In this study, the chicken eggshell (ES) particle size was evaluated in relation to the neutralization rate (γ) of acid mine drainage (AMD) under stirring conditions. Four treatments were carried out using three different particle sizes (&lt;63, 250−500, and 1,410−2,000 μm). In the treatments T1−T3, the pH increase (ΔpH) was monitored every 5 min and ES was added until a pH ~6.0 was reached and the γ was calculated every 5 min. In T4, ΔpH and γ were measured every 8 hours for 48 hours, and ES particle size &lt;63 μm was used. At the end of each treatment, the redox potential (Eh), SO42– removal efficiency (ηSO42–), and heavy metal (HM) removal efficiency (ηHM) were determined. The γ values to achieve a pH ~6.0 were 1.6×10−1, 1.1×10−1 y 6.0×10−2 min–1 for particle size of &lt;63, 250−500, and 1410-2000 μm, respectively. However, regardless of particle size, the highest γ effect was observed within the first 5−10 min. Overall, the Eh was reduced to ca. 210 mV in all treatments. The maximum ηSO42– was ca. 70% in T1 and T4. However, the larger the particle size, the longer and higher ES concentration was needed to achieve a pH ~6.0 and the ηSO42– was lower. The maximum ηHM recorded in all treatments were 100% for Al, Fe, and Mo. The use of ES with particle size &lt;63 μm reduced the concentration needed to reach the target pH, increased the γ, favored the ηSO42–, and removed the Fe3+ decreasing the Eh.

Jazmin Alaid López-Díaz

Oscar Talavera-Mendoza

Katy Juárez

Mario Esparza-Soto

Juan Violante-González

Yam Zul Ernesto Ocampo-Díaz

Erik Yoel Carreto-Morales

Giovanni Hernández-Flores

Revista Internacional de Contaminación Ambiental

本刊接受关于污染的物理化学方面、污染物分布及生物生态效应研究的原创和评论论文；以及测量和控制新技术的技术和实施；也接受有关该主题的社会学、经济和法律研究。文章将通过专家仲裁和编辑委员会的意见发表，具有适当的水平和质量，其内容将由作者全权负责。 《国际环境污染杂志》为季刊，于 2 月 1 日、5 月、8 月和 11 月出版。

This journal accepts original and review papers on the physicochemical aspects of pollution, the distribution of pollutants, and the biological and ecological effects of pollution. It also welcomes studies on new technologies for measurement and control, as well as sociological, economic, and legal research related to the topic. Articles will be published based on expert arbitration and the opinions of the editorial board, ensuring appropriate levels of quality and responsibility for the content lies solely with the authors. The "Revista Internacional de Contaminacion Ambiental" is a quarterly journal published in February, May, August, and November.

本刊接受关于污染的物理化学方面、污染物分布及生物生态效应研究的原创和评论论文；以及测量和控制新技术的技术和实施；也接受有关该主题的社会学、经济和法律研究。文章将通过专家仲裁和编辑委员会的意见发表，具有适当的水平和质量，其内容将由作者全权负责。《Revista Internacional de Contaminacion Ambiental》为季刊，于2月1日、5月、8月和11月出版。

Category	Quartile
环境科学与生态学	4
环境科学与生态学, 环境科学	4

Acid mine drainage neutralization rate using biogenic calcite

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
ENVIRONMENTAL SCIENCES	4