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Sludge-based biochar adsorbent:pore tuning mechanisms,challenges,and role in carbon sequestration

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Biochar 2023年第1期5卷 1419-1441页

作者： Md Manik Mian Wenya Ao Shubo Deng State Key Joint Laboratory of Environment Simulation and Pollution Control(SKLESPC) Beijing Key Laboratory for Emerging Organic Contaminants ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China

Sludge biochar,a carbonized product of raw sludge,contains porous architectures that can act as epicenters for adsorbing external molecules through physical or chemical *** biochar also immobilizes innate micropollutants,which is advantageous over conventional sludge disposal *** date,numerous strategies have been discovered to improve sludge biochar morphology,but the influential factors,pore tuning mechanisms,and process feasibility remain *** knowledge gap limits our ability to design a robust sludge-based ***,we present state-of-the-art sludge biochar synthesis methods with insight into structural and chemical transformation *** and novel concepts for improving sludge biochar porous architecture are *** the first time,sludge biochar properties,adsorption performances,and techno-economic perspectives were compared with commercial activated carbon(AC)to reveal the precise challenges in sludge biochar *** importantly,sludge biochar role in carbon sequestration is detailed to demonstrate the environmental significance of this ***,the review concludes with an overview of prospects and an outlook for developing sludge biochar-based research.

关键词： Sludge-based adsorbent Micropores Feasible methods Challenges carbon sequestration

Differences in CO_(2)-Water-Rock Chemical Reactions among ’Sweet Spot’ Reservoirs:Implications for carbon sequestration

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地质学报:英文版 2023年第3期97卷 972-985页

作者： YANG Leilei SONG Ziyang LIU Yi WEI Guo ZHANG Xing MO Chenchen FENG Bo LI Yaohua College of carbon-Neutral Energy China University of Petroleum(Beijing)Beijing 102249China National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China Unconventional Petroleum Research Institute China University of Petroleum(Beijing)Beijing 102249China Petroleum Institute China University of Petroleum-Beijing at KaramayKaramayXinjiang 834000China College of Artificial Intelligence China University of Petroleum(Beijing)Beijing 102249China Key Laboratory of Groundwater Resources and Environment Ministry of EducationJilin UniversityChangchun 130021China Oil and Gas Survey China Geological SurveyBeijing 100083China

The Lucaogou Formation,located in the Jimsar Sag,Junggar Basin,NW China,has great potential for shale oil *** the process of CO_(2)-EOR(CO_(2) enhance oil recovery),mineral dissolution,precipitation and transformation,leading to the local corrosion or blockage of reservoirs,have a significant influence on *** this study,a combination of high-temperature and high-pressure laboratory experiments and coupled temperature/fluid-chemistry multifield numerical simulations are used to investigate CO_(2)-water-rock reactions under various reservoir conditions in the upper and lower ’sweet spots’,to reveal the mechanisms underlying CO_(2)-induced mineral dissolution,precipitation and *** addition,we quantitatively calculated the evolution of porosity over geological timescales;compared and analyzed the variability of CO_(2) transformation in the reservoir under a variety of temperature,lithology and solution conditions;and identified the main factors controlling CO_(2)-water-rock reactions,the types of mineral transformation occurring during long-term CO_(2) sequestration and effective carbon sequestration *** results demonstrate that the main minerals undergoing dissolution under the influence of supercritical CO_(2) are feldspars,while the main minerals undergoing precipitation include carbonate rock minerals,clay minerals and *** minerals,especially the initially abundant plagioclase in the formation,directly affects total carbon sequestration,feldspar-rich clastic rocks therefore having considerable sequestration potential.

关键词： CO_(2) water-rock reactions mineral transformation carbon sequestration

Effects of management regimes on carbon sequestration under the Natural Forest Protection Program in northeast China

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Journal of Forestry Research 2018年第5期29卷 1187-1194页

作者： Linhai Jiang Wei Zhao Bernard J.Lewis Yawei Wei Limin Dai State Key Laboratory of Forest and Soil Ecology Institute of Applied Ecology Chinese Academy of SciencesShenyang 110164 People's Republic of China University of Chinese Academy of Sciences Beijing 100101People's Republic of China Department and Research Center of the State Post Bereau Beijing 100000 People's Republic of China Dalian Institute of Software and Service Outsourcing Dalian 106000 People's Republic of China Shenyang Agricultural University Shenyang 110000People's Republic of China

carbon sinks constitute an important element within the complex phenomenon of global climate change,and forest ecosystems are important global carbon *** Natural Forest Protection Program（NFPP） is an ecological program in China that was established after catastrophic flooding in the country in *** goals of the NFPP are to curb the deterioration of the ecological environment,strengthen the protection and restoration of habitat to increase biodiversity,and rehabilitate natural forests to support sustainable development in forest *** study looked at changes in carbon sequestration in a forested area of northeast China after the inception of the *** program divides China＇s natural forests into three classes—commercial and two types of noneconomic forests—that are subject to management regimes prescribing varying levels of timber harvest,afforestation,and *** the 18-year period from 1998 to 2015,the total amount of carbon sequestration increased at an average annual rate of 0.04 MT *** trend reflects a transformation of forest management practices after implementation of the NFPP that resulted in prohibited and/or restricted logging and tighter regulation of allowable harvest levels for specific *** documenting this trend,guidelines for more effective implementation of forestry programs such as the NFPP in other countries in the future are also suggested.

关键词： Natural Forest Protection Program(NFPP) carbon sequestration San Chazi Forestry Bureau China forestry

Simulating carbon sequestration and GHGs Emissions in Abies fabric Forest on the Gongga Mountains Using a Biogeochemical Process Model Forest-DNDC

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Journal of Mountain Science 2008年第3期5卷 249-256页

作者： LU Xuyang CHENG Genwei XIAO Feipeng HUO Changfu Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

The process-oriented model Forest-DNDC describing biogeochemical cycling of C and N and GHGs （greenhouse gases） fluxes （CO2, NO and N2O） in forest ecosystems was applied to simulate carbon sequestration and GHGs emissions in Abies fabric forest of the Gongga Mountains at southeastern edge of the Tibetan Plateau. The results indicated that the simulated gross primary production （GPP） of Abies fabric forest was strongly affected by temperature. The annual total GPP was 24,245.3 kg C ha^-1 yr^-1 for 2005 and 26,318.8 kg C ha^-1 yr^-1 for 2006, respectively. The annual total net primary production （NPP） was 5,935.5 and 4,882.2 kg C ha^-1 yr^-1 for 2005 and 2006, and the annual total net ecosystem production （NEP） was 4,815.4 and 3,512.8 kg C ha^-1 yr^-1 for 2005 and 2006, respectively. The simulated seasonal variation in CO2 emissions generally followed the seasonal variations in temperature and precipitation. The annual total CO2 emissions were 3,109.0 and 4,821.0 kg C ha^-1 yr^-1 for 2005 and 2006, the simulated annual total N2O emissions from forest soil were 1.47 and 1.36 kg N ha^-1 yr^-1 for 2005 and 2006, and the annual total NO emissions were 0.09 and o.12 kg N ha^-1 yr^-1 for 2005 and 2006, respectively.

关键词： carbon sequestration Forest-DNDC GHGs Abiesfabric forest Gongga Mountains

Prioritizing woody species for the rehabilitation of arid lands in western Iran based on soil properties and carbon sequestration

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Journal of Arid Land 2020年第4期12卷 640-652页

作者： Masoud BAZGIR Reza OMIDIPOUR Mehdi HEYDARI Nasim ZAINALI Masoud HAMIDI Daniel C DEY Department of Water and Soil Engineering Faculty of AgricultureIlam UniversityIlam ***Iran Department of Range and Watershed Management Faculty of Natural Resource and Earth ScienceShahrekord UniversityShahrekord ***Iran Department of Forestry Faculty of AgricultureIlam UniversityIlam ***Iran US Forest Service Northern Research StationColumbiaOM 65211USA

Plants are an important component in many natural ecosystems. They influence soil properties, especially in arid ecosystems. The selection of plant species based on their adaptations to site conditions is essential for rehabilitation of degraded sites and other construction sites such as check-dams. Other factors to be considered in species selection include their effects on soil properties and their abilities to meet other management objectives. The purpose of this study was to assess the effects of native(Populus euphratica Oliv. and Tamarix ramosissima Ledeb.) and introduced(Eucalyptus camaldulensis Dehnh. and Prosopis juliflora(Swartz) DC.) woody species on soil properties and carbon sequestration(CS) in an arid region of Iran. Soil sampling was collected at three soil depths(0–10, 10–20 and 20–30 cm) at the sites located under each woody species canopy and in an open area in 2017. Soil physical-chemical property was analyzed in the laboratory. The presence of a woody species changed soil characteristics and soil CS, compared with the open area. For example, the presence of a woody species caused a decrease in soil bulk density, of which the lowest value was observed under E. camaldulensis(1.38 g/cm^3) compared with the open area(1.59 g/cm^3). Also, all woody species significantly increased the contents of soil organic matter and total nitrogen, and introduced species had more significant effect than native species. The results showed that CS significantly increased under the canopy of all woody species in a decreasing order of P. euphratica(9.08 t/hm^2)>E. camaldulensis(8.37 t/hm^2)>P. juliflora(5.20 t/hm^2)>T. ramosissima(2.93 t/hm^2)>open area(1.33 t/hm^2), thus demonstrating the positive effect of a woody species on CS. Although the plantation of non-native species had some positive effects on soil properties, we recommend increasing species diversity in plantations of native and introduced woody species to provide more diversity for the increased ecosystem

关键词： arid ecosystem carbon sequestration degraded soil restoration reforestation soil management

Potential of conservation tillage and altered land configuration to improve soil properties,carbon sequestration and productivity of maize based cropping system in eastern Himalayas,India

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International Soil and Water Conservation Research 2021年第2期9卷 279-290页

作者： Gulab Singh Yadav Anup Das Subhash Babu Kamal Prasad Mohapatra Rattan Lal Dipjyoti Rajkhowa Indian Council of Agricultural Research(ICAR) Research Complex for North Eastern HillRegionTripura CentreTripuraIndia ICAR eIndian Agricultural Research Institute New DelhiIndia ICAR-National Bureau of Plant Genetic Resources New DelhiIndia carbon Management and sequestration Center Ohio State UniversityColumbusUSA ICAR Research Complex for NEH Region Nagaland CentreNagalandIndia

Poor soil properties especially low soil organic carbon(SOC)and nutrient and water retention capacities are major concern for sustainable agriculture in *** experiments were conducted to assess the effects of six combinations of tillage[conventional tillage(CT)and no-till(NT)]and land configurations[flat bed planting(FB),ridge and furrow planting(RF),and raised bed planting(RB)]on productivity and carbon(C)-sequestration potential of maize[(Zea mays L.)for green-cob in summer]-maize(for grains in rainy season)-field pea[(Pisum sativum *** winter]cropping system under humid mildtropical climate of Tripura,*** maize under NT-FB in 2012 and NT-RF in 2013 produced significantly higher green cob yield than that under ***,in rainy season,CT produced higher maize grain yield than NT *** pea seed yield was significantly the highest under *** two cropping cycles,NT systems had higher available N,P,K and 18.6e31.4%higher soil moisture content after rainy season maize than CT *** highest SOC-stock(0e30 cm)was observed under NT-FB,whereas,SOC-sequestration rate was maximum under NT-RB(0.85 Mg ha1 year1).Therefore,NT based systems can enhance the productivity and improve SOC-sequestration in cultivated soils of eastern ***,study recommended adoption of NT-RB/NT-FB to raise maize-maize-field pea system for improving productivity,improving C-sequestration and soil properties in the eastern Himalayas and similar eco-regions elsewhere.

关键词： Soil fertility carbon sequestration Soil moisture Low productivity Hill ecosystem

Spatio-temporal variations in organic carbon density and carbon sequestration potential in the topsoil of Hebei Province, China

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Journal of Integrative Agriculture 2016年第11期15卷 2627-2638页

作者： CAO Xiang-hui LONG Huai-yu LEI Qiu-liang LIU Jian ZHANG Ji-zong ZHANG Wen-ju WU Shu-xia Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Pasture Systems and Watershed Management Research Unit USDA-Agricultural Research ServiceUniversity Park

Reliable prediction of soil organic carbon（SOC） density and carbon sequestration potential（CSP） plays an important role in the atmospheric carbon dioxide budget. This study evaluated temporal and spatial variation of topsoil SOC density and CSP of 21 soil groups across Hebei Province, China, using data collected during the second national soil survey in the 1980 s and during the recent soil inventory in 2010. The CSP can be estimated by the method that the saturated SOC content subtracts the actual SOC associated with clay and silt. Overall, the SOC density and CSP of most soil groups increased from the 1980 s to 2010 and varied between different soil groups. Among all soil groups, Haplic phaeozems had the highest SOC density and Endogleyic solonchaks had the largest CSP. Areas of soil groups with the highest SOC density（90 to 120 t C ha^（–1）） and carbon sequestration（120 to 160 t C ha^（–1）） also increased over time. With regard to spatial distribution, the north of the province had higher SOC density but lower CSP than the south. With respect to land-use type, cultivated soils had lower SOC density but higher CSP than uncultivated soils. In addition, SOC density and CSP were influenced by soil physicochemical properties, climate and terrain and were most strongly correlated with soil humic acid concentration. The results suggest that soil groups（uncultivated soils） of higher SOC density have greater risk of carbon dioxide emission and that management should be aimed at maximizing carbon sequestration in soil groups（cultivated soils） with greater CSP. Furthermore, soils should be managed according to their spatial distributions of SOC density and carbon sequestration potential under different soil groups.

关键词： carbon sequestration SOC density spatial variation topsoil

Impacts of Climate and Nutrients on carbon sequestration Rate by Wetlands: A Meta-analysis

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Chinese Geographical Science 2020年第3期30卷 483-492页

作者： CHENG Caifeng LI Min XUE Zhenshan ZHANG Zongsheng LYU Xianguo JIANG Ming ZHANG Hongri College of Geomatics Shandong University of Science and TechnologyQingdao 266590China Northeast Institute of Geography and Agroecology Chinese Academy of ScienceChangchun 130024China

Global numerous wetlands are the most productive ecosystem and have high carbon sequestration potential to mitigate increasing CO2 in the atmosphere. However, few are available on estimating average carbon sequestration rates by global wetlands(carbonsq) at century timescale. In this article, carbonsq data of 473 wetland soil/sediment cores from the literatures were collected in detail by the meta-analysis method. These cores were no more than 300 years old and spanned a latitudinal range from 33.6° S to 69.7° N. Globally, the average carbonsq was 185.2 g/(m^2·yr) regardless of wetland types. carbonsq varied remarkably between wetland types and ranked as an order of salt marsh(247.7 g/(m^2·yr)) > mangrove(229.8 g/(m^2·yr)) > freshwater marsh(196.7 g/(m^2·yr)) > peatland(76.9 g/(m^2·yr)). carbonsq was positively related to mean annual temperature(AMT) and annual precipitation(Pre). Nitrogen was the most common and primary factor controlling carbonsq regardless of wetland types.

关键词： global wetlands carbon sequestration temperature and precipitation nutrient phosphorus

carbon stock and rate of carbon sequestration in Dipterocarpus forests of Manipur,Northeast India

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Journal of Forestry Research 2015年第2期26卷 315-322页

作者： L.Supriya Devi P.S.Yadava Department of Life Sciences Manipur University

We examined the carbon stock and rate of carbon sequestration in a tropical deciduous forest dominated by Dipterocarpus tuberculatus in Manipur,North East *** of aboveground biomass was determined by harvest method and multiplied with density of tree *** aboveground biomass was between18.27–21.922 t ha-1and the carbon stock ranged from9.13 to 10.96 t C ha-1across forest *** biomass and carbon stock increased with the increase in tree *** rate of carbon sequestration varied from1.4722 to 4.64136 t ha-1year-1among the dominant tree species in forest stands in tropical deciduous forest *** rate of carbon sequestration depends on species composition,the density of large trees in different girth classes,and anthropogenic disturbances in the present forest *** work is required to identify tree species having the highest potential to sequester CO2 from the atmosphere,which could lead to recommendations for tree plantations in a degraded ecosystem.

关键词： carbon budget carbon sequestration Dipterocarpus Biomass Net production