Effects of organic acids on Cd adsorption and desorption by two anthropic soils

Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studi...
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Autor*in:	Wang, Jingui [verfasserIn] Lv, Jialong Fu, Yaolong

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2012

Schlagwörter:	adsorption desorption cadmium organic acids temperature anthropic soil

Anmerkung:	© Higher Education Press and Springer-Verlag Berlin Heidelberg 2013

Übergeordnetes Werk:	Enthalten in: Frontiers of environmental science & engineering in China - Beijing : Higher Education Press, 2007, 7(2012), 1 vom: 14. Juni, Seite 19-30
Übergeordnetes Werk:	volume:7 ; year:2012 ; number:1 ; day:14 ; month:06 ; pages:19-30

Links:	Volltext

DOI / URN:	10.1007/s11783-012-0424-9

Katalog-ID:	SPR022394648

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allfields	10.1007/s11783-012-0424-9 doi (DE-627)SPR022394648 (SPR)s11783-012-0424-9-e DE-627 ger DE-627 rakwb eng Wang, Jingui verfasserin aut Effects of organic acids on Cd adsorption and desorption by two anthropic soils 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213 Lv, Jialong aut Fu, Yaolong aut Enthalten in Frontiers of environmental science & engineering in China Beijing : Higher Education Press, 2007 7(2012), 1 vom: 14. Juni, Seite 19-30 (DE-627)545787661 (DE-600)2388869-6 1673-7520 nnns volume:7 year:2012 number:1 day:14 month:06 pages:19-30 https://dx.doi.org/10.1007/s11783-012-0424-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 AR 7 2012 1 14 06 19-30
spelling	10.1007/s11783-012-0424-9 doi (DE-627)SPR022394648 (SPR)s11783-012-0424-9-e DE-627 ger DE-627 rakwb eng Wang, Jingui verfasserin aut Effects of organic acids on Cd adsorption and desorption by two anthropic soils 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213 Lv, Jialong aut Fu, Yaolong aut Enthalten in Frontiers of environmental science & engineering in China Beijing : Higher Education Press, 2007 7(2012), 1 vom: 14. Juni, Seite 19-30 (DE-627)545787661 (DE-600)2388869-6 1673-7520 nnns volume:7 year:2012 number:1 day:14 month:06 pages:19-30 https://dx.doi.org/10.1007/s11783-012-0424-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 AR 7 2012 1 14 06 19-30
allfields_unstemmed	10.1007/s11783-012-0424-9 doi (DE-627)SPR022394648 (SPR)s11783-012-0424-9-e DE-627 ger DE-627 rakwb eng Wang, Jingui verfasserin aut Effects of organic acids on Cd adsorption and desorption by two anthropic soils 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213 Lv, Jialong aut Fu, Yaolong aut Enthalten in Frontiers of environmental science & engineering in China Beijing : Higher Education Press, 2007 7(2012), 1 vom: 14. Juni, Seite 19-30 (DE-627)545787661 (DE-600)2388869-6 1673-7520 nnns volume:7 year:2012 number:1 day:14 month:06 pages:19-30 https://dx.doi.org/10.1007/s11783-012-0424-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 AR 7 2012 1 14 06 19-30
allfieldsGer	10.1007/s11783-012-0424-9 doi (DE-627)SPR022394648 (SPR)s11783-012-0424-9-e DE-627 ger DE-627 rakwb eng Wang, Jingui verfasserin aut Effects of organic acids on Cd adsorption and desorption by two anthropic soils 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213 Lv, Jialong aut Fu, Yaolong aut Enthalten in Frontiers of environmental science & engineering in China Beijing : Higher Education Press, 2007 7(2012), 1 vom: 14. Juni, Seite 19-30 (DE-627)545787661 (DE-600)2388869-6 1673-7520 nnns volume:7 year:2012 number:1 day:14 month:06 pages:19-30 https://dx.doi.org/10.1007/s11783-012-0424-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 AR 7 2012 1 14 06 19-30
allfieldsSound	10.1007/s11783-012-0424-9 doi (DE-627)SPR022394648 (SPR)s11783-012-0424-9-e DE-627 ger DE-627 rakwb eng Wang, Jingui verfasserin aut Effects of organic acids on Cd adsorption and desorption by two anthropic soils 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013 Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213 Lv, Jialong aut Fu, Yaolong aut Enthalten in Frontiers of environmental science & engineering in China Beijing : Higher Education Press, 2007 7(2012), 1 vom: 14. Juni, Seite 19-30 (DE-627)545787661 (DE-600)2388869-6 1673-7520 nnns volume:7 year:2012 number:1 day:14 month:06 pages:19-30 https://dx.doi.org/10.1007/s11783-012-0424-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 AR 7 2012 1 14 06 19-30
language	English
source	Enthalten in Frontiers of environmental science & engineering in China 7(2012), 1 vom: 14. Juni, Seite 19-30 volume:7 year:2012 number:1 day:14 month:06 pages:19-30
sourceStr	Enthalten in Frontiers of environmental science & engineering in China 7(2012), 1 vom: 14. Juni, Seite 19-30 volume:7 year:2012 number:1 day:14 month:06 pages:19-30
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	adsorption desorption cadmium organic acids temperature anthropic soil
isfreeaccess_bool	false
container_title	Frontiers of environmental science & engineering in China
authorswithroles_txt_mv	Wang, Jingui @@aut@@ Lv, Jialong @@aut@@ Fu, Yaolong @@aut@@
publishDateDaySort_date	2012-06-14T00:00:00Z
hierarchy_top_id	545787661
id	SPR022394648
language_de	englisch
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Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. 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author	Wang, Jingui
spellingShingle	Wang, Jingui misc adsorption misc desorption misc cadmium misc organic acids misc temperature misc anthropic soil Effects of organic acids on Cd adsorption and desorption by two anthropic soils
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topic_title	Effects of organic acids on Cd adsorption and desorption by two anthropic soils adsorption (dpeaa)DE-He213 desorption (dpeaa)DE-He213 cadmium (dpeaa)DE-He213 organic acids (dpeaa)DE-He213 temperature (dpeaa)DE-He213 anthropic soil (dpeaa)DE-He213
topic	misc adsorption misc desorption misc cadmium misc organic acids misc temperature misc anthropic soil
topic_unstemmed	misc adsorption misc desorption misc cadmium misc organic acids misc temperature misc anthropic soil
topic_browse	misc adsorption misc desorption misc cadmium misc organic acids misc temperature misc anthropic soil
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title	Effects of organic acids on Cd adsorption and desorption by two anthropic soils
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title_full	Effects of organic acids on Cd adsorption and desorption by two anthropic soils
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author_browse	Wang, Jingui Lv, Jialong Fu, Yaolong
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author-letter	Wang, Jingui
doi_str_mv	10.1007/s11783-012-0424-9
title_sort	effects of organic acids on cd adsorption and desorption by two anthropic soils
title_auth	Effects of organic acids on Cd adsorption and desorption by two anthropic soils
abstract	Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013
abstractGer	Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013
abstract_unstemmed	Abstract The objective of this experiment was to study the effects of malic, tartaric, oxalic, and citric acid on the adsorption and desorption characteristics of Cd by two typical anthropic soils (lou soil and irrigation-silted soil) in North-west China. Cadmium adsorption and desorption were studied under a range of temperatures (25°C, 30°C, 35°C, 40°C), organic acid concentrations (0.5–5.0 mmol·$ L^{−1} $), and pH values (2–8). The results showed that the Cd adsorption capacity of the lou soil was significantly greater than that of the irrigation-silted soil. Generally, Cd adsorption increased as the temperature increased. In the presence of $ NaNO_{3} $, the adsorption of Cd was endothermic with ΔH values of 31.365 kJ·$ mol^{−1} $ for lou soil and 28.278 kJ·$ mol^{−1} $ for irrigation-silted soil. The endothermic reaction indicated that H bonds were the main driving force for Cd adsorption in both soils. However, different concentrations of organic acids showed various influences on the two soils. In the presence of citric acid, chemical adsorption and van der Waals interactions were the main driving forces for Cd adsorption rather than H bonds. Although the types of organic acids and soil properties were different, the effects of the organic acids on the adsorption and desorption of Cd were similar in the two soils. The adsorption percentage of Cd generally decreased as organic acid concentrations increased. In contrast, the adsorption percentage increased as the pH of the initial solution increased. The exception was that adsorption percentage of Cd increased slightly as oxalic acid concentrations increased. In contrast, the desorption percentage of Cd increased with increasing concentrations of organic acids but decreased as the initial solution pH increased. © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013
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title_short	Effects of organic acids on Cd adsorption and desorption by two anthropic soils
url	https://dx.doi.org/10.1007/s11783-012-0424-9
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Effects of organic acids on Cd adsorption and desorption by two anthropic soils

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