Biochar-based composites for removing chlorinated organic pollutants: Applications, mechanisms, and perspectives

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 21, P. 100420 - 100420

Published: April 12, 2024

Chlorinated organic pollutants constitute a significant category of persistent due to their widespread presence in the environment, which is primarily attributed expansion agricultural and industrial activities. These are characterized by persistence, potent toxicity, capability for long-range dispersion, emphasizing importance eradication mitigate environmental pollution. While conventional methods removing chlorinated encompass advanced oxidation, catalytic bioremediation, utilization biochar has emerged as prominent green efficacious method recent years. Here we review biochar's role remediating typical organics, including polychlorinated biphenyls (PCBs), triclosan (TCS), trichloroethene (TCE), tetrachloroethylene (PCE), organochlorine pesticides (OCPs), chlorobenzenes (CBs). We focus on impact material properties adsorption mechanisms organics. This highlights use sustainable eco-friendly pollutants, especially when combined with biological or chemical strategies. Biochar facilitates electron transfer efficiency between microorganisms, promoting growth dechlorinating bacteria mitigating toxicity organics through adsorption. Furthermore, can activate processes such oxidation nano zero-valent iron, generating free radicals decompose compounds. observe broader application bioprocesses treating soil, reducing impacts. Conversely, water-based integrating proved more effective, leading superior purification results. contributes theoretical practical pollutants.

Language: Английский

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Highly efficient removal of 1,1,1-trichloroethane from simulated groundwater by polydopamine-modified iron/polylactic acid/biochar composite coupling with Shewanella oneidensis MR-1

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113920 - 113920

Published: Aug. 23, 2024

Language: Английский

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A comprehensive review of sustainable bioremediation techniques: Eco friendly solutions for waste and pollution management

Waste Management Bulletin, Journal Year: 2024, Volume and Issue: 2(3), P. 154 - 171

Published: July 22, 2024

Bioremediation, an advanced and environmentally sustainable technology, utilizes biological microorganisms to mitigate pollution. This review combines insights from two perspectives: one focusing on the mechanisms, applications, types of bioremediation, other examining transformative potential integrating Internet Things (IoT), Artificial Intelligence (AI), biosensors in pollution management. The first perspective delves into effectiveness bioremediation decomposing detoxifying hazardous substances, emphasizing its cost-effectiveness eco-friendliness compared conventional methods. In-situ ex-situ methods are analyzed, along with intrinsic engineered techniques, phytoremediation strategies for heavy metal removal. underscores growing importance addressing industrial effluents, contaminated soils, groundwater, future advancements expected enhance efficiency applicability. From second perspective, recent IoT, AI, explored their revolutionize waste IoT facilitates real-time monitoring remote management, AI enhances data analysis predictive modelling, contribute precise pollutant detection environmental monitoring. highlights synergistic integration these technologies, presenting smart systems feedback loops adaptive capabilities. Together, technologies offer scalable solutions mitigation, marking a significant stride towards

Language: Английский

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Application of dissimilatory iron-reducing bacteria for the remediation of soil and water polluted with chlorinated organic compounds: Progress, mechanisms, and directions

Chemosphere, Journal Year: 2024, Volume and Issue: 352, P. 141505 - 141505

Published: Feb. 20, 2024

Language: Английский

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Underpinning the ecological response of mixed chlorinated volatile organic compounds (CVOCs) associated with contaminated and bioremediated groundwaters: A potential nexus of microbial community structure and function for strategizing efficient bioremediation

Environmental Pollution, Journal Year: 2023, Volume and Issue: 334, P. 122215 - 122215

Published: July 18, 2023

Language: Английский

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Unveiling complete natural reductive dechlorination mechanisms of chlorinated ethenes in groundwater: Insights from functional gene analysis

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 134034 - 134034

Published: March 13, 2024

Language: Английский

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Depth and contaminant-shaped bacterial community structure and assembly at an aged chlorinated aliphatic hydrocarbon-contaminated site

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 452, P. 131220 - 131220

Published: March 20, 2023

Language: Английский

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Enhancing Dichlorobenzene Degradation in Sulfate-Rich Groundwater Using Yeast Extract: Performance and Microbial Responses

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115433 - 115433

Published: Jan. 1, 2025

Language: Английский

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Whole metagenome sequencing and 16S rRNA gene amplicon analyses reveal the complex microbiome responsible for the success of enhanced in-situ reductive dechlorination (ERD) of a tetrachloroethene-contaminated Superfund site

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(2), P. e0306503 - e0306503

Published: Feb. 14, 2025

The North Railroad Avenue Plume (NRAP) Superfund site in New Mexico, USA exemplifies successful chlorinated solvent bioremediation. NRAP was the result of leakage from a dry-cleaning that operated for 37 years. presence tetrachloroethene biodegradation byproducts, organohalide respiring genera (OHRG), and reductive dehalogenase (rdh) genes detected groundwater samples indicated enhanced dechlorination (ERD) remedy choice. This achieved through biostimulation by mixing emulsified vegetable oil into contaminated aquifer. report combines metagenomic techniques with monitoring metadata to reveal new details ERD. DNA extracts collected prior at four, 23 39 months after implementation were subjected whole metagenome sequencing (WMS) 16S rRNA gene amplicon (16S) analyses. response indigenous microbiome ERD protocols is consistent results obtained microcosms, dechlorinating consortia, observations other sites. WMS detects three times as many phyla six 16S. Both abundance changes Dehalococcoides Dehalobacter reflect form availability. Methane not before but appeared afterwards, corresponding an increase methanogenic Archaea. Assembly reads produced scaffolds containing rdh Dehalococcoides, Dehalobacter, Dehalogenimonas, Desulfocarbo, Desulfobacula. Anaerobic aerobic cometabolic degrading microbes include Archaea, methanotrophs, Dechloromonas, Xanthobacter, some which contain hydrolytic genes. Aerobic cometabolism may be supported oxygen gradients existing aquifer microenvironments or produce O2 via microbial dismutation. model established pathway identifies taxa processes support this syntrophic process. project explores potential tools (MGT) next advancement

Language: Английский

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Enhanced dechlorination of tetrachloroethene by anaerobic granular sludge using different electron donors

Water Practice & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

ABSTRACT Tetrachloroethene (PCE) is a common groundwater pollutant, and bioremediation an effective method for removing PCE. This study investigates the biodegradation of PCE by methanogenic granular sludge bioremediation. Batch tests were conducted using six primary substrates – acetate, propionate, butyrate, lactate, methanol, or ethanol as electron donors reductive dechlorination. The results revealed that addition propionate butyrate increased 43% with complete dechlorination to ethene. highest recorded rate was 0.34 μg per g volatile solids day, which achieved 20 mM butyrate. Propionate degraded more slowly than other donors, resulting in lower hydrogen partial pressure. These facilitated gradual release limited quantities favoring over methanogenesis. During lactate added, formed fermentation, ensuring continuous after depletion. Acetate, rapidly consumed primarily generated significant amounts methane, did not support use anaerobic combination recommended PCE-contaminated groundwater.

Language: Английский

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