High surface area porous carbons prepared from hydrochars by phosphoric acid activation

Wang, Lili; Guo, Yupeng; Bo, Zhishan; Rong, Chunguang; Ma, Xiaoyu; Qu, Yuning; Liu, Ying; Wang, Zichen

doi:10.1016/j.biortech.2010.08.100

Cited by 152 publications

(57 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results indicated that BET surface area and total pore volumes of activated carbon reached a maximum value of 2192 m 2 /g and 1.269 cm 3 /g for the activation time of 1 h. Then, the BET surface area and total pore volume decreased to 1615 m 2 /g and 0.95 cm 3 /g when the activation time was prolonged to 4 h. This could have been explained by the excessive time that led to the contraction and collapse of pores, thus the surface area and pore volume became smaller (Wang et al 2011). The effect of activation time on activated carbons was also reported by Castro et al (2000), that prolongation of activation time beyond 1 h led to a pronounced reduction in porosity development.…”

Section: Effect Of Activation Time On Surface Area and Pore Volumementioning

confidence: 90%

Preparation and Characterization of Activated Carbon from Hydrochar by Phosphoric Acid Activation and its Adsorption Performance in Prehydrolysis Liquor

Chen¹,

Zhang²,

Yang³

et al. 2017

BioResources

View full text Add to dashboard Cite

Section: Effect Of Activation Time On Surface Area and Pore Volumementioning

confidence: 90%

Preparation and Characterization of Activated Carbon from Hydrochar by Phosphoric Acid Activation and its Adsorption Performance in Prehydrolysis Liquor

Chen¹,

Zhang²,

Yang³

et al. 2017

BioResources

View full text Add to dashboard Cite

“…As seen from the patterns of PR and APR, the peak at around 22 o is ascribed to amorphous silica (Song et al 2012). The peak at about 44 o of APR is assigned to the (100) plane, indicating the localized graphitization of the structure (Wang et al 2011). This is because of the decrease in the nonparallel single layers and some edge orientation in the CO2 activation (Wang et al 2009).…”

Section: Characterization Resultsmentioning

confidence: 86%

Preparation of Activated Carbon from Pyrolyzed Rice Husk by Leaching out Ash Content after CO2 Activation

Zhu

2016

BioResources

View full text Add to dashboard Cite

To prepare activated carbons with a high porosity and low ash content from pyrolyzed rice husk, the method of KOH or K2CO3 solution leaching after CO2 activation was investigated. The effects of KOH or K2CO3 concentration and leaching time on the yield, ash content, and textural properties of the activated carbon were studied, and the activated carbon prepared under the best conditions was characterized. The results showed that the best leaching time was 1 h for KOH and K2CO3, and the best concentrations were 1.0 and 4.0 M, respectively. The leaching process was greatly beneficial to the development of the pore structure. The specific surface area of the activated carbon prepared under the most favorable conditions was approximately 1100 m 2 /g, and the iodine values were greater than 1100 mg/g. As a result of the leaching process, the ash content of the sample was notably decreased from 63% to approximately 5%, and the porosity development was attributed to the reaction of the leaching reagents with silica.

show abstract

“…[18]. Prirodni materijali kao što su pirinač [19], banana i kokosovo vlakno [20], palmino ulje [21] su se koristili kao prekursori za dobijanje ugljenika. Struktura poroznog ugljenika se može kontrolisati na različite načine, kao što su: uslovi aktivacije (sredstvo aktivacije, temperatura i vreme), vrsta perkursora i itd.…”

Section: Uvodunclassified

Adsorpcija Metilenskog Plavog Na Aktivnom Ugljeniku Dobijenom Od Ploda Platana

Dodevski¹,

Kaluđerović²,

Krstić³

et al. 2017

JEPM

View full text Add to dashboard Cite

UVODBoje se sastoje od molekula koji teško biološki degradiraju. Sa sve većim korišćenjem širokog spektra boja, zagađenje od boja otpadnih voda postaje veće i alarmantnije. Većina boja se raspadaju dajući opasne proizvode, kao što su ugljen monoksid, ugljen dioksid i hloridi vodonika koji redukuju prodor svetlosti fotosinteze [1]. Štaviše boje po sebi su same toksične u živom organizmu. Metilen plavo boja je katjonska boja koja ima različite primene u hemiji, biologiji, medicini i u bojnoj industriji. Široku primenu u prečišćavanju zagađenih površinskih, podzemnih i industrijskih voda ima komercijalni aktivni ugalj kao adsorbent. Karakteristiku dobrog adsorbenta ima zbog velike specifične površine, raspodele pora kao i sposobnosti da neselektivno u značajnoj meri adsorbuje mnoge štetne sastojke iz zagađene vode [2,3]. Aktivni ugalj se može proizvesti iz velikog broja prekursora (polaznih materijala), uključujući drvo, treset, kokosovu ljusku, poljoprivredni otpad, sintetičke smole i itd. [4]. Prekursori su izloženi različitim metodama aktiviranja kao što su fizička i hemijska u pokušaju da se dobije aktivni ugalj sa visokim stepenom adsorpcije za određenu primenu. Zbog velikog zagađenja javila se potreba za uklanjanjem i smanjivanjem zagađenja. Akcenat je stavljen na adsorpcionu tehniku. Agencija za zaštitu prirodne sredine (USEPA) navela je aktivni ugalj kao jedno od najboljih sredstava za kontrolu životne zagađeno

show abstract

High surface area porous carbons prepared from hydrochars by phosphoric acid activation

Cited by 152 publications

References 20 publications

Preparation and Characterization of Activated Carbon from Hydrochar by Phosphoric Acid Activation and its Adsorption Performance in Prehydrolysis Liquor

Preparation and Characterization of Activated Carbon from Hydrochar by Phosphoric Acid Activation and its Adsorption Performance in Prehydrolysis Liquor

Preparation of Activated Carbon from Pyrolyzed Rice Husk by Leaching out Ash Content after CO2 Activation

Adsorpcija Metilenskog Plavog Na Aktivnom Ugljeniku Dobijenom Od Ploda Platana

Contact Info

Product

Resources

About