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Yeheyo HA, Ealias AM, George G, Jagannathan U. Bioremediation potential of microalgae for sustainable soil treatment in India: A comprehensive review on heavy metal and pesticide contaminant removal. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 363:121409. [PMID: 38861884 DOI: 10.1016/j.jenvman.2024.121409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/26/2024] [Accepted: 06/05/2024] [Indexed: 06/13/2024]
Abstract
The escalating environmental concerns arising from soils contamination with heavy metals (HMs) and pesticides (PSTs) necessitate the development of sustainable and effective remediation strategies. These contaminants, known for their carcinogenic properties and toxicity even at small amounts, pose significant threats to both environmental ecology and human health. While various chemical and physical treatments are employed globally, their acceptance is often hindered by prolonged remediation times, high costs, and inefficacy in areas with exceptionally high pollutant concentrations. A promising emerging trend in addressing this issue is the utilization of microalgae for bioremediation. Bioremediation, particularly through microalgae, presents numerous benefits such as high efficiency, low cost, easy accessibility and an eco-friendly nature. This approach has gained widespread use in remediating HM and PST pollution, especially in large areas. This comprehensive review systematically explores the bioremediation potential of microalgae, shedding light on their application in mitigating soil pollutants. The paper summarizes the mechanisms by which microalgae remediate HMs and PSTs and considers various factors influencing the process, such as pH, temperature, pollutant concentration, co-existing pollutants, time of exposure, nutrient availability, and light intensity. Additionally, the review delves into the response and tolerance of various microalgae strains to these contaminants, along with their bioaccumulation capabilities. Challenges and future prospects in the microalgal bioremediation of pollutants are also discussed. Overall, the aim is to offer valuable insights to facilitate the future development of commercially viable and efficient microalgae-based solutions for pollutant bioremediation.
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Affiliation(s)
- Hillary Agaba Yeheyo
- Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, A.P, 522302, India.
| | - Anu Mary Ealias
- Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, A.P, 522302, India.
| | - Giphin George
- Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, A.P, 522302, India.
| | - Umamaheswari Jagannathan
- Department of Civil Engineering, Priyadarshini Engineering College, Vaniyambadi, Tirupattur, TN, 635751, India.
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Wdowczyk A, Szymańska-Pulikowska A. Micro- and Macroelements Content of Plants Used for Landfill Leachate Treatment Based on Phragmites australis and Ceratophyllum demersum. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19106035. [PMID: 35627572 PMCID: PMC9141712 DOI: 10.3390/ijerph19106035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/04/2022]
Abstract
One of the key problems associated with the functioning of landfills is the generation of leachate. In order to reduce their negative impact on the environment, various treatment technologies are applied. Among them, solutions based on the use of phytotechnology deserve special attention. The aim of this study was to evaluate the impact of landfill leachate on the content of micro- and macroelements in plant material. The research was carried out in four municipal waste landfills located in Poland. Emergent macrophytes (P. australis) and submergent macrophytes (C. demersum) were used in this research. The migration and distribution of pollutants reaching the roots and shoots of P. australis from water solutions were also studied. The concentrations of heavy metals in the studied plants were low in all analysed cases. Higher metal contents could often be observed in roots rather than in shoots, but these differences were insignificant. The chemical composition of the studied plant samples was primarily related to the source of origin of the treated leachate (landfill), as clearly demonstrated by cluster analysis. In the conducted studies, no important differences were noted in the accumulation of the studied components between submergent plants (C. demersum) and emergent macrophytes (P. australis).
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El Berkaoui M, El Adnani M, Hakkou R, Ouhammou A, Bendaou N, Smouni A. Assessment of the Transfer of Trace Metals to Spontaneous Plants on Abandoned Pyrrhotite Mine: Potential Application for Phytostabilization of Phosphate Wastes. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11020179. [PMID: 35050067 PMCID: PMC8777678 DOI: 10.3390/plants11020179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 05/06/2023]
Abstract
The abandoned Kettara pyrrhotite mine (Marrakech region, Morocco) is a real source of acid mine drainage (AMD) and heavy metal pollution from previous mining operations-which has spread, particularly because of wind erosion. A store-and-release cover system made of phosphate wastes was built on the site for preventing AMD. To ensure the integrity of this cover and its durability, it is desirable to revegetate it (phytostabilization) with plants adapted to the edaphoclimatic conditions of the region. In this paper, a study was carried out on the spontaneous vegetation around the phosphate cover in order to consider the selection of plants to promote the stabilization of the Kettara mine tailings pond. Nine species of native plants with their rhizospheric soils growing in agricultural soils and tailings from the Kettara mine were collected, and metals (As, Cd, Co, Cu, Pb, Zn, Ni, Cr) were analyzed. The soil analysis showed that the tailings contained high concentrations of Cu (177.64 mg/kg) and Pb (116.80 mg/kg) and that the agricultural soil contained high concentrations of As (25.07 mg/kg) and Cu (251.96 mg/kg) exceeding the toxicity level (Cu > 100 mg/kg, Pb > 100 mg/kg, As > 20 mg/kg). The plant analysis showed low trace metal accumulation in Scolymus hispanicus, Festuca ovina, Cleome brachycarpa, Carlina involucrata and Peganum harmala. These species had a bioconcentration factor (BCF) greater than 1 and a translocation factor (TF) less than 1, demonstrating a high tolerance to trace metals. Therefore, they are good candidates for use in the phytoremediation of the Kettara mine tailings. These species could also potentially be used for the phytostabilization of the phosphate waste cover of the Kettara mine, thus completing the rehabilitation process of this area.
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Affiliation(s)
- Meryem El Berkaoui
- Laboratory of Plant Physiology and Biotechnology, Laboratoire Mixte International—LMI AMIR, Research Center on Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10001, Morocco;
- Mining and Environmental Engineering Laboratory, National School of Mines of Rabat, l Av. Hadj Ahmed Cherkaoui, BP 753, Rabat 53000, Morocco;
- Correspondence: (M.E.B.); (A.S.); Tel.: +212-697-914-205 (M.E.B.); +212-661-771-662 (A.S.)
| | - Mariam El Adnani
- Mining and Environmental Engineering Laboratory, National School of Mines of Rabat, l Av. Hadj Ahmed Cherkaoui, BP 753, Rabat 53000, Morocco;
| | - Rachid Hakkou
- IMED-Lab, Faculty of Sciences and Technology, Cadi Ayyad University, BP 549, Marrakech 40000, Morocco;
- Mining Environment & Circular Economy (EMEC) Program, Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco
| | - Ahmed Ouhammou
- Laboratory of Microbial Biotechnology, Agrosciences and Environment, Faculty of Sciences-Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40000, Morocco;
| | - Najib Bendaou
- Laboratory of Plant Physiology and Biotechnology, Laboratoire Mixte International—LMI AMIR, Research Center on Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10001, Morocco;
| | - Abdelaziz Smouni
- Laboratory of Plant Physiology and Biotechnology, Laboratoire Mixte International—LMI AMIR, Research Center on Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10001, Morocco;
- Correspondence: (M.E.B.); (A.S.); Tel.: +212-697-914-205 (M.E.B.); +212-661-771-662 (A.S.)
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