Greenhouse cultivation mitigates metal-ingestion-associated health risks from vegetables in wastewater-irrigated agroecosystems

Cao, Chun; Chen, Xingpeng; Ma, Zhixin; Jia, Hao; Wang, Junjian

doi:10.1016/j.scitotenv.2016.04.044

Cited by 68 publications

(20 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, studying changes in soil nutrients and environmental elements in intensively used vegetable planting areas has become a research hotspot [1,2] . Facility agriculture is a reflection of the large-scale commercialization and modernization in agriculture, in which greenhouse soil is under a specific long-term environment that includes high multiple cropping indexes, high fertilization rates, high temperatures and humidity levels, high evaporation rates, non-rainfall leaching and out-of-season cultivation [3] . Thus, the soil physical, chemical and biological traits are changed [4] .…”

Section: Introduction mentioning

confidence: 99%

Variations of soil quality from continuously planting greenhouses in North China

Li¹,

Xu²,

Liu³

2019

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

Vegetable greenhouses form a significant land utilisation pattern in China. A case study of the greenhouse soil quality changes and potential risk to humans under a specific long-term environment, which includes high fertilization rates, high temperatures and humidity levels and out-of-season cultivation, is presented in this study. Soil profiles of 72 representative solar greenhouses with various planting years were sampled in Shouguang City, which is the birthplace of winter greenhouse in China. The temporal distribution of soil quality changes were quantitatively evaluated through the application of a correlation analysis and soil quality assessment. The soil was highly enriched with phosphorus and potassium and had low organic matter content. The organic matter, nitrogen, phosphorus and potassium contents increased with the years planted, reached their peak values after 5-10 a, and declined as the soil layer's depth increased. The infiltration rate of nitrate was relatively high, which poses risks to underground water safety. A comprehensive soil quality assessment revealed that in vegetable greenhouses planted for different periods, the soil quality improved at first and then sharply declined after 10 a. Studying greenhouse soil quality changes will aid in implementing nutrient management strategies to improve the soil quality and sustainable development programs for the vegetable industry.

show abstract

Section: Introduction mentioning

confidence: 99%

Variations of soil quality from continuously planting greenhouses in North China

Li¹,

Xu²,

Liu³

2019

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

show abstract

“…Comparing with traditional suspended algae (mixed or monocultures) wastewater purification systems, the major advantage of periphyton-based measure is that the system can avoid separation of suspended algal biomass and water, in addition to that nutritious compounds can be retained in algal biomass which further can be harvested and used as fertilizers in agriculture (Schumacher & Sekoulov, 2002). As a result, periphytonbased methods were applied to remove P from wastewaters and subsequently acquired a favorable effect in removing P from wastewaters (Boelee et al, 2011;Cao et al, 2016;Guzzon et al, 2008;Jöbgen et al, 2004;Posadas et al, 2013;Sukačová et al, 2015;Zamalloa et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Phototrophic periphyton techniques combine phosphorous removal and recovery for sustainable salt-soil zone

Feng

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

• Phototrophic periphyton is effective in removing P (P o and P i ) from wastewaters.• Adsorption with physiochemical characteristic dominated P removal mechanism by periphyton.• The P within periphyton is mainly in forms of Labile-P and Ca-P.• The periphyton has vast potential application in recovering P for salt-soil zone The P (P i as KH 2 PO 4 and P o as ATP) removal processes by phototrophic periphyton were investigated by determining the removal kinetics, metal content (Ca, Mg, Al, Fe, Cu, and Zn) of the solution and P fractions (Labile-P, Fe/Al-P, Ca-P, and Res-P) within the periphyton. Results showed that the periphyton was able to remove completely both P i and P o after 48 h when periphyton content was greater than 0.2 g L −1 (dry weight). The difference between P i and P o removal was the conversion of P o into P i by the periphyton, after that the removal mechanism was similar. The P removal mechanism was mainly due to the adsorption on the surfaces of the periphyton, including two aspects: i) the adsorption of PO 4 3− onto metal salts such as calcium carbonate (~50%) and ii) complexation between PO 4 3− and metal cations such as Ca 2+ (~40%). However, this bio-adsorptional process was significantly influenced by the extracellular polymeric substance (EPS) of periphyton, water hardness, initial G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f oKeywords:Science of the Total Environment 568 (2016) 838-844Abbreviations: α, the initial adsorption rate (mg g −1 h −1 ); β, the desorption constant (g mg −1 ); m, mass of adsorbent (g); t, time (h); C, the constant of boundary layer effect; H, Shannon index; R, ideal gas constant (8.314 J mol −1 K −1 ); T, temperature (K); V, the volume of solutions (L); k 1 , pseudo-first-order kinetic model rate constant (h −1 ); k 2 , pseudosecond-order kinetic model rate constant (mg g −1 h −1 ); q e , the amount of P adsorbed onto the periphyton at equilibrium (mg g −1 ); q e,cal , the amount of P adsorbed onto the periphyton calculated by model at equilibrium (mg g −1 ); q m , the maximum adsorption capacity for the periphyton (mg g −1 ); q t , the amount of P adsorbed onto the periphyton at time t (mg g −1 ); C 0 , initial P concentration (mg L −1 ); K id , intraparticle rate constant (mg g −1 h -0.5 ); P i , inorganic phosphorus (mg L −1 ); P o , organic phosphorus (mg L −1 ); TP, the total phosphorus content (mg L −1 ); R 2 , linear regression coefficient; ANSW, artificial non-point source wastewater; ATP, disodium adenosine triphosphate (C 10 H 14 O 13 N 5 P 3 Na 2 ·3H 2 O); DW, dry weight of the periphyton (g); EPS, extracellular polymeric substance of the periphyton; PDW, pure distilled water.⁎ Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v P concentration, temperature and light intensity. This study not only deepens the understanding of P biogeochemical process in aquatic ecosystem, but provides a potential biomaterial...

show abstract

“…The limit of Cd in rice grains was based on the limits of 8 elements including lead, chromium, cadmium, mercury, selenium, arsenic, copper and zinc in grain (including cereals, beans and potatoes) and products (NY861-2004). The single factor pollution index method and the Nemero comprehensive pollution index method were used to evaluate the heavy metal content in crops [25].…”

Section: Risk Assessment Of Heavy Metal Pollution In Rice Grainsmentioning

confidence: 99%

Investigation of Cadmium Content in Rice in Heilongjiang Province and Health Risk Assessment

Cao

Zhang

2020

Preprint

View full text Add to dashboard Cite

We investigated the cadmium content in soils and rice in Cha Hayang, Wuchang, Fangzheng, Xiangshui, and Jiansanjiang areas of Heilongjiang Province, and characterized the effect of rice intake on human health. The samples were analyzed by ICP-MS, and the cadmium transfer in soil-rice system was modeled by the Nemero comprehensive pollution index method. The health risk assessment model was used to study the status of cadmium pollution in rice and its health risk assessment for adults and children. The results showed that the average contents of cadmium in rice were 0.003 (Cha Hayang), 0.016 (Wuchang), 0.006 (Fangzheng), 0.006 (Xiangshui), and 0.005 (Jiansanjiang) mg kg-1. The prediction model developed in this study, including the total heavy metals and pH value of the soil, effectively described the transfer of cadmium in the soil-rice system of Wuchang, Chahayang and Xiangshui paddy fields (with R2 between 0.256 and 0.468). The pollution index of the study area was less than 1. The comprehensive pollution index was 0.037<1, sugesting no pollution, and the comprehensive pollution index was between 0.059 and 0.158. The health risk index of carcinogenic heavy metal cadmium to adults and children in Cyang and JianSanjiang areas was lower than that recommended by USEPA (1 × 10-4), suggesting no risk of cancer. However, the mean values in Wuchang, Fang Zheng and Xiangshui were higher than the maximum acceptable risk recommended by USEPA, suggesting a risk of cancer.

show abstract

Greenhouse cultivation mitigates metal-ingestion-associated health risks from vegetables in wastewater-irrigated agroecosystems

Cited by 68 publications

References 49 publications

Variations of soil quality from continuously planting greenhouses in North China

Variations of soil quality from continuously planting greenhouses in North China

Phototrophic periphyton techniques combine phosphorous removal and recovery for sustainable salt-soil zone

Investigation of Cadmium Content in Rice in Heilongjiang Province and Health Risk Assessment

Contact Info

Product

Resources

About