Akansha Garg, Prerna Chauhan, Charanjeet Kaur, Pankaj Kumar Arora, Sanjay Kumar Garg, Vijay Pal Singh, Krishna Pal Singh, Alok Srivastava
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Comprehensive heavy metal remediation mechanisms with insights into CRISPR-Cas9 and biochar innovations
Heavy metal contamination of the environment is a serious issue, and more efficient and effective bioremediation techniques are needed. This review introduces current heavy metal bioremediation techniques, with focus on phytoremediation and microbial remediation, and recent developments in biochar and CRISPR-Cas9 technology. Phytoremediation employs the natural process of plants to accumulate and detoxify metals as an eco-friendly and sustainable technique. Microbial remediation by fungi and bacteria provides an additional approach through reduction, sequestration, and transformation of metals. Biochar as a high-carbon value-added pyrolytic biomass product improves soil quality, increases microbial activity, and adsorbs heavy metals, making bioremediation more effective. The discovery of CRISPR-Cas9 revolutionized gene engineering by allowing gene editing of plants and microbes to improve their metal tolerance and degradation. This review outlines recent developments, synergistic uses of biochar and CRISPR-Cas9, and how they might enhance phytoremediation and microbial remediation. By combining such novel technologies, strong, sustainable, and scalable solutions could be built for curbing heavy metal pollution and safeguarding environmental health.
期刊介绍：
Biodegradation publishes papers, reviews and mini-reviews on the biotransformation, mineralization, detoxification, recycling, amelioration or treatment of chemicals or waste materials by naturally-occurring microbial strains, microbial associations, or recombinant organisms.
Coverage spans a range of topics, including Biochemistry of biodegradative pathways; Genetics of biodegradative organisms and development of recombinant biodegrading organisms; Molecular biology-based studies of biodegradative microbial communities; Enhancement of naturally-occurring biodegradative properties and activities. Also featured are novel applications of biodegradation and biotransformation technology, to soil, water, sewage, heavy metals and radionuclides, organohalogens, high-COD wastes, straight-, branched-chain and aromatic hydrocarbons; Coverage extends to design and scale-up of laboratory processes and bioreactor systems. Also offered are papers on economic and legal aspects of biological treatment of waste.
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