Dragging Characteristics of Common Water Hyacinths(Eichhornia Crassipes)

2021 ◽  
Vol 55 (3) ◽  
pp. 121-127
Author(s):  
Dae-Bin Song ◽  
◽  
Ki-Hyeon Lim
Keyword(s):  
Eichhornia Crassipes ◽  
Water Hyacinths

Nutrient removal by water lettuce (Pisitia stratiotes)

1996 ◽  
Vol 34 (7-8) ◽  
pp. 407-412 ◽  
Author(s):  
T. Aoi ◽  
T. Hayashi
Keyword(s):  
Growth Rate ◽  
Batch Culture ◽  
Culture System ◽  
Eichhornia Crassipes ◽  
Aquatic Macrophyte ◽  
Water Bodies ◽  
Water Lettuce ◽  
Wet Weight ◽  
Water Hyacinths ◽  
Nitrogen Phosphorus

The nutrient uptake and growth rates of the water lettuce [Pisitia stratiotes] were investigated in a batch culture system and a continuous flow system. As the water hyacinth [Eichhornia crassipes] is well known and widely researched as an aquatic macrophyte, water hyacinths were used as a control in a batch culture system. It was found that the specific growth rate of water lettuce was slightly higher in dry season, and in rainy season the growth rate of water hyacinths decreased almost 70%, but the rate of water lettuce decreased only 45%. From this result, water lettuce is thought to be grow up enough even under low solar radiation. The nitrogen, phosphorus and ash contents of biomass were about 1.5 times higher in water hyacinths than in water lettuce (N:2.15% & 1.65%, P:1.67% & 1.03%, ash 19.6% & 19.9% respectively). As the biomass of water lettuce is not so big and heavy (wet weight of water lettuce was under 100g and the width and height of the plant was under 20cm), removal of surplus biomass from water bodies is easy. It was made clear that water lettuce is very effective for removing nutrient from water bodies.

scholarly journals Water Hyacinths (Eichhornia crassipes) – Application for Secondary Wastewater Treatment and Biomass Production

2021 ◽  
pp. 52-61
Author(s):  
K. Dölle ◽  
Q. Wang ◽  
J. Tong
Keyword(s):  
Total Phosphorus ◽  
Nitrogen Removal ◽  
Retention Time ◽  
Eichhornia Crassipes ◽  
Retention Rate ◽  
Weather Conditions ◽  
Ammonia Nitrogen ◽  
Retention Rates ◽  
Water Hyacinths ◽  
Laboratory Water

Clean water is one of the most significant challenges for our society. Efficient reuse of effluent water after treatment can becomes an effective solution to the shortage of water resources. The focus of this study is to investigate the use of Eichhornia crassipes plants for post treatment of clarified municipal residential sewage under natural conditions using a small pilot Laboratory Water Hyacinth Clarifier system. Twelve Eichhornia crassipes plants are used to investigate total phosphorus and ammonia nitrogen removal during a 20-day study period under various retention rates. The biomass gain of the Eichhornia crassipes plants was 2.4-fold from the initial weight of 1556.5 g to 3676.7 g. Total phosphorous reduction of 10.64%, 11.83%, 20.93%, 41.66%, 67.12%, and 40.13% for the 1.5, 9.0, 12.0, 24.0, 48.0 h, and 120.0-hour retention times respectively. Ammonia nitrogen removal was between 35.71%, 33.33% for the 1.50 and 9.0-hour retention time and 42.85% for the 12.0 and 24.0-hour retention time. A reduction of 71.43% resulted for the 48.0-hour retention time and an 85.71% reduction for the 120.0-hour retention time. Overall retention time of 24.0 h, 48.0 h and 120 h tend to give best removal rates for both total phosphorus and ammonia nitrogen removal. Factors such as climate, contaminant concentration, retention rate, and weather conditions play an important role for the application of Eichhornia crassipes in a tertiary treatment sequence of MRS.

scholarly journals Eichhornia crassipes (Mart.) Solms: Uses, Challenges, Threats, and Prospects

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Opeyemi I. Ayanda ◽  
Tolulope Ajayi ◽  
Femi P. Asuwaju
Keyword(s):  
Eichhornia Crassipes ◽  
Control Method ◽  
Biofuel Production ◽  
Economic Downturn ◽  
Control Methods ◽  
Pests And Diseases ◽  
Water Transportation ◽  
Breeding Grounds ◽  
Pros And Cons ◽  
Water Hyacinths

Water hyacinths pose serious challenges to humanity and the environment. Considering the enormity of the menace associated with the growth and spread of the plant and the difficulty in achieving a single, generally acceptable control method, it is becoming increasingly imperative to explore the potentials of the plant. New water hyacinth-related articles are regularly being published. Recently published articles about the plant were accessed, and the information in these articles is presented in the context of the pros and cons of the plant. Some of the benefits that can be derived from the plant include biogas and biofuel production, medicinal functions, vermicomposting, compost production, and bioremediation. However, clogging of waterways, obstruction of water transportation, and fishing activities; breeding grounds for pests and diseases; and reduction of water quality, loss of biodiversity, and economic downturn in areas invaded by the plant are problems associated with it. The peculiarity in the invasiveness of each situation should determine whether or not the growth of the plant is a problem, especially if the opportunity to harness the potentials of the plant exists. There are three major methods for controlling the plants when control becomes inevitable: mechanical, chemical, and biological. To achieve the best control, integrating two or more control methods is advised.

Cyanide phytoremediation by water hyacinths (Eichhornia crassipes)

Chemosphere ◽  
2007 ◽  
Vol 66 (5) ◽  
pp. 816-823 ◽  
Author(s):  
Mathias Ebel ◽  
Michael W.H. Evangelou ◽  
Andreas Schaeffer
Keyword(s):  
Eichhornia Crassipes ◽  
Water Hyacinths

scholarly journals Living with floating vegetation invasions

AMBIO ◽  
2020 ◽  
Vol 50 (1) ◽  
pp. 125-137 ◽  
Author(s):  
Fritz Kleinschroth ◽  
R. Scott Winton ◽  
Elisa Calamita ◽  
Fabian Niggemann ◽  
Martina Botter ◽  
...  
Keyword(s):  
Eichhornia Crassipes ◽  
Environmental Benefits ◽  
Societal Costs ◽  
Nutrient Sources ◽  
Urban Land Cover ◽  
Plant Coverage ◽  
Floating Vegetation ◽  
Negative Impacts ◽  
Water Hyacinths ◽  
Floating Plant

AbstractInvasions of water bodies by floating vegetation, including water hyacinth (Eichhornia crassipes), are a huge global problem for fisheries, hydropower generation, and transportation. We analyzed floating plant coverage on 20 reservoirs across the world’s tropics and subtropics, using > 30 year time-series of LANDSAT remote-sensing imagery. Despite decades of costly weed control, floating invasion severity is increasing. Floating plant coverage correlates with expanding urban land cover in catchments, implicating urban nutrient sources as plausible drivers. Floating vegetation invasions have undeniable societal costs, but also provide benefits. Water hyacinths efficiently absorb nutrients from eutrophic waters, mitigating nutrient pollution problems. When washed up on shores, plants may become compost, increasing soil fertility. The biomass is increasingly used as a renewable biofuel. We propose a more nuanced perspective on these invasions moving away from futile eradication attempts towards an ecosystem management strategy that minimizes negative impacts while integrating potential social and environmental benefits.

Mercury heavy-metal-induced physiochemical changes and genotoxic alterations in water hyacinths [Eichhornia crassipes (Mart.)]

2014 ◽  
Vol 22 (6) ◽  
pp. 4597-4608 ◽  
Author(s):  
Srinivasan Malar ◽  
Shivendra Vikram Sahi ◽  
Paulo J. C. Favas ◽  
Perumal Venkatachalam
Keyword(s):  
Heavy Metal ◽  
Eichhornia Crassipes ◽  
Water Hyacinths

scholarly journals Biocomposites from anaerobically digested Eichhornia crassipes ((Mart.) Solms), as an alternative solution for the post-phytoremediation process

2021 ◽  
Vol 2 (2) ◽  
pp. 139-144
Author(s):  
Gabriella Marsaulina ◽  
◽  
Taufik Taufikurahman ◽  
Andira Rahmawati
Keyword(s):  
Anaerobic Digestion ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Chromium Content ◽  
Liquid Waste ◽  
Absorption Capacity ◽  
Cow Dung ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Water Hyacinths

Water hyacinth (Eichhornia crassipes) is a plant species commonly used for phytoremediation to reduce high chromium content in tannery liquid waste in Garut, West Java. Water hyacinth materials harvested from the phytoremediation can be used for the anaerobic digestion process to produce biogas and bio-slurry. This study aimed to determine the reduction of chromium content found in water hyacinths due to the anaerobic digestion process, and utilization of bio-slurry from the anaerobic digestion process as a biocomposite material. The anaerobic digestion process was carried out for 33 d using biodigesters and the composition of the biodigesters were varied into 100% dried water hyacinths and 80% water hyacinths with the addition of 20% cow dung. The bio-slurry from the anaerobic digestion process was then used for making biocomposites with 3 different compositions, i.e., 75 and 25%; 50 and 50%; and 25 and 75% of cement and bio-slurry, respectively. The average chromium content found in water hyacinths from the phytoremediation process without anaerobic digestion process was 41.964 mg/l. The results show a reduction in the amount of chromium after the anaerobic digestion process was found in each composition of bio-slurry, which were 15.979 mg/l (100% water hyacinth) and 14.861 mg/l (80% water hyacinth + 20% cow dung). Biodigester with a composition of 80% water hyacinth + 20% cow dung produced the highest average volume of biogas which was 0.424 l. The biocomposite of 75% cement and 25% bio-slurry had the highest compressive strength value of 30.598 MPa and water absorption capacity of 37.25%. It can be concluded that biocomposite with the composition of 75% cement and 25% water hyacinth bio-slurry is promising to be used as an alternative material for buildings.

scholarly journals Phytoremediation of iron in ex-sand mining waters by water hyacinth (Eichhornia crassipes)

2021 ◽  
Vol 22 (2) ◽  
Author(s):  
Qadar Hasani ◽  
NIKEN T.M. PRATIWI ◽  
YUSLI WARDIATNO ◽  
HEFNI EFFENDI ◽  
ARTHO NUGRAHA MARTIN ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Hyacinth ◽  
Water Surface ◽  
Eichhornia Crassipes ◽  
Surface Coverage ◽  
Translocation Factor ◽  
Mining Area ◽  
Sand Mining ◽  
High Concentration ◽  
Water Hyacinths

Hasani Q, Pratiwi NTM, Wardiatno Y, Effendi H, Martin AN, Efendi E, Pirdaus P. 2020. Phytoremediation of Iron (Fe) in Ex-sand Mining Waters by Water Hyacinth (Eichhornia crassipes (Mart.) Solms). The high concentration of iron (Fe) has allegedly caused the water quality of puddles at sand mining area. The poor water quality, in which high contentrations of iron will to a reduction in aquaculture production. This study verified the ability of water hyacinths (Eichhornia crassipes (Mart.) Solms.)) as a phytoremediation agent for iron (Fe) concentration in water at the sand mining area, in East Lampung Regency, Indonesia. The study was carried out with 3 treatments and 3 replication each, including the treatment of (i) 25% water surface coverage, (ii) 50% water surface coverage, and (iii) 75% water surface coverage of water hyacinth. Measurement of Fe concentrations, bioconcentration factor (BCF) and translocation factor (TF) once a week, until Fe concentrations in water are adequate for aquaculture. This was achieved for 21 days. The results showed that the highest percentage reduction of Fe (97.49%) was observed at water hyacinth cover area 50%. The highest value of BCF was 2385.51, while the highest TF was 1.14 in stems and 1.02 in leaves. The results of this study open up opportunities for use water in ex-sand mining areas for aquaculture by the community and its management by the Government of East Lampung Regency, Lampung, Indonesia.

The development from kinetic coefficients of a predictive model for the growth of Eichhornia crassipes in the field. IV. Application of the model to the Vernon Hooper Dam — a eutrophied South African impoundment

Bothalia ◽  
1984 ◽  
Vol 15 (3/4) ◽  
pp. 733-748 ◽  
Author(s):  
C. F. Musil ◽  
C. M. Breen
Keyword(s):  
Population Size ◽  
South African ◽  
Growth Rates ◽  
Eichhornia Crassipes ◽  
Nutrient Loading ◽  
Nutrient Inputs ◽  
Kinetic Coefficients ◽  
Limiting Nutrient ◽  
Population Sizes ◽  
Water Hyacinths

A model developed for  Eichhornia crassipes (Mart .) Solms was used to identify the limiting nutrient in the Vernon Hooper Dam and to predict population sizes, yields, growth rates and frequencies and amounts of harvest under varying conditions of nutrient loading and climate. Predicted data were used to evaluate the effectiveness of harvesting measures currently being employed for controlling both nutrient inputs and the population size in this impoundment. Predictions o f the population size, before harvesting was initiated, generally compared favourably with th a t estimated visually. Predictions of the quantities of P that could be removed daily by a 20 ha population indicate that such a population in the impoundment could reduce P concentrations in the epilimnion during summer stratification to levels limiting for algae. This may explain the observed reduction in algal concentrations since the introduction of harvesting. Estimates of the amounts and frequencies of harvest required to contain the predicted potential yields of a 20 ha population indicate that 100 metric tonnes of fresh water hyacinths harvested daily from the impoundment, under present conditions of reduced nutrient loading, are adequate during winter, but not during summer.

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