by dynamic adsorption. The hydrogen sulfide was removed from the biogas in advance by iron oxide (Fe2O3) because of its corrosion of the equipment. Commercial 13X zeolite and carbon molecular sieve (CMS) were used to remove the other impurity gases from wet or dry biogas. It was found that neither 13X zeolite nor CMS could effectively remove each of the impurities in the wet biogas for the effect of water vapor. However, 13X zeolite could effectively remove CO2 after the biogas was dried with silica and showed a CO2 adsorption capacity of 78 mg/g at the condition of 0.2 MPa and 25 °C. Additionally, 13X zeolite almost did not adsorb nitrogen (N2), so the CH4 was merely boosted to ac. 91% after the desulfurated dry biogas passed through 13X zeolite, nitrogen remaining in the biogas. CMS would exhibit superior N2 adsorption capacity and low CO2 adsorption capacity if some N2 was present in biogas, so CMS was able to remove all the nitrogen and fractional carbon dioxide from the desulfurated dry biogas in a period of time. Finally, when the desulfurated dry biogas passed through CMS and 13X zeolite in turn, the N2 and CO2 were sequentially removed, and then followed the high purity CH4 (≥96%).

Optimization study on preparation of amine functionalized sea mango (cerbera odollam) activated carbon for Carbon Dioxide (CO2) adsorption

2018 ◽  
Vol 190 (7) ◽  
pp. 1259-1282 ◽  
Author(s):  
Umi Fazara Md Ali ◽  
Nur Hidayah Azmi ◽  
Khairuddin Md Isa ◽  
Mohamed Kheireddine Aroua ◽  
Tan Ru Shien ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Activated Carbon ◽  
Co2 Adsorption ◽  
Amine Functionalized ◽  
Optimization Study ◽  
Carbon Dioxide Co2

Carbon Dioxide Capture at Various Temperatures Using Ca(OH)2 Sorbent Fabricated by Sol-Gel Route in Ethanol Media

2014 ◽  
Vol 1024 ◽  
pp. 35-38
Author(s):  
Farah Diana Mohd Daud ◽  
Srimala Sreekantan ◽  
Abdul Rahman Mohamed
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Co2 Adsorption ◽  
Sol Gel ◽  
Morphological Properties ◽  
Before And After ◽  
Different Temperatures ◽  
Carbon Dioxide Co2 ◽  
Co2 Capture Capacity ◽  
Double Hydroxides

Carbon dioxide (CO2) is considered to be the main greenhouse gas contributing to global warming and climate change. Therefore, the present paper investigates the CO2-capture performance of synthesized calcium hydroxides, Ca(OH)2 sorbent at different temperatures which are 350, 450, 550 and 650°C. The CO2 adsorption of the materials synthesized was studied in a thermo-gravimetric analyzer (TGA). The CO2 adsorption temperature strongly influenced the capture performance of the absorbent. The Ca(OH)2 sorbent are prepared by hydrolysis of calcium alkoxides, NaOH as precipitating agent and mixed solvent of ethanol with deionized (DI) water as medium at 35°C. X- ray diffraction (XRD) result showed 40 nm crystallite size of Ca(OH)2 hexagonal crystal structures. The Ca(OH)2 particle size and morphological properties before and after CO2 adsorption are studied by Field Emission Scanning Electron Microscopy (FESEM). The FESEM image indeed showed the rod like shape of Ca(OH)2 structures with rod length increased from 765 to 893 nm while the diameter is between 140 to 160 nm. When Ca(OH)2 sorbent adsorbed CO2, the structures are rigid interconnected each others like a lump shaped. The prepared Ca(OH)2 sorbent possesses a great potential to capture CO2 when increased temperature. Nevertheless, at intermediate temperatures (350-450°C), Ca(OH)2 sorbent still demonstrates a higher CO2 capture capacity than other intermediate temperature adsorbents such as layered double hydroxides (LDHs), lithium zirconates (LiZrO3) and hydrotalcites.

A promising process to modify cellulose nanofibers for carbon dioxide (CO2) adsorption

2020 ◽  
Vol 230 ◽  
pp. 115571 ◽  
Author(s):  
Sima Sepahvand ◽  
Mehdi Jonoobi ◽  
Alireza Ashori ◽  
Florent Gauvin ◽  
H.J.H Brouwers ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Adsorption ◽  
Cellulose Nanofibers ◽  
Carbon Dioxide Co2

Development of poly vinyl alcohol (PVA) based biochar nanofibers for carbon dioxide (CO2) adsorption

2022 ◽  
Vol 157 ◽  
pp. 112019
Author(s):  
Noor Haleem ◽  
Alishba Khattak ◽  
Yousuf Jamal ◽  
Masooma Sajid ◽  
Zainab Shahzad ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Vinyl Alcohol ◽  
Co2 Adsorption ◽  
Poly Vinyl Alcohol ◽  
Carbon Dioxide Co2

PERANCANGAN PROTEKSI KEBAKARAN OTOMATIS PADA KAPAL BERBASIS ARDUINO

2018 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Dody Hidayat
Keyword(s):  
Carbon Dioxide ◽  
Fire Extinguisher ◽  
Carbon Dioxide Co2

Kebakaran dapat terjadi dimana saja salah satunya dapat terjadi di alat transportasi air yakni kapal. Kebakaran selalu menyebabkan hal-hal yang tidak diinginkan baik kerugian material maupun ancaman keselamatan jiwa manusia. Seiring dari kejadian tersebut musibah kecelakaan kapal yang disebabkan oleh bahaya kebakaran sangatlah mungkin terjadi. Salah satu yang dapat mencegah kejadian kebakaran pada kapal haruslah dapat mendeteksi dini kebakaran tersebut. Untuk mendeteksi dini terjadinya kebakaran dikapal maka dirancanglah sebuah alat proteksi kebakaran otomatisberbasis adruino. Dimana Arduino merupakan board yang memiliki sebuah mikrokontroller sebagai  otak kendali sistem. Sistem otomatisasi atau controller tidak akan terlepas dengan apa yang disebut  dengan ‘sensor’. Sensor adalah sebuah alat untuk mendeteksi atau mengukut sesuatu yang digunakan untuk mengubah variasi mekanis, magnetis, panas, sinar dan kimia menjadi tegangan dan arus listrik. sistem yang dirancang ini dilengkapi dengan beberapa sensor diantaranya adalah sensor apiUV-Tron R2868, sensor asap MQ-2 dan kemudian sensor suhuDS18B20. Mikrokontroller sebagai pengendali akan merespon input yang berupa sensor tersebut ketika data yang dibaca oleh sensor mendeteksikebakaran diantaranya mendeteksi adanya asap, kemudian api dan suhu. Sebagai output dari sistem berupa racun api (fire extinguisher)dimana kandungan yang ada pada racun api tersebut berupa Dry Chemical Powder dan Carbon Dioxide (CO2) yang fungsinya digunakan untuk memadamkan api serta dilengkapi buzzer sebagai alarm peringatan jika terjadi kebakaran. 

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