scholarly journals Enhancement of exchangeable Cd and Pb immobilization in contaminated soil using Mg/Al LDH-zeolite as an effective adsorbent

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17007-17019
Author(s):  
Van Minh Dang ◽  
Huu Tap Van ◽  
N. D. Vinh ◽  
Thi Minh Hoa Duong ◽  
Thi Bich Hanh Nguyen ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Artificial Soil ◽  
Pb Ions ◽  
Pb Immobilization

In the present study, experiments using zeolite and Mg/Al LDH-zeolite for immobilization of Cd and Pb ions in artificial soil were conducted.

scholarly journals Immobilization of Lead from Pb-Contaminated Soil Amended with Peat Moss

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Seul-Ji Lee ◽  
Myoung-Eun Lee ◽  
Jae Woo Chung ◽  
Jin Hee Park ◽  
Keun Young Huh ◽  
...  
Keyword(s):  
Contaminated Soil ◽  
Extraction Method ◽  
Peat Moss ◽  
Leaching Test ◽  
Column Leaching ◽  
Pb Toxicity ◽  
Column Leaching Test ◽  
Leaching Experiment ◽  
Reduced Mobility ◽  
Pb Immobilization

Immobilization of lead (Pb) using soil amendments can reduce Pb toxicity and bioavailability in soil. This study evaluated Pb immobilization in a Pb-contaminated soil by using peat moss through various tests. The Pb-contaminated soil (2000 mg Pb·kg−1) was amended with 1%, 5%, and 10% of peat moss to immobilize Pb in the soil. The immobilization properties of Pb in the contaminated soil were evaluated by a column leaching experiment, a microcosm test, and a batch incubation test. Peat moss significantly reduced the Pb leaching in all of the experiments and more effectively reduced mobility and toxicity of Pb in the column leaching and microcosm tests than bioavailability in the batch incubation test. The immobilized lead from the soils amended with 1%, 5%, and 10% of peat moss was 37.9%, 87.1%, and 95.4% from the column leaching test, 18.5%, 90.9%, and 96.4% from the microcosm test, and 2.0%, 36.9%, and 57.9% from the NH4NO3extraction method, respectively, indicating that peat moss can be effectively used for the remediation of Pb-contaminated soil.

scholarly journals THE EFFECT OF SOIL PH AND ZEOLITE APPLICATION ON LEAD (PB) IMMOBILIZATION ON CONTAMINATED SOIL

2021 ◽  
Vol 226 (09) ◽  
pp. 93-99
Author(s):  
Đàm Hà Lương Thanh ◽  
Đặng Thị Thái Hà
Keyword(s):  
Soil Ph ◽  
Contaminated Soil ◽  
Pb Immobilization

Ứng dụng zeolit trong xử lý môi trường đất đã được chứng minh là có tác dụng cố định các nguyên tố độc hại tiềm tàng (PTE) một cách hiệu quả. Độ pH của đất cũng có thể ảnh hưởng đến tính khả dụng của khả năng này. Hiện chưa có nghiên cứu nào kiểm tra tác động tương tác của zeolit và pH đất đối với sự cố định chì di động. Do đó, nghiên cứu này đã khảo sát ảnh hưởng của 2 loại zeolit là zeolit tự nhiên (N-Z) và zeolit lưỡng cực(Mg/Al LDH zeolite) (LDH-Z) được bổ sung với 3% trọng lượng, trong một thí nghiệm đối chứng (CT1) và 5 thí nghiệm với 5 chế độ pH đất (dao động từ 5.0 đến 9.0) trên năm dạng tồn tại của chì trong đất bị ô nhiễm chì. Kết quả cho thấy rằng các nghiệm thức được bổ sung N-Z và LDH-Z có khả năng cố đinh Pb di động, có thể thúc đẩy chuyển đổi chì ở dạngdi động thành các dạng ổn định. Sự cố định của chì được ghi nhận lớn nhất trong điều kiện pH của đất là 5,0 khi sử dụng cả zeolit tự nhiên và zeolit lưỡng cực, và khả năng cố định chì của vật liệu giảm khi giá trị pH đất tăng lên. Trong số các vật liệu được thí nghiệm, zeolit lưỡng cực cho tỷ lệ cố định Pb di động trong đất ô nhiễm cao hơn đáng kể so với zeolit tự nhiên. Lượng chì di động trong thí nghiệm đối chứng được báo cáo là 86,31%, và con số này giảm xuống 45,5% và 37,88% sau khi ủ với zeolit tự nhiên và zeolit LDH.

Recovery of nutrients from wastewater by a MgCl2 modified zeolite and their reuse as an amendment for Cu and Pb immobilization in soil

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 55809-55818 ◽  
Author(s):  
Hao Wang ◽  
Xuejiang Wang ◽  
Jie Chen ◽  
Peng Xia ◽  
Jianfu Zhao
Keyword(s):  
Contaminated Soil ◽  
Recovery Process ◽  
Nutrient Recovery ◽  
Modified Zeolite ◽  
Soil P ◽  
Lead Immobilization ◽  
Pb Immobilization

In this study, nutrients in wastewater were simultaneously removed by magnesium modified zeolite, and the precipitates of the nutrient recovery process were applied as a kind of amendment to achieve copper and lead immobilization in contaminated soil.

Effect of Soil pH on Immobilization of Lead by Phosphate-Solubilizing Bacteria

2014 ◽  
Vol 955-959 ◽  
pp. 3595-3599
Author(s):  
Li Ping Dong ◽  
Xiao Li Zhu ◽  
Ya Ya Xu ◽  
Jian Xia Zhang ◽  
Jiao Qin Liu ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Soil Ph ◽  
Contaminated Soil ◽  
Extraction Methods ◽  
Phosphate Solubilizing Bacteria ◽  
Chemical Forms ◽  
Selective Sequential Extraction ◽  
Remediation Efficiency ◽  
Phosphate Solubilizing ◽  
Pb Immobilization

Two phosphate-solubilizing bacteria were used to immobilize the lead in contaminated soil using the selective sequential extraction methods to detect the chemical forms of lead. The results showed that PSB 3-5-1-1 had higher ability of Pb immobilization compared with ID-a .The beat remediation efficiency could be obtained when pH is 6.

An Experimental Study on Geotechnical and Electrical Properties of an Oil-Contaminated Soil at Thi-Qar Governorate/Iraq

2019 ◽  
Vol 10 (3) ◽  
pp. 148
Author(s):  
Nesreen Kurdy Al-Obaidy ◽  
Assad Al-Shueli ◽  
Hawraa Sattar ◽  
Zainab Majeed ◽  
Noor Al Huda Hamid
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Contaminated Soil

INFLUENCE OF MINERAL SORBENTS ON GROWTH AND DEVELOPMENT OF HORDEUM VULGARE ON SOIL POLLUTED BY BENZ(A)PYRENE

2020 ◽  
Author(s):  
A.I. Barbashev ◽  
◽  
S.N. Sushkova ◽  
T.M. Minkina ◽  
T.S. Dudnikova ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Toxic Effect ◽  
Contaminated Soil ◽  
Growth And Development

The effect of diatomite and tripoli added into the soil artificially contaminated with benzo[a]pyrene was studied. A decrease in the toxic effect of BaP on barley plants was established when diatomite and tripoli were added as ameliorants to contaminated soil. The improvement of plants grown сharacteristics on soils contaminated with BaP with the addition of diatomite and tripoli was shown up to 2-4 times compare to contaminated samples.

THE EFFECT OF BACTERIAL STRAINS ON THE ENZYMATIC ACTIVITY OF SOILS IN IMPACT ZONE OF ATAMAN LAKE

2020 ◽  
Author(s):  
V.V. Zinchenko ◽  
◽  
E.S Fedorenko ◽  
A.V Gorovtsov ◽  
T.M Minkina ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Contaminated Soil ◽  
Model Experiment ◽  
Impact Zone ◽  
Bacterial Strains ◽  
The Impact

As a result of the model experiment, an increase in the enzymatic activity of meadow chernozem of the impact zone of Ataman Lake with the introduction of a strains mixture of metal-resistant microorganisms into the soil was established. The experiment has shown that the application of bacterial strains increases the dehydrogenase activity of contaminated soil by 51.8% compared to the variant without remediation

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