Rhizosphere Bacteria in Plant Growth Promotion, Biocontrol, and Bioremediation of Contaminated Sites: A Comprehensive Review of Effects and Mechanisms

International Journal of Molecular Sciences, Journal Year: 2021, Volume and Issue: 22(19), P. 10529 - 10529

Published: Sept. 29, 2021

Agriculture in the 21st century is facing multiple challenges, such as those related to soil fertility, climatic fluctuations, environmental degradation, urbanization, and increase food demand for increasing world population. In meanwhile, scientific community key challenges crop production from existing land base. this regard, traditional farming has witnessed enhanced per acre yields due irregular injudicious use of agrochemicals, including pesticides synthetic fertilizers, but at a substantial cost. Another major concern modern agriculture that pests are developing pesticide resistance. Therefore, future sustainable requires alternative strategies can enhance an environmentally sound manner. The application rhizobacteria, specifically, plant growth-promoting rhizobacteria (PGPR), chemical gained much attention community. These harbor number mechanisms through which they promote growth, control pests, induce resistance various abiotic stresses. This review presents comprehensive overview involved growth promotion, biocontrol bioremediation contaminated soils. It also focuses on effects PGPR inoculation survival under stress. Furthermore, pros cons rhizobacterial along with directions discussed depth.

Language: Английский

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Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 21(4), P. 2337 - 2398

Published: May 4, 2023

Access to drinkable water is becoming more and challenging due worldwide pollution the cost of treatments. Water wastewater treatment by adsorption on solid materials usually cheap effective in removing contaminants, yet classical adsorbents are not sustainable because they derived from fossil fuels, can induce secondary pollution. Therefore, biological sorbents made modern biomass increasingly studied as promising alternatives. Indeed, such biosorbents utilize waste that would otherwise pollute systems, promote circular economy. Here we review biosorbents, magnetic sorbents, other cost-effective with emphasis preparation methods, types, mechanisms, regeneration spent adsorbents. Biosorbents prepared a wide range materials, including wood, bacteria, algae, herbaceous agricultural waste, animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, arc discharge. Adsorbents be classified into activated carbon, biochar, lignocellulosic clays, zeolites, peat, humic soils. We detail isotherms kinetics. Regeneration supercritical fluid desorption. also discuss exhausted adsorbent management disposal. found agro-waste remove up 68–100% while wooden, herbaceous, bacterial, marine-based 55–99% metals. Animal waste-based 1–99% The average removal efficiency modified around 90–95%, but some treatments, cross-linked beads, may negatively affect their efficiency.

Language: Английский

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Valorization of agro-industrial biowaste to green nanomaterials for wastewater treatment: Approaching green chemistry and circular economy principles

Journal of Environmental Management, Journal Year: 2022, Volume and Issue: 311, P. 114806 - 114806

Published: Feb. 28, 2022

Language: Английский

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Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

Civil Engineering Journal, Journal Year: 2022, Volume and Issue: 8(9), P. 1787 - 1798

Published: Sept. 1, 2022

The present work reports the adsorption behavior involved in of heavy metal ions using a hybrid inulin-tetraethoxysilane (TEOS) adsorbent produced through sol-gel process. An aqueous multi-element solution was used order to examine inulin-TEOS efficiency removing Cd2+, Co2+, and Ni2+ ions. effects contact duration, dosage, initial concentration, pH on targeted batch systems were evaluated. optimal conditions for removal all metals as follows: 30 mg an dosage at 4 5 minutes time with concentration 0.5 mg/L. A one-way analysis variance (one-way ANOVA) replication test showed that parameters had significant differences p-value 0.05. At optimum condition, 92.59%, 90.27%, 86.472% Ni2+, Co2+ removed, respectively. Findings from kinetic studies suggest pseudo-second model can successfully describe overall Additionally, process be adequately explained intra-particle diffusion rate constants following sequence Kint,1 > Kint,2 Kint,3 Cd2+ each step. results fits Langmuir isotherm, while better fit Freundlich one. Finally, reused is able retain good percentage removal, difference decreases 1.99%, 3.29%, 4.12% respectively, after fifth cycle. bio-sorbent has capacity durability, which could offer low-cost practical cleaner production analytes wastewater. Doi: 10.28991/CEJ-2022-08-09-03 Full Text: PDF

Language: Английский

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Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Plants, Journal Year: 2023, Volume and Issue: 12(17), P. 3147 - 3147

Published: Aug. 31, 2023

Soil contamination with cadmium (Cd) is a severe concern for the developing world due to its non-biodegradability and significant potential damage ecosystem associated services. Industries such as mining, manufacturing, building, etc., rapidly produce substantial amount of Cd, posing environmental risks. Cd toxicity in crop plants decreases nutrient water uptake translocation, increases oxidative damage, interferes plant metabolism inhibits morphology physiology. However, various conventional physicochemical approaches are available remove from soil, including chemical reduction, immobilization, stabilization electro-remediation. Nevertheless, these processes costly unfriendly environment because they require much energy, skilled labor hazardous chemicals. In contrasting, contaminated soils can be restored by using bioremediation techniques, which use alone association different beneficial microbes cutting-edge approaches. This review covers new ways. The capability bacteria fungi combination studied analyzed. Microbes, bacteria, algae, reported have high tolerance metals, having 98% capability. internal structure microorganisms, their cell surface characteristics surrounding circumstances all discussed concerning how detoxify metals. Moreover, issues affecting effectiveness explored, along difficulties, solutions prospects.

Language: Английский

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Removal of food dyes using biological materials via adsorption: A review

Food Chemistry, Journal Year: 2024, Volume and Issue: 450, P. 139398 - 139398

Published: April 17, 2024

Language: Английский

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Recent advances on sustainable adsorbents for the remediation of noxious pollutants from water and wastewater: A critical review

Arabian Journal of Chemistry, Journal Year: 2023, Volume and Issue: 16(12), P. 105303 - 105303

Published: Sept. 26, 2023

This review article evaluates and compares the efficiency of various sustainable adsorbents for removal noxious pollutants from water environments. study discusses types concerning their performance suitability. Adsorbent include natural-based, carbon-based, waste-based, biomass-based, biopolymers-based, nanocomposites-based adsorbents, as well metallic organic frameworks, aerogels, networking crystalline solids, zeolite nanoparticles, dendrimers were reviewed. Characterisation, modification, fabrication, adsorption capacities under different conditions, isotherm models, kinetics also Adsorption pH values, adsorbent doses, concentrations, temperature, size particles have been described. One basic needs in wastewater is formulation optimisation, using columnar operations, more importantly, they can be produced quickly should cost-effective. Various studies reported a broad range values thermodynamic parameters pollutants, suggesting adsorbent's nature an essential factor affecting thermodynamics pollutant sorption. The regeneration reusability potential other discussed, along with molecular modelling, simulation, knowledge gaps, future perspectives

Language: Английский

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Microbial biosorbent for remediation of dyes and heavy metals pollution: A green strategy for sustainable environment

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: April 3, 2023

Toxic wastes like heavy metals and dyes are released into the environment as a direct result of industrialization technological progress. The biosorption contaminants utilizes variety biomaterials. Biosorbents can adsorb toxic pollutants on their surface through various mechanisms complexation, precipitation, etc. quantity sorption sites that accessible biosorbent affects its effectiveness. Biosorption’s low cost, high efficiency, lack nutrient requirements, ability to regenerate main advantages over other treatment methods. Optimization environmental conditions temperature, pH, availability, factors is prerequisite achieving optimal performance. Recent strategies include nanomaterials, genetic engineering, biofilm-based remediation for types pollutants. removal hazardous from wastewater using biosorbents strategy both efficient sustainable. This review provides perspective existing literature brings it up-to-date by including latest research findings in field.

Language: Английский

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Advanced oxidation and biological integrated processes for pharmaceutical wastewater treatment: A review

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 353, P. 120170 - 120170

Published: Feb. 1, 2024

The stress of pharmaceutical and personal care products (PPCPs) discharging to water bodies the environment due increased industrialization has reduced availability clean water. This poses a potential health hazard animals human life because contamination is great issue climate, plants, humans, aquatic habitats. Pharmaceutical compounds are quantified in concentrations ranging from ng/Lto μg/L environments worldwide. According (Alsubih et al., 2022), carbamazepine, sulfamethoxazole, Lutvastatin, ciprofloxacin, lorazepam were 616–906 ng/L, 16,532–21635 694–2068 734–1178 2742–3775 ng/L respectively. Protecting preserving our must be well-driven by all sectors sustain development. Various methods have been utilized eliminate emerging pollutants, such as adsorption biological advanced oxidation processes. These their benefits drawbacks removal pharmaceuticals. Successful wastewater treatment can save bodies; integrating green initiatives into main purposes actor firms, combined with continually periodic awareness current implications environmental/water pollution, will play major role conservation. article reviews key publications on adsorption, biological, processes used remove environment. It also sheds light capability methods, efficacy concentration removal. A research gap identified for researchers explore order problem associated wastes. Therefore, future study should focus combining an excellent way products, even at low concentrations. Biological ideal circumstances microbial that enable simultaneous effects diverse efficiency.

Language: Английский

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Advancements in Adsorption Techniques for Sustainable Water Purification: A Focus on Lead Removal

Separations, Journal Year: 2023, Volume and Issue: 10(11), P. 565 - 565

Published: Nov. 10, 2023

The long-term sustainability of the global water supply, with a paramount emphasis on cleanliness and safety, stands as formidable challenge in our modern era. In response to this pressing issue, adsorption techniques have emerged pivotal widely recognized solutions for removal hazardous pollutants, particular lead from wastewater. This comprehensive review explores relentless advancements made domain, highlighting innovations using separation purification that surpass traditional metal oxide-based adsorbents. Of note is growing exploration alternative materials, such starch, chitosan, nanoscale structures like zeolites metal-organic frameworks, magnetic carbon-based substances development inorganic These their remarkable capacity structural adjustment, possess extraordinary capabilities effective contaminant removal, facilitating swift purification. literature survey was conducted Google Scholar engine, “adsorbents remediation” starting keywords, resulting approximately 6000 papers. search refined focus last three years specifically targeted papers which are most relevant remediation. More than 100 were analysed investigate various techniques, surface modifications, adsorbent materials managing pollutants water. also illuminates research limitations, specific starch-based adsorbents As we progress towards practical commercial applications, identifies challenges associated provides invaluable insights into future prospects. Surface modification emerges promising path, potential substantially enhance capacity, potentially doubling or even quadrupling it. Moreover, demonstrate impressive regenerative capabilities, maintaining up 90% regeneration efficiency after multiple cycles. conclusion, show considerable agents aquatic environments. Nevertheless, need further persists, emphasizing optimization process exploring stability real-world scenarios.

Language: Английский

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