Dramatically increased CO2 concentration from several point sources is perceived to cause severe greenhouse effect towards the serious ongoing global warming with associated climate destabilization, inducing undesirable natural calamities, melting of glaciers, and extreme weather patterns. CO2 capture and utilization (CCU) has received tremendous attention due to its significant role in intensifying global warming. Considering the lack of a timely review on the state-of-the-art progress of promising CCU techniques, developing an appropriate and prompt summary of such advanced techniques with a comprehensive understanding is necessary. Thus, it is imperative to provide a timely review, given the fast growth of sophisticated CO2 capture and utilization materials and their implementation. In this work, we critically summarized and comprehensively reviewed the characteristics and performance of both liquid and solid CO2 adsorbents with possible schemes for the improvement of their CO2 capture ability and advances in CO2 utilization. Their industrial applications in pre- and post-combustion CO2 capture as well as utilization were systematically discussed and compared. With our great effort, this review would be of significant importance for academic researchers for obtaining an overall understanding of the current developments and future trends of CCU. This work is bound to benefit researchers in fields relating to CCU and facilitate the progress of significant breakthroughs in both fundamental research and commercial applications to deliver perspective views for future scientific and industrial advances in CCU.

Industrial carbon dioxide capture and utilization: state of the art and future challenges

Carbon dioxide (CO2) is the major contributor to greenhouse gas (GHG) emissions and the main driver of climate change. Currently, CO2 utilization is increasingly attracting interest in processes like enhanced oil recovery and coal bed methane and it has the potential to be used in hydraulic fracturing processes, among others. In this review, the latest developments in CO2 capture, utilization, conversion, and sequestration are examined through a multi-scale perspective. The diverse range of CO2 utilization applications, including mineralization, biological utilization, food and beverages, energy storage media, and chemicals, is comprehensively presented. We also discuss the worldwide research and development of CO2 utilization projects. Lastly, we examine the key challenges and issues that must be faced for pilot-scale and industrial applications in the future. This study demonstrates that CO2 utilization can be a driver for the future development of carbon capture and utilization technologies. However, considering the amount of CO2 produced globally, even if it can be reduced in the near-to mid-term future, carbon capture and storage will remain the primary strategy and, so, complementary strategies are desirable. Currently, the main CO2 utilization industry is enhanced oil and gas recovery, but considering the carbon life cycle, these processes still add CO2 to the atmosphere. In order to implement other CO2 utilization technologies at a large scale, in addition to their current technical feasibility, their economic and societal viability is critical. Therefore, future efforts should be directed toward reduction of energy penalties and costs, and the introduction of policies and regulation encouraging carbon capture, utilization and storage, and increasing the public acceptance of the strategies in a complementary manner.

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Recent advances in carbon dioxide utilization

This paper presents a comprehensive list of Carbon Capture and Utilization technologies and applications, ranging from lab-scale R&D activities reported in academic papers to commercially establish...

Carbon capture and utilization technologies: a literature review and recent advances

Pretreatment with 0.5 mM salicylic acid (SA) for 3 days significantly enhanced the growth and tolerance to subsequent drought stress (PEG-6000, 15%) in wheat seedlings, manifesting as increased shoot and root dry weights, and decreased lipid peroxidation. Total proteins from wheat leaves exposed to (i) 0.5 mM SA pretreatment, (ii) drought stress, and (iii) 0.5 mM SA treatment plus drought-stress treatments were analyzed using a proteomics method. Eighty-two stress-responsive protein spots showed significant changes, of which 76 were successfully identified by MALDI-TOF-TOF. Analysis of protein expression patterns revealed that proteins associated with signal transduction, stress defense, photosynthesis, carbohydrate metabolism, protein metabolism, and energy production could by involved in SA-induced growth and drought tolerance in wheat seedlings. Furthermore, the SA-responsive protein interaction network revealed 35 key proteins, suggesting that these proteins are critical for SA-induced tolerance.

Proteomics reveals the effects of salicylic acid on growth and tolerance to subsequent drought stress in wheat.

CO2 mineral carbonation using industrial solid wastes: A review of recent developments

Comparative study on N2O formation pathways over bulk MoO3 and MoO3-x nanosheets decorated Fe2O3-containing solid waste NH3-SCR catalysts

Insights into the Low-Temperature Nh3-Scr of No Performance and Mechanism Over Manganese Tailings-Derived Catalyst

Coal fly ash (CFA) is an industrial solid waste discharged from coal-fired power plants. Due to the high contents of aluminum and silicon, it can be direct used for synthesis of zeolites. In this study, cancrinite (CAN) type zeolite was prepared from CFA by a novel hot stuffy method. The effects of various parameters such as alkaline dosage, crystallization temperature and holding time on the formation of zeolite were studied systematically. A well-crystallized CAN type zeolite was synthesized after mixing CFA with NaOH in a mortar followed by hot stuffy at 140 °C for 4 h. The characterized results revealed that the CAN zeolite showed a solo mineral phase with typical porous surface and internal ring structure. The synthesized zeolite was used as an adsorbent to remove anionic acid from aqueous solution, exhibiting great adsorption performance with 98 % removal efficiency within 40 min. This study provided a facile alternative for efficient utilization of solid waste to produce high value-added zeolite, exhibiting great potential for industrial application. 

Facile and fast synthesis of cancrinite-type zeolite from coal fly ash by a novel hot stuffy route

Waste bamboo-derived activated carbon (BAC), biomass char (BBC), and nitric acid-modified BACN and BBCN supports as well as commercial activated carbon (AC) and corresponding ACN were prepared for comparative study. Their denitrification performance in 100–250 °C decreased as BACN > ACN > BBCN > BAC > AC > BBC. BACN and ACN were separately loaded with different MOx (M = Mn, Ce, Fe, Cu, V) by wet impregnation. M/BACN showed slightly higher NO conversion than corresponding M/ACN. Mn/BACN exhibited the best denitrification performance with NO conversion of 92% at 200 °C. The physicochemical properties of supports and catalysts were characterized by BET, SEM-EDS, FTIR, XRD, and XPS. The results suggested that BAC was most sensitive to HNO3 modification, thereby BACN possessed much more surface functional groups. This was the main reason for BACN exhibiting the best denitrification performance among the supports. Loading metal oxides introduced more strong active sites sharply increasing the catalytic activity, even though decreased the surface area and decomposed a few surface functional groups. Mn/BACN mainly followed the L–H mechanism at low temperature. Rich surface functional groups on BACN could promote the adsorption and activation of NH3 and NO accelerating the reaction in L–H mechanism.

Weizao Liu

Papers

Comparative study on N2O formation pathways over bulk MoO3 and MoO3-x nanosheets decorated Fe2O3-containing solid waste NH3-SCR catalysts

Insights into the Low-Temperature Nh3-Scr of No Performance and Mechanism Over Manganese Tailings-Derived Catalyst

Facile and fast synthesis of cancrinite-type zeolite from coal fly ash by a novel hot stuffy route

Comparative study on the physicochemical properties and de-NOx performance of waste bamboo-derived low-temperature NH3-SCR catalysts

A novel conversion of Ti-bearing blast furnace slag into Ti-containing zeolites: Comparison study between FAU and MFI type zeolites