scholarly journals High-Grade Chemicals and Biofuels Produced from Marginal Lands Using an Integrated Approach of Alcoholic Fermentation and Pyrolysis of Sweet Sorghum Biomass Residues

2021 ◽  
Vol 14 (1) ◽  
pp. 402
Author(s):  
Florin Nenciu ◽  
Maria Paraschiv ◽  
Radu Kuncser ◽  
Constantin Stan ◽  
Diana Cocarta ◽  
...  
Keyword(s):  
Plant Development ◽  
Contaminated Soils ◽  
Sweet Sorghum ◽  
Agricultural Land ◽  
Integrated Approach ◽  
Marginal Land ◽  
High Quality ◽  
Development Environment ◽  
Marginal Lands ◽  
Feedstock Production

New global directions align agricultural land resources towards food production; therefore, marginal lands could provide opportunities for second-generation energy crops, assuming that in the difficult conditions of plant development, productivity can be maintained at relatively high levels. Sustainable bioenergy production on marginal lands represents an ambitious objective, offering high-quality biofuels without competing with the agri-food industry, since it allows successful feedstock production to be performed on unmanaged areas. However, marginal land feedstock production generally shows several agronomic, techno-economic, and methodological challenges, leading to decreases in the obtained quantities of biomass and profitability. Sweet Sorghum is a technical plant that has the needed qualities to produce large amounts of biofuels on marginal lands. It is a high biomass- and sugar-yielding crop, characterized by a high photosynthetic efficiency and low fertilizer requirement, is resistant to drought, and adapts well to different climate areas. Marginal lands and contaminated soils provide a favorable development environment for plants such as sweet sorghum; however, in-depth research studies on biomass productivity must be carried out, as well as advanced quality evaluation of the products, in order to develop combined technologies that use resources efficiently. The present study starts with a comparative evaluation of two sweet sorghum crops established on both marginal and regular lands, assessing plant development characteristics and juice production, and an evaluation of bioethanol generation potential. The vegetal wastes resulting from the processing were treated by pyrolysis, with the aim of maximizing the productivity of high-quality liquid biofuels and chemicals. The charcoal obtained in the thermal processes was considered as an amendment of the soil so that marginal land quality could be improved over time.

scholarly journals Lablab purpureus (L.) Sweet soil-plant system towards the recovery of marginal lands

2021 ◽  
Author(s):  
Patrícia Vidigal ◽  
Marino Pedro Reyes-Martín ◽  
Maria Manuela Abreu
Keyword(s):  
Circular Economy ◽  
Contaminated Soils ◽  
Agricultural Land ◽  
Market Potential ◽  
Policy Framework ◽  
Lablab Purpureus ◽  
Marginal Lands ◽  
Mining Areas ◽  
Physico Chemical ◽  
Hyacinth Bean

<p>Land represents 29% of the earth surface, and 71% of which  is habitable, but only 50% is suitable for agricultural, which makes agricultural land a valuable  and finite natural resource that has been experiencing increasing pressure to respond to food, feed, industrial and population housing needs. Thus, it is necessary to change the way in which we eat and live. Mismanagement of agricultural inputs together with the improvement of human living standards and urbanization has stimulated the demand and market potential of mining and quarrying market, which has promoted the occurrence of contaminated soils with potentially hazardous elements (PTE). The recovery of marginal lands, such as salt and drought prone lands, or even abandoned mining areas could be a potential strategy to decrease the pressure over the remaining agricultural land, whilst promoting ecosystem biodiversity. The recovery of mining areas, although still controversial, it is not totally dismissible because one has to increase the knowledge of plant species that could aid in the recovery of soil contaminated PTE whilst offering alternative industrial agricultural outputs. There has been increasing efforts to create sustainable ecotechnologies to rehabilitate mining areas and create conditions for agriculture activities while protecting the food-chain. Phytostabilization is an ecotechnology towards rehabilitation, based on pedo-engineering in which Technosols are built from organic/inorganic and mine wastes (e.g. <em>gossan</em>), thus promoting circular economy. The effectiveness of Technosols in improving the physico-chemical characteristics of mining wastes and in the decrease of their leachates has been widely proven, especially when soil-plant systems are taken into account. Our experiment with Technosols and a multifunctional legume hyacinth bean (<em>Lablab purpureus</em> (L.) Sweet) showed just that. Hyacinth bean is one of the 101 orphan crops that recently have been recognized as crops for the future, due to the prospective they hold as food, feed, nutritional content and multiple agricultural outputs. Our Technosols built with organic and inorganic wastes collected from nearby industries, together with <em>gossan </em>material, improved the physico-chemical and biological properties of the <em>gossan</em>, as well as they decreased the bioavailability of PTE (As, Pb, Zn, Cu) in the soil available fraction, making it possible for hyacinth bean to develop. Our Technosols showed increased content in NPK and C<sub>org</sub>, which was concurrent with a significant increase of soil enzymes activity, proving soil quality enhancement aiding hyacinth bean development. Moreover, hyacinth bean grown in Technosols showed an impressive shoot and root development in comparison with hyacinth bean grown in <em>gossan</em>. The PTE translocation (root to shoot) and accumulation (soil to shoot) coefficients values of this legume grown in Technosols indicated low PTE concentrations in the shoot, which are compatible with the potential of hyacinth bean for the rehabilitation of contaminated soils, whilst offering alternative revenues (e.g. feed). Hence, these results show the value that this orphan crop has when allied with a promising ecotechnology that contributes to promote circular economy, towards the new European Green Deal policy framework.</p>

scholarly journals RECYCLING BIOSOLIDS TO IMPROVE MARGINAL LANDS FOR BIOENERGY FEEDSTOCK PRODUCTION IN UKRAINE

2021 ◽  
pp. 79-86
Author(s):  
N. O. Didenko ◽  
Y. B. Mosiichuk ◽  
M. D. Zosymchuk ◽  
M. M. Kharytonov ◽  
M. G. Babenko ◽  
...  
Keyword(s):  
Soil Quality ◽  
Sweet Sorghum ◽  
Quality Data ◽  
Bioenergy Feedstock ◽  
Marginal Lands ◽  
Energy Independence ◽  
Feedstock Production ◽  
Economic Analyses ◽  
Bioenergy Feedstock Production ◽  
The Impact

Energy independence is one of the national priorities facing Ukraine today. Plant-based feedstocks have the potential to diversify Ukraine’s energy independence by decreasing dependence on petroleum-based energy, reducing greenhouse gas emissions, expanding renewable fuel industries and creating job opportunities. However, biofeedstock needs to be competitive on availability, performance, and price to produce, market, and produce fuels. We hypothesize that domestically produced feedstocks from sweet sorghum, using proactive recycling of nutrient-rich biosolids on vast areas of degraded and marginal lands, could be a win-win energy independence strategy in Ukraine. Our goal is to create for generating a steady-state source of biofeedstock and disseminate science-based knowledge and training to the clientele. Specific objectives are to: (1) establish research studies to evaluate growth and feedstock productivity, nutrient removal, and feedstock characteristics of sweet sorghum fertilized with biosolids on degraded and marginal lands in Rivne, Kherson, Dnipro, and Kyiv regions of Ukraine; and (2) determine the impact of biosolids and sweet sorghum on soil quality. Data collected on growth, feedstock production, feedstock characteristics, fuel potential, and high-value co-products (biochar) of sweet sorghum and soil quality will be evaluated by multivariate statistics. Input, output, and outreach data will be subject to techno-economic analyses to evaluate the economically viability, environmentally compatibility, and social acceptability of the project. Traditional and electronic outlet activities will be utilized to disseminate outcomes and outputs and to evaluate project impacts.

Lessons learned with an integrated approach for capacity development in agricultural land drainage

2008 ◽  
Vol 57 (3) ◽  
pp. 354-365 ◽  
Author(s):  
Henk Ritzema ◽  
Wouter Wolters ◽  
Catharien Terwisscha Van Scheltinga
Keyword(s):  
Agricultural Land ◽  
Capacity Development ◽  
Integrated Approach ◽  
Lessons Learned ◽  
Land Drainage

scholarly journals Introduction of Mycorrhizae Propagules and Rhizobium as Growth Promoter Legumes on Marginal Lands.

2015 ◽  
Vol 2 (1) ◽  
pp. 673
Author(s):  
Tutik Nurhidayati ◽  
Dini Ermavitalini ◽  
Endang Purwanti Setyaningsih ◽  
Agus Satriyono
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Dry Weight ◽  
Marginal Land ◽  
Growth Promoter ◽  
Marginal Lands ◽  
Arachis Hypogea ◽  
Legume Plants

<p>The objectives of this study is to evaluate the effect of mycorrhizae propagules and rhizobium on the growth on legume plants (Arachis hypogea) in marginal land. The experiment was conducted in Nguter village Lumajang, East Java. The results showed that mycorrhizae propagules stimulated rhizobium and plant growth by increasing plant height, dry weight and nodule weight. This results implied that mycorrhizae propagules stimulated and rhizobium were advantageous promoting growth at marginal lands.</p><p><br /><strong>Keywords</strong>: Mycorhiza propagul, Rhizobium, legume and Marginal land</p>

scholarly journals Productive soils as basis for effective agricultural land use in Carpathian region of Ukraine

2013 ◽  
pp. 257-264 ◽  
Author(s):  
Zinovii Pankiv
Keyword(s):  
Land Use ◽  
Key Words ◽  
Economic Performance ◽  
Agricultural Land ◽  
Arable Land ◽  
Integrated Approach ◽  
Agricultural Land Use ◽  
Land Resources ◽  
Carpathian Region ◽  
Definition Of

The structure of soils in Carpathian region of Ukraine, which is involved for agricultural land use, including for arable land, has been analyzed. The basic steps to increase the area of arable land have been described. Integrated approach with using spatial, legal, environmental, and economic performance has been proposed for definition of the efficiency of agricultural land use. The appellation “soil use” for characteristic the type using of agricultural land resources has been proposed. Key words: productive soils, land use, the Carpathian region of Ukraine, soil use

scholarly journals Management of Gogo Rice Production in Realizing the Commercialization of Marginal Land Farming Households in Yogyakarta

2021 ◽  
Vol 16 (2) ◽  
pp. 373-378
Author(s):  
Wulandari Dwi Etika Rini ◽  
Endang Siti Rahayu ◽  
Mohamad Harisudin ◽  
Supriyadi Supriyadi
Keyword(s):  
Carrying Capacity ◽  
Food Production ◽  
Sampling Method ◽  
Agricultural Land ◽  
Upland Rice ◽  
Household Consumption ◽  
Rice Production ◽  
Marginal Land ◽  
Marketable Surplus ◽  
Farming Households

The land is an important factor for people whose lives depend on the agricultural sector. The need for land for various uses has resulted in decreasing agricultural land which could have implications for decreasing food production. Alternative options which are expected to increase the potential for food production are the utilization of marginal land. Farmers with marginal land need to manage their production to meet household needs. So it is important to examine the marketable surplus, the level of commercialization, and the carrying capacity of marginal land. The research area was taken by purposive sampling method in Gunungkidul Yogyakarta. The samples taken were upland rice farmer households with the simple random sampling method. The marketable surplus analysis uses a marketable surplus formula, then the percentage is used to determine the level of farm commercialization. The carrying capacity analysis is carried out using the carrying capacity formula. The results showed that farmer households manage rice production by allocating an average of 59.1% for marketed and 40.9% for household consumption. The allocation of marketable surplus is greater than for household consumption, this shows that gogo rice farming households are towards commercially. The marginal land carrying capacity of 0.641 indicates that the land cannot be developed in an expansive and exploratory manner. The implication is in increasing upland rice production on marginal land, namely by an intensification of farming.

Soil Material Quality and Environmental Potential of Metallically Contaminated Soils

2020 ◽  
Vol 838 ◽  
pp. 164-169
Author(s):  
Juraj Fazekaš ◽  
Danica Fazekašova ◽  
Jana Chovancová
Keyword(s):  
Contaminated Soils ◽  
Agricultural Land ◽  
Mining Activity ◽  
Limit Values ◽  
Soil Material ◽  
Risk Elements ◽  
Average Value ◽  
Potential Index ◽  
Environmental Functions

The paper presents the results of the evaluation of the environmental potential of soils in the area affected by the long-term mining activity. The environmental potential index consists of a numerical expression of the ability to provide water storage, immobilization of risk elements, and immobilization and transformation of organic pollutants. The exceedance of the limit values Hg, Cu, Zn, As, Cd and Pb was found in the soils of the investigated area of central Spiš. The rate of soil immobilization of risk elements is very low to high. The point value expressing the ability of agricultural lands to provide environmental functions is very low to medium in the studied areas, the financial expression of the values of the environmental potentials indexes is in the range of 7 100 to 14 000 € ha-1, while the average value of 1 ha of agricultural land in Slovakia is about 14 200 €.

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