Xinyang Xu, Guangjian Fan, Xiaoxuan Zhu, Yu Huang, Xi Chen
{"title":"用玉米秸秆/香菇基质/硬木锯屑制成的 K2CO3 活性生物炭去除溶液中的铅和镉","authors":"Xinyang Xu, Guangjian Fan, Xiaoxuan Zhu, Yu Huang, Xi Chen","doi":"10.1007/s11270-024-07653-w","DOIUrl":null,"url":null,"abstract":"<div><p>The biochar (BC) pyrolyzed from corn straw (CS), spent mushroom substrate (SMS) and hardwood sawdust (HS), which are activated by K<sub>2</sub>CO<sub>3</sub>, were utilized for lead (Pb) and cadmium (Cd) sorption in solution. The effects of different pyrolysis factors on the Pb and Cd sorption capacities of three types of K<sub>2</sub>CO<sub>3</sub>-activated biochar (ABC) were analyzed. A series of characterization analyses were applied to compare the differences between various ABCs and to explore the Pb and Cd removal mechanisms. The results showed that the pyrolysis temperature, residence time and K<sub>2</sub>CO<sub>3</sub> concentration obviously affect the sorption capacity of all ABCs. According to characterization, SMS had a loosely porous structure, which might be more favorable for K<sub>2</sub>CO<sub>3</sub> activation. Furthermore, SMS possessed a rich elemental composition. Therefore, the pyrolysis product derived from SMS exhibited a larger specific surface area and higher polar functional group content, which might be the reason why ABCs synthesized from SMS exhibited better Pb and Cd sorption capacities than did ABCs synthesized from CS or HS. Moreover, the contributions of different Pb or Cd sorption mechanisms by different ABCs decreased as follows: mineral precipitation > cation exchange > complexation of oxygen-containing functional groups > π-bonding or physical sorption. Overall, the ABC synthesized from SMS was more suitable for Pb or Cd removal in solution, which also provided a new approach for the comprehensive utilization of SMS.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Removal of Lead and Cadmium from Solution by K2CO3 Activated Biochar Derived from Corn Straw/Spent Mushroom Substrate/Hardwood Sawdust\",\"authors\":\"Xinyang Xu, Guangjian Fan, Xiaoxuan Zhu, Yu Huang, Xi Chen\",\"doi\":\"10.1007/s11270-024-07653-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The biochar (BC) pyrolyzed from corn straw (CS), spent mushroom substrate (SMS) and hardwood sawdust (HS), which are activated by K<sub>2</sub>CO<sub>3</sub>, were utilized for lead (Pb) and cadmium (Cd) sorption in solution. The effects of different pyrolysis factors on the Pb and Cd sorption capacities of three types of K<sub>2</sub>CO<sub>3</sub>-activated biochar (ABC) were analyzed. A series of characterization analyses were applied to compare the differences between various ABCs and to explore the Pb and Cd removal mechanisms. The results showed that the pyrolysis temperature, residence time and K<sub>2</sub>CO<sub>3</sub> concentration obviously affect the sorption capacity of all ABCs. According to characterization, SMS had a loosely porous structure, which might be more favorable for K<sub>2</sub>CO<sub>3</sub> activation. Furthermore, SMS possessed a rich elemental composition. Therefore, the pyrolysis product derived from SMS exhibited a larger specific surface area and higher polar functional group content, which might be the reason why ABCs synthesized from SMS exhibited better Pb and Cd sorption capacities than did ABCs synthesized from CS or HS. Moreover, the contributions of different Pb or Cd sorption mechanisms by different ABCs decreased as follows: mineral precipitation > cation exchange > complexation of oxygen-containing functional groups > π-bonding or physical sorption. Overall, the ABC synthesized from SMS was more suitable for Pb or Cd removal in solution, which also provided a new approach for the comprehensive utilization of SMS.</p></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"236 1\",\"pages\":\"\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-11-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11270-024-07653-w\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-024-07653-w","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
The Removal of Lead and Cadmium from Solution by K2CO3 Activated Biochar Derived from Corn Straw/Spent Mushroom Substrate/Hardwood Sawdust
The biochar (BC) pyrolyzed from corn straw (CS), spent mushroom substrate (SMS) and hardwood sawdust (HS), which are activated by K2CO3, were utilized for lead (Pb) and cadmium (Cd) sorption in solution. The effects of different pyrolysis factors on the Pb and Cd sorption capacities of three types of K2CO3-activated biochar (ABC) were analyzed. A series of characterization analyses were applied to compare the differences between various ABCs and to explore the Pb and Cd removal mechanisms. The results showed that the pyrolysis temperature, residence time and K2CO3 concentration obviously affect the sorption capacity of all ABCs. According to characterization, SMS had a loosely porous structure, which might be more favorable for K2CO3 activation. Furthermore, SMS possessed a rich elemental composition. Therefore, the pyrolysis product derived from SMS exhibited a larger specific surface area and higher polar functional group content, which might be the reason why ABCs synthesized from SMS exhibited better Pb and Cd sorption capacities than did ABCs synthesized from CS or HS. Moreover, the contributions of different Pb or Cd sorption mechanisms by different ABCs decreased as follows: mineral precipitation > cation exchange > complexation of oxygen-containing functional groups > π-bonding or physical sorption. Overall, the ABC synthesized from SMS was more suitable for Pb or Cd removal in solution, which also provided a new approach for the comprehensive utilization of SMS.
期刊介绍：
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation.
Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
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