Type of substrates

Source

Natural material

Sand

Saeed and Sun [20]

Gravel

Calheiros, Rangel and Castro [21]

Clay

Calheiros, Rangel and Castro [21]

Calcite

Ann, Reddy and Delfino [22]

Marble

Arias, Del Bubba and Brix [23]

Vermiculite

Arias, Del Bubba and Brix [23]

Bentonite

Xu, Xu, Wu and Muhammad [24]

Dolomite

Ann, Reddy and Delfino [22]

Limestone

Tao and Wang [25]

Shell

Seo, Cho, Lee and Heo [26]

Shale

Saeed and Sun [20]

Peat

Saeed and Sun [20]

Wollastonite

Brooks, Rozenwald, Geohring, Lion and Steenhuis [27]

Maerl

Saeed and Sun [20]

Zeolite

Bruch, Fritsche, Bänninger, Alewella, Sendelov, Hürlimann, Hasselbach and Alewell [28]

Industrial by-product

Slag

Cui, Ouyang, Lou, Yang, Chen, Zhu and Luo [29]

Fly ash

Xu, Xu, Wu and Muhammad [24]

Coal cinder

Ren, Zhang, Liu and Wang [30]

Alum sludge

Babatunde, Zhao and Zhao [31]

Hollow brick crumbs

Ren, Zhang, Liu and Wang [30]

Moleanos limestone

Mateus, Vaz and Pinho [32]

Wollastonite tailings

Hill, Payne, Rogers and Kown [33]

Oil palm shell

Chong, Chia and Ahmad [34]

Artificial products

Activated carbon

Ren, Zhang, Liu and Wang [30]

Light weight aggregates

Saeed and Sun [20]

Compost

Saeed and Sun [20]