Cadmium solubility in paddy soil amended with organic matter, sulfate, and iron oxide in alternative watering conditions

Yuan, Chaolei; Li, Fangbai; Wen-hua, Cao; Yang, Zi; Hu, Min; Sun, Weimin

doi:10.1016/j.jhazmat.2019.05.065

Cited by 92 publications

(31 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this value fluctuated around 1.00 suggesting that the congruent dissolution for Ca and Mg from limestone resulted in the linear reaction path in the central lake region. Oxidation of DOM was accompanied by a reduction of SO4 2− , both of which were consumed dramatically, especially at lake inlets (SO4 2− and DOC, R 2 = 0.98, p ≤ 0.01), which indicated that gathering of sulfate-reducing bacteria contributed greatly to DOM decomposition [33,36]. Metals were liberated during the aforementioned degrading processes of particulate organic matter (total metals and the ratio of Ca/Mg and Sr/Mg, R 2 = 0.83, p ≤ 0.01) and SO4 2− was also utilized as electron acceptor, and this part of particulate organic carbon (POC) was defined as mineralassociated organic carbon [37,38].…”

Section: Surface and Underlying Watermentioning

confidence: 97%

“…Higher molecular weight and aromaticity of DOM was preferentially fractionated onto iron minerals, and cations (Ca, Na and Cu) intercalated between organic matter and iron by bridging to form organic mineral complexes [31,32]. When oxygen is rapidly depleted, microorganisms use oxidized components such as NO 3 − , Mn(IV), Fe(III) and SO 4 2− as electron acceptors for the decomposition of organic matter [33]. SO 4 components such as NO3 − , Mn(IV), Fe(III) and SO4 2− as electron acceptors for the decomposition of organic matter [33].…”

Section: Surface and Underlying Watermentioning

confidence: 99%

“…When oxygen is rapidly depleted, microorganisms use oxidized components such as NO 3 − , Mn(IV), Fe(III) and SO 4 2− as electron acceptors for the decomposition of organic matter [33]. SO 4 components such as NO3 − , Mn(IV), Fe(III) and SO4 2− as electron acceptors for the decomposition of organic matter [33]. SO4 2− played a critical role as electron acceptor [34] during particulates' degradation and unbound Ca 2+ , Mg 2+ in certain ratios (SO4 2− and ratio of Ca/Mg, R 2 = 0.75, p ≤ 0.01).…”

Section: Surface and Underlying Watermentioning

confidence: 99%

See 2 more Smart Citations

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Xiao

Mostofa

et al. 2019

IJERPH

View full text Add to dashboard Cite

The dynamics of trace metals and the complexation behavior related to organic matter in the interface between water and sediment would influence water quality and evolution in the lake system. This study characterized the distribution of trace metals and the optical properties of dissolved organic matter (DOM) on the surface, and the underlying and pore water of Dianchi Lake (DC) to understand the origin of metals and complexation mechanisms to DOM. Some species of trace metals were detected and Al, Ti, Fe, Zn, Sr and Ba were found to be the main types of metals in the aquatic environment of DC. Ti, Fe, Sr and Ba predominated in water above the depositional layer. Al, Ti, Fe and Sr were the most abundant metallic types in pore water. Mn and Zn were the main type found at the southern lake site, reflecting the contribution of pollution from an inflowing river. The correlations between DOM and metals suggested that both originated from the major source as particulate organic matter (POM), associated with weathering of Ca-, Mg-carbonate detritus and Fe- or Mn-bearing minerals. High dynamics of DOM and hydrochemical conditions would change most metal contents and speciation in different water compartments. Proportions of trace metals in dissolved organic carbon (DOC) in natural waters were correlated with both DOM molecular weight and structure, different metals were regulated by different organic properties, and the same metal also had specific binding characteristic with DOM in various water compartments. This study highlighted the interrelation of DOM and metals, as well as the pivotal role that organic matter and nutrients played during input, migrations and transformations of metals, thereby reflecting water quality evolution in the lake systems.

show abstract

Section: Surface and Underlying Watermentioning

confidence: 97%

Section: Surface and Underlying Watermentioning

confidence: 99%

Section: Surface and Underlying Watermentioning

confidence: 99%

See 1 more Smart Citation

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Xiao

Mostofa

et al. 2019

IJERPH

View full text Add to dashboard Cite

show abstract

“…However, the application of organic matter like in organic production systems can retard the oxidation and buffer the pH change (Yuan et al, 2016). In this regard, Yuan et al (2019) reported that application of organic matter is the most effective option for immobilising dissolved soil cadmium in anaerobic soil conditions like found in rice production. Such application of organic matter provides electron donors to iron-reducing bacteria which can restrict Cd remobilization following soil drainage (Yuan et al, 2019).…”

Section: Heavy Metals In Rice Grain (Arsenic Lead and Cadmium)mentioning

confidence: 99%

“…In this regard, Yuan et al (2019) reported that application of organic matter is the most effective option for immobilising dissolved soil cadmium in anaerobic soil conditions like found in rice production. Such application of organic matter provides electron donors to iron-reducing bacteria which can restrict Cd remobilization following soil drainage (Yuan et al, 2019). In this study, we found that the e-AWD water regime reduced grain Cd concentration in compost and digestate treatment which is consistent with previous studies by Honma et al who also found intermittent irrigation simultaneously reduce As and Cd uptake in rice grain.…”

Section: Heavy Metals In Rice Grain (Arsenic Lead and Cadmium)mentioning

confidence: 99%

Reducing greenhouse gas emissions and grain arsenic and lead levels without compromising yield in organically produced rice

Islam

Neergaard

Sander

et al. 2020

Agriculture, Ecosystems & Environment

View full text Add to dashboard Cite

A B S T R A C TFlooded rice production is crucial to global food security, but there are associated environmental concerns. In particular, it is a significant source of methane (CH4) and nitrous oxide (N2O) emissions and a large consumer of water resources, while arsenic levels in the grain are a serious health concern. There is also a tendency to use more organic fertilisers to close nutrient cycles, posing a threat of even higher GHG emissions and grain arsenic levels. It has been shown that alternate wetting and drying (AWD) water management reduces both water use and GHG emissions, but success at maintaining yields varies. This study tested the effect of early AWD (e-AWD) versus continuous flooding (CF) water management practices on grain yields, GHG emissions and grain arsenic levels in a split-plot field experiment with organic fertilisers under organic management. The treatments included: i) farmyard manure, ii) compost, and iii) biogas digestate, alone or in combination with mineral fertiliser. The e-AWD water regime showed no difference in yield for the organic treatments. Yields significantly increased by 5-16 % in the combination treatments. Root biomass and length increased in the e-AWD treatments up to 72 and 41 %, respectively. The e-AWD water regime reduced seasonal CH4 emissions by 71-85 % for organic treatments and by 51-76 % for combination treatments; this was linked to a 15-47 % reduction in dissolved organic carbon (DOC), thereby reducing methanogenesis. N2O emissions increased by 23-305 % but accounted for <20 % of global warming potential (GWP). Area and yield-scaled GWPs were reduced by 67-83 %. The e-AWD regime altered soil redox potentials, resulting in a reduction in grain arsenic and lead concentrations of up to 66 % and 73 % respectively. Grain cadmium levels were also reduced up to 33 % in organic treatments. Structural equation modelling showed that DOC, redox, ammonium and root biomass were the key traits that regulated emissions and maintained yield. Despite the fact that the experiment was conducted in the dry-season when soil moisture conditions can be relatively well-controlled, our findings should be confirmed in multi-year studies in farmers' fields. These results suggest that in flooded rice systems receiving organic amendments or organic management, the e-AWD water regime can achieve multiple environmental and food safety objectives without compromising yield.

show abstract

Effects of Dissolved Organic Matter on the Bioavailability of Heavy Metals During Microbial Dissimilatory Iron Reduction: A Review

Gong

2021

Reviews of Environmental Contamination and Toxicology Volume 257

View full text Add to dashboard Cite

Cadmium solubility in paddy soil amended with organic matter, sulfate, and iron oxide in alternative watering conditions

Cited by 92 publications

References 33 publications

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Reducing greenhouse gas emissions and grain arsenic and lead levels without compromising yield in organically produced rice

Effects of Dissolved Organic Matter on the Bioavailability of Heavy Metals During Microbial Dissimilatory Iron Reduction: A Review

Contact Info

Product

Resources

About