Research Article
Biological Wastewater Treatment Using Higher Aquatic Plants
Sodik Oltievich Khuzhzhiev*
,
Inom Zakirovich Bakhramov,
Dildora Gafurova,
Madina Dadajonovna Khamraeva
Issue:
Volume 9, Issue 4, December 2024
Pages:
94-99
Received:
28 June 2024
Accepted:
4 October 2024
Published:
13 November 2024
Abstract: This article presents the results of research on the biological treatment of various industrial and domestic wastewater using higher aquatic plants. The experiments examined the possibility of biological treatment of mining wastewater on a semi-industrial scale using Eichhornia crassipes Solms, Pistia stratiotes L. Azolla caroliniana and Lemna minor and their features in biological treatment are identified. Eichhornia and pistia plants are important because they show high efficiency in wastewater treatment due to their high adsorption properties, with frequent renewal of biomass in ponds, the phytoremediation capacity of higher aquatic plants is 51% per day due to the adsorption properties of plants, based on calculations, it is possible to propose cleaning pools with a volume of 1000 cubic meters of water for 5 days, through the renewal of plant culture every 1-3 days. The use of purification methods in this way recommends the construction of additional structures. In this case, depending on the volume of wastewater from the plant, it is necessary to build additional bioponds, create a water transfer system, and also build additional bioponds for the purpose of growing biomass or increasing plants. Only then can the biological purification method we recommend be used on an industrial scale or at an industrial enterprise to purify wastewater in an environmentally safe and cost-effective manner.
Abstract: This article presents the results of research on the biological treatment of various industrial and domestic wastewater using higher aquatic plants. The experiments examined the possibility of biological treatment of mining wastewater on a semi-industrial scale using Eichhornia crassipes Solms, Pistia stratiotes L. Azolla caroliniana and Lemna mino...
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Review Article
Biochar's Role in Enhancing Soil Fertility and Current Trends of Utilization for Sustainable Coffee (Coffea arabica L.) Production: A Review
Leta Ajema Gebisa*,
Meseret Degefa Regasa
Issue:
Volume 9, Issue 4, December 2024
Pages:
100-108
Received:
18 November 2024
Accepted:
3 December 2024
Published:
25 December 2024
DOI:
10.11648/j.jeece.20240904.12
Downloads:
Views:
Abstract: Biochar, a carbonaceous material prepared from diverse organic waste, has gained substantial attention due to its excellent attributes, like carbon content, CEC, abundant specific surface area, structural characteristics, plant nutrient contribution, water and plant nutrient retention etc. Incorporating biochar to the soil system introduces supplementary organic matter, thereby augmenting the comprehensive nutrient composition and microbial dynamics within the soil ecosystem for a long time that completely fit for perennial crops cultivated in acid prone areas like coffee production. Biochar producing organic materials are easily accessible in coffee production areas from coffee husks that pollute the river streams and generally create environmental pollution. However, as biochar advantages are too aged technology to solve general soil fertility problems, there is no comprehensive research recommendation generated for biochar application in coffee producing area specially in organic coffee producing countries like Ethiopia. Therefore, this systematic review attempts to gather more available empirical research on google scholars by using clearly defined, systematic terms to obtain answers for a specific question like ‘how to use biochar for coffee production and coffee nursery media preparations. More than 70 papers written by different authors and project papers were searched from google scholars and research gets. Through this investigation, we obtained critical information that may suggest the sustainable effects of biochar on enhancing soil fertility and improving both the production and productivity of coffee, while simultaneously preserving the ecological integrity of the soil system. Applying biochar for soil fertility enhancement is a critical technic that boosts the soil physical, chemical, and biological contents while mitigating the greenhouse gas like methane emission and sequestering the carbon stalk within the soil systems.
Abstract: Biochar, a carbonaceous material prepared from diverse organic waste, has gained substantial attention due to its excellent attributes, like carbon content, CEC, abundant specific surface area, structural characteristics, plant nutrient contribution, water and plant nutrient retention etc. Incorporating biochar to the soil system introduces supplem...
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