Abstract
The retention of Cr(VI) in subsurface environment is highly dependent on humic acid (HA), however, the undissolved form is poorly investigated, the amount of which can be of two magnitude higher compared with the dissolved one in soils and sediments. In this study, the effects of time, initial concentration, pH, ionic strength, ion species and temperature on the adsorption and reduction respective processes by undissolved self-extracted peat soil HA from Northeast China (EHA) and from Sigma Aldrich (CHA) were investigated by batch experiments. Cr(VI) removal rates by EHA were higher than CHA and the maximum Cr(VI) removal amount for EHA and CHA were 0.77 (±0.01) and 0.61 (±0.02) mmol/g. Of these, 98% and 54% were reduced to Cr(III) by EHA and CHA respectively, which were related to the phenolic group content of HA. With time, the adsorbed Cr(VI) on HA increased to a maximum level (equilibrium) beyond which Cr(VI) reduction dominated the removal process. Cr(VI) adsorption and reduction by undissolved HA increased as pH decreased. Co-existing ion species had varying effect on Cr(VI) adsorption and indirectly on reduction especially divalent cations which was suggestive of cation bridging between Cr anions and ionized carboxyl gro...Continue Reading
References
Feb 24, 2001·Environmental Microbiology·D R LovleyE L Blunt-Harris
Jan 5, 2002·Environmental Science & Technology·L WengW H Van Riemsdijk
Dec 19, 2002·Environmental Science & Technology·Liping WengWillem H Van Riemsdijk
Jul 28, 2004·Journal of Colloid and Interface Science·Heike B Bradl
Sep 13, 2005·Environmental Toxicology and Chemistry·Rebecca SuttonHans-Rolf Schulten
Nov 29, 2005·Chemosphere·J KyziolPh Schmitt-Kopplin
Jul 24, 2007·Chemosphere·Donghee ParkJong Moon Park
Nov 1, 2007·Environmental Science & Technology·André Van Zomeren, Rob N J Comans
Apr 2, 2008·Colloids and Surfaces. B, Biointerfaces·Ying LiChunling Li
Jul 29, 2008·Journal of Hazardous Materials·Jonathan FebriantoSuryadi Ismadji
Feb 14, 2009·Chemosphere·Pavel JanosJosef Sedlbauer
Sep 23, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Eugenia Iskrenova-TchoukovaR James Kirkpatrick
Mar 18, 2011·Water Science and Technology : a Journal of the International Association on Water Pollution Research·A K Giri, R K Patel
May 26, 2011·Environmental Science and Pollution Research International·Jie LiuYi-Nian Zhu
Feb 11, 2012·Journal of Hazardous Materials·Liang PengJidong Gu
Sep 22, 2012·Bulletin of Environmental Contamination and Toxicology·Evangelos TziritisStella Repani
Oct 27, 2012·Journal of Environmental Quality·Wendan XiaoXiaoe Yang
Oct 30, 2012·Regulatory Toxicology and Pharmacology : RTP·Joseph T HaneyCiriaco Valdez-Flores
Nov 1, 2012·PloS One·Priti SharmaSudhir K Goel
Aug 15, 2014·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jianchao HaoCongqiang Liu
Mar 30, 2017·Environmental Pollution·Jia ZhangHonghan Chen
Nov 12, 2017·Environmental Pollution·Jia ZhangHonghan Chen
Citations
Sep 9, 2019·Environmental Science and Pollution Research International·Abhishek AjmaniSelvaraju Narayanasamy
Sep 25, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Wenlin ZhaoFeng Jiang
Mar 23, 2020·Environmental Science and Pollution Research International·Yue LiuFeng Xie
Jul 7, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jurng-Jae YeeMeng-Wei Wan
Nov 21, 2020·Journal of Nanoscience and Nanotechnology·Meng WangKai Huang
Sep 6, 2020·Ecotoxicology and Environmental Safety·Ahmad Ali RouhaninezhadMojtaba Norouzi Masir
Feb 13, 2021·Journal of Environmental Management·Sidney Fernandes Sales JuniorEnrico Mendes Saggioro
Mar 21, 2021·Environmental Science and Pollution Research International·Samuel BarnieHonghan Chen
Apr 17, 2020·The Science of the Total Environment·Jun XuHanzhong Jia
May 18, 2021·Environmental Pollution·Sidney Fernandes Sales JuniorEnrico Mendes Saggioro
Jun 29, 2021·Chemosphere·Lin XuHonghan Chen
Feb 25, 2020·Ecotoxicology and Environmental Safety·Sangeetha Cj, Shashidhar T
Nov 8, 2021·The Science of the Total Environment·Bin YangXinde Cao
Dec 19, 2019··Nurlisa HidayatiAldes Lesbani