Biochar-based adsorbents for carbon dioxide capture: A critical review

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:119

Review

Dissanayake, Pavani Dulanja^1,9  You, Siming³  Igalavithana, Avanthi Deshani¹  Xia, Yinfeng⁴  Bhatnagar, Amit⁵  Gupta, Souradeep⁶  Kua, Harn Wei⁶  Kim, Sumin⁷  Kwon, Jung-Hwan²  Tsang, Daniel C. W.⁸  Ok, Yong Sik^1,10 

[1] Korea Univ, O Jeong Ecoresilience Inst, Korea Biochar Res Ctr, Seoul 02841, South Korea

[2] Korea Univ, Div Environm Sci & Ecol Engn, Seoul 02841, South Korea

[3] Univ Glasgow, Sch Engn, Glasgow, Lanark, Scotland

[4] Zhejiang Univ Water Resources & Elect Power, Coll Water Conservancy & Environm Engn, Hangzhou 310018, Peoples R China

[5] Univ Eastern Finland, Dept Environm & Biol Sci, POB 1627, FI-70211 Kuopio, Finland

[6] Natl Univ Singapore, Sch Design & Environm, Dept Bldg, 4 Architecture Dr, S-117566 Singapore, Singapore

[7] Yonsei Univ, Dept Architecture & Architectural Engn, Seoul 03722, South Korea

[8] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

[9] Coconut Res Inst, Soils & Plant Nutr Div, Lunuwila 61150, Sri Lanka

[10] Henan Agr Univ, Sch Forestry, Henan Prov Engn Res Ctr Biomass Value Added Prod, Zhengzhou 450002, Peoples R China

关键词: Black carbon;    CO2 capture;    Climate change;    Engineered biochar;    Greenhouse gas;   

DOI  :  10.1016/j.rser.2019.109582

来源: Elsevier

【 摘 要 】

Carbon dioxide (CO2) is the main anthropogenic greenhouse gas contributing to global warming, causing tremendous impacts on the global ecosystem. Fossil fuel combustion is the main anthropogenic source of CO2 emissions. Biochar, a porous carbonaceous material produced through the thermochemical conversion of organic materials in oxygen-depleted conditions, is emerging as a cost-effective green sorbent to maintain environmental quality by capturing CO2. Currently, the modification of biochar using different physico-chemical processes, as well as the synthesis of biochar composites to enhance the contaminant sorption capacity, has drawn significant interest from the scientific community, which could also be used for capturing CO2. This review summarizes and evaluates the potential of using pristine and engineered biochar as CO2 capturing media, as well as the factors influencing the CO2 adsorption capacity of biochar and issues related to the synthesis of biochar-based CO2 adsorbents. The CO2 adsorption capacity of biochar is greatly governed by physico-chemical properties of biochar such as specific surface area, microporosity, ammaticity, hydrophobicity and the presence of basic functional groups which are influenced by feedstock type and production conditions of biochar. Micropore area (R-2 = 0.9032, n = 32) and micropore volume (R-2 = 0.8793, n = 32) showed a significant positive relationship with CO2 adsorption capacity of biochar. These properties of biochar are closely related to the type of feedstock and the thermochemical conditions of biochar production. Engineered biochar significantly increases CO2 adsorption capacity of pristine biochar due to modification of surface properties. Despite the progress in biochar development, further studies should be conducted to develop cost-effective, sustainable biochar-based composites for use in large-scale CO2 capture.

【 授权许可】

Free