China
Africa
Explore chapters and articles related to this topic
Microalgae Façade Design
Published in Kyoung Hee Kim, Microalgae Building Enclosures, 2022
Green walls can be a competitor of microalgae enclosures. Green walls offer multiple environmental benefits including biodiversity, urban heat island mitigation, and social and psychosocial well-being. Plants phytoremediate air pollutants through both uptake (absorption) and deposition (adsorption). The role of plants in indoor airborne pollutant removal is well documented in laboratory studies under controlled conditions. However, mixed results on their effectiveness in improving indoor air quality in real-world applications have been shown. In addition, green walls take a longer time for surface coverage and often remain with scattered growth and surface deterioration,6 Microalgae, on the other hand, have a short cultivation period and reach high density in a short time. Plant selection for the green wall is highly climate specific, and it is often hard to predict the behavior of local species,7 whereas microalgae are season independent and exceptionally tolerant to extreme environmental conditions. Green walls consume substantial water and nutrients,8 whereas microalgae consume less freshwater and can use rainwater and nutrients from wastewater/power plants. Table 10.2 summarizes the comparison between microalgae building enclosures and green walls.
Other absorbers and diffusers
Published in Trevor J. Cox, Peter D'Antonio, Acoustic Absorbers and Diffusers, 2016
Trevor J. Cox, Peter D'Antonio
Green walls are vertical gardens where soil in the structure allows vegetation to grow. Figure 2.15 illustrated how applying absorption to the inside of roadside barriers can reduce noise. One possible way of providing this absorption is to use a green wall. A prediction study has indicated that 4–8 dBA of attenuation can be achieved if two parallel roadside barriers are replaced by green walls for flat terrain.45
Creating quality underground places
Published in Elizabeth Reynolds, Underground Urbanism, 2019
The advances in light technology improving the appearance of underground spaces also offer the potential to introduce planting to underground spaces. Although green walls can be costly to install and maintain, they have the potential to improve air quality, as well as amenity. In some instances, groundwater and humidity could be recycled to irrigate green walls or other indoor landscaping.
Suitability of select micro-green, ornamental and legume plants for use in green walls: a novel brewery wastewater treatment option
Published in Environmental Technology, 2023
Scott Wolcott, Dawn Carter, Ted A. Endreny, Lee A. Newman
Greening systems, including green walls, are an architecture feature in and outside of buildings. In addition to aesthetic benefits, green walls are reported to provide temperature regulation, reduced wind speed, increased biodiversity, improved air quality, energy savings, and reduced heat island effect in cities [1]. Green walls can also provide provisioning services when utilized as vegetable gardens, creating an edible green wall that addresses space and access constraints typical of some outdoor gardens [2]. Several researchers have evaluated green walls systems as an option for treating grey water [3–8]. Harandi [9] and Rubi [10] investigated the use of green walls to treat domestic wastewater (WW) following primary settling. However, documentation of green walls being used to treat a WW other than greywater or domestic WW is nearly absent in the literature [11]. The main objective of this study is to evaluate the suitability of three different classes of plants, micro-greens, ornamentals, and legumes for use in green walls that treat raw brewery WW.
Suitability of select media for use in a novel green wall system used to treat brewery wastewater
Published in Environmental Technology, 2022
Scott Wolcott, Mamata Hatwar, Ted A. Endreny, Lee A. Newman
Green, or living, walls have become an increasingly popular architectural installation as sustainable design and living practices have become more common [1]. The benefits of green walls are reported to include energy savings, improved air quality, aesthetic enhancement, building envelop protection, enhanced real estate values, increased biodiversity in urban settings with outdoor walls [2] and enhanced public benefits [3]. Green walls have been researched as a de-centralized treatment technology for household grey wastewater (WW) [4–17]. Harandi [18] and Rubi [19] investigated the use of green walls to treat domestic black water following primary settling. However, the full potential utilization of green walls has not been realized [1] and documentation of green walls being used to treat something other than greywater or domestic black water is nearly absent [20] in the literature. This paper will evaluate select media in green walls used to treat raw WW generated by fermented beverage manufacturers, specifically brewery WW (Figure 1).
Socioeconomic feasibility of green roofs and walls in public buildings: The case study of primary schools in Portugal
Published in The Engineering Economist, 2021
Catarina Almeida, Inês Teotónio, Cristina Matos Silva, Carlos Oliveira Cruz
Typically, green roofs and green walls require more maintenance than traditional roofs and conventional wall systems. Therefore, green roofs and green walls have higher operating costs. Maintenance requirements depend on the vegetation type and other properties of the green cover, such as the substrate type and drainage system applied. Intensive green roofs have stricter maintenance requirements than extensive ones, mainly due to irrigation water needs (Berardi et al., 2014; Perini & Rosasco, 2016; Porsche & Köhler, 2003). Concerning green walls, the maintenance of direct and indirect green façades mainly consists of annual pruning (Perini & Rosasco, 2013). However, living walls usually require more intense and regular maintenance due to the vegetation’s density and diversity (Mir, 2011).